Mehrdad Beykverdi - Academia.edu (original) (raw)
Papers by Mehrdad Beykverdi
Regarding the high cost of PMU units, optimal placement and minimizing of their numbers are of gr... more Regarding the high cost of PMU units, optimal placement and minimizing of their numbers are of great importance. Also, this paper proposes a new procedure for determining the optimal placement and less numbers of PMUs in distribution network based on the best state estimation criterion. For Distribution State Estimation solution, combinations of Nelder-Mead (NM) simplex search and Ant Colony Optimization (ACO) algorithm have been used. The hybrid method can estimate voltage phasor at each node by minimizing difference between measured and calculated values of state variables and also, it can guarantee observability of distribution system under normal operation conditions. To demonstrate the effectiveness of new procedure, simulation studies are applied on 30bus radial test feeder. Finally, achievement results for convergence characterestic of DSE solution and estimation error of state variables with regard to the optimal placement and numbers of PMUs in distribution test feeder have been presented.
Review of energy technologies and policy research, 2014
Performance of the systems equipped with PWM inverters can be improved through increasing frequen... more Performance of the systems equipped with PWM inverters can be improved through increasing frequency of switching. However, frequency improvement made some troubles in the system such as electromagnetic interactions or interferences (EMI) and increased power loss. Generally in the inverters working based on PWM method, the losses of switching are so high, where the load is induction. But, in the presented method, it is possible to minimize the switching losses. In this investigation, by adding Snubber circuit in the driver circuit, switching losses significantly reduced. The results obtained from simulation showed that soft switching inverter is more efficient than hard switching inverter in terms of reduction of switching losses.
Decomposition refers to the strategy of breaking up a large, difficult-to-solve problem into two ... more Decomposition refers to the strategy of breaking up a large, difficult-to-solve problem into two or more smaller, easier-to-solve problems, such that the solution to the decomposed problems can be used to obtain the solution to the original problem. In the last years, decomposition techniques such as Benders decomposition are used efficiently and extensively to solve large scale optimization problems (particularly, in mixed integer variable optimization problems such as unit commitment and short term hydrothermal coordination). This paper reviews two basic decomposition methods (primal and dual decomposition) and used them to construct Dantzing-wolfe and Benders decomposition techniques.
PID parameter optimization is an important problem in control field. In this paper, we propose a ... more PID parameter optimization is an important problem in control field. In this paper, we propose a new powerful hybrid algorithm called "ICA-NM Hybrid Algorithm" to design an optimal PID controller for a sample system. The PID controller is designed in such way, minimized the sum of settling time, rise time, maximum overshoot and integral absolute error. This new algorithm is simulated with MATLAB programming. A comparison among ICA-NM Hybrid Algorithm and Imperialistic Competitive Algorithm and Genetic Algorithm is made through designing controller. The simulation result shows that the PID controller with ICA-NM Hybrid Algorithm has a fast convergence rate and better dynamic performance.
Journal of Intelligent & Fuzzy Systems, 2014
Fast and accurate detection of fault location in distribution networks, is one of the important i... more Fast and accurate detection of fault location in distribution networks, is one of the important issues in operation of the system. In this paper, an approach based on Binary Imperialistic Competitive algorithm and Nelder-Mead simplex search has been proposed for placement of fault indicators in distribution networks. By using this method, the problem of locating fault indicators can be solved faster and more accurately by minimizing of cost function. In this paper, in addition to describing the BICA-NM hybrid algorithm, the fault indicator placement has been implemented using this method on a test system, and the simulation results have been compared with Genetic algorithm GA, Binary Shuffled Frog Leap Algorithm BSFLA and Improved BSFLA IBSFLA and the accuracy and fastness of the proposed method has been demonstrated.
