Research On Hybrid Active Power Filter Optimization Design

With the continuous development of smart grid, the power quality demand is higher andhigher. A large number of power electronics devices are applied in power system which bringsserious harmonic harm to power grid, and power system harmonic problems urgently need tosolve. Using hybrid active power filter for harmonic comprehensive power compensation isan effective way to solve the problem of harmonic. It has important social significance andeconomic value. Thesis mainly studied on the use of dynamic programming and geneticalgorithm to design the fundamental wave resonance hybrid active power filter.Paper based on the analysis of a variety of hybrid active power filter main circuittopology structure, adopts the fundamental wave tuning type main circuit structure of thehybrid power filter of which the topology structure not only can compensate harmonics in thesystem, also can through the passive filter and inject a certain amount of reactive powercompensation capacitance to the system. Fundamental resonant circuit in which a lot ofharmonic current inject into passive branch when near the base wave frequency resonance,that makes active filter branch does not inherit the fundamental voltage, and the capacity ofthe inverter needs small, and reduces the difficulty of design, and improves the economy. Thefundamental wave tuning type hybrid active power filter and the principle of the filterperformance are detail analyzed, and the engineering design scheme of hybrid active filter isintroduced. Paper combined with the advantage of the dynamic programming algorithm andgenetic algorithm, and dynamic programming genetic algorithm which has strong globaloptimization ability is proposed based on the existing shortcomings of hybrid active powerfilter optimization design scheme. In this paper, fundamental wave resonance hybrid activepower filter is optimized design based on dynamic programming genetic algorithm, and theparameters of the filter parts are calculated.Using Matlab/Simulink module for the design of the fundamental wave tuning typehybrid active power filter are simulated. The results show that using dynamic programminggenetic algorithm to design the filter has a good ability of harmonic control and reactivepower compensation. The results show that the filter which designed by dynamicprogramming genetic algorithm has better efficiency comparison with other methods.