Mohammad Abdul Mannan - Academia.edu (original) (raw)
Papers by Mohammad Abdul Mannan
AIUB Journal of Science and Engineering (AJSE)
An essential instrument for the operation of a power system is to monitor and analyze the data to... more An essential instrument for the operation of a power system is to monitor and analyze the data to find the fault and rectify it before the system collapses completely. This paper intents to utilize the idea to create a control system that will fulfill objectives like monitoring vital parameters controlling the power distribution, outage management by fault detection based on the variation of Voltage, Frequency, and Current & protection of the Circuit against any significant incidents by isolating the load from utility and flagging the information through feedback to the utility authority. The Project implements the high-end technology for IoT applications that will connect with the Microcontroller to receive the data at regular intervals and post the timestamped data in a cloud platform for remote monitoring and archiving. This innovation can reduce human dependency and overcome the whole outage situation by building a two-way communication that means electricity and information are...
Trends in Electrical Engineering, Aug 13, 2019
The DC motors are most suitable for wide range speed control and hence it is used in many adjusta... more The DC motors are most suitable for wide range speed control and hence it is used in many adjustable speed drives. The DC motors are generally fed by chopper circuit for improved performance. In order to get smooth and precise control over the speed of DC motor, many different types of controllers have already been introduced. In this paper, two discrete-time multi-input and multi-output optimal controllers, one for control of speed of DC motor and another for control of DC voltage of chopper, are designed. The state space models of DC motor and chopper circuit are developed to design the proposed controllers. Based on the developed state space model the proposed controllers are designed. The performances of controllers are verified using the MATLAB/SIMULINK contrivance. The simulation results show that, the proposed controller gives admirable control over the speed and the dc voltage respectively. Again the overall design exhibits ease, less complexity and robustness than any other conventional controllers. Keywords: Separately Excited DC Motor, Two Quadrant Chopper, Speed Control, Optimal Regulator
2019 International Conference on Robotics,Electrical and Signal Processing Techniques (ICREST), 2019
Advancement in technology has made regular life more easy and convenient. In every aspect of life... more Advancement in technology has made regular life more easy and convenient. In every aspect of life, it is essential to be updated that ensures that progress of mass interest. With the growing demand, automated poultry farming has become eminent that contributes enormously in economic growth. Smart poultry farms can emancipate the farmers from the traditionally tedious procedures which were outdated and time consuming. In preliminary stage, a smart poultry farm shows many distinctive features such as, automated food and water supply, egg collection, maintaining precise environmental factors etc. In this paper, Safety measures such as fire protection, anti-thief features which ensures an overall surveillance of the farm has been incorporated. Data storage through IoT is another enticing trait of this work which enables the users to Fig. out the required pre-steps to adopt before any endangerments can occur. The GSM module can also provide a real time protection of the farm by notifying the farmer through an SMS at any alarming situations. All these distinguished features have been realized and observed with very perfection and it can be concluded, with the integration of GSM and IoT the proposed project work has taken the poultry farming into next level of advancement.
Conventionally, the speed control manipulate of Doubly-Fed Induction Motor (DFIM) has been develo... more Conventionally, the speed control manipulate of Doubly-Fed Induction Motor (DFIM) has been developed primarily which is based on traditional Proportional-Plus-Integral (PI) controller due to its simple construction and implementation. The steady-state error minimization, overshoot removal and disturbance rejection are not possible in which the benefits of PI controller are chosen through trial and errors approach. The steady-state error and disturbance rejection may be viable, if the benefits of Proportional-Plus-Integral controller are chosen through right on the poles. But the overshoot elimination is not possible where the Proportional-Plus-Integral based controller is designed. In this paper, Integral-Plus-Proportional (IP) controller is proposed to design for speed control of the Doubly-Fed Induction Motor. The Integral-Plus-Proportional controller is well suited to minimize the overshoot problem that is arisen in Proportional-Plus-Integral controller. The performance of propos...