In this paper, we present a new method to determine the optimal location and parameter settings o... more In this paper, we present a new method to determine the optimal location and parameter settings of Unified Power Flow Controller (UPFC) for removing voltage violations and transmission lines overloading. UPFC is considered as the most powerful member of the FACTS devices, that it can control shunt and series power flow. This option gives to UPFC the power to control the voltage profile and transmission lines flow simultaneously. We used the Imperialistic Competitive Algorithm (ICA) to determine the optimal location and optimal parameter settings of UPFC to improve the performance of the power system specially removing voltage violations in the buses and solving transmission lines overloading to increase loadability in the power networks. This procedure is proposed to be applied on IEEE 14 bus system to show the validity of the method.
Journal of Islamic and Iranian Traditional Medicine, 2017
Background and Purpose: Healthy nutrition and preventive food strategies can play an important ro... more Background and Purpose: Healthy nutrition and preventive food strategies can play an important role in decreasing geriatric complications. According to the Persian medicine point of view, the first step on disease prevention and treatment is a healthy diet. Methods and Materials: A review on available literature including credible textbooks and scientific papers from both Persian medicine and conventional medicine was performed. Similarities and differences between the two medical viewpoints were evaluated and presented. Conclusion: in Persian medicine, healthy diet and nutrition for different age groups are described in detail. Some points presented in Persian medicine are in accordance with conventional medicine. On the other hand, the differences may provide valuable ideas for future research projects.
Article history: Received 16 November 2013 Received in revised form 18 Decomposition refers to th... more Article history: Received 16 November 2013 Received in revised form 18 Decomposition refers to the strategy of breaking up a large, difficult-to-solve problem into two or more smaller, easier-to-solve problems, such that the solution to the decomposed problems can be used to obtain the solution to the original problem. In the last years, decomposition techniques such as Benders decomposition are used efficiently and extensively to solve large scale optimization problems (particularly, in mixed integer variable optimization problems such as unit commitment and short term hydrothermal coordination). This paper reviews two basic decomposition methods (primal and dual decomposition) and used them to construct Dantzing-wolfe and Benders decomposition techniques.
PID parameter optimization is an important problem in control field. In this paper, we propose a ... more PID parameter optimization is an important problem in control field. In this paper, we propose a new powerful hybrid algorithm called "ICA-NM Hybrid Algorithm" to design an optimal PID controller for a sample system. The PID controller is designed in such way, minimized the sum of settling time, rise time, maximum overshoot and integral absolute error. This new algorithm is simulated with MATLAB programming. A comparison among ICA-NM Hybrid Algorithm and Imperialistic Competitive Algorithm and Genetic Algorithm is made through designing controller. The simulation result shows that the PID controller with ICANM Hybrid Algorithm has a fast convergence rate and better dynamic performance.
Mehrdad Beykverdi1, Babak Safari Chabok2, Ahmad Ashouri3 and Maziar Mortezaei Emamzadehhashemi4 1... more Mehrdad Beykverdi1, Babak Safari Chabok2, Ahmad Ashouri3 and Maziar Mortezaei Emamzadehhashemi4 1 Department of Electrical Engineering, Science and Research branch, Islamic Azad University, Tehran, Iran 2 Department of Power System Engineering, Tarbiat Modares University, Tehran, Iran 3 Department of Electrical Engineering, Khodabandeh branch, Islamic Azad University, Khodabandeh, Iran 4 Department of Electrical Engineering, University of Guilan, Rasht, Iran
Review of Energy Technologies and Policy Research, 2014
Performance of the systems equipped with PWM inverters can be improved through increasing frequen... more Performance of the systems equipped with PWM inverters can be improved through increasing frequency of switching. However, frequency improvement made some troubles in the system such as electromagnetic interactions or interferences (EMI) and increased power loss. Generally in the inverters working based on PWM method, the losses of switching are so high, where the load is induction. But, in the presented method, it is possible to minimize the switching losses. In this investigation, by adding Snubber circuit in the driver circuit, switching losses significantly reduced. The results obtained from simulation showed that soft switching inverter is more efficient than hard switching inverter in terms of reduction of switching losses.
