Research and Analysis of Parallel Hybrid Active Filter

Along with the power electronic technology is widely used in the production and life,harmonic pollution problem of the electric power system is getting worse.A passive filter is low cost,but not good governance harmonic,active filter filtering effect is better,but the cost is too high,go against the promotion,will be active filter and passive filter and a parallel hybrid active filter can overcome used alone without source and active filter faults.Based on this,this paper analyzes the parallel hybrid active filter topology,equivalent circuit and control method,the experimental results verify the parallel hybrid active filter superiority.