AIUB Journal of Science and Engineering (AJSE), 2018
In modern technology electrical differentials to design Electrical Vehicle (EV) are getting popul... more In modern technology electrical differentials to design Electrical Vehicle (EV) are getting popular for its simplicity, faster response, accurate control capability and other facility. The controller design for the distinctive motors is a captivating and challenging work to acquire sought execution appropriately. For this different kind of controller is used to get accurate results. For Induction Motor (IM) it is very important to control the speed and torque to get smooth control application. Field Oriented Control (FOC) aids the factor and empowers independent control of speed and torque by building up an autonomous relationship is created due to consideration of core loss and stray load losses while modeling Induction Motor which is neglected at most of the works. Here, Induction Motor is modeled with the Fuzzy Logic Controller for more accuracy and simplicity and the Sinusoidal Pulse Width Modulation (SPWM) is utilized as a part of the structure to investigate the performance of...
AIUB Journal of Science and Engineering (AJSE), 2020
Recently, permanent magnet synchronous generator (PMSG) is one of the most familiar type of gener... more Recently, permanent magnet synchronous generator (PMSG) is one of the most familiar type of generator for wind power plant (WPP). Generally, PMSG is connected to gird using back to back converter. During fault period, power imbalance situation is happened between machine side and gird converter. As a result, the DC-link voltage can be rise significantly which can damage the whole converter system. In this paper, a novel DC-Link protection system of buck converter based on fuzzy logic is designed in order to augment the transient stability of the PMSG system. The new buck converter along with its control system is designed to manage the supplied voltage of the braking resistor during fault period. For investigating the performance of the proposed system, fault analysis is performed on different case scenarios PSCAD/EMTDC software.
AIUB Journal of Science and Engineering (AJSE), 2017
PI Controller is one of the eminent controller which holds majority of the applications in indust... more PI Controller is one of the eminent controller which holds majority of the applications in industrial purposes. This paper encompasses an analysis on the performance of PI controller for DC-DC Boost converter for constant voltage application where codifications of gains of PI controller are done in terms of natural frequency and damping factor. The converter has been designed to operate in continuous conduction mode and the voltage mode control strategy has been proposed by using pulse width modulation (PWM) with the PI controller. A set of gain parameters of PI controller can be selected to obtain the output of the PI controller with low rise time, quick settling time and also with more stability features. The effectiveness of this boost (or step up) converter with different set of PI controller gains has been verified through simulation where MATLAB/Simpower is used as the utensil. All the simulation results intrinsically emphasized on efficient performance of the proposed control...
International Journal of Power Electronics and Drive Systems (IJPEDS), 2021
Large-scale grid-tied photovoltaic (PV) station are increasing rapidly. However, this large penet... more Large-scale grid-tied photovoltaic (PV) station are increasing rapidly. However, this large penetration of PV system creates frequency fluctuation in the grid due to the intermittency of solar irradiance. Therefore, in this paper, a robust droop control mechanism of the battery energy storage system (BESS) is developed in order to damp the frequency fluctuation of the multi-machine grid system due to variable active power injected from the PV panel. The proposed droop control strategy incorporates frequency error signal and dead-band for effective minimization of frequency fluctuation. The BESS system is used to consume/inject an effective amount of active power based upon the frequency oscillation of the grid system. The simulation analysis is carried out using PSCAD/EMTDC software to prove the effectiveness of the proposed droop control-based BESS system. The simulation result implies that the proposed scheme can efficiently curtail the frequency oscillation.
Electronics, 2020
Fixed speed wind turbine-squirrel cage induction generator (FSWT-SCIG)-based wind farms (WFs) are... more Fixed speed wind turbine-squirrel cage induction generator (FSWT-SCIG)-based wind farms (WFs) are increasing significantly. However, FSWT-SCIGs have no low voltage ride-through (LVRT) and frequency control capabilities, which creates a significant problem on power system transient and steady-state stability. This paper presents a new operational strategy to control the voltage and frequency of the entire power system, including large-scale FSWT-SCIG-based WFs, by using a battery storage system (BSS). The proposed cascaded control of the BSS is designed to provide effective quantity of reactive power during transient periods, to augment LVRT capability and real power during steady-state periods in order to damp frequency fluctuations. The cascaded control technique is built on four proportional integral (PI) controllers. The droop control technique is also adopted to ensure frequency control capability. Practical grid code is taken to demonstrate the LVRT capability. To evaluate the ...
