TY - GEN
T1 - Flying capacitor multicell converter based dynamic voltage restorer
AU - Sadigh, Arash Khoshkbar
AU - Hosseini, Seyed Hossein
AU - Masoud Barakati, S.
AU - Gharehpetian, Gevorg
PY - 2009
Y1 - 2009
N2 - One of the major power quality problems in distribution systems are voltage sags. This paper deals with a dynamic voltage restorer (DVR) as one of the different solutions to compensate these sags and protect sensitive loads. However, the quality of DVR output voltage itself, such as THD, is important. So, in this paper a configuration of DVR based on flying capacitor multicell (FCM) converter is proposed. The main properties of FCM converter, which causes increase in the number of output voltage levels, are transformer-less operation and natural self-balancing of flying capacitors voltages. The proposed DVR consists of a set of series converter and shunt rectifier connected back-toback. To guarantee the proper operation of shunt rectifier and maintaining the dc link voltage at the desired value, which results in suitable performance of DVR, the DVR is characterized by installing the series converter on the sourceside and the shunt rectifier on the load-side. Also, the pre-sag compensation strategy and the proposed voltage sag detection and DVR reference voltages determination methods based on synchronous reference frame (SRF) are adopted as the control system. The proposed DVR is simulated using PSCAD/EMTDC software and simulation results are presented to validate its effectiveness.
AB - One of the major power quality problems in distribution systems are voltage sags. This paper deals with a dynamic voltage restorer (DVR) as one of the different solutions to compensate these sags and protect sensitive loads. However, the quality of DVR output voltage itself, such as THD, is important. So, in this paper a configuration of DVR based on flying capacitor multicell (FCM) converter is proposed. The main properties of FCM converter, which causes increase in the number of output voltage levels, are transformer-less operation and natural self-balancing of flying capacitors voltages. The proposed DVR consists of a set of series converter and shunt rectifier connected back-toback. To guarantee the proper operation of shunt rectifier and maintaining the dc link voltage at the desired value, which results in suitable performance of DVR, the DVR is characterized by installing the series converter on the sourceside and the shunt rectifier on the load-side. Also, the pre-sag compensation strategy and the proposed voltage sag detection and DVR reference voltages determination methods based on synchronous reference frame (SRF) are adopted as the control system. The proposed DVR is simulated using PSCAD/EMTDC software and simulation results are presented to validate its effectiveness.
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U2 - 10.1109/NAPS.2009.5484074
DO - 10.1109/NAPS.2009.5484074
M3 - Conference contribution
AN - SCOPUS:77954778183
SN - 9781424444281
T3 - 41st North American Power Symposium, NAPS 2009
BT - 41st North American Power Symposium, NAPS 2009
T2 - 41st North American Power Symposium, NAPS 2009
Y2 - 4 October 2009 through 6 October 2009
ER -