IEEE Transactions on Energy Conversion, Vol.33, No.3, 1384-1391, 2018
A Combined Control for Fast and Smooth Performance of IPM Motor Drives Over Wide Operating Conditions
This paper presents a new combined vector and direct torque control (CC) system for interior permanent magnet motor drives to achieve improved motor performance. High-performance motor control systems are always aimed at fast and smooth motor performances. Also, simplicity and parameter independence are much anticipated in motor control systems. The proposed system uses fast production of torque producing current command and smooth production of flux producing current command, in connection with a switching table. The CC enjoys minimal parameter dependence and controller tuning challenges. Analysis of motor performance under the control system shows rapid motor dynamics with low torque and flux linkage ripples and current harmonics, in addition to rather uniform inverter switching. Simulation and experimental results obtained from a 1 hP motor under the proposed control system confirm the above-mentioned performance merits. Also, extensive simulation results show the control performance superiority in comparison with vector control, direct torque control, and an existing CC.
Keywords:Permanent magnet synchronous motors;ac motor drives;switching frequency;steady state operation;dynamic response