本文研究了利用自动平衡电桥方法，通过测量高端和低端两路矢量电压来精确测量电感L、电容C和电阻R（即LCR）。
This paper studies the method of auto balancing bridge to precisely measure inductance L, capacitance C, resistance R(namely LCR)by measuring the high and low terminal vector voltages.
文中以电感电容为输入电路，全面分析了用选频平衡法测量局部放电的原理。
The measurement principle of selective frequency balance method with input circuits of inductance and capacitance for PD detection is analyzed in detail in this paper.
并指出电压不平衡是由于NPC三电平的特殊结构和电路中的杂散电感造成的。
The proper reasons for the unbalance are the unique structure of NPC three level converters and the parasitic inductance in the circuit.
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