Electric Network Related Problems of the Application of Regulated Elevator Drives Operated with Frequency Conversion

Abstract

In our days application of the so-called voltage-controlled drives is driven into the background in the field of elevator controls and in some cases the variable frequency drive is unduly preferred. The latter one is significantly more sensitive to the disturbances on the mains and at the same time emits disturbances into the mains as well. For perfect operation low frequency conducted and radiated disturbances have to be decreased by filter units of optimum design and the traditional aspects of elevator drive installations and operations have to be revaluated.