AIUB Journal of Science and Engineering (AJSE), 2020
With the rising penetration of modern converter-based wind farm (WF) into the existing grid syste... more With the rising penetration of modern converter-based wind farm (WF) into the existing grid system deteriorates system inertia due to reduction of the capacity of conventional power stations which may lead to the frequency instability as well as power system transient instability. In order to solve this concern, this paper presents a robust virtual inertia control approach for battery storage system (BSS) to enhance the frequency stability of the grid system after the generation failure owing to severe grid disruption. The control approach integrated inertial controller based on the rate of change of frequency (ROCOF) and droop controller according to frequency deviation. The impacts of the proposed virtual inertia controller (VIC) is confirmed through simulation analysis on a multi-machine power system with conventional power stations, permanent magnet synchronous generator (PMSG) with full converter based WF and squirrel cage induction generator (SCIG) based WF. Simulation study c...
Electronics, 2022
Developing a mathematical model has become an inevitable need in studies of all disciplines. With... more Developing a mathematical model has become an inevitable need in studies of all disciplines. With advancements in technology, there is an emerging need to develop complex mathematical models. System identification is a popular way of constructing mathematical models of highly complex processes when an analytical model is not feasible. One of the many model architectures of system identification is to utilize a Local Model Network (LMN). Hierarchical Local Model Tree (HILOMOT) is an iterative LMN training algorithm that uses the axis-oblique split method to divide the input space hierarchically. The split positions of the local models directly influence the accuracy of the entire model. However, finding the best split positions of the local models presents a nonlinear optimization problem. This paper presents an optimized HILOMOT algorithm with enhanced Expectation–Maximization (EM) and Particle Swarm Optimization (PSO) algorithms which includes the normalization parameter and utiliz...
Fixed gains proportional plus integral (PI) controller which gains are chosen by trial and error ... more Fixed gains proportional plus integral (PI) controller which gains are chosen by trial and error method has been implemented in industrial applications for the speed control of ac drives. But the high performance of vector control (VC) interior permanent magnet synchronous motor (IPMSM) cannot be achieved with eliminating the overshoot for step change of desired speed and disturbance load torque by using only a set of fixed gains of PI controller. Moreover, the performance of desired speed becomes unsatisfactory due to the utilization of fixed gain PI controller against the variation of load torque and parameters. The performance and robustness of conventional PI controller can be improved by online tuning of PI controller gains. Therefore, an online gains tuning method of PI controller based on fuzzy logic is proposed in this paper for speed control of IPMSM taking core loss into account. The efficacy of the proposed controller is verified by computer simulation. The simulation res...
AIUB Journal of Science and Engineering (AJSE), 2020
Fixed speed wind turbine-squirrel cage induction generator (FSWT-SCIG) based wind farm (WF) is in... more Fixed speed wind turbine-squirrel cage induction generator (FSWT-SCIG) based wind farm (WF) is increasing significantly. However, FSWT-SCIG have no frequency control capability, which creates a significant problem on power system steady-state stability. This paper represents a new operational strategy to control frequency of the entire power system including large-scale FSWT-SCIG based WF by using battery storage system (BSS). The proposed cascaded control of BSS is designed to provide effective amount of real power during steady-state period to damp frequency fluctuations. To evaluate the validity of the proposed system, simulation studies are executed on a reformed IEEE nine-bus power system with three synchronous generators (SGs) and SCIG-based WF along with BSS. The simulation results indicate that the proposed system can be an effective solution to reduce frequency fluctuations of the hybrid power system during steady-state condition.
AIUB Journal of Science and Engineering (AJSE), 2018
The environment friendly blessings of Electrical Vehicles (EV), human beings are becoming extra i... more The environment friendly blessings of Electrical Vehicles (EV), human beings are becoming extra involved in the use of them alternatively than the usage of mechanical differentials. In electrical vehicles distinct sorts of electrical machines are used among them DFIM is used in this work. The challenging work is to design of a controller as the output of the motor has to match with vehicle input. So, far, most of the mentioned works have utilized Proportional-Integral (PI) controllers as the speed control. But, the negative aspects of PI controller are properly known, as its design depends on the specific motor parameters and the overall performance is sensitive to system disturbances. The fundamental goal of this paper is to replace the conventional PI controller by means of an IP controller which is successful of dealing with exceedingly non-linear DFIM motor for high performance application in Electrical Vehicle. The effectiveness of designed IP controller of an electrical differ...
