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Optimal control of PMSMs using model predictive control with integrator
Shintaro Matsutani,Tadanao Zanma,Yuji Sumiyoshi,Muneaki Ishida,Akihiro Imura,Masami Fujitsuna 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Permanent magnet synchronous motors(PMSM) have been receiving much attention due to their high effi-ciency. Usually, an inverter is used to drive the PMSM. In conventional current control systems, the inverter is regarded as an ideal amplifier. However, there exist various constraints such as voltage saturation in current transient response and output nonlinearity in over modulation. Inaddition, an output of the inverter is limited to discrete values in aprecise sense. Thus, the system has an a ture of a hybrid dynamical system. In this paper, we propose a novel model predictive control(MPC) based current control system to improve performance in cases where the inverter can not provide the appropriate output. In MPC, a steady state error often occurs due to the modeling error. In order to over come the problem, we extend the model in which the accumulation of the steady state error is included. The effectiveness of the proposed method is shown through simulations and experiments.