该方法包括信号频率实时估计、采样频率同步跟踪和谐波系数误差校正几个要素。

The method consists of real-time estimation of signal frequency, synchronous tracking of sampling frequency and error correction of harmonic coefficients.

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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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有源功率因数校正满足EMC的谐波电流的排放限制，以及满足电压波动和闪变的限制。

Active Power Factor Correction to meet EMC limits for harmonic current emissions, and limitations of voltage fluctuations and flicker.

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