因而可以取代梯形算法来计算谐波系数。

So it can take place of the traditional Fourier algorithm to calculate the coefficients of harmonics.

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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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在非线性电阻消谐方式下，正温度系数(PTC)热敏电阻和三次谐波滤波器可以较好地解决零序电压偏高的问题。

Positive temperature coefficient (PTC) thermistor and triple frequency harmonic filter can reduce zero sequence voltage when a nonlinear resistance is used to prevent ferroresonance.

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