Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1998.07f
- /
- Pages.1899-1901
- /
- 1998
A study on the DC Capacitor Voltage control of 5 Level Inverter for Static Var Compensator
자려식 SVC용 5레벨 인버터의 직류측 콘덴서 전압제어에 관한 연구
- Kim, Jong-Yun (Korea Maritime University) ;
- Harada, Hedehoro (Tokyo Electric power company) ;
- Lyu, Sung-Kak (Korea Maritime University) ;
-
Oh, Jin-Suck
(Korea Maritime University)
;
-
Kim, Yoon-Sik
(Korea Maritime University)
;
- Noh, Chang-Joo (Korea Maritime University)
- Published : 1998.07.20
Abstract
A five-level VSI(Voltage Source Inverter) is introduced as a SVC(Static Var 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.
Keywords