Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 2004.07b
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- Pages.630-634
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- 2004
Three Phase Three-Level Switched Voltage Source PWM Inverter with Zero Neutral Point Potential
영 전위 중성점을 가진 새로운 3상 Three-Level 스위치 전압원 인버터
- Oh Won-Sik (KAIST) ;
- Han Sang-Kyoo (KAIST) ;
- Choi Seong-Wook (KAIST) ;
- Moon Gun-Woo (KAIST)
- Published : 2004.07.01
Abstract
A new three phase three-level Pulse Width Modulation (PWM) Switched Voltage Source (SVS) inverter with zero neutral point potential is proposed. The major advantage is that the peak value of the phase output voltage is twice as high as that of the conventional neutral-point-clamped (NPC) PWM inverter. Furthermore, three-level waveforms of the proposed inverter can be achieved without switch voltage unbalance problem. Since the average neutral point potential of the proposed inverter is zero, the common ground between input stage and output stage is possible. The proposed inverter is verified by experimental results based on a laboratory prototype.
Keywords