Public Health Nutrition, 2014
ObjectiveWe aimed to examine the association between red meat consumption and stroke in a group o... more ObjectiveWe aimed to examine the association between red meat consumption and stroke in a group of Iranian adults.DesignA hospital-based case–control study.SettingThe study included stroke patients and hospital-based controls. Usual dietary intakes of participants were assessed by means of a validated 168-item semi-quantitative FFQ. Total red meat consumption was calculated by summing up the consumption of red, processed and visceral meats.SubjectsOne hundred and ninety-five cases were stroke patients hospitalized in the neurology ward and 195 controls were recruited from patients hospitalized in other wards with no history of cerebrovascular diseases or neurological disorders.ResultsParticipants with stroke were older, more likely to be male and less likely to be obese. Individuals in the highest tertile of red meat intake were 119 % more likely to have stroke (OR=2·19; 95 % CI 1·33, 3·60) compared with those in the lowest tertile. After controlling for age, sex and total energy in...
ABSTRACT Fast and accurate detection of fault location in distribution networks is one of the imp... more ABSTRACT Fast and accurate detection of fault location in distribution networks is one of the important issues in operation of electric lines. In this paper, application of IBSFLA and BSFLA algorithms has been proposed for placement of fault indicators in distribution networks. By using this method, the problem of locating fault indicators can be solved faster and more accurately by minimizing of cost function. In this paper, in addition to describing the Improved Binary Shuffled Frog Leaping Algorithm (IBSFLA) algorithm, the fault indicator placement has been implemented using this method on a test system, and the simulation results have been compared with those of BSFLA algorithm, and the accuracy and fastness of the proposed method has been demonstrated.
American journal of science, engineering and technology, Jan 5, 2017
This paper intended to control a DC microgrid in islanded operation mode using decentralized powe... more This paper intended to control a DC microgrid in islanded operation mode using decentralized power management strategies. The DC microgrid under study included a wind turbine generator (WTG), photovoltaic (PV), battery energy storage system (BESS) and dc constant power load. According to the newly proposed strategy, each of distributed generation sources of energy and battery energy storage system can be deployed independently within any controlled microgrid through the droop method. Proposed I/V characteristic curve could be regulated locally and in real-time based on the available power of DGs and the battery state of charge (SOC), to synchronize the module performances independently and establish the power balance in the DC microgrid. Proposed strategy for the battery enables the system to supply independently the power required for the load demand when the DGs are not capable of supplying the required power to the load. This can maintain the common bus voltage within the allowable range and establish the power balance in the DC microgrid. The proposed control strategy was applied locally and without dependency on telecommunication links or any centralized energy management system on each of the distributed generation modules and battery independently. The newly proposed power management strategy was simulated through the implementation of a low voltage DC microgrid in MATLAB/SIMULINK where its performance was evaluated.
his investigation tried to control a standalone hybrid DC microgrid in islanded operation mode by... more his investigation tried to control a standalone hybrid DC microgrid in islanded operation mode by using decentralized power management strategies. Unlike common approaches where a Photovoltaic (PV) module is controlled as current source, the proposed strategy controls PV arrays as a voltage source that follows the current/voltage adaptive characteristic curve. Proposed I/V characteristic for hybrid PV/battery adapts the hybrid unit behavior independently in accordance with the load demand. Hence, the PV module can spend its maximum power on load demand and supply the extra energy on charging the battery energy storage system (BESS), which will maintain the power balance within the DC microgrid and regulating DC bus voltage. The proposed control system can be applied on any DC microgrid to achieve control objectives through decentralized procedure, without need for telecommunication links or any central energy management system. In order to validate the proposed strategies, the contr...
This paper intended to control a DC microgrid in islanded operation mode using decentralized powe... more This paper intended to control a DC microgrid in islanded operation mode using decentralized power management strategies. The DC microgrid under study included a wind turbine generator (WTG), photovoltaic (PV), battery energy storage system (BESS) and dc constant power load. According to the newly proposed strategy, each of distributed generation sources of energy and battery energy storage system can be deployed independently within any controlled microgrid through the droop method. Proposed I/V characteristic curve could be regulated locally and in real-time based on the available power of DGs and the battery state of charge (SOC), to synchronize the module performances independently and establish the power balance in the DC microgrid. Proposed strategy for the battery enables the system to supply independently the power required for the load demand when the DGs are not capable of supplying the required power to the load. This can maintain the common bus voltage within the allowab...
