Research On Compensating Technique Of Active Power Filter

Active Power Filter(APF) is an equipment used to dynamically clearing up harmonics and compensating reactive power,APF has a fine prospect. compared with the traditional L-C filters the active poewer filters have the merits in rapid reflect,better compensation and the ability in dynamic compensation.The basic principle of APF are analyzed in this paper.some methods of harmonic measurement are compared , d-q method on the instantaneous reactive theories are choosed to use. the merit and shortcoming of the triangular carry wave control and hysteresis-based current control are analyzed and discussed, the triangular carrier waveform control are choosed.Voltage control method of DC-side are studed.APF was simulated by matlab.The results of the simulation express the methods of harmonics measurement and control strategy choosed have better of compensate function to the harmonics and reactive power caused by the nonline load , and APF have a better dynamic compensation characteristic.Finally at the foundation of the research of the theories and imitation,Active power filter system structure is designed which using the TMS320LF2407 and PM15CZF120. The software function is analyzed , software is designed and wroten in the meantime.