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The research on the digital controlled effect of performance on the PWM inverter

  • Hongtao Shan
  • , Yong Kang
  • , Xuejuan Kong
  • , Zhao Liu
  • , Mi Yu
  • , Hongbo Li
  • , Fang Luo
  • , Liming Liu
  • Huazhong University of Science and Technology
  • Huibei Automobile Industrial Institute
  • Shenzhen Santak Power Co. Ltd.

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

11 Scopus citations

Abstract

The traditional PID control strategy which is realized in digital method can't achieve better performance than that in analog control. The reason was analyzed why the digital process influences the digital controlled PWM inverter's performance in this paper. One is the process of the zero-order hold. Another one is one-step-delay control which is usually adopted in digital control. Three aspects were analyzed in which influence the digital controlled PWM inverter's performance: (1) how the process of zero-order-hold effects the open-loop frequency property of the digital controlled inverter system (2) how the process of zero-order-hold effects the system's stability (3) how the one-step-delay control effects the system's stability. On the base of setting up discrete mathematical model of the digital controlled inverter system, theory deduction and simulations were done in the condition of P regulator Relevant experiments verify the rightness of the analysis and direction for the design of the digital controlled PWM inverter were given. Finally relevant experiments verify the theoretical analysis.

Original languageEnglish
Title of host publicationINTELEC 2008
Subtitle of host publication30th Annual International Telecommunications Energy Conference
DOIs
StatePublished - 2008
Event30th Annual International Telecommunications Energy Conference, INTELEC 2008 - San Diego, CA, United States
Duration: Sep 14 2008Sep 18 2008

Publication series

NameINTELEC, International Telecommunications Energy Conference (Proceedings)
ISSN (Print)0275-0473

Conference

Conference30th Annual International Telecommunications Energy Conference, INTELEC 2008
Country/TerritoryUnited States
CitySan Diego, CA
Period09/14/0809/18/08

Keywords

  • Digital control
  • Frequency characteristics
  • Inverter
  • Stability

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