0
Research Papers

Efficient State Reference Generation for Torque Control in Externally Excited Synchronous Machines

[+] Author and Article Information
Sabin-Constantin Carpiuc

Department of Automatic Control
and Applied Informatics,
“Gheorghe Asachi” Technical University of Iasi,
Iasi 700050, Romania
e-mail: scarpiuc@ac.tuiasi.ro

Mircea Lazar

Department of Electrical Engineering,
Eindhoven University of Technology,
Eindhoven 5600MB, The Netherlands
e-mail: m.lazar@tue.nl

Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received August 29, 2013; final manuscript received November 19, 2014; published online January 27, 2015. Assoc. Editor: Luis Alvarez.

J. Dyn. Sys., Meas., Control 137(5), 051015 (May 01, 2015) (7 pages) Paper No: DS-13-1332; doi: 10.1115/1.4029243 History: Received August 29, 2013; Revised November 19, 2014; Online January 27, 2015

A relevant challenge in hybrid electric vehicles (HEVs) and full EVs is the torque control of externally excited synchronous machines (EESMs). Effective torque control requires an efficient solution to the state reference generation problem, which is a nonlinear nonconvex optimization problem. The goal of this paper is to develop a state reference generation algorithm based on the gridding of the state and output spaces. First, an approximation defined over a cubic partition of the torque function with a piecewise affine (PWA) function is made. As a result, the state reference generation problem is reduced in each cube to solving a convex optimization problem. Moreover, this approach provides guarantees about the error bound introduced by the state reference generation procedure for the full operational state-space. To illustrate the effectiveness and robustness of the proposed algorithm, several real-time results obtained on an industrial hardware-in-the-loop (HIL) test-bench are presented. The obtained results show significant improvement compared with existing state-of-the-art reference generation methods.

FIGURES IN THIS ARTICLE
<>
Copyright © 2015 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

EESM d–q equivalent circuit: (a) Direct-axis equivalent circuit and (b) Quadrature-axis equivalent circuit.

Grahic Jump Location
Fig. 2

State-space partitioning in 4000 cubes

Grahic Jump Location
Fig. 3

Output gridding and cubes indexed by I(yref = 100) for a state-space partitioning in 4000 cubes

Grahic Jump Location
Fig. 4

Real-time test-bench

Grahic Jump Location
Fig. 5

Control architecture for simulation

Grahic Jump Location
Fig. 8

Estimated power losses

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In