Dynamic model reference PI control of permanent magnet AC motor drives

Stewart, Paul and Kadirkamanathan, Visakan (2001) Dynamic model reference PI control of permanent magnet AC motor drives. Control Engineering Practice, 9 (11). pp. 1255-1263. ISSN 0967-0661

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Dynamic model reference PI control of permanent magnet AC motor drives
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Abstract

The permanent magnet AC motor drive (PMAC) is a multivariable, non-linear, closely coupled system subject to saturation due to finite DC supply voltage and hard current limits for protection of the drive hardware. Model following controls can be applied to this class of moto rwith PI current controllers enabling tracking of quadrature current command values.
The presence of a finite supply voltage constraint results in reduced system performance when the current regulators saturate. A dynamic model reference controller is presented which includes the currents and voltage limits, constraining the magnitude of the command signals, operating the system to just within the bound of saturation, allowing the PI controllers to accurately track the commanded values and retain control of the current vectors. This regime ensures maximum possible dynamic performance of the system. The system and controller is simulated and experimentally verified, controller gain being found by Monte Carlo simulation.

Item Type:Article
Additional Information:The permanent magnet AC motor drive (PMAC) is a multivariable, non-linear, closely coupled system subject to saturation due to finite DC supply voltage and hard current limits for protection of the drive hardware. Model following controls can be applied to this class of moto rwith PI current controllers enabling tracking of quadrature current command values. The presence of a finite supply voltage constraint results in reduced system performance when the current regulators saturate. A dynamic model reference controller is presented which includes the currents and voltage limits, constraining the magnitude of the command signals, operating the system to just within the bound of saturation, allowing the PI controllers to accurately track the commanded values and retain control of the current vectors. This regime ensures maximum possible dynamic performance of the system. The system and controller is simulated and experimentally verified, controller gain being found by Monte Carlo simulation.
Keywords:Saturation, Feedback linearisation, Model reference control, PI control, Permanent Magnet AC Motor, Current Vector Control, Flux Weakening
Subjects:H Engineering > H660 Control Systems
H Engineering > H620 Electrical Engineering
Divisions:College of Science > School of Engineering
ID Code:2188
Deposited By:INVALID USER
Deposited On:28 Feb 2010 18:43
Last Modified:13 Mar 2013 08:34

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