By Topic

A flexible micro-controller based chopper driving a permanent magnet DC motor

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Nicolai, J. ; Central Applications Lab., SGS-THOMSON Microelectron., Rousset, France ; Castagnet, T.

Microcontrollers are used more and more in motor drives, most commonly to turn on and off the motor, or to control the conduction angle of a triac, associated with a universal motor. In this paper, the universal motor is replaced by a permanent magnet DC motor, which offers the advantage of yielding a high power in a small volume. The variable speed drive is supplied from the rectified mains voltage, and consists of a chopper driven by a PWM signal generated by the microcontroller. The microcontroller measures the DC power supply voltage and adjusts the PWM duty cycle accordingly, which has the primary effect of regulating the motor voltage against mains and load variations, which in turn adjusts the motor speed, and the secondary effect of reducing the motor current ripple, thus improving motor efficiency and copper losses. This drive also implements a software power limitation, which avoids motor overheating in case of excessive loading and costs only a few discrete components. Software flexibility allows to easily modify drive parameters such as maximum power, time constants, etc. The drive principle and practical results are given

Published in:

Power Electronics and Applications, 1993., Fifth European Conference on

Date of Conference:

13-16 Sep 1993