International Conference Sze Sing Lee, Chee Shen Lim, Yam P. Siwakoti, Nik Rumzi Nik Idris, Ibrahim Mohd Alsofyani, and Kyo-Beum Lee, "A New Unity-Gain 5-Level Active Neutral-Point-Clamped (UG-5L-ANPC) Inverter," in Proc. CENCON Conf., Oct. 2019, pp. 213–217.
2019
본문
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 [11].
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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