Improved Divided-Frequency Decoupling Control of Hybrid Active Power Filter

To improve power quality of enterprise power network,a control method for hybrid active power filter is researched.In allusion to cross-coupling occurred during harmonic suppression by common fuzzy generalized integral control,an improved fuzzy decoupling divided-frequency control method,which effectively integrates the advantage of fuzzy control with that of divided-frequency control to verily implement fuzzy PI control of harmonics in various orders,is proposed.The correctness of the proposed control method is verified by simulation and experiments.