典型对称谐波源时域变换分析方法研究

Study on Time Domain Transforms Analysis of Typical Symmetric Harmonic Source

为了降低三相全桥整流电路和三相交流调压电路等典型对称谐波源的谐波分析复杂度,提出了基于时域变换的谐波分析方法。和傅立叶分析法相比,计算量大幅减少。对现场实测数据的验算结果表明,所提方法对总谐波畸变率的计算精度较高,对各次谐波含有率的计算误差在4%以内。

In order to simplify the harmonic analytics of typical symmetric harmonic source, such as three-phase full-bridge rectification circuit and three-phase AC regulating circuit, a novel harmonic analytic method is presented based on time domain transforms. In comparison with Fourier analytics method the computational complexity has been evidently simplified. The checking results of field data shows that the calculation accuracy of THD is relatively higher and the calculation error of harmonic ratio is not more than 4%.