This paper presented a new intelligent control strategy for DC microgrid in islanded operation mo... more This paper presented a new intelligent control strategy for DC microgrid in islanded operation mode based on droop control method. The DC microgrid under study included a Wind Turbine Generator (WTG), photovoltaic (PV), battery energy storage system (BESS) and a linear resistive load. According to the proposed method, each of distributed generation (DG) sources and BESS can be deployed independently within any controlled microgrid through the fuzzy control strategy. Proposed fuzzy control regulated virtual resistance of DGs and BESS unit locally and real-time based on the available power of DGs and the battery state of charge (SOC), to coordinate the module performances independently and establish the power balance and regulating DC bus voltage. Proposed control strategy for BESS enables the microgrid to supply independently the power required for the load demand when the DGs are not capable of supplying the required power to the load. The proposed fuzzy control strategy was applied...
This paper presents a new intelligent control strategy for DC microgrid in islanded operation mod... more This paper presents a new intelligent control strategy for DC microgrid in islanded operation mode based on droop control method. The DC microgrid under study included a Wind Turbine Generator (WTG), photovoltaic (PV), battery energy storage system (BESS) and a linear resistive load. According to the proposed method, each of distributed generation (DG) sources and BESS can be deployed independently within any controlled microgrid through the fuzzy control strategy. Proposed fuzzy control regulated virtual resistance of DGs and BESS unit locally and real-time based on the available power of DGs and the battery state of charge (SOC), to coordinate the module performances independently and establish the power balance and regulating DC bus voltage. Proposed control strategy for BESS enables the microgrid to supply independently the power required for the load demand when the DGs are not capable of supplying the required power to the load. The proposed fuzzy control strategy was applied ...
Regarding the high cost of PMU units, optimal placement and minimizing of their numbers are of gr... more Regarding the high cost of PMU units, optimal placement and minimizing of their numbers are of great importance. Also, this paper proposes a new procedure for determining the optimal placement and less numbers of PMUs in distribution network based on the best state estimation criterion. For Distribution State Estimation solution, combinations of Nelder-Mead (NM) simplex search and Ant Colony Optimization (ACO) algorithm have been used. The hybrid method can estimate voltage phasor at each node by minimizing difference between measured and calculated values of state variables and also, it can guarantee observability of distribution system under normal operation conditions. To demonstrate the effectiveness of new procedure, simulation studies are applied on 30bus radial test feeder. Finally, achievement results for convergence characterestic of DSE solution and estimation error of state variables with regard to the optimal placement and numbers of PMUs in distribution test feeder have been presented.
Review of energy technologies and policy research, 2014
Performance of the systems equipped with PWM inverters can be improved through increasing frequen... more Performance of the systems equipped with PWM inverters can be improved through increasing frequency of switching. However, frequency improvement made some troubles in the system such as electromagnetic interactions or interferences (EMI) and increased power loss. Generally in the inverters working based on PWM method, the losses of switching are so high, where the load is induction. But, in the presented method, it is possible to minimize the switching losses. In this investigation, by adding Snubber circuit in the driver circuit, switching losses significantly reduced. The results obtained from simulation showed that soft switching inverter is more efficient than hard switching inverter in terms of reduction of switching losses.
Decomposition refers to the strategy of breaking up a large, difficult-to-solve problem into two ... more Decomposition refers to the strategy of breaking up a large, difficult-to-solve problem into two or more smaller, easier-to-solve problems, such that the solution to the decomposed problems can be used to obtain the solution to the original problem. In the last years, decomposition techniques such as Benders decomposition are used efficiently and extensively to solve large scale optimization problems (particularly, in mixed integer variable optimization problems such as unit commitment and short term hydrothermal coordination). This paper reviews two basic decomposition methods (primal and dual decomposition) and used them to construct Dantzing-wolfe and Benders decomposition techniques.
