Title :
Three-phase four-wire dynamic voltage restorer based on a new SVPWM algorithm
Author :
Wang, Kaifei ; Zhuo, Fang ; Li, Yandong ; Yang, Xu ; Wang, Zhaoan
Author_Institution :
Sch. of Electr. Eng., Xi´´an Jiaotong Univ., China
Abstract :
An uninterrupted three-phase dynamic voltage restorer based on three-phase four-wire inverter is described in this paper. A rectifier is used to supply the inverter of DVR and makes DVR compensate sags continuously. The soft phase locked loop method is used to detect the source voltage and the inverter is controlled to solve the zero sequence voltage of power system by a new voltage space vector PWM algorithm that is different from the traditional method. Two foundational vectors of the SVPWM algorithm are used to produce the zero sequence voltage in this paper. The main circuit and the control algorithm were verified by simulation and experiment based on 6 kW DVR system using a split-capacitor PWM inverter.
Keywords :
PWM invertors; phase locked loops; power capacitors; power supply quality; power system control; power system restoration; power system simulation; rectifying circuits; voltage control; 6 kW; dynamic voltage restorer; phase locked loop; pulse width modulation; rectifiers; space vector; split-capacitor PWM inverter; three-phase four-wire system; zero sequence voltage; Active filters; Circuits; Control systems; Power quality; Power system simulation; Power systems; Pulse width modulation inverters; Space vector pulse width modulation; Switches; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual
Print_ISBN :
0-7803-8399-0
DOI :
10.1109/PESC.2004.1355161
