本文分析了三相电压型PWM整流电路的工作原理，给出了整流电路的相量图和一系列公式。
In this paper the principle of a 3-phase voltage-typed PWM rectifying circuit is analyzed and both the vector diagram of rectifying circuit and a series of formula are also offered.
对上述不对称因素的作用，利用等效电路和相量图作了定性的说明。
A qualitative explanation of the action of these asymmetries is presented by using equivalent circuits and phasor diagram.
本文用信号分解和叠加的理论及方法，推导出一种适用于分析运算放大电路反馈特性的“分解方框图”，并通过实例介绍了相量图分析法。
In this paper, authors deduce a analysis scheme explaining feedback characteristic of a operation amplifier using the theory and method of signal composing and decomposing.
本文用信号分解和叠加的理论及方法，推导出一种适用于分析运算放大电路反馈特性的“分解方框图”，并通过实例介绍了相量图分析法。
In this paper, authors deduce a analysis scheme explaining feedback characteristic of a operation amplifier using the theory and method of signal composing and decomposing.
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