Journal of Renewable Energy, 2014
This paper describes the design and implementation of an energy efficient solar tracking system f... more This paper describes the design and implementation of an energy efficient solar tracking system from a normal mechanical single axis to a hybrid dual axis. For optimizing the solar tracking mechanism electromechanical systems were evolved through implementation of different evolutional algorithms and methodologies. To present the tracker, a hybrid dual-axis solar tracking system is designed, built, and tested based on both the solar map and light sensor based continuous tracking mechanism. These light sensors also compare the darkness and cloudy and sunny conditions assisting daily tracking. The designed tracker can track sun’s apparent position at different months and seasons; thereby the electrical controlling device requires a real time clock device for guiding the tracking system in seeking solar position for the seasonal motion. So the combination of both of these tracking mechanisms made the designed tracker a hybrid one. The power gain and system power consumption are compare...
The principle of field oriented control (FOC) or vector control (VC) of induction motors (IMs) is... more The principle of field oriented control (FOC) or vector control (VC) of induction motors (IMs) is based on the control of both the magnitude and the phase of each phase current and voltage to achieve the decoupling control strategies between flux and torque. To control the flux and the torque precisely based on the FOC, core losses (CL) and stray load losses (SLL), which are generally neglected, should be considered in the mathematical model of IM to design the controller. In order to achieve the precise flux and torque control of IM, some of literatures have proposed to detuning method for FOC of IM to compensate the effects of CL and SLL. But it has seen that the mathematical modeling of detuning process is very complex which makes the complexity in the case of implementation also. In this paper, a novel FOC of IM with consideration of both CL and SLL is proposed. In this novel FOC of IM includes the decoupling control strategy which is easier than the detuning strategy. The effec...
AIUB Journal of Science and Engineering (AJSE), 2021
Due to the extensive integration of renewable energy sources (RESs), i.e., photovoltaic (PV) syst... more Due to the extensive integration of renewable energy sources (RESs), i.e., photovoltaic (PV) system, the future power system is developing into an inverter-based system from a dominated alternator-based power system. This massive penetration of inverter-based PV system reduced the system inertia and damping characteristics of the power grid, impacting the fault ride-through (FRT) capability and causes frequency instability. Modern grid codes require that PV systems should work in the same way as conventional power plants and assist the system during transient state. However, most of the conventional inverter control mechanisms failed to fulfill the requirements of grid codes, especially when the penetration ratio of the PV system is close to the conventional unit. Therefore, this paper proposes a virtual synchronous generator (VSG) control mechanism of PV system inverter to augment FRT competency and frequency stability. The proposed VSG control system mimics the behavior of convent...
Applied System Innovation
According to the grid code specifications, low voltage ride-through (LVRT) is one of the key fact... more According to the grid code specifications, low voltage ride-through (LVRT) is one of the key factors for grid-tied wind farms (WFs). Since fixed-speed wind turbines with squirrel cage induction generators (FSWT-SCIGs) require an adequate quantity of reactive power throughout the transient period, conventional WF consisting of SCIG do not typically have LVRT capabilities that may cause instability in the power system. However, variable-speed wind turbines with doubly fed induction generators (VSWT-DFIGs) have an adequate amount of LVRT enhancement competency, and the active and reactive power transmitted to the grid can also be controlled. Moreover, DFIG is quite expensive because of its partial rating (AC/DC/AC) converter than SCIG. Accordingly, combined installation of both WFs could be an effective solution. Hence, this paper illustrated a new rotor-side converter (RSC) control scheme, which played a significant role in ensuring the LVRT aptitude for a wide range of hybrid WF cons...
AIUB Journal of Science and Engineering (AJSE), 2021
Solar power stations worldwide have been rising every year as well as the usage of sustainable po... more Solar power stations worldwide have been rising every year as well as the usage of sustainable power has increased. The addition into the traditional electricity grid networks of renewable sources such as the photovoltaic (PV) system is an essential challenge, given its erratic power generation. The major issue is to detach PV from the faulty grid, which leads to fluctuation in the system's interconnected PV system and system-wide energy interruptions. The low voltage ride through (LVRT) enables the PV scheme should stay linked to the grid even under fault situations in short periods and must assist the grid return to regular situations according to the modern grid codes. Hence, this paper develops and analyzes five aspects of control strategy to increase PV station's LVRT capability. The in-depth simulation of the independent units of the grid-connected large-scale PV farm is accomplished using PSCAD/EMTDC to assess the feasibility of the suggested control tactic for the mo...
