Algorithm for reducing additional losses in asynchronous electric drives in plants with static power regulators

Authors: Haychenko I. A., Babenko V. V., Nefedov Yu. V., Ha A. T.

Annotation: The ways to reduce losses of electrical energy in power supply systems of industrial enterprises containing powerful semiconductor converters and asynchronous motors are considered. The source of additional electric power losses related to subharmonic nature of voltage fluctuations from operation of converters using the principle of frequency-pulse control is determined. The operation algorithm for thyristor switches of semiconductor converters is proposed, that provides reduction of electric power losses in asynchronous motors connected in parallel with powerful converters. The voltage graphs and currents of simulation model in operation modes of converters show the potential to increase energy efficiency of operation of a wide range of industrial objects with asynchronous motors, connected in parallel and having cyclically changing load.

Keywords: power losses, asynchronous electric motor, semiconductor converter, control algorithm, thyristor keys, electromagnetic compatibility