대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2011년도 제42회 하계학술대회
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- Pages.1212-1213
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- 2011
단위역률 정류기의 병렬운전
Parallel operation of rectifier with unit-power factor
- Lee, Seung-Heui (RIST) ;
- Kim, Tae-Won (RIST) ;
- Park, Jae-Wook (Cratto)
- 발행 : 2011.07.20
초록
PWM(pulse width modulation) rectifier has unit power factor and low harmonic distortion with high power conversion efficiency in entire loading range. These merits of PWM rectifier help the spread of DC distribution system. In addition, if multiple PWM rectifiers can be operated in parallel connection, maintenance process can be simple and reliability of power source can be advanced because of the hot swapping is available. The other way, the load unbalance among rectifiers can force a converter to stop by over current. The surge current by closed circuit composition between rectifiers can force switching devices damage. In this paper, some problems that can occur in case of parallel operation of PWM rectifiers and problem eliminating methods are considered.
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