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Modified direct power control for PWM rectifier under unbalanced grid voltage conditions

  • Hongjun Chen
  • , Gaoxing Xing
  • , Xin Zhou
  • , Ming Zhang
  • , Yuepeng Qu
  • Harbin Institute of Technology

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

Abstract

Under the unbalanced power grid voltage conditions, three-phase voltage source PWM rectifier would produce non-sinusoidal and negative sequence current, fluctuations of active and reactive power. To deal with these problems, the mathematical model is established in the stationary αβ frame, then a dual power control scheme is presented to control the active and reactive power independently. By setting reference of power inner loop, the negative sequence current can be eliminated and grid current is sinusoidal. The proportional resonant controller in the outer loop suppresses the DC-link ripple. The PI repetitive control is applied in the inner loop to eliminate active and reactive power oscillation. Test results show the good performance of the proposed strategy.

Original languageEnglish
Title of host publicationProceedings of the 32nd Chinese Control Conference, CCC 2013
PublisherIEEE Computer Society
Pages8874-8878
Number of pages5
ISBN (Print)9789881563835
StatePublished - 18 Oct 2013
Event32nd Chinese Control Conference, CCC 2013 - Xi'an, China
Duration: 26 Jul 201328 Jul 2013

Publication series

NameChinese Control Conference, CCC
ISSN (Print)1934-1768
ISSN (Electronic)2161-2927

Conference

Conference32nd Chinese Control Conference, CCC 2013
Country/TerritoryChina
CityXi'an
Period26/07/1328/07/13

Keywords

  • Dual power control scheme
  • PWM rectifier
  • Unbalanced grid voltage
  • repetitive co

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