Dheeraj Joshi - Academia.edu (original) (raw)

Papers by Dheeraj Joshi

Lecture Notes in Electrical Engineering, 2019

Electricity generated from the photovoltaic (PV) system plays an important role as renewable ener... more Electricity generated from the photovoltaic (PV) system plays an important role as renewable energy source due to zero green house gas emission and no fossil fuel consumption. Sunshine is accessible for longer hours per day and with high intensity in India due to location of its southern half in the torrid zone. Solar energy is thus one of the abundant renewable forms of energy available in India. This paper uses buck converter for PV emulator modeling and designing. This will reduce the time-space requirements, dependence of output on weather conditions, and overall cost incurred for PV system designing, testing, and maintenance. The purpose is to get the current–voltage (I–V) characteristics close to the real PV module.

In this paper the steady state performance of self excited induction generators is determined usi... more In this paper the steady state performance of self excited induction generators is determined using particle swarm optimization(PSO) technique. The analysis is carried for R-L load. Simulated results obtained using the particle swarm optimization technique via Matlab facilitate in exploring the performance of self-excited induction generator.

This paper basically deals with the steady state analysis of Self excited induction generators. M... more This paper basically deals with the steady state analysis of Self excited induction generators. MATLAB user friendly toolbox has been used to predict the performance of SEIG under different loading conditions. In this paper the algorithm to find the minimum capacitance required to calculate the excitation capacitance has been stated using the steady state analysis. In this model the excitation capacitance and the speed of the SEIG is kept constant and the experimental results and simulated results are verified.

Power Electronics, Drives, and Advanced Applications, 2020

Power Electronics, Drives, and Advanced Applications, 2020

2018 2nd IEEE International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES), 2018

Paper presents fuzzy based sensorless control strategy for grid connected doubly fed induction ge... more Paper presents fuzzy based sensorless control strategy for grid connected doubly fed induction generator. In this system doubly fed induction generator connected with pulse width modulated voltage source converter to the rotor and stator is connected to utility grid. Rotor side voltage source converter connected with uncontrolled diode rectifier through dc link and battery storage system. A fuzzy based controller is used to improve the performance of rotor side controller. Comparatively reduced cost can be achieved by proposed control technique as a single voltage source converter and an uncontrolled diode rectifier is used in place of conventional back to back converter. Simulation studies were performed to analyse the performance of the proposed control technique. The result shows that the proposed strategy enhances the system stability, power factor and also improves the power quality with change in system parameters such as wind sped and connected load.

Journal of emerging technologies and innovative research, 2018

 In this paper the analysis of doubly fed induction generator has been done for varying rotor re... more  In this paper the analysis of doubly fed induction generator has been done for varying rotor resistance. Effects of the rotor resistance and rotor injected voltage on the stator active and reactive power, rotor active and reactive power, stator and rotor currents and net power of doubly fed induction generator are studied, when the machine run with below synchronous speed and above synchronous speed. After finding the induction machine parameters, analysis is done by MATLAB/ Simulink. It has been shown that with variation in rotor resistance and rotor injected voltage would control the mode of operation of induction machine; motoring mode and generating mode.

2015 2nd International Conference on Computing for Sustainable Global Development (INDIACom), 2015

Computers applications have found wide spread applications `human-like abilities', capabiliti... more Computers applications have found wide spread applications `human-like abilities', capabilities to make judgments, guesses, change of opinions in fault diagnosis of power transformers in last two decades. Computer has reduced vagueness, uncertainties, analysis times, but quicker remedial actions during off-line and on-line fault diagnostic on power transformers. Data of the dissolved gases in oil-insulation of a power transformer can be incorporated into expert systems to facilitate decision making for fault diagnosis. Due to the diverse gas content of transformer oil, computer based Artificial Intelligence (AI) techniques and expert systems have been applied by the various researchers, scientists, different organizations and utilities. Various AI techniques studied and applied by the researches for dissolved gas analysis (DGA) in power transformers. For high accuracy, time, easiness, economy and to overcome the short falls of individual AI techniques, the combination of two or/...

