TY - GEN
T1 - Dynamic performance analysis of potential current control strategies for grid connected applications
AU - Saleh, Khaled
AU - Al-Obaidi, Abdullah
AU - Al Khuffash, Kamal
AU - Lamont, Lisa Ann
AU - El-Saadany, Ehab
PY - 2013
Y1 - 2013
N2 - Environmental concerns were raised due to the recent demand increase for energy which resulted in higher CO2 emissions. Hence, it became essential to research a different energy source to meet the increasing demand. Since Photovoltaics (PV) were found to be a promising source, the governments started to support grid connected PV projects. However, grid connected PV systems cause many stability issues. Therefore, controlling methods must be implemented. Several control techniques have been proposed for grid connected applications in the last few decades. The controllers attempt to achieve stability, low harmonic content and fast dynamic response. However, tradeoffs are usually required. In order to understand the potential developments in this field, the paper will present three different current control strategies used in grid connected systems, compare them and recommend the usage of the most suitable. This was achieved by developing a MATLAB/Simulink model of a photovoltaic grid connected system in order to simulate case studies that tests Voltage Oriented Current Control (VOC), Direct Power Control (DPC), and PQ Synchronous Control (PQSC) topologies under different scenarios. The model configuration used ensures realistic simulation conditions in order to study the controllers thoroughly. Case studies are simulated in order to investigate the three controllers' stability and dynamic response under variable irradiance, Single Line to Ground (SLG) fault and three phase fault. Such case studies results can act as benchmarks that can be used by other researchers to compare their controller's performance against a standard system and check for improvements.
AB - Environmental concerns were raised due to the recent demand increase for energy which resulted in higher CO2 emissions. Hence, it became essential to research a different energy source to meet the increasing demand. Since Photovoltaics (PV) were found to be a promising source, the governments started to support grid connected PV projects. However, grid connected PV systems cause many stability issues. Therefore, controlling methods must be implemented. Several control techniques have been proposed for grid connected applications in the last few decades. The controllers attempt to achieve stability, low harmonic content and fast dynamic response. However, tradeoffs are usually required. In order to understand the potential developments in this field, the paper will present three different current control strategies used in grid connected systems, compare them and recommend the usage of the most suitable. This was achieved by developing a MATLAB/Simulink model of a photovoltaic grid connected system in order to simulate case studies that tests Voltage Oriented Current Control (VOC), Direct Power Control (DPC), and PQ Synchronous Control (PQSC) topologies under different scenarios. The model configuration used ensures realistic simulation conditions in order to study the controllers thoroughly. Case studies are simulated in order to investigate the three controllers' stability and dynamic response under variable irradiance, Single Line to Ground (SLG) fault and three phase fault. Such case studies results can act as benchmarks that can be used by other researchers to compare their controller's performance against a standard system and check for improvements.
KW - Current Controller
KW - Direct Power Control
KW - Grid-connected
KW - MATLAB/Simulink
KW - Photovoltaic
KW - Stability
KW - Voltage Oriented Control
UR - http://www.scopus.com/inward/record.url?scp=84893198101&partnerID=8YFLogxK
U2 - 10.1109/PESMG.2013.6672090
DO - 10.1109/PESMG.2013.6672090
M3 - Conference contribution
AN - SCOPUS:84893198101
SN - 9781479913039
T3 - IEEE Power and Energy Society General Meeting
BT - 2013 IEEE Power and Energy Society General Meeting, PES 2013
T2 - 2013 IEEE Power and Energy Society General Meeting, PES 2013
Y2 - 21 July 2013 through 25 July 2013
ER -