具有高输入功率因数的三态升压PFC转换器

Proceedings of The 7th International Power Electronics and Motion Control Conference Pub Date : 2012-08-06 DOI:10.1109/IPEMC.2012.6259078

Fei Zhang, Jianping Xu, Ping Yang, Tiesheng Yan

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引用次数: 4

摘要

三态升压PFC变换器工作在伪连续导通模式(PCCM)下的动态响应明显快于常规连续导通模式(CCM)和非连续导通模式(DCM)。然而，对于通用输入应用，均方根(RMS)输入电压在90 ~ 265VAC范围内，当使用正弦参考电流策略时，三态升压PFC转换器的输入功率因数(PF)相对较低。为了提高三态升压型PFC变换器在整个输入电压范围内的PF，推导了三态升压型PFC变换器的输入电流和PF表达式。为此，提出了非正弦基准电流控制策略，使整个输入电压范围内的PF接近一致。最后给出了三态PCCM升压PFC变换器的分析和仿真结果，验证了该方法的有效性。

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Tri-state boost PFC converter with high input power factor

Dynamic response of the tri-state boost PFC converter operating in pseudo-continuous-conduction mode (PCCM) is significantly faster than the conventional continuous-conduction mode (CCM) and discontinuous-conduction mode (DCM) boost PFC converter. However, for universal input applications, with the root-mean-square (RMS) input line voltage in the range of 90∼265VAC, the input power factor (PF) of the tri-state boost PFC converter is relatively low when the sinusoidal reference current strategy is used. To improve the PF of the tri-state boost PFC converter over the whole input voltage range, the input current and PF expressions of the tri-state boost PFC converter are derived. Therefore, non-sinusoidal reference current control strategy is proposed to improve the PF to nearly unity in the whole input voltage range. Analytical and simulation results of the tri-state PCCM boost PFC converter are presented to verify the effectiveness of the proposed method.

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Proceedings of The 7th International Power Electronics and Motion Control Conference

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