Sun, Z;
Guo, T;
Yan, Y;
Wang, X;
Li, S;
(2017)
A composite current-constrained control for permanent magnet synchronous motor with time-varying disturbance.
Advances in Mechanical Engineering
, 9
(9)
pp. 1-13.
10.1177/1687814017728691.
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Abstract
The problem of overlarge current protection of permanent magnet synchronous motor based on a single-loop control structure is discussed in this article. Under this structure, the previous limiting method of amplitude of q-axis current used in field-oriented control is unsuitable, which limits q-axis current by restricting the output of reference current. Conventional controllers (e.g. proportional-integral-derivative controller) usually cannot have a nice balance between satisfaction of current constraint and requirement of fast dynamic performance. Overlarge current may cause the damage of hardware. Aiming at this issue, a composite controller is proposed. Different from previous methods of state constraints, the effects of disturbance is taken into account of controller design. First, a finite-time current-constrained feedback control technique based on homogeneous approach is applied in the feedback design. Compared with conventional finite-time control, a punishment mechanism of over-current is added into the gain of controller. Second, a generalized proportional integral observer is adopted to estimate the uncertainties and disturbances. The estimated value is used in the feed-forward compensation design. Compared with the conventional proportional-integral-derivative controller and proportional-derivative + extended state observer controller, the proposed method not only limits q-axis current to a safe range but also shows a nice dynamic performance and a strong anti-disturbance ability. Both simulations and experiments are carried out, and the results demonstrate the effectiveness of the proposed control scheme.
| Type: | Article |
|---|---|
| Title: | A composite current-constrained control for permanent magnet synchronous motor with time-varying disturbance |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1177/1687814017728691 |
| Publisher version: | http://dx.doi.org/10.1177/1687814017728691 |
| Language: | English |
| Additional information: | Creative Commons CC-BY: This article is distributed under the terms of the Creative Commons Attribution 4.0 License (http://www.creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/ open-access-at-sage). |
| Keywords: | Finite-time current-constrained controller, anti-disturbance, generalized proportional integral observer, permanent magnet synchronous motor |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10188655 |
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