Two different modulation methods are used to modulate the inverter and their advantages and disadvantages are compared, including total harmonic distortion (THD) of voltage and current.

然后使用不同的调制方法对逆变器进行调制，并比较两种方法的优缺点，包括输出电压以及电流的总的谐波失真比率。

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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。

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As one of inverters, Sinusoidal Pulse Width Modulation (SPWM) inverters can achieve low total harmonic distortion (THD) output wave.

正弦脉宽调制(SPWM)逆变器作为逆变器的一种，可输出谐波含量小的正弦波形。

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