2020 First IEEE International Conference on Measurement, Instrumentation, Control and Automation (ICMICA), 2020

This work proposes the performance of a 4-switch 3-phase inverter fed, cost-effective induction m... more This work proposes the performance of a 4-switch 3-phase inverter fed, cost-effective induction motor drive. The cost of inverter, switching losses and complexity due to interface circuits to generate 6 PWM logic signals reduces. The gating pulse technique here is adaptive-carrier based PWM which can be effectively used to pulse the 4-switch 3-phase inverter. Using this technique calculation time can be reduced and linear-modulation in over-modulation region can be achieved. The performance analysis of the proposed 4-switch 3-phase inverter topology fed induction motor drive is made in terms of THD in stator current and the speed response. This proposed method to fed induction motor drive using 4-switch 3-phase inverter is found acceptable while considering its cost reduction and other advantageous features.

Studies in Infrastructure and Control, 2021

In this work, a novel intelligent control strategy is proposed for the Multi-Input Multi-Output (... more In this work, a novel intelligent control strategy is proposed for the Multi-Input Multi-Output (MIMO) DC-to-DC converter suitable for electrical vehicle (EV) applications. In this work, two-input and two-output DC–DC converter is considered. Genetic algorithm, a nature-inspired algorithm is used to search for the optimized parameters of Proportional–Integral (PI) controller applied to MIMO converter. Also, a trained neural network is used to enhance the performance of the controller under varying load conditions. Effectiveness of the proposed control technique is validated by performing simulation on MATLAB platform.

2020 First IEEE International Conference on Measurement, Instrumentation, Control and Automation (ICMICA), 2020

This paper analyzes a non-isolated multiport DCDC boost converter. The converter makes use of jus... more This paper analyzes a non-isolated multiport DCDC boost converter. The converter makes use of just one inductor compensating the space constraints in various applications. This converter presented hereby uses two input sources and feeds the power to two distinct loads. The multiport converter feeds output at different multiple voltages, making it appropriate for DC distribution systems and EV applications. Future renewable DC sources can be integrated with the converter for simpler control. Discharging mode of the converter is modelled and analyzed. Averaged state space model is created to remove non-linearity due to switching and further small signal analysis is performed and transfer functions are obtained. Using these transfer functions, bode plots are obtained for controller design and controllers such as PI and ANN are simulated and compared to evaluate system performance. Simulated results validate the performance of the multiport converter.

2020 IEEE International Students' Conference on Electrical,Electronics and Computer Science (SCEECS), 2020

During the rise of space technology in 1960 which led to the increase in development of power sup... more During the rise of space technology in 1960 which led to the increase in development of power supplies that are efficient, highly reliable, light weight and small. The ideas were injected by the researchers and engineers in the field of power electronics and switch mode power supplies came into existence. Analysis and design of DC–DC converters which offers high efficiency, small converters with the implementation of isolation transformer can have numerous outputs of various magnitude and polarities. The regulated power supplies of these converters have wide application in the areas like industrial automation, digital systems, charging stations etc. where in a low voltage, high current with low ripple power supply has significant role. This paper analyzes and design the Multioutput Flyback converter (230V DC – 180V/5V DC).

International Journal of Innovative Technology and Exploring Engineering, 2019

Due to the advancement in the semiconductor technology DC-DC converters are gaining the importanc... more Due to the advancement in the semiconductor technology DC-DC converters are gaining the importance in several industrial applications. They form the core of the switched mode power supplies used in real time applications. But the conventional DC -DC converter contains the voltage ripples due to the effect of the parasitic elements which is undesirable. The derived topologies of DC –DC converters from the conventional pumps eradicates this effect. In this paper the superlift LUO DC-DC converter will be presented which can replace the conventional converters. The effect of the parasitic elements is eradicated in superlift converter and range of the boosting the voltage level is high which will reduce the charging time and can be applicable for charging of o electric vehicles. The optimized proportional and integral controller using particle swarm optimization is applied to the presented converters.

Electric Power Systems Research, 1991

Abstract In the present paper, the steady-state analysis of a three-phase self-excited induction ... more Abstract In the present paper, the steady-state analysis of a three-phase self-excited induction generator (SEIG) having discrete switching capacitors and an AC-DC link is investigated. A model of the whole system is developed to accommodate the various combinations of converters in the AC-DC link. A computer algorithm for predicting the system performance is developed. The number of switching capacitors required for loading the machine from no load to full load is computed. A discrete capacitor switching scheme for the generator to feed the isolated load directly while maintaining its terminal voltage within certain limits from no load to full load is investigated. The effect of speed on the excitation requirement of the machine is also studied.