PID parameter optimization is an important problem in control field. In this paper, we propose a ... more PID parameter optimization is an important problem in control field. In this paper, we propose a new powerful hybrid algorithm called "ICA-NM Hybrid Algorithm" to design an optimal PID controller for a sample system. The PID controller is designed in such way, minimized the sum of settling time, rise time, maximum overshoot and integral absolute error. This new algorithm is simulated with MATLAB programming. A comparison among ICA-NM Hybrid Algorithm and Imperialistic Competitive Algorithm and Genetic Algorithm is made through designing controller. The simulation result shows that the PID controller with ICA-NM Hybrid Algorithm has a fast convergence rate and better dynamic performance.
Journal of Intelligent & Fuzzy Systems, 2014
Fast and accurate detection of fault location in distribution networks, is one of the important i... more Fast and accurate detection of fault location in distribution networks, is one of the important issues in operation of the system. In this paper, an approach based on Binary Imperialistic Competitive algorithm and Nelder-Mead simplex search has been proposed for placement of fault indicators in distribution networks. By using this method, the problem of locating fault indicators can be solved faster and more accurately by minimizing of cost function. In this paper, in addition to describing the BICA-NM hybrid algorithm, the fault indicator placement has been implemented using this method on a test system, and the simulation results have been compared with Genetic algorithm GA, Binary Shuffled Frog Leap Algorithm BSFLA and Improved BSFLA IBSFLA and the accuracy and fastness of the proposed method has been demonstrated.
In this paper, we present a new method to determine the optimal location and parameter settings o... more In this paper, we present a new method to determine the optimal location and parameter settings of Unified Power Flow Controller (UPFC) for removing voltage violations and transmission lines overloading. UPFC is considered as the most powerful member of the FACTS devices, that it can control shunt and series power flow. This option gives to UPFC the power to control the voltage profile and transmission lines flow simultaneously. We used the Imperialistic Competitive Algorithm (ICA) to determine the optimal location and optimal parameter settings of UPFC to improve the performance of the power system specially removing voltage violations in the buses and solving transmission lines overloading to increase loadability in the power networks. This procedure is proposed to be applied on IEEE 14 bus system to show the validity of the method.
Journal of Islamic and Iranian Traditional Medicine, 2017
Background and Purpose: Healthy nutrition and preventive food strategies can play an important ro... more Background and Purpose: Healthy nutrition and preventive food strategies can play an important role in decreasing geriatric complications. According to the Persian medicine point of view, the first step on disease prevention and treatment is a healthy diet. Methods and Materials: A review on available literature including credible textbooks and scientific papers from both Persian medicine and conventional medicine was performed. Similarities and differences between the two medical viewpoints were evaluated and presented. Conclusion: in Persian medicine, healthy diet and nutrition for different age groups are described in detail. Some points presented in Persian medicine are in accordance with conventional medicine. On the other hand, the differences may provide valuable ideas for future research projects.
Article history: Received 16 November 2013 Received in revised form 18 Decomposition refers to th... more Article history: Received 16 November 2013 Received in revised form 18 Decomposition refers to the strategy of breaking up a large, difficult-to-solve problem into two or more smaller, easier-to-solve problems, such that the solution to the decomposed problems can be used to obtain the solution to the original problem. In the last years, decomposition techniques such as Benders decomposition are used efficiently and extensively to solve large scale optimization problems (particularly, in mixed integer variable optimization problems such as unit commitment and short term hydrothermal coordination). This paper reviews two basic decomposition methods (primal and dual decomposition) and used them to construct Dantzing-wolfe and Benders decomposition techniques.
