与传统的对称分量法及旋转磁场法不同，本文用等效电流法对电容运转形式的单相电机进行了性能计算，主要推导出了主、副相电流的计算公式。

Equivalent current method different from symmetrical component method and revolving field method, is used for performance calculation on capacitor single phase motors on this paper.

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通过针对输出电容的电压差值的直流分量进行补偿，解决了电压平衡问题。

The problem of voltage balance was solved by a compensation for the difference of the output voltage of capacitor.

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该方法以电网电压为同步信号，在电网电压信号的过零点采样直流侧电容电压，并通过周期离散控制可以获得负荷电流有功分量。

The new control way can realize linear control for DC-bus voltage and get the fundamental component of the load current synchronously with a little of calculation.

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