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This paper proposes a simple and effective method to reduce torque ripples for the torque predictive control (TPC) of permanent-magnet synchronous motors (PMSMs). The conventional TPC analyzes the relationship among the electrical torque, stator flux, and stator voltage using the magnitude of the stator voltage vector of PMSMs to obtain the angle of the reference voltage vector and accurately control...
This paper presents a simple fault detection method and fault-tolerant strategy based on the model predictive control theory. The proposed fault detection method can detect and locate a failed switch with current error signals dedicated to each switch, based on the position of space vectors. Following the fault detection, the proposed fault-tolerant control strategies are developed to produce three-phase...
This paper proposes a model predictive control space vector modulation (MPC-SVM) method for the torque and flux controls of an induction motor. The method to synthesize the reference voltage vectors according to pulse width modulation strategy and the model predictive control method that directly uses the space vector modulation method of the conventional matrix converter are described. Hence, the...
This paper proposes an improved model predictive control (MPC) algorithm for the direct torque and flux control of induction motors (IMs) using the three- level inverter. To reduce the calculation amount, which is the drawback of MPC, first the reference value and the state of the motor are analyzed to preselect the calculation region for the cost function; by only subdividing the voltage vectors...
This paper proposes a simple method direct torque control (DTC) based on space vector pulse width modulation (SVPWM) of surface-mounted permanent-magnet synchronous motors (SPMSM). The proposed DTC method calculates the optimized voltage vector using the motor parameters and the analysis of the relationship between the stator flux, torque, and stator voltage to calculate the optimized voltage vector...
In this paper, a torque ripple reduction method is presented for PMSM controlled by the torque predictive control. The proposed method, which predicts the duty ratio of the active stator voltage applied, makes it possible to relatively reduce the torque ripple in the steady state as well as to remain the good dynamic response in the transient state. With the duty ratio prediction method, the magnitude...
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