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      Classical Model Predictive Control of a Permanent Magnet Synchronous Motor

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          Abstract

          A model predictive control (MPC) scheme for a permanent-magnet synchronous motor (PMSM) is presented. The torque controller optimizes a quadratic cost consisting of control error and machine losses repeatedly, accounting the voltage and current limitations. The scheme extensively relies on optimization, to meet the runtime limitation, a suboptimal algorithm based on differential flatness, continuous parameterization and linear programming is introduced. The multivariable controller exploits cross-coupling effects in the long-range constrained predictive control strategy. The optimization results in fast and smooth torque dynamics while inherently using field-weakening to improve the power efficiency and the current dynamics in high speed operation. As distinctive MPC feature, constraint handling is improved, instead of just saturating the control input, field weakening is applied dynamically to bypass the voltage limitation. The performance of the scheme is demonstrated by experimental and numerical results.

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          Author and article information

          Journal
          2012-12-23
          2012-12-28
          Article
          1212.5815
          9cbb0d17-c2ed-4d1c-8d13-b325ed763ca5

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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          Preprint of: European Power Electronics and Drives Journal (EPE J.), Vol. 22, No. 3, pages 24 - 31, 2012. Invited paper
          cs.SY math.OC

          Numerical methods,Performance, Systems & Control
          Numerical methods, Performance, Systems & Control

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