PID parameter optimization is an important problem in control field. In this paper, we propose a ... more PID parameter optimization is an important problem in control field. In this paper, we propose a new powerful hybrid algorithm called "ICA-NM Hybrid Algorithm" to design an optimal PID controller for a sample system. The PID controller is designed in such way, minimized the sum of settling time, rise time, maximum overshoot and integral absolute error. This new algorithm is simulated with MATLAB programming. A comparison among ICA-NM Hybrid Algorithm and Imperialistic Competitive Algorithm and Genetic Algorithm is made through designing controller. The simulation result shows that the PID controller with ICANM Hybrid Algorithm has a fast convergence rate and better dynamic performance.
Mehrdad Beykverdi1, Babak Safari Chabok2, Ahmad Ashouri3 and Maziar Mortezaei Emamzadehhashemi4 1... more Mehrdad Beykverdi1, Babak Safari Chabok2, Ahmad Ashouri3 and Maziar Mortezaei Emamzadehhashemi4 1 Department of Electrical Engineering, Science and Research branch, Islamic Azad University, Tehran, Iran 2 Department of Power System Engineering, Tarbiat Modares University, Tehran, Iran 3 Department of Electrical Engineering, Khodabandeh branch, Islamic Azad University, Khodabandeh, Iran 4 Department of Electrical Engineering, University of Guilan, Rasht, Iran
Review of Energy Technologies and Policy Research, 2014
Performance of the systems equipped with PWM inverters can be improved through increasing frequen... more Performance of the systems equipped with PWM inverters can be improved through increasing frequency of switching. However, frequency improvement made some troubles in the system such as electromagnetic interactions or interferences (EMI) and increased power loss. Generally in the inverters working based on PWM method, the losses of switching are so high, where the load is induction. But, in the presented method, it is possible to minimize the switching losses. In this investigation, by adding Snubber circuit in the driver circuit, switching losses significantly reduced. The results obtained from simulation showed that soft switching inverter is more efficient than hard switching inverter in terms of reduction of switching losses.
Public Health Nutrition, 2014
ObjectiveWe aimed to examine the association between red meat consumption and stroke in a group o... more ObjectiveWe aimed to examine the association between red meat consumption and stroke in a group of Iranian adults.DesignA hospital-based case–control study.SettingThe study included stroke patients and hospital-based controls. Usual dietary intakes of participants were assessed by means of a validated 168-item semi-quantitative FFQ. Total red meat consumption was calculated by summing up the consumption of red, processed and visceral meats.SubjectsOne hundred and ninety-five cases were stroke patients hospitalized in the neurology ward and 195 controls were recruited from patients hospitalized in other wards with no history of cerebrovascular diseases or neurological disorders.ResultsParticipants with stroke were older, more likely to be male and less likely to be obese. Individuals in the highest tertile of red meat intake were 119 % more likely to have stroke (OR=2·19; 95 % CI 1·33, 3·60) compared with those in the lowest tertile. After controlling for age, sex and total energy in...
ABSTRACT Fast and accurate detection of fault location in distribution networks is one of the imp... more ABSTRACT Fast and accurate detection of fault location in distribution networks is one of the important issues in operation of electric lines. In this paper, application of IBSFLA and BSFLA algorithms has been proposed for placement of fault indicators in distribution networks. By using this method, the problem of locating fault indicators can be solved faster and more accurately by minimizing of cost function. In this paper, in addition to describing the Improved Binary Shuffled Frog Leaping Algorithm (IBSFLA) algorithm, the fault indicator placement has been implemented using this method on a test system, and the simulation results have been compared with those of BSFLA algorithm, and the accuracy and fastness of the proposed method has been demonstrated.
