A new drive system for battery operated wheelchairs using 3-phase cage rotor induction machines

Author

Barnard, J.M. ; van Wyk, J.D. ; Dunford, W.G.

Author_Institution

Energy Lab., Rand Afrikaans Univ., Johannesburg, South Africa

fYear

1992

fDate

9-13 Nov 1992

Firstpage

138

Abstract

Because of cost considerations, a novel approach to a battery-fed wheelchair drive system is introduced. The drive employs two inexpensive 200-W three-phase cage rotor induction machines with a maximum speed of 6000 rpm. The machines are fed by two low-loss, state-of-the-art three-phase pulse-width-modulation (PWM) FET-based inverters. A simple control and differential algorithm and PWM-generation is implemented in a single INTEL 80196 microprocessor. An experimental setup for dynamic drive evaluation, comprising an accurately controllable load, is also reported, and the characteristics of the drive are illustrated experimentally

Keywords

electric drives; handicapped aids; invertors; machine control; pulse width modulation; squirrel cage motors; 200 W; 3-phase cage rotor induction machines; INTEL 80196 microprocessor; PWM FET-based invertors; battery operated wheelchairs; control algorithm; differential algorithm; drive system; dynamic drive evaluation; pulse-width-modulation; Batteries; Costs; Frequency; Induction machines; Pulse width modulation; Pulse width modulation inverters; Switches; Voltage; Wheelchairs; Wheels;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control, Instrumentation, and Automation, 1992. Power Electronics and Motion Control., Proceedings of the 1992 International Conference on

Conference_Location

San Diego, CA

Print_ISBN

0-7803-0582-5

Type

conf

DOI

10.1109/IECON.1992.254591

Filename

254591