Title :
Electric wheelchair propulsion by induction motors
Author :
Chew, HoongWei V. ; Inigo, Rafael M.
Author_Institution :
Dept. of Electr. Eng., Virginia Univ., Charlottesville, VA, USA
Abstract :
This paper presents the design and implementation of a practical variable frequency induction motor propulsion system for electric wheelchairs. The power source is a 24 volt battery which is converted to three phase variable frequency voltage by means of a microcomputer controlled inverter. The frequency can be varied between 10 and 80 Hz, adequate for the speeds required in this type of system. The system was first tested in an open loop configuration. Then, a closed loop system was implemented in which the output and reference speed were compared for different load situations, and the error in speed was minimized by adjusting the frequency
Keywords :
PWM invertors; electric propulsion; electric vehicles; handicapped aids; induction motor drives; microcomputer applications; power engineering computing; 10 to 80 Hz; 24 V; PWM inverter; battery power source; closed loop system; electric wheelchair propulsion; induction motors; microcomputer controlled inverter; open loop; three phase variable frequency voltage; variable frequency; Batteries; Electric variables control; Frequency conversion; Induction motors; Inverters; Microcomputers; Open loop systems; Propulsion; Voltage control; Wheelchairs;
Conference_Titel :
Southeastcon '96. Bringing Together Education, Science and Technology., Proceedings of the IEEE
Conference_Location :
Tampa, FL
Print_ISBN :
0-7803-3088-9
DOI :
10.1109/SECON.1996.510022
