TY - GEN
T1 - Capacitor voltage balancing in neutral clamped inverters for DSTATCOM application
AU - Srikanthan, S.
AU - Mishra, Mahesh K.
AU - Kumar, B. Kalyan
AU - Bhaskar, K. Srinivas
PY - 2009
Y1 - 2009
N2 - Multilevel neutral point clamped inverter systems are increasingly used in load compensation applications. But, the most significant problem associated with these compensators is the capacitor voltage imbalances and drift due to dc components in the zero sequence current, resulting in degradation of tracking performance of the voltage source inverter. This paper proposes a carrier based PWM control for an inverter-chopper circuit in order to regulate the capacitor voltages to their reference values. To demonstrate the simplicity and effectiveness of the above control scheme, a three-phase four-wire, three-level neutral point clamped compensator system is taken as an example. Detailed simulation has been carried out in PSCAD 4.2.1. Experiments are conducted to validate the proposed control scheme.
AB - Multilevel neutral point clamped inverter systems are increasingly used in load compensation applications. But, the most significant problem associated with these compensators is the capacitor voltage imbalances and drift due to dc components in the zero sequence current, resulting in degradation of tracking performance of the voltage source inverter. This paper proposes a carrier based PWM control for an inverter-chopper circuit in order to regulate the capacitor voltages to their reference values. To demonstrate the simplicity and effectiveness of the above control scheme, a three-phase four-wire, three-level neutral point clamped compensator system is taken as an example. Detailed simulation has been carried out in PSCAD 4.2.1. Experiments are conducted to validate the proposed control scheme.
UR - http://www.scopus.com/inward/record.url?scp=70349321737&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349321737&partnerID=8YFLogxK
U2 - 10.1109/POWERENG.2009.4915147
DO - 10.1109/POWERENG.2009.4915147
M3 - Conference contribution
AN - SCOPUS:70349321737
SN - 9781424422913
T3 - POWERENG 2009 - 2nd International Conference on Power Engineering, Energy and Electrical Drives Proceedings
SP - 558
EP - 563
BT - POWERENG 2009 - 2nd International Conference on Power Engineering, Energy and Electrical Drives Proceedings
T2 - 2nd International Conference on Power Engineering, Energy and Electrical Drives, POWERENG 2009
Y2 - 18 March 2009 through 20 March 2009
ER -