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전동기 구동용 3-레벨 인버터의 신뢰성을 위한 중성점 전압 제어
- Alternative Title
- Lee Hyun-Hee
- Author(s)
- 이현희
- Alternative Author(s)
- Lee Hyun-Hee
- Advisor
- 이교범
- Department
- 일반대학원 전자공학과
- Publisher
- The Graduate School, Ajou University
- Publication Year
- 2013-02
- Language
- kor
- Keyword
- 3-레벨 인버터; 불연속 전압 변조 방식; 전동구동용 시스템
- Alternative Abstract
- This paper proposes a method for neutral-point voltage balancing control for a three-level inverter that uses discontinuous pulse width modulation (DPWM). The reliability of a three-level inverter system is influenced by the neutral-point voltage balance. Generally, the offset voltage is added to reference voltages in the conventional voltage balancing control method. However, when using DPWM, only limited balance of the neutral-point voltage is possible because turn-on and turn-off switching occur at regular intervals. The proposed method is implemented by adjusting the discontinuous pulse width of positive and negative cycle. The method maintains low switching loss and effective voltage balance, without the need for complex calculations. Simulation and experimental results confirm the feasibility and effectiveness of the proposed method.
- Fulltext
- Appears in Collections:
- Graduate School of Ajou University > Department of Electronic Engineering > 3. Theses(Master)
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