Research on current hysteresis comparison control method of parallel active power filter

parallel active power filter;  Current hysteresis comparison control;  Instantaneous reactive power theory

Based on the instantaneous reactive power theoretical detection method of command current signal, a current-based SAPF hysteresis control method is analyzed to analyze the current hysteresis control method of parallel active power filter, which can select the appropriate threshold according to the engineering needs of SAPF compensation effect and the switching frequency limitation of controllable power electronic components. In order to verify the feasibility of this method, MATLAB simulation experiments are carried out. The simulation results show that the current hysteresis control method can reduce the calculation amount and calculation error, improve the reaction speed, and adjust the tracking accuracy according to needs.