A three-phase four-wire AVR with IP control under unipolar PWM operation

Kuo Kai Shyu, Ming Ji Yang, Yen Mo Chen, Yi Fei Lin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, a three-phase four-wire AC voltage regulator (AVR) is proposed. The system consists of three independent modules; each includes its own AC chopper, LC filter and series transformer. The unipolar pulse width modulation (PWM) is used to achieve fast response. The compensation voltage, positive or negative, can be generated by simply controlling the duty cycle of the power switches. Consequently, variations of the utility voltage would be restrained. Through the fixed-point digital signal microcontroller, an integral-proportional (IP) controller is implemented using a fast sensing technique of the output voltage. A 30-kVA prototype is constructed and the experimental results show that the system is with fast response and efficiency. Moreover, the harmonic components of the inverter output voltage are reduced.

Original languageEnglish
Title of host publicationInternational Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006
Pages1326-1331
Number of pages6
DOIs
StatePublished - 2006
EventInternational Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006 - Taormina, Italy
Duration: 23 May 200626 May 2006

Publication series

NameInternational Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006
Volume2006

Conference

ConferenceInternational Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006
Country/TerritoryItaly
CityTaormina
Period23/05/0626/05/06

Keywords

  • AC chopper
  • AC voltage regulator
  • Integral-proportional controller
  • Unipolar pulse width modulation

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