通过实验结果表明，单级功率因数校正装置可以实现较高的功率因数、较低的总谐波畸变，而且输出电压纹波小。

Experiment results showed that the correction device of power factor could realize high power factor, low harmonic distortion and low ripple of output voltage.

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在整周期采样的FFT算法的基础上，提出了确定基波周期的总谐波畸变(THD)最小的方法，并作了误差分析。

Based on the integer period sample FFT algorithm, a lowest total harmonic distortion (THD) method for determining the base period is proposed in this paper, and the derivation is theoretically given.

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实验结果表明，应用该电路拓扑的实验装置，其功率因数较高，输入电流的总谐波畸变较低，输出电压纹波小，而且整个装置的效率也比较高。

Experiment result showed, the topology can make the device get to high Power Factor (PF), low Total Harmonic Distortion (THD) of input current, low ripple of output voltage, and high efficiency.

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