Vliv nastavení měniče frekvence na vybrané veličiny asynchronního elektromotoru.

Abstract

Currently, frequency converters are increasingly being used for powering induction motors. Frequency converters allow for motor speed regulation, which is highly utilized in many industrial applications. However, powering the motor using a frequency converter can also have negative effects on the motor, some of which will be described in this thesis. The introductory chapter of this thesis deals with the construction, operation principle, and equivalent circuit of the squirrel cage rotor induction motor. The second part of the introductory chapter describes the distribution and characteristics of frequency converters, with a special focus on indirect voltage-type frequency converters. The second chapter describes the options for powering an induction motor, listing their advantages and disadvantages. The third chapter presents the measured motor and the converter used for its power supply. The measurement equipment and test plan are also shown. The practical part of this thesis is divided into the following two chapters. The first chapter depicts the measured results, while the following chapter is dedicated to their comprehensive evaluation.