用扫频仪测量天线的输入阻抗时，在同轴传输线与天线间应按平衡—不平衡变换器。
When using frequency sweep meter to measure the input impedance of antenna, the balanced - unbalanced transformer must be connected between coaxial transmission line and antenna.
对有害电流检测方法、新型UPFC的变换器的调制方法、新型UPFC直流侧电容电压的平衡控制方法等进行了深入研究。
The detecting techniques of harmful currents, the modulation methods of novel UPFC and the balancing control of capacitors voltage on DC link are studied thoroughly.
在电力变换器中，不平衡会产生不希望的直流波动以及交流侧无特征的谐波。
In power converters, unbalances generate undesirable DC ripple and non characteristical harmonics in the AC side.
在电力变换器中，不平衡会产生不希望的直流波动以及交流侧无特征的谐波。
In power converters, unbalances generate undesirable DC ripple and non characteristical harmonics in the AC side.
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