Lecture Notes in Electrical Engineering, 2019

Electricity generated from the photovoltaic (PV) system plays an important role as renewable ener... more Electricity generated from the photovoltaic (PV) system plays an important role as renewable energy source due to zero green house gas emission and no fossil fuel consumption. Sunshine is accessible for longer hours per day and with high intensity in India due to location of its southern half in the torrid zone. Solar energy is thus one of the abundant renewable forms of energy available in India. This paper uses buck converter for PV emulator modeling and designing. This will reduce the time-space requirements, dependence of output on weather conditions, and overall cost incurred for PV system designing, testing, and maintenance. The purpose is to get the current–voltage (I–V) characteristics close to the real PV module.

In this paper the steady state performance of self excited induction generators is determined usi... more In this paper the steady state performance of self excited induction generators is determined using particle swarm optimization(PSO) technique. The analysis is carried for R-L load. Simulated results obtained using the particle swarm optimization technique via Matlab facilitate in exploring the performance of self-excited induction generator.

This paper basically deals with the steady state analysis of Self excited induction generators. M... more This paper basically deals with the steady state analysis of Self excited induction generators. MATLAB user friendly toolbox has been used to predict the performance of SEIG under different loading conditions. In this paper the algorithm to find the minimum capacitance required to calculate the excitation capacitance has been stated using the steady state analysis. In this model the excitation capacitance and the speed of the SEIG is kept constant and the experimental results and simulated results are verified.

Power Electronics, Drives, and Advanced Applications, 2020

Power Electronics, Drives, and Advanced Applications, 2020

2018 2nd IEEE International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES), 2018

Paper presents fuzzy based sensorless control strategy for grid connected doubly fed induction ge... more Paper presents fuzzy based sensorless control strategy for grid connected doubly fed induction generator. In this system doubly fed induction generator connected with pulse width modulated voltage source converter to the rotor and stator is connected to utility grid. Rotor side voltage source converter connected with uncontrolled diode rectifier through dc link and battery storage system. A fuzzy based controller is used to improve the performance of rotor side controller. Comparatively reduced cost can be achieved by proposed control technique as a single voltage source converter and an uncontrolled diode rectifier is used in place of conventional back to back converter. Simulation studies were performed to analyse the performance of the proposed control technique. The result shows that the proposed strategy enhances the system stability, power factor and also improves the power quality with change in system parameters such as wind sped and connected load.

Journal of emerging technologies and innovative research, 2018

 In this paper the analysis of doubly fed induction generator has been done for varying rotor re... more  In this paper the analysis of doubly fed induction generator has been done for varying rotor resistance. Effects of the rotor resistance and rotor injected voltage on the stator active and reactive power, rotor active and reactive power, stator and rotor currents and net power of doubly fed induction generator are studied, when the machine run with below synchronous speed and above synchronous speed. After finding the induction machine parameters, analysis is done by MATLAB/ Simulink. It has been shown that with variation in rotor resistance and rotor injected voltage would control the mode of operation of induction machine; motoring mode and generating mode.

2015 2nd International Conference on Computing for Sustainable Global Development (INDIACom), 2015

Computers applications have found wide spread applications `human-like abilities', capabiliti... more Computers applications have found wide spread applications `human-like abilities', capabilities to make judgments, guesses, change of opinions in fault diagnosis of power transformers in last two decades. Computer has reduced vagueness, uncertainties, analysis times, but quicker remedial actions during off-line and on-line fault diagnostic on power transformers. Data of the dissolved gases in oil-insulation of a power transformer can be incorporated into expert systems to facilitate decision making for fault diagnosis. Due to the diverse gas content of transformer oil, computer based Artificial Intelligence (AI) techniques and expert systems have been applied by the various researchers, scientists, different organizations and utilities. Various AI techniques studied and applied by the researches for dissolved gas analysis (DGA) in power transformers. For high accuracy, time, easiness, economy and to overcome the short falls of individual AI techniques, the combination of two or/...

