A new active zero state PWM algorithm for reducing the number of switchings

Sang Won Yun, Jae Hyuk Baik, Dong Sik Kim, Ji Yoon Yoo

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

To reduce common-mode voltage (CMV), various reduced CMV pulse width modulation (RCMV-PWM) algorithms have been proposed, including active zero state PWM (AZSPWM) algorithms, remote state PWM (RSPWM) algorithms, and near state PWM (NSPWM) algorithms. Among these algorithms, AZSPWM algorithms can reduce CMV, but they increase the number of switchings compared to the conventional space vector PWM (CSVPWM). This paper presents a new AZSPWM algorithm for reductions in both the CMV and total number of switchings in BLAC motor drives. Since the proposed AZSPWM algorithm uses only active voltage vectors for motor control, it reduces CMV by 1/3 compared to CSVPWM. The proposed AZSPWM algorithm also reduces the total number of switchings compared to existing AZSPWM algorithms by eliminating the switchings required from one sector to the next. The performance of the proposed algorithm is verified by analyses, simulations, and experimental results.

Original languageEnglish
Article numberJPE 17-1-9
Pages (from-to)88-95
Number of pages8
JournalJournal of Power Electronics
Volume17
Issue number1
DOIs
Publication statusPublished - 2017

Keywords

  • Active zero state PWM (AZSPWM)
  • Common-mode current (CMC)
  • Common-mode voltage (CMV)
  • Space vector pulse width modulation (SVPWM)

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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