Three-stage multiphase-switched-capacitor boost DC-AC inverter
作者： Yuen-Haw Chang , Zih-Yao Luo
DOI: 10.1002/CTA.761
关键词:
摘要: A closed-loop scheme of a three-stage multiphase-switched-capacitor boost DC-AC inverter (MPSCI) is proposed by combining the multiphase operation and sinusoidal-pulse-width-modulation (SPWM) control for low-power step-up conversion regulation. In this MPSCI, power unit contains two parts: MPSC booster (front) H-bridge (rear). The suggested an inductor-less DC-DC conversion, where three voltage doublers in series are controlled with boosting gain up to 23 = 8 at most. employed inversion, four solid-state switches H-connection SPWM obtain sinusoidal AC output. addition, adopted enhancing output regulation not only compensate dynamic error, but also reinforce robustness source/loading variation. relevant theoretical analysis design include: MPSCI model, steady-state/dynamic analysis, ratio, efficiency, stability, capacitance selection, total harmonic distortion (THD), filter, design. Finally, simulated, hardware circuit implemented tested. All results illustrated show efficacy scheme. Copyright © 2011 John Wiley & Sons, Ltd.
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