Research on suppression of harmonic current for magnetic control reactor

摘要

In this paper, equivalent mathematical model is set up for a five-stage magnetic valve reactor. Equivalent magnetization curve of cores is deduced for a five-stage magnetically controlled reactor. On the basis of multistage magnetic valve reactor equivalent circuit equations, harmonic current expression is drawn for multistage magnetic valve reactor. And harmonic current of five-stage MCR is optimized. The simulation results show that the five-stage magnetically controlled reactor has better harmonic characteristics. Harmonic current maximum amplitude of 3rd, 5th and 7th does not exceed the rated fundamental wave current amplitude of 1.46%, 0.6%, 0.25% respectively. The per-unit total harmonic content is less than 1.5%. Five-stage MCR greatly reduces the every harmonic and total harmonic content.