Střídavý pohon s tříúrovňovým střídačem

Abstract

This diploma thesis is focused on a design of an alternating current drive with a three-level inverter motoric drive and its practical realization.

Firstly, working principle of an inverter and multi-level inverters emphasizing a three-level inverter motoric drive is mentioned in the introduction of this thesis. Secondly, there are presented component parts of the drive with a three-level inverter motoric drive and also there are designed main and auxiliary circuits. The idea of a converter is specified here, as well as its control system with the signal processor including some kinds of modulations for driving a three-level inverter motoric drive and a direct control of an asynchronous motor and control software. There are introduced parameters of the motor, a design of its protection and a design of a connection line to the station.

Finally, a practical part of this thesis is focused on realization of the station of the drive and its control. This part is supported by technical documentation. Verifying of drive’s features was realized by the measurement.