The voltagevectordiagram is a very useful method that can make a qualitative analysis of the steady values of power system in normal and fault conditions.
定性地分析电力系统正常运行状态和故障后的稳态量时,电压相量图法是十分有用的工具。
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In this paper the principle of a 3-phase voltage-typed PWM rectifying circuit is analyzed and both the vectordiagram of rectifying circuit and a series of formula are also offered.