三相四线制APF谐波检测和控制策略的研究

Study of the Harmonic Detection and the Control Strategy for the APF of Three-phase Four-line

提出了针对三相四线制的零序电流分离法和自适应谐波检测法两种检测方法,并对其进行了实验室对比仿真;同时提出了脉宽调制(PWM)滞环控制和重复学习Boost控制方法对三线四线制系统的谐波进行补偿控制,并在实际工程运用中对这两种方法进行验证。

Based on the neutral current of three-phase four-line electronic system, two detection methods of the zero- sequence current and the learning Boost mode are proposed which have been demonstrated in the lab.Pulse width modulation（PWM） hysteresis comparing mode and the learning Boost converter control are proposed,which can be used to compensated current harmonic of three-phase four-line power grid system, and are tested in practical project.