2021 International Conference on Automation, Control and Mechatronics for Industry 4.0 (ACMI)
AIUB Journal of Science and Engineering (AJSE)
An essential instrument for the operation of a power system is to monitor and analyze the data to... more An essential instrument for the operation of a power system is to monitor and analyze the data to find the fault and rectify it before the system collapses completely. This paper intents to utilize the idea to create a control system that will fulfill objectives like monitoring vital parameters controlling the power distribution, outage management by fault detection based on the variation of Voltage, Frequency, and Current & protection of the Circuit against any significant incidents by isolating the load from utility and flagging the information through feedback to the utility authority. The Project implements the high-end technology for IoT applications that will connect with the Microcontroller to receive the data at regular intervals and post the timestamped data in a cloud platform for remote monitoring and archiving. This innovation can reduce human dependency and overcome the whole outage situation by building a two-way communication that means electricity and information are...
Trends in Electrical Engineering, Aug 13, 2019
The DC motors are most suitable for wide range speed control and hence it is used in many adjusta... more The DC motors are most suitable for wide range speed control and hence it is used in many adjustable speed drives. The DC motors are generally fed by chopper circuit for improved performance. In order to get smooth and precise control over the speed of DC motor, many different types of controllers have already been introduced. In this paper, two discrete-time multi-input and multi-output optimal controllers, one for control of speed of DC motor and another for control of DC voltage of chopper, are designed. The state space models of DC motor and chopper circuit are developed to design the proposed controllers. Based on the developed state space model the proposed controllers are designed. The performances of controllers are verified using the MATLAB/SIMULINK contrivance. The simulation results show that, the proposed controller gives admirable control over the speed and the dc voltage respectively. Again the overall design exhibits ease, less complexity and robustness than any other conventional controllers. Keywords: Separately Excited DC Motor, Two Quadrant Chopper, Speed Control, Optimal Regulator
2019 International Conference on Robotics,Electrical and Signal Processing Techniques (ICREST), 2019
Advancement in technology has made regular life more easy and convenient. In every aspect of life... more Advancement in technology has made regular life more easy and convenient. In every aspect of life, it is essential to be updated that ensures that progress of mass interest. With the growing demand, automated poultry farming has become eminent that contributes enormously in economic growth. Smart poultry farms can emancipate the farmers from the traditionally tedious procedures which were outdated and time consuming. In preliminary stage, a smart poultry farm shows many distinctive features such as, automated food and water supply, egg collection, maintaining precise environmental factors etc. In this paper, Safety measures such as fire protection, anti-thief features which ensures an overall surveillance of the farm has been incorporated. Data storage through IoT is another enticing trait of this work which enables the users to Fig. out the required pre-steps to adopt before any endangerments can occur. The GSM module can also provide a real time protection of the farm by notifying the farmer through an SMS at any alarming situations. All these distinguished features have been realized and observed with very perfection and it can be concluded, with the integration of GSM and IoT the proposed project work has taken the poultry farming into next level of advancement.
Conventionally, the speed control manipulate of Doubly-Fed Induction Motor (DFIM) has been develo... more Conventionally, the speed control manipulate of Doubly-Fed Induction Motor (DFIM) has been developed primarily which is based on traditional Proportional-Plus-Integral (PI) controller due to its simple construction and implementation. The steady-state error minimization, overshoot removal and disturbance rejection are not possible in which the benefits of PI controller are chosen through trial and errors approach. The steady-state error and disturbance rejection may be viable, if the benefits of Proportional-Plus-Integral controller are chosen through right on the poles. But the overshoot elimination is not possible where the Proportional-Plus-Integral based controller is designed. In this paper, Integral-Plus-Proportional (IP) controller is proposed to design for speed control of the Doubly-Fed Induction Motor. The Integral-Plus-Proportional controller is well suited to minimize the overshoot problem that is arisen in Proportional-Plus-Integral controller. The performance of propos...
AIUB Journal of Science and Engineering (AJSE), 2018
In modern technology electrical differentials to design Electrical Vehicle (EV) are getting popul... more In modern technology electrical differentials to design Electrical Vehicle (EV) are getting popular for its simplicity, faster response, accurate control capability and other facility. The controller design for the distinctive motors is a captivating and challenging work to acquire sought execution appropriately. For this different kind of controller is used to get accurate results. For Induction Motor (IM) it is very important to control the speed and torque to get smooth control application. Field Oriented Control (FOC) aids the factor and empowers independent control of speed and torque by building up an autonomous relationship is created due to consideration of core loss and stray load losses while modeling Induction Motor which is neglected at most of the works. Here, Induction Motor is modeled with the Fuzzy Logic Controller for more accuracy and simplicity and the Sinusoidal Pulse Width Modulation (SPWM) is utilized as a part of the structure to investigate the performance of...
