The Study, Dsp-based Active Power Filter

Active Power Filter is a new electrical device which is used to constrain dynamic harmonic and compensate reactive power. The paper mostly analyzes the theory , system structure, and compensate characteristic of active power filter. Many menthods of harmonic measurement are discussed in the paper,especially the instantaneous reactive menthod. The instantaneous reactive menthod was simulated by matlab.The harmonic measurement based on the theory of instantaneous reactive was realized by using the software of Code Composer. In the end,the paper analyses the working theory of the APF circuit, and constructs the simulating circuit using the IRFI630G MOS monolithic IC.