Implementation of direct torque control of AC drive with synchronized notched DC link voltage

Author

Azab, Mohamed ; Orille, A.L.

Author_Institution

Banha High Inst. of Technol., Kalubia, Egypt

Volume

2

fYear

2001

fDate

2001

Firstpage

1280

Abstract

In this paper a quasi-parallel resonant inverter is used to implement the DTC strategy of induction motor drive to obtain a high performance AC drive. This scheme combines the advantages of quasi-parallel resonant inverter (operation at high switching frequency, high efficiency, and reduced EMI) and those of the DTC (good dynamic performance and fast response of torque and flux). The DC link voltage is pulled down to zero when any inverter switch has to change its switching state. Thus, the DTC algorithm can be implemented with zero hysteresis band of both torque and flux controllers to enhance the DTC performance. Simulation and experimental verification are presented. Good trace of motor torque and flux are obtained

Keywords

induction motor drives; invertors; machine control; magnetic flux; magnetic variables control; resonant power convertors; switching circuits; torque control; 2 kVA; IGBT Inverter; direct torque control; fast flux response; fast torque response; flux controllers; good dynamic performance; high efficiency; high performance AC drive; high switching frequency; induction motor drive; inverter switch; quasi-parallel resonant inverter; reduced EMI; synchronized notched DC link voltage; torque controllers; zero hysteresis band; Circuit topology; Hysteresis motors; Pulse width modulation inverters; RLC circuits; Resonant inverters; Switches; Switching frequency; Switching loss; Torque control; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 2001. IECON '01. The 27th Annual Conference of the IEEE

Conference_Location

Denver, CO

Print_ISBN

0-7803-7108-9

Type

conf

DOI

10.1109/IECON.2001.975966

Filename

975966