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논문 기본 정보

자료유형
학술저널
저자정보
Xi Chen (Huazhong University of Science and Technology) Shenghua Huang (Huazhong University of Science and Technology) Dong Jiang (Huazhong University of Science and Technology) Bingzhang Li (Huazhong University of Science and Technology)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.13 No.5
발행연도
2018.9
수록면
1,986 - 1,995 (10page)

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초록· 키워드

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In this paper, a novel neutral-point voltage balancing scheme for NPC three-level inverters using carrier-based sinusoidal pulse width modulation (SPWM) method is developed. The new modulation approach, based on the obtained expressions of zero sequence voltage in all six sectors, can significantly suppress the low-frequency voltage oscillation in the neutral point at high modulation index and achieve a fast voltage-balancing dynamic performance. The implementation of the proposed method is very simple. Another attractive feature is that the scheme can stably control any voltage difference between the two dc-link capacitors within a certain range without using any extra hardware. Furthermore, the presented scheme is also applicable to the single-phase NPC threelevel inverter. It can maintain the neutral-point voltage balance at full modulation index and improve the voltage-balancing dynamic performance of the single-phase NPC three-level inverter. The performance of the proposed strategy and its benefits over other previous techniques are verified experimentally.

목차

Abstract
1. Introduction
2. Review of Three-Phase NPC Three-Level Inverters
3. Novel Zero Sequence Voltage Injection Method for Neutral-Point Voltage-Balancing Control
4. Experimental Results
5. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2018-560-003325468