한국정보통신학회논문지 (Journal of the Korea Institute of Information and Communication Engineering)
- 제3권1호
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- Pages.223-228
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- 1999
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- 2234-4772(pISSN)
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- 2288-4165(eISSN)
자려식 SVC용 5레벨 인버터의 직류측 콘덴서 전압제어에 관한 연구
A study on the DC Capacitor Voltage control of 5 Level Inverter for Static Var Compensator
초록
A five-level VSI(Voltage Source Inverter) is introduced as a SVC(Static Vu Compensator) like a large scale power source. The problems in using SVC are that the power device can easily be destroyed by voltage unbalance and accurate reactive power control is difficult because of voltage variation. A asymmetrical PAM(Pulse Amplitude Modulation) switching pattern is proposed to solve this problem and analyze both fundamental component and harmonic current in the system. Through experimental results of 3.5 kVA experimental test system, It is confirmed that DC capacitor voltage can be controlled by asymmetrical PAM switching pattern control.
키워드