由于电网中非线性设备的使用日益增多，所产生的高次谐波电流大量注入电力线路中，使得电网电压、电流波形发生畸变。
Since more and more nonlinear equipments have been used in the power supply network, the generated high harmonics current leads to waveform distortion of voltage and current in the supply network.
采用串联电压谐振产生高压起辉，必须采取过流保护措施。 电子镇流器高次谐波的产生及其所带来的危害。
We also should take protective measures for the volt power bright spots that produced by the series voltage resonance and the higher harmonic produced by the Electronic Ballast.
本文提出的角度PWM方法着眼于电机的定子电压空间矢量，使其矢量角均匀变化，减小电压波形中的高次谐波分量。
The presented phase Angle PWM method is centering attention on motor stator voltage space vector and controls the vector Angle to vary linearly and so reduces higher harmonics in voltage wave.
KIWA综合节电装置以其独特结构形式，通过调整三相电流和电压的平衡，消除电网高次谐波。
KIWA synthetic power saver with his unique structure form eliminates higher harmonic of the electrical network by way of the balance in adjusting three-phase current and voltage.
对空载、带载情况下变频器产生的不平衡电压和高次谐波的含量进行了测试与分析。
Reference to research status of MDT and by analyzing the special working environment of the ESP, the multi-signal are carried with motor power line.
对空载、带载情况下变频器产生的不平衡电压和高次谐波的含量进行了测试与分析。
Reference to research status of MDT and by analyzing the special working environment of the ESP, the multi-signal are carried with motor power line.
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