The system structure of this algorithm is simple . It not only fits for single-phasecircuit, but also for three-phasecircuit.
该方法系统结构简单，不仅适用于单相电路，而且也适用于三相四线电路。
2
Viewed in this light, it will be found that the analysis of three-phasecircuit is little more difficult than that of single-phase circuits.
鉴于此，三相电路的研究分析并不比单相单路研究难多少。
3
Research on the zero-current-breaking control (ZCBC) for intelligent ac contactor and realize the micro-arc-energy breaking control in three-phasecircuit.