symmetrical phase control

The Annexed Line Losses Caused by the Asymmetry of Three-phase Current and its Loss-reduction Methods; Research on output symmetrical control strategies for combinatorial high power three phase inverter

三相电流不对称引起的附加线损与降损措施组合式大功率三相逆变电源输出对称性研究

In this paper, according to the equation of voltage vector of single-phase motor operating at symmetrical condition, author presents a new voltage-vector PWM method of variable frequency control for single-phase motor. In system, the voltage vector is used as a control parameter.

本文根据单相电动机对称运行时的合成电压矢量方程，提出了以合成电压矢量为控制量的单相电动机电压矢量式PWM变频调速控制方法，并进行了计算机仿真及制作了单相变频器。

This paper mentions several ways of dealing with harmonic by computer program and the new method of harmonic control, At last part I will analysis the harmonic in symmetrical three-phase circuit and its effect on the measurement of Active Power.

文章也介绍了逆变电源谐波分析的几种方法，并提出了消谐控制的新思想，同时说明了谐波分析的另外几种编程计算方法。