By Topic

Controlling electric traction drives for minimum energy wastage

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)
Edwards, J.B. ; University of Sheffield, Department of Control Engineering, Sheffield, UK ; Eren, H.

The inclusion of a gradient load, as a fixed but arbitrary function of distance travelled, is investigated within the design of an optimal controller for electric traction drives. A successful approach is shown to involve (a) the sub-division of a journey into N piecewise constant-gradient stages, (b) the interative solution of the state and costate system equations at each stage transition and (c) the use of general dynamic programming to optimise the overall journey with respect to the initial velocities and subsequent stage times at each transition. Step (b) is achieved utilising a sensitivity model for initial costate iteration based on analytic zero-gradient solutions. The iterative scheme is shown to be stable for all conditions other than large downhill gradients, reverse-time integration being necessary under such circumstances. The minimisation of the combined mechanical and electrical energy losses is advocated and savings from 15 to 25% are demonstrated.

Published in:

Electrical Engineers, Proceedings of the Institution of  (Volume:126 ,  Issue: 3 )