适当增大逆变器输出滤波电感，合理选择串联变压器原副方变比，或采用电压前馈控制技术为改善其滤波效果的三条有效措施。

Then, the filtering characteristic of the active power filter is analyzed. Three measures which can improve the filtering effect are gained: augmenting the filtering inductance properly;

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适当增大逆变器输出滤波电感，合理选择串联变压器原副方变比，或采用电压前馈控制技术为改善其滤波效果的三条有效措施。

Then, the filtering characteristic of the active power filter is analyzed. Three measures which can improve the filtering effect are gained: augmenting the filtering inductance properly;

youdao