AIUB Journal of Science and Engineering (AJSE), 2020
Recently, permanent magnet synchronous generator (PMSG) is one of the most familiar type of gener... more Recently, permanent magnet synchronous generator (PMSG) is one of the most familiar type of generator for wind power plant (WPP). Generally, PMSG is connected to gird using back to back converter. During fault period, power imbalance situation is happened between machine side and gird converter. As a result, the DC-link voltage can be rise significantly which can damage the whole converter system. In this paper, a novel DC-Link protection system of buck converter based on fuzzy logic is designed in order to augment the transient stability of the PMSG system. The new buck converter along with its control system is designed to manage the supplied voltage of the braking resistor during fault period. For investigating the performance of the proposed system, fault analysis is performed on different case scenarios PSCAD/EMTDC software.
AIUB Journal of Science and Engineering (AJSE), 2017
PI Controller is one of the eminent controller which holds majority of the applications in indust... more PI Controller is one of the eminent controller which holds majority of the applications in industrial purposes. This paper encompasses an analysis on the performance of PI controller for DC-DC Boost converter for constant voltage application where codifications of gains of PI controller are done in terms of natural frequency and damping factor. The converter has been designed to operate in continuous conduction mode and the voltage mode control strategy has been proposed by using pulse width modulation (PWM) with the PI controller. A set of gain parameters of PI controller can be selected to obtain the output of the PI controller with low rise time, quick settling time and also with more stability features. The effectiveness of this boost (or step up) converter with different set of PI controller gains has been verified through simulation where MATLAB/Simpower is used as the utensil. All the simulation results intrinsically emphasized on efficient performance of the proposed control...
International Journal of Power Electronics and Drive Systems (IJPEDS), 2021
Large-scale grid-tied photovoltaic (PV) station are increasing rapidly. However, this large penet... more Large-scale grid-tied photovoltaic (PV) station are increasing rapidly. However, this large penetration of PV system creates frequency fluctuation in the grid due to the intermittency of solar irradiance. Therefore, in this paper, a robust droop control mechanism of the battery energy storage system (BESS) is developed in order to damp the frequency fluctuation of the multi-machine grid system due to variable active power injected from the PV panel. The proposed droop control strategy incorporates frequency error signal and dead-band for effective minimization of frequency fluctuation. The BESS system is used to consume/inject an effective amount of active power based upon the frequency oscillation of the grid system. The simulation analysis is carried out using PSCAD/EMTDC software to prove the effectiveness of the proposed droop control-based BESS system. The simulation result implies that the proposed scheme can efficiently curtail the frequency oscillation.
Electronics, 2020
Fixed speed wind turbine-squirrel cage induction generator (FSWT-SCIG)-based wind farms (WFs) are... more Fixed speed wind turbine-squirrel cage induction generator (FSWT-SCIG)-based wind farms (WFs) are increasing significantly. However, FSWT-SCIGs have no low voltage ride-through (LVRT) and frequency control capabilities, which creates a significant problem on power system transient and steady-state stability. This paper presents a new operational strategy to control the voltage and frequency of the entire power system, including large-scale FSWT-SCIG-based WFs, by using a battery storage system (BSS). The proposed cascaded control of the BSS is designed to provide effective quantity of reactive power during transient periods, to augment LVRT capability and real power during steady-state periods in order to damp frequency fluctuations. The cascaded control technique is built on four proportional integral (PI) controllers. The droop control technique is also adopted to ensure frequency control capability. Practical grid code is taken to demonstrate the LVRT capability. To evaluate the ...
