Woo Jin Choi, “매트릭스 컨버터를 사용한 유도전동기 구동 시스템의 직접 토크 및 자속 제어를 위한 새로운 모델기반 예측제어 기법,” 아주대학교 공학석사 학위 논문, 2014. > Paper

This paper proposes a model predictive control space vector modulation (MPC-SVM) method for the torque and flux controls of

induction motors. 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 is

described. For the synthesis of reference voltage vectors, voltage vectors synthesized by the SVM are expressed as output voltage

vectors of an actual direct matrix converter by calculating output voltage vectors of the direct matrix converter, dividing, expressing,

and synthesizing by constant duty ratio. Hence, the reference voltage vector that minimizes the cost function of the torque and flux

error within the control period is selected and applied to the actual system. As a result, it is possible to perform the torque and flux

control of induction motors using only the MPC controller without a proportional-integral (PI) or hysteresis controller. Even though

the proposed control algorithm is more complicated and has lots of computations compare to the conventional MPC, it can predict

output voltages of the matrix converter of the SVM method and synthesize the reference voltage vectors. This feature can give the

reduction in computations and the change of the control performance through the adjustment of prediction horizon N. The proposed

method confirms the validity using the PSIM simulation and the experimental set of the matrix converter.