American journal of science, engineering and technology, Jan 5, 2017
This paper intended to control a DC microgrid in islanded operation mode using decentralized powe... more This paper intended to control a DC microgrid in islanded operation mode using decentralized power management strategies. The DC microgrid under study included a wind turbine generator (WTG), photovoltaic (PV), battery energy storage system (BESS) and dc constant power load. According to the newly proposed strategy, each of distributed generation sources of energy and battery energy storage system can be deployed independently within any controlled microgrid through the droop method. Proposed I/V characteristic curve could be regulated locally and in real-time based on the available power of DGs and the battery state of charge (SOC), to synchronize the module performances independently and establish the power balance in the DC microgrid. Proposed strategy for the battery enables the system to supply independently the power required for the load demand when the DGs are not capable of supplying the required power to the load. This can maintain the common bus voltage within the allowable range and establish the power balance in the DC microgrid. The proposed control strategy was applied locally and without dependency on telecommunication links or any centralized energy management system on each of the distributed generation modules and battery independently. The newly proposed power management strategy was simulated through the implementation of a low voltage DC microgrid in MATLAB/SIMULINK where its performance was evaluated.
his investigation tried to control a standalone hybrid DC microgrid in islanded operation mode by... more his investigation tried to control a standalone hybrid DC microgrid in islanded operation mode by using decentralized power management strategies. Unlike common approaches where a Photovoltaic (PV) module is controlled as current source, the proposed strategy controls PV arrays as a voltage source that follows the current/voltage adaptive characteristic curve. Proposed I/V characteristic for hybrid PV/battery adapts the hybrid unit behavior independently in accordance with the load demand. Hence, the PV module can spend its maximum power on load demand and supply the extra energy on charging the battery energy storage system (BESS), which will maintain the power balance within the DC microgrid and regulating DC bus voltage. The proposed control system can be applied on any DC microgrid to achieve control objectives through decentralized procedure, without need for telecommunication links or any central energy management system. In order to validate the proposed strategies, the contr...
This paper intended to control a DC microgrid in islanded operation mode using decentralized powe... more This paper intended to control a DC microgrid in islanded operation mode using decentralized power management strategies. The DC microgrid under study included a wind turbine generator (WTG), photovoltaic (PV), battery energy storage system (BESS) and dc constant power load. According to the newly proposed strategy, each of distributed generation sources of energy and battery energy storage system can be deployed independently within any controlled microgrid through the droop method. Proposed I/V characteristic curve could be regulated locally and in real-time based on the available power of DGs and the battery state of charge (SOC), to synchronize the module performances independently and establish the power balance in the DC microgrid. Proposed strategy for the battery enables the system to supply independently the power required for the load demand when the DGs are not capable of supplying the required power to the load. This can maintain the common bus voltage within the allowab...
This paper presented a new intelligent control strategy for DC microgrid in islanded operation mo... more This paper presented a new intelligent control strategy for DC microgrid in islanded operation mode based on droop control method. The DC microgrid under study included a Wind Turbine Generator (WTG), photovoltaic (PV), battery energy storage system (BESS) and a linear resistive load. According to the proposed method, each of distributed generation (DG) sources and BESS can be deployed independently within any controlled microgrid through the fuzzy control strategy. Proposed fuzzy control regulated virtual resistance of DGs and BESS unit locally and real-time based on the available power of DGs and the battery state of charge (SOC), to coordinate the module performances independently and establish the power balance and regulating DC bus voltage. Proposed control strategy for BESS enables the microgrid to supply independently the power required for the load demand when the DGs are not capable of supplying the required power to the load. The proposed fuzzy control strategy was applied...
This paper presents a new intelligent control strategy for DC microgrid in islanded operation mod... more This paper presents a new intelligent control strategy for DC microgrid in islanded operation mode based on droop control method. The DC microgrid under study included a Wind Turbine Generator (WTG), photovoltaic (PV), battery energy storage system (BESS) and a linear resistive load. According to the proposed method, each of distributed generation (DG) sources and BESS can be deployed independently within any controlled microgrid through the fuzzy control strategy. Proposed fuzzy control regulated virtual resistance of DGs and BESS unit locally and real-time based on the available power of DGs and the battery state of charge (SOC), to coordinate the module performances independently and establish the power balance and regulating DC bus voltage. Proposed control strategy for BESS enables the microgrid to supply independently the power required for the load demand when the DGs are not capable of supplying the required power to the load. The proposed fuzzy control strategy was applied ...