AIUB Journal of Science and Engineering (AJSE), 2020
With the rising penetration of modern converter-based wind farm (WF) into the existing grid syste... more With the rising penetration of modern converter-based wind farm (WF) into the existing grid system deteriorates system inertia due to reduction of the capacity of conventional power stations which may lead to the frequency instability as well as power system transient instability. In order to solve this concern, this paper presents a robust virtual inertia control approach for battery storage system (BSS) to enhance the frequency stability of the grid system after the generation failure owing to severe grid disruption. The control approach integrated inertial controller based on the rate of change of frequency (ROCOF) and droop controller according to frequency deviation. The impacts of the proposed virtual inertia controller (VIC) is confirmed through simulation analysis on a multi-machine power system with conventional power stations, permanent magnet synchronous generator (PMSG) with full converter based WF and squirrel cage induction generator (SCIG) based WF. Simulation study c...
Electronics, 2022
Developing a mathematical model has become an inevitable need in studies of all disciplines. With... more Developing a mathematical model has become an inevitable need in studies of all disciplines. With advancements in technology, there is an emerging need to develop complex mathematical models. System identification is a popular way of constructing mathematical models of highly complex processes when an analytical model is not feasible. One of the many model architectures of system identification is to utilize a Local Model Network (LMN). Hierarchical Local Model Tree (HILOMOT) is an iterative LMN training algorithm that uses the axis-oblique split method to divide the input space hierarchically. The split positions of the local models directly influence the accuracy of the entire model. However, finding the best split positions of the local models presents a nonlinear optimization problem. This paper presents an optimized HILOMOT algorithm with enhanced Expectation–Maximization (EM) and Particle Swarm Optimization (PSO) algorithms which includes the normalization parameter and utiliz...
Fixed gains proportional plus integral (PI) controller which gains are chosen by trial and error ... more Fixed gains proportional plus integral (PI) controller which gains are chosen by trial and error method has been implemented in industrial applications for the speed control of ac drives. But the high performance of vector control (VC) interior permanent magnet synchronous motor (IPMSM) cannot be achieved with eliminating the overshoot for step change of desired speed and disturbance load torque by using only a set of fixed gains of PI controller. Moreover, the performance of desired speed becomes unsatisfactory due to the utilization of fixed gain PI controller against the variation of load torque and parameters. The performance and robustness of conventional PI controller can be improved by online tuning of PI controller gains. Therefore, an online gains tuning method of PI controller based on fuzzy logic is proposed in this paper for speed control of IPMSM taking core loss into account. The efficacy of the proposed controller is verified by computer simulation. The simulation res...
AIUB Journal of Science and Engineering (AJSE), 2020
Fixed speed wind turbine-squirrel cage induction generator (FSWT-SCIG) based wind farm (WF) is in... more Fixed speed wind turbine-squirrel cage induction generator (FSWT-SCIG) based wind farm (WF) is increasing significantly. However, FSWT-SCIG have no frequency control capability, which creates a significant problem on power system steady-state stability. This paper represents a new operational strategy to control frequency of the entire power system including large-scale FSWT-SCIG based WF by using battery storage system (BSS). The proposed cascaded control of BSS is designed to provide effective amount of real power during steady-state period to damp frequency fluctuations. To evaluate the validity of the proposed system, simulation studies are executed on a reformed IEEE nine-bus power system with three synchronous generators (SGs) and SCIG-based WF along with BSS. The simulation results indicate that the proposed system can be an effective solution to reduce frequency fluctuations of the hybrid power system during steady-state condition.
AIUB Journal of Science and Engineering (AJSE), 2018
The environment friendly blessings of Electrical Vehicles (EV), human beings are becoming extra i... more The environment friendly blessings of Electrical Vehicles (EV), human beings are becoming extra involved in the use of them alternatively than the usage of mechanical differentials. In electrical vehicles distinct sorts of electrical machines are used among them DFIM is used in this work. The challenging work is to design of a controller as the output of the motor has to match with vehicle input. So, far, most of the mentioned works have utilized Proportional-Integral (PI) controllers as the speed control. But, the negative aspects of PI controller are properly known, as its design depends on the specific motor parameters and the overall performance is sensitive to system disturbances. The fundamental goal of this paper is to replace the conventional PI controller by means of an IP controller which is successful of dealing with exceedingly non-linear DFIM motor for high performance application in Electrical Vehicle. The effectiveness of designed IP controller of an electrical differ...
