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논문 기본 정보

자료유형
학술저널
저자정보
Weidong Jiang (Hefei University of technology) Yan Gao (Hefei University of technology) Jinping Wang (Hefei University of technology) Lei Wang (Hefei University of technology)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.12 No.2
발행연도
2017.3
수록면
738 - 750 (13page)

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초록· 키워드

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In this paper, carrier-based pulse width modulation (CBPWM), space vector PWM (SVPWM) and reduced switching losses PWM (RSLPWM) for the three-level neutral point clamped (NPC) inverter are introduced. In the case of the neutral point (NP) potential (NPP) offset, an asymmetric disposition PWM (ASPDPWM) strategy is proposed, which can output PWM sequences correctly and suppress the lower order harmonics of the inverter effectively. An NPP balance strategy based on carrier based PWM (CBPWM) is analyzed. A hybrid modulation strategy combining RSLPWM and the NPP balance based on CBPWM is proposed, and hysteresis control is adopted to switch between the two modulation strategies. An experimental prototype of the three-level NPC inverter is built. The effectiveness of the hybrid modulation is verified with a resistance-inductance load and a permanent magnetic synchronous motor (PMSM) load, respectively. The experimental results show that reduced switching losses and an acceptable NPP can be effectively achieved in the hybrid modulation strategy.

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Abstract
1. Introduction
2. Structure and Operation of the Three-Level Inverter
3. Modulation Strategies for the Three-level Inverter
4. CBPWM with the Injection of CMV
5. Modulation Strategy under the Unbalanced NPP
6. The Principle of the NPP Balance
7. Hybrid Strategy with the Reduced Switching Losses and the NPP Balance Based on CBPWM
8. Experimental Verification
9. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2017-560-002172656