AC drives in metal industries

Author

Bhooplapur, P.

Author_Institution

Metals Ind. Dept., Siemens Adv. Eng. Pte Ltd., Singapore

Volume

2

fYear

1997

fDate

26-29 May 1997

Firstpage

823

Abstract

Today all variable speed drives (VSDs) in the metallurgical industry are AC drives. These range from simple Volts/Hertz (V/Hz) to vector controlled drives. Insulated gate bipolar transistor pulse-width modulated (IGBT PWM) inverters offer power ratings up to a few megawatts. Cycloconverters, multi-level gate turn-off (ML-GTO) inverters, and load commutated inverters (LCI) cover the upper range. Up to about 1000 kW (<10 kNm) is the domain of squirrel cage induction motors. Synchronous motors dominate the high power range. AC drives have not just achieved but also excelled the performance and power ratings which were once exclusive to DC drives. Apart from the intrinsic benefits of lower maintenance and size, AC drives offer energy efficient and clean power operation

Keywords

AC motor drives; DC-AC power convertors; PWM invertors; bipolar transistor switches; commutation; cycloconvertors; insulated gate bipolar transistors; metallurgical industries; power bipolar transistors; power semiconductor switches; switching circuits; thyristor convertors; variable speed drives; IGBT PWM inverters; cycloconverters; load commutated inverters; metal industries; multi-level gate turn-off inverters; performance; power ratings; variable speed AC motor drives; AC motors; Commutation; Induction motors; Insulated gate bipolar transistors; Insulation; Machine vector control; Metals industry; Milling machines; Pulse width modulation inverters; Synchronous motors;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 1997. Proceedings., 1997 International Conference on

Print_ISBN

0-7803-3773-5

Type

conf

DOI

10.1109/PEDS.1997.627497

Filename

627497