Modular Scalable Inverter System에서 캐리어 비동기시 고주파 전압 보상을 이용한 순환전류 저감 기법Circulating Current Reduction Method Using High Frequency Voltage Compensation in Asynchronous Carriers for Modular Scalable Inverter System
- Other Titles
- Circulating Current Reduction Method Using High Frequency Voltage Compensation in Asynchronous Carriers for Modular Scalable Inverter System
- Authors
- 최승연; 강신원; 임준혁; 김래영
- Issue Date
- Apr-2019
- Publisher
- 전력전자학회
- Keywords
- Circulating current; IPMSM(Interior Permanent Magnet Synchronous Motor); MSIS(Modular Scalable Inverter System); Voltage compensation
- Citation
- 전력전자학회 논문지, v.24, no.2, pp.71 - 77
- Indexed
- KCI
- Journal Title
- 전력전자학회 논문지
- Volume
- 24
- Number
- 2
- Start Page
- 71
- End Page
- 77
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/147993
- DOI
- 10.6113/TKPE.2019.24.2.71
- ISSN
- 1229-2214
- Abstract
- This study proposes a circulating current reduction method that uses high-frequency voltage compensation when carrier phase difference occurs between two inverters in MSIS. In MSIS, inverters are configured in parallel to increase power capacity and to increase efficiency by using inverters only as needed. However, in the parallel inverter structure, circulating current is inevitably generated. Circulating current increases the stress on the switch, adversely affects the current control performance, and renders load sharing difficult. The proposed method compensates for the output voltage reference of the slave module by using the high-frequency voltage so that the switching pattern of each module is matched even in asynchronous carriers. The validity of the proposed method is verified by simulations and experiments with 600 W IPMSM.
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