Journal of Renewable Energy, 2014
This paper describes the design and implementation of an energy efficient solar tracking system f... more This paper describes the design and implementation of an energy efficient solar tracking system from a normal mechanical single axis to a hybrid dual axis. For optimizing the solar tracking mechanism electromechanical systems were evolved through implementation of different evolutional algorithms and methodologies. To present the tracker, a hybrid dual-axis solar tracking system is designed, built, and tested based on both the solar map and light sensor based continuous tracking mechanism. These light sensors also compare the darkness and cloudy and sunny conditions assisting daily tracking. The designed tracker can track sun’s apparent position at different months and seasons; thereby the electrical controlling device requires a real time clock device for guiding the tracking system in seeking solar position for the seasonal motion. So the combination of both of these tracking mechanisms made the designed tracker a hybrid one. The power gain and system power consumption are compare...
The principle of field oriented control (FOC) or vector control (VC) of induction motors (IMs) is... more The principle of field oriented control (FOC) or vector control (VC) of induction motors (IMs) is based on the control of both the magnitude and the phase of each phase current and voltage to achieve the decoupling control strategies between flux and torque. To control the flux and the torque precisely based on the FOC, core losses (CL) and stray load losses (SLL), which are generally neglected, should be considered in the mathematical model of IM to design the controller. In order to achieve the precise flux and torque control of IM, some of literatures have proposed to detuning method for FOC of IM to compensate the effects of CL and SLL. But it has seen that the mathematical modeling of detuning process is very complex which makes the complexity in the case of implementation also. In this paper, a novel FOC of IM with consideration of both CL and SLL is proposed. In this novel FOC of IM includes the decoupling control strategy which is easier than the detuning strategy. The effec...
AIUB Journal of Science and Engineering (AJSE), 2021
Due to the extensive integration of renewable energy sources (RESs), i.e., photovoltaic (PV) syst... more Due to the extensive integration of renewable energy sources (RESs), i.e., photovoltaic (PV) system, the future power system is developing into an inverter-based system from a dominated alternator-based power system. This massive penetration of inverter-based PV system reduced the system inertia and damping characteristics of the power grid, impacting the fault ride-through (FRT) capability and causes frequency instability. Modern grid codes require that PV systems should work in the same way as conventional power plants and assist the system during transient state. However, most of the conventional inverter control mechanisms failed to fulfill the requirements of grid codes, especially when the penetration ratio of the PV system is close to the conventional unit. Therefore, this paper proposes a virtual synchronous generator (VSG) control mechanism of PV system inverter to augment FRT competency and frequency stability. The proposed VSG control system mimics the behavior of convent...
Applied System Innovation
According to the grid code specifications, low voltage ride-through (LVRT) is one of the key fact... more According to the grid code specifications, low voltage ride-through (LVRT) is one of the key factors for grid-tied wind farms (WFs). Since fixed-speed wind turbines with squirrel cage induction generators (FSWT-SCIGs) require an adequate quantity of reactive power throughout the transient period, conventional WF consisting of SCIG do not typically have LVRT capabilities that may cause instability in the power system. However, variable-speed wind turbines with doubly fed induction generators (VSWT-DFIGs) have an adequate amount of LVRT enhancement competency, and the active and reactive power transmitted to the grid can also be controlled. Moreover, DFIG is quite expensive because of its partial rating (AC/DC/AC) converter than SCIG. Accordingly, combined installation of both WFs could be an effective solution. Hence, this paper illustrated a new rotor-side converter (RSC) control scheme, which played a significant role in ensuring the LVRT aptitude for a wide range of hybrid WF cons...
AIUB Journal of Science and Engineering (AJSE), 2021
Solar power stations worldwide have been rising every year as well as the usage of sustainable po... more Solar power stations worldwide have been rising every year as well as the usage of sustainable power has increased. The addition into the traditional electricity grid networks of renewable sources such as the photovoltaic (PV) system is an essential challenge, given its erratic power generation. The major issue is to detach PV from the faulty grid, which leads to fluctuation in the system's interconnected PV system and system-wide energy interruptions. The low voltage ride through (LVRT) enables the PV scheme should stay linked to the grid even under fault situations in short periods and must assist the grid return to regular situations according to the modern grid codes. Hence, this paper develops and analyzes five aspects of control strategy to increase PV station's LVRT capability. The in-depth simulation of the independent units of the grid-connected large-scale PV farm is accomplished using PSCAD/EMTDC to assess the feasibility of the suggested control tactic for the mo...
2021 International Conference on Automation, Control and Mechatronics for Industry 4.0 (ACMI)