Title :
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
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;
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
DOI :
10.1109/IECON.1992.254591
