直流拖动及变频调速对供电系统供电质量影响很大，特别存在严重谐波污染及功率因数降低现象。通过采用静止无功发生器及有源电力滤波器，有效地解决了功率因数降低及谐波污染问题，取得了良好的经济效益。%DC drive and variable frequency speed regulation has great inlfuence on the quality of the power supply system, especially the serious harmonic pollution and power factor reduction. By, it can effectively solve the problem of reducing the power factor and harmonic pollution to use the static var generator and the active power iflter, and has achieved good economic beneifts.
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