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논문 기본 정보

자료유형
학술대회자료
저자정보
Deshuo Yu (Xi’an Jiaotong University) Yuguo Li (Xi’an Jiaotong University) Hao Yi (Xi’an Jiaotong University) Fang Zhuo (Xi’an Jiaotong University) Zhenxiong Wang (Xi’an Jiaotong University) Yihan Xie (Xi’an Jiaotong University)
저널정보
전력전자학회 ICPE(ISPE)논문집 ICPE 2023-ECCE Asia
발행연도
2023.5
수록면
549 - 554 (6page)

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This paper presents a strategy for neutral potential (NPP) balancing in a three-level neutral point clamped (NPC) inverter by injecting the absolute value of the modulating signal. The injection involves the zero-sequence component and the 2nd harmonic component. When the power factor is large, the injected zero-sequence component maintains the balance of the neutral potential on the DC side. Besides, the injection of the 2nd harmonic component also achieves the objective of NPP balancing and the control effect is independent of the power factor. The analysis shows that when an absolute value of the modulating signal is injected, both the zero-sequence and the 2nd harmonic component lead to voltage balancing of the DC side and can be scaled adaptively to the path as the power factor changes. The NPP balancing strategy is verified by simulation from the voltage balancing effect and adaptive reduction of harmonic components.

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Abstract
I. INTRODUCTION
II. NEUTRAL POINT POTENTIAL FLUCTUATING MODEL
III. ANALYSIS OF INJECTING ABSOLUTE VALUE OF MODULATION SIGNAL
IV. SIMULATION
V. CONCLUSIONS
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