The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Carrier Based LFCPWM for Leakage Current Reduction and NP Current Control in 3-Phase 3-Level Converter

3상 3-레벨 컨버터의 누설전류 저감과 NP 전류 제어를 위한 캐리어 기반 LFCPWM

  • Lee, Eun-Chul (Research and Development Department, EKOS Co., Ltd.) ;
  • Choi, Nam-Sup (Division of Electrical, Electronic Communication and Computer Eng., Chonnam National University)
  • Received : 2022.08.08
  • Accepted : 2022.08.10
  • Published : 2022.10.20
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Abstract

This study proposes a carrier-based pulse width modulation (PWM) method for leakage current reduction and neutral point (NP) current control in a three-phase three-level converter, which is a carrier-based PWM version of the previously proposed low-frequency common mode voltage PWM. Three groups of space vectors with the same common mode voltage are used. When the averaged NP current needs to be positive or negative, the specific groups are employed to produce low-frequency common mode voltages. The validity of the proposed PWM method is verified through experiments.

Keywords

Acknowledgement

이 논문은 전남대학교 학술연구비(과제번호: 2020-3854) 지원에 의하여 연구되었음

References

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