Two methods to calculate the zero sequence current are deduced based on the symmetrical component method.
根据对称分量法，推导了两种软件计算零序电流的方法。
And, the equivalent current algorithm for the electric motor heat accumulation is proposed based on the symmetrical component method.
同时根据对称分量法的基本原理，提出以等效电流作为电动机热积累计算的依据的算法。
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.
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。
Based on symmetrical component method and linear superposition principle, the additional positive sequence network after fault is established and the matching index on fault point is defined.
该方法首先运用对称分量法和线性叠加原理建立故障后的附加正序网络并且定义了故障点的匹配指标，进而基于该指标运用遍历搜索方法寻找故障点位置。
Based on symmetrical component method and linear superposition principle, the additional positive sequence network after fault is established and the matching index on fault point is defined.
该方法首先运用对称分量法和线性叠加原理建立故障后的附加正序网络并且定义了故障点的匹配指标，进而基于该指标运用遍历搜索方法寻找故障点位置。
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