GAPF自适应滞环控制策略研究

Research on GAPF Adaptive Hysteresis Control Strategy

在此介绍了一种应用于三相六桥臂双主电路拓扑结构的自适应滞环电流控制策略。使用广义谐波分频检测算法可从电路中检测出低频广义谐波分量和高频广义谐波分量,采用自适应滞环控制策略对低频谐波信号采用两态滞环控制,高频谐波信号采用三态滞环控制。最后,搭建并联型广义有源电力滤波器(GAPF)的整体仿真模型,使用Simulink仿真,仿真数据可证明对系统采用自适应滞环控制策略后,系统侧三相广义谐波含量明显减少,从而可知控制策略对广义谐波电流抑制有效。

An adaptive hysteresis current control strategy applied to three-phase six-leg dual main circuit topology is introduced.The low frequency generalized harmonic component and high frequency generalized harmonic component can be detected from the circuit by using the generalized harmonic frequency division detection algorithm.The adaptive hysteresis control strategy is used to control the low frequency harmonic signal with two-state hysteresis control and the high frequency harmonic signal with three-state hysteresis control.Finally,overall simulation model of parallel generalized active power filter(GAPF)is built to make the system work.Simulink simulation results show that the threephase generalized harmonic content of the system side decreases significantly after the adaptive hysteresis control strategy is adopted,which shows that the control strategy is effective in suppressing the generalized harmonic current.