A method and device for measuring electrical variables, in particular of the current, at a frequency converter controlled electric motor

摘要

the strommessung is a frequenzumformergesteuerten asynchronous motor, within the leistungsteils of frequenzumformers, within one (umrichterzweiges of wechselrichters this frequenzumformers. it is then the instantaneous motor current is determined.the information, when the relevant branch stromfu00fchrend, the control circuit of the frequenzumrichters removed.