Under steady state, the four-quadrant working principle of PWM rectifier has been explained here, the key for which has been found to be ac-side current control.

在稳态条件下，分析了电压型PWM整流器四象限运行工作原理，得出关键在于网侧电流控制的结论。

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This dissertation is working for developing software using for steady-state voltage stability of power system and introduces its methods, structure, function and application to SiChuan power system.

本论文致力于一种适用于大型电力系统的电压静态稳定分析软件的研制，并介绍了其采用的算法、结构和功能，以及实际应用情况。

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When Ellis talked to him about working together in his business in the 1990s, Solomon had a steady job in a state-owned pharmaceutical company.

FORBES: Boom At Hand, TCP's Ellis Yan Faces New "Green" Bulb Battle