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논문 기본 정보

자료유형
학술저널
저자정보
Gangui Yan (Northeast Electric Power University) Shuangming Duan (Northeast Electric Power University) Shujian Zhao (Northeast Electric Power University) Gen Li (Cardiff University) Wei Wu (Northeast Electric Power University) Hongbo Li (Northeast Electric Power University)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.12 No.6
발행연도
2017.11
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2,227 - 2,236 (10page)

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초록· 키워드

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In order to solve the neutral-point voltage fluctuation problem of three-phase three-level T-type inverters (TPTLTIs), the unbalance characteristics of capacitor voltages under different switching states and the mechanism of neutral-point voltage fluctuation are revealed. Based on the mathematical model of a TPTLTI, a feed-forward voltage balancing control strategy of DC-link capacitor voltages error is proposed. The strategy generates a DC bias voltage using a capacitor voltage loop with a proportional integral (PI) controller. The proposed strategy can suppress the neutral-point voltage fluctuation effectively and improve the quality of output currents. The correctness of the theoretical analysis is verified through simulations. An experimental prototype of a TPTLTI based on Digital Signal Processor (DSP) is built. The feasibility and effectiveness of the proposed strategy is verified through experiment. The results from simulations and experiment match very well.

목차

Abstract
1. Introduction
2. Mathematical Model and Modulation Principle of TPTLTIs
3. E Analysis of Neutral-point Voltage Fluctuations of TPTLTIs
4. Feed-forward Voltage Balancing Control Strategy of DC-link Capacitor Voltages Error
5. Simulation and Experimental Results
6. Conclusions
References

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