Flying capacitor multicell converter based dynamic voltage restorer
作者： Arash Khoshkbar Sadigh , Seyed Hossein Hosseini , S. Masoud Barakati , Gevorg Gharehpetian
DOI: 10.1109/NAPS.2009.5484074
关键词: Control system 、 Voltage 、 Engineering 、 Reference frame 、 Capacitor 、 Control theory 、 Shunt (electrical) 、 Voltage sag 、 Converters 、 Total harmonic distortion
摘要: One of the major power quality problems in distribution systems are voltage sags. This paper deals with a dynamic restorer (DVR) as one different solutions to compensate these sags and protect sensitive loads. However, DVR output itself, such THD, is important. So, this configuration based on flying capacitor multicell (FCM) converter proposed. The main properties FCM converter, which causes increase number levels, transformer-less operation natural self-balancing capacitors voltages. proposed consists set series shunt rectifier connected back-to-back. To guarantee proper maintaining dc link at desired value, results suitable performance DVR, characterized by installing source-side load-side. Also, pre-sag compensation strategy sag detection reference voltages determination methods synchronous frame (SRF) adopted control system. simulated using PSCAD/EMTDC software simulation presented validate its effectiveness.
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