NEW TOPOLOGY FOR SOFT STARTING AND SPEED REGULATION OF WOUND ROTOR ASYNCHRONOUS MACHINE CONTROLLED BY MICROPROCESSOR

Abstract

A new topology for soft starting and speed regulation of wound rotor asynchronous machines is proposed. The feedback regulation is controlled by a microprocessor. A description of the microprocessor and its operation is presented. A theoretical analysis of the topology operation is carried out and verified by PSpice simulations. Experiments with 1.5 kW asynchronous machine are executed. Results of theoretical calculations, PSpice simulations and experiments are in good matching. The experimental investigations show that the proposed algorithm of soft starting is effective.