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This paper presents a method for estimating the electrical angle of the rotor for permanent-magnet synchronous motors (PMSMs) in model predictive current control (MPCC) so that an encoder is removed for high reliability and low system costs. In our approach, an estimator of the electrical angle of the rotor is introduced in the MPCC. The effectiveness of the proposed method is verified through simulations...
This paper presents a model predictive-based current control for PMSMs. In our approach, a reference voltage to an inverter can be strictly treated as a discrete voltage vector so that the output saturation of the inverter is avoided. Various constraints can be also taken into consideration in our approach. Both tolerance ranges for current response and number of the switching operations are incorporated...
In this paper, a constrained optimization based approach is proposed for the switching control of inverters. This method achieves the best tracking performance of three phase currents, or equivalently the best tracking of torque command. This approach may be viewed as an improved SVM (space vector modulation) method. Detailed performance analysis proves that in the overmodulation region, a relative...
In this paper, a constrained optimization based approach is proposed for the switching control of inverters. This method achieves the best tracking performance of three phase currents, or equivalently the best tracking of torque command. This approach may be viewed as an improved SVM (space vector modulation) method. Detailed performance analysis and simulation prove that in the overmodulation region,...
In this paper, an innovative switching control approach is proposed for inverters. This method achieves the best sinusoidal reference tracking performance, is extremely easily to implement and robust to load uncertainty. Detailed performance bounds are derived which reveal the relationships between power source, current reference and fundamental switching period.
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