DSP控制的无桥功率因数校正器的设计与实现

2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT) Pub Date : 2018-10-01 DOI:10.1109/ACEPT.2018.8610830

Sheng-Ju Chen, T. Liang, Wei-Jing Tseng, Pin-Yi Liu

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引用次数: 0

摘要

传统的升压功率因数校正(PFC)电路在大功率应用时，整流桥二极管会造成较大的功率损耗。本文实现了一种带有数字信号处理器(DSP)控制的无桥PFC电路。平均电流模式由DSP实现，输入电流随输入电压变化。因此，PFC变换器实现了高功率因数和低总谐波失真电流。分析了半升压型PFC变换器的工作原理，设计了关键器件的参数。介绍了在DSP中实现平均电流模式控制的软件。介绍了外电压环、内电流环及补偿器的设计。最后，实现了一个1.3 kw的DSP控制的无桥PFC电路。输入电压范围90v_ {rms} ~ 264v_ {rms}$，输出电压400v恒定。最高效率为98.1%。最大功率因数为0.996，最小iTHD为5.1%。

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Design and Implementation of a DSP Controlled Bridgeless Power Factor Corrector

When conventional boost power factor corrector (PFC) circuit operates in high power application, rectifier bridge diode causes high power loss. A bridgeless PFC circuit with digital signal processor (DSP) control is implemented in this paper. Average current mode is implemented by DSP and the input current follows the input voltage. Therefore, the PFC converter achieves high power factor and low total harmonic distortion current. The operating principle of semi-boost PFC converter is analyzed and the parameters of key components are design. The software of average current mode control in DSP is described. Outer voltage loop, inner current loop and the design of the compensator are introduced. Finally, a 1.3 kw bridgeless PFC circuit with DSP control is implemented. Input voltage range is $90 V_{rms} ~ 264 V_{rms}$ and output voltage is constant 400 V. Maximum efficiency is 98.1%. Maximum power factor is 0.996 and minimum iTHD is 5.1%.

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2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)

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