Abstract：Sequential switch series shunt regulator(S4R) is used as space photovoltaic(PV) 20kW power conditioning unit(PCU). In order to improve high power density, a reasonable solution is reducing the filter healing capacitor array size and weight. Sigma-delta control strategy is proposed to gate the shunt switch by overclocking at the same efficiency with the hysteretic control. Modeling, loop design and system stable of sigma-delta control is analyzed in this paper. A better dynamic performance and power density ratio than the Bang-Bang control is proved by simulation and experiment.
苗狄, 张东来, 张乃通. 基于ΔΣ超频的高功率密度空间功率平台[J]. 电工技术学报, 2013, 28(8): 233-240.
Miao Di, Zhang Donglai, Zhang Naitong. Research on Space Power Conditioning Unit with High Power Density Based on ΔΣ Overclocking Characteristics. Transactions of China Electrotechnical Society, 2013, 28(8): 233-240.
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