2020 First IEEE International Conference on Measurement, Instrumentation, Control and Automation (ICMICA), 2020

This work proposes the performance of a 4-switch 3-phase inverter fed, cost-effective induction m... more This work proposes the performance of a 4-switch 3-phase inverter fed, cost-effective induction motor drive. The cost of inverter, switching losses and complexity due to interface circuits to generate 6 PWM logic signals reduces. The gating pulse technique here is adaptive-carrier based PWM which can be effectively used to pulse the 4-switch 3-phase inverter. Using this technique calculation time can be reduced and linear-modulation in over-modulation region can be achieved. The performance analysis of the proposed 4-switch 3-phase inverter topology fed induction motor drive is made in terms of THD in stator current and the speed response. This proposed method to fed induction motor drive using 4-switch 3-phase inverter is found acceptable while considering its cost reduction and other advantageous features.

Studies in Infrastructure and Control, 2021

In this work, a novel intelligent control strategy is proposed for the Multi-Input Multi-Output (... more In this work, a novel intelligent control strategy is proposed for the Multi-Input Multi-Output (MIMO) DC-to-DC converter suitable for electrical vehicle (EV) applications. In this work, two-input and two-output DC–DC converter is considered. Genetic algorithm, a nature-inspired algorithm is used to search for the optimized parameters of Proportional–Integral (PI) controller applied to MIMO converter. Also, a trained neural network is used to enhance the performance of the controller under varying load conditions. Effectiveness of the proposed control technique is validated by performing simulation on MATLAB platform.

2020 First IEEE International Conference on Measurement, Instrumentation, Control and Automation (ICMICA), 2020

This paper analyzes a non-isolated multiport DCDC boost converter. The converter makes use of jus... more This paper analyzes a non-isolated multiport DCDC boost converter. The converter makes use of just one inductor compensating the space constraints in various applications. This converter presented hereby uses two input sources and feeds the power to two distinct loads. The multiport converter feeds output at different multiple voltages, making it appropriate for DC distribution systems and EV applications. Future renewable DC sources can be integrated with the converter for simpler control. Discharging mode of the converter is modelled and analyzed. Averaged state space model is created to remove non-linearity due to switching and further small signal analysis is performed and transfer functions are obtained. Using these transfer functions, bode plots are obtained for controller design and controllers such as PI and ANN are simulated and compared to evaluate system performance. Simulated results validate the performance of the multiport converter.

2020 IEEE International Students' Conference on Electrical,Electronics and Computer Science (SCEECS), 2020

During the rise of space technology in 1960 which led to the increase in development of power sup... more During the rise of space technology in 1960 which led to the increase in development of power supplies that are efficient, highly reliable, light weight and small. The ideas were injected by the researchers and engineers in the field of power electronics and switch mode power supplies came into existence. Analysis and design of DC–DC converters which offers high efficiency, small converters with the implementation of isolation transformer can have numerous outputs of various magnitude and polarities. The regulated power supplies of these converters have wide application in the areas like industrial automation, digital systems, charging stations etc. where in a low voltage, high current with low ripple power supply has significant role. This paper analyzes and design the Multioutput Flyback converter (230V DC – 180V/5V DC).

International Journal of Innovative Technology and Exploring Engineering, 2019

Due to the advancement in the semiconductor technology DC-DC converters are gaining the importanc... more Due to the advancement in the semiconductor technology DC-DC converters are gaining the importance in several industrial applications. They form the core of the switched mode power supplies used in real time applications. But the conventional DC -DC converter contains the voltage ripples due to the effect of the parasitic elements which is undesirable. The derived topologies of DC –DC converters from the conventional pumps eradicates this effect. In this paper the superlift LUO DC-DC converter will be presented which can replace the conventional converters. The effect of the parasitic elements is eradicated in superlift converter and range of the boosting the voltage level is high which will reduce the charging time and can be applicable for charging of o electric vehicles. The optimized proportional and integral controller using particle swarm optimization is applied to the presented converters.

Electric Power Systems Research, 1991

Abstract In the present paper, the steady-state analysis of a three-phase self-excited induction ... more Abstract In the present paper, the steady-state analysis of a three-phase self-excited induction generator (SEIG) having discrete switching capacitors and an AC-DC link is investigated. A model of the whole system is developed to accommodate the various combinations of converters in the AC-DC link. A computer algorithm for predicting the system performance is developed. The number of switching capacitors required for loading the machine from no load to full load is computed. A discrete capacitor switching scheme for the generator to feed the isolated load directly while maintaining its terminal voltage within certain limits from no load to full load is investigated. The effect of speed on the excitation requirement of the machine is also studied.