Reliability Improvement of H-Bridge Multi-level Inverter for Medium-Voltage and High-Power Induction Motor Drives Young-Min Park, Kwang-Hwan Lee, and Se-Hyun Lee

Power Electronics Building Blocks PEBB  Power Cell

Reliability Improvement of H-Bridge Multi-level Inverter for Medium-Voltage and High-Power Induction Motor Drives Young-Min Park, Kwang-Hwan Lee, and Se-Hyun Lee Abstract - This paper proposes the reliability improvement of H-Bridge Multi-level (HBM) inverter. This reliability can be implemented through modularization of power circuit, distribution of controller, duplication of controller and communication, and continuous operation method in case of power cell failure for driving medium-voltage & high-power induction motor. It is shown that the modularization and expansion characteristics of the HBM inverter are improved since the individual inverter modules operate more independently when using the proposed concept. Also the fault tolerance is increased by using power cell bypass. The proposed design and control methods are described in detail and the validity of the proposed system is verified experimentally in various industrial fields.
Paper number: TKPE-2014-19-2-1 Print ISSN: 1229-2214 Online ISSN: 2288-6281 ✝ Corresponding author: pym@hhi.co.kr, Power Conversion Research Department, Hyundai Heavy Industries Co., LTD. Tel: +82-31-289-5135 Fax: +82-31-289-5150 1 Power Conversion Research Department, Hyundai Heavy Industries Co., LTD. 2 Power Conversion Research Department, Hyundai Heavy Industries Co., LTD. Manuscript received Sep. 23, 2013; accepted Nov. 25, 2013 ─ 본 논문은 2013년 전력전자학술대회 우수추천논문임
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