电机变频技术求助？？
it would be better to measure the starting voltage of corona discharge (partial discharge).The theory is as follows.
1) Starting voltage of corona discharge : Vc
2) Surge voltage of inverter (PWM device): Vs
If Vc > Vs, then it will be no problem. If Vs > Vc, insulation of the
motor will be damaged due to corona discharge during operation by VFD.
请问Vc是否为电晕电压？在电机运行时从何而来？如何测试？电晕电压有启动电压之说吗?有对这段话从电机角度理解的能否指点高见？ 采用变频器后，瞬间脉冲尖峰电压能引起电晕放电现象，使电机绝缘过早损坏。
所以变频器要和电机配套，变频器启动的浪涌电流要小于能引起电机匝间短路的电晕电压 本帖最后由 forlink 于 2010-1-18 15:39 编辑
回复 2# qshzhou
支持二楼的回复。
变频电源的最大问题就在高频脉冲的尖峰电压。
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