A New Unity-Gain 5-Level Active Neutral-Point-Clamped (UG-5L-ANPC) Inverter
- Publication Type:
- Conference Proceeding
- CENCON 2019 - 2019 IEEE Conference on Energy Conversion, 2020, 2019-January, pp. 213-217
- Issue Date:
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© 2019 IEEE. The active neutral-point-clamped (ANPC) inverter is a popular multilevel inverter for various industry applications. In a recent attempt, an improved topology that integrates a flying capacitor to enhance the voltage gain from half to unity has been presented . Retaining the benefit of unity-gain, this paper proposes a new ANPC topology with two improvements. Firstly, the voltage stress of the flying capacitor is reduced by half. Secondly, the charging of the flying capacitor at 0 level is made possible to achieve uniform charging over the power cycle. Comprehensive analysis is presented and experimental results of a prototype are presented for validation. Finally, the extension of the topology with increased number of output voltage levels generation is briefly discussed.
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