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.
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。
A precept of distortion control which USES harmonic notch feedback method is discussed in this paper. The control process is analyzed, and the feed-back arithmetic is given.
本文提出了利用谐波陷波法反馈方式进行失真度控制的一种方案，分析了控制过程，并给出了反馈算法。
In order to reduce total harmonic distortion factor of the inverter's output voltage, adding LC filter to inverter's output is a simple and practical method adopted extensively currently.
为了降低逆变器输出电压的谐波，简单且实用的方法是在逆变器的交流输出侧加装l C滤波器。
A new method for measuring the total harmonic distortion of ultra low frequency signa1 by means of FFT algorithm is presented and the measuring error is analysed in this paper.
本文提出了采用FFT算法来测量超低频失真度的方法，解决了超低频失真度的测量问题。
A new method for measuring the total harmonic distortion of ultra low frequency signa1 by means of FFT algorithm is presented and the measuring error is analysed in this paper.
本文提出了采用FFT算法来测量超低频失真度的方法，解决了超低频失真度的测量问题。
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