By Topic

Field-weakening regime for brushless DC motors based on instantaneous power theory

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

3 Author(s)
Miti, G.K. ; Electr. Eng. Div., Cardiff Univ., UK ; Renfrew, A.C. ; Chalmers, B.J.

Permanent magnet excitation is beneficial in AC machines in which the flux is required to remain substantially constant. However in inverter-fed drives, where it is necessary to reduce the flux in order to operate above base speed with limited supply voltage, constant rotor excitation becomes a serious drawback. The conventional method used to achieve flux-weakening in permanent magnet motors involves phase advancing the stator currents with respect to the back EMF. The paper reviews the instantaneous power theory and investigates the use of the imaginary power component as an alternative means of providing field weakening in brushless DC motors. Apart from better performance at base speed, this regime is also shown to provide a wider speed range than the conventional method, without any significant current distortion

Published in:

Electric Power Applications, IEE Proceedings -  (Volume:148 ,  Issue: 3 )