In order to solve the conventional direct torque control contradiction between the dynamic and static performance ,a permanent magnet synchronous motor system direct torque control architecture is proposed based on space vector modulation strategy . In this method flux and torque are controlled through stator voltage components in stator fluxlinkage coordinate axes and space vector modulation is used to control inverters.The simulation verifies that SVM-DTCis capable of effectively improving
International Journal of Advanced Network, Monitoring and Controls , ISSUE 1, 100–107
to the dual PWM converter of abolition DC link, and used space vector modulation to both rectifier link and inverter link which equivalent AC - DC - AC structure, and then back to matrix converter. Hysteresis current tracking method use hysteresis track on the output current to track the reference current.
Motor control strategy has VVVF control, vector control and direct torque control. Through the speed regulator, VVVF control can achieve closed loop of speed; Vector control to achieve
International Journal of Advanced Network, Monitoring and Controls , ISSUE 1, 54–60
calculate of observer feedback gain matrix. Experiments show that use of full-order state observer for the stator flux observed has higher accuracy, and it form of direct torque control system has better performance.
International Journal of Advanced Network, Monitoring and Controls , ISSUE 2, 76–81