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基于开关电容网络并联的单开关升压变换器

, PP. 242-248

Keywords: 单开关,升压能力,电压应力,纹波

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Abstract:

在新能源并网发电系统中,传统Boost变换器存在升压能力有限、纹波大、效率低等问题,为此,本文提出了一种基于开关电容网络并联的单开关升压变换器。详细分析了该变换器在CCM模式下的工作原理和工作性能,并搭建了实验模型,实验结果表明①在不增加开关器件电压应力的情况下,随着并联的开关电容开关电容网络个数的增加,变换器的升压能力逐渐增强;②输入电流和输出电压纹波小;③变换器中只有一个开关管,控制电路简单;④输入电源的位置具有随意性。

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