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Direct Torque Control (DTC) is becoming one of the most popular control methods for induction motors.This technique was introduced in the mid 1980's for voltage fed PWM inverter drives.Matrix converter (MC) has been studied widely for its advantages over the traditional converters.It is gradually employed for applications with its maturity in theoretical studies.A novel control strategy is put forward...
Matrix converter (MC) is superior to drive induction motor since it has more attractive advantages than conventional pulse width modulation (PWM) inverter like the absence of large dc-link capacitor, unity input power factor and bi-directional power flow. However, due to the direct conversion characteristic of MC, the drive performance of induction motor is easy to be influenced by input voltage disturbances...
This paper presents a modified direct torque control scheme for matrix converter drives. This method allows a reduction of the harmonic content of the input current without any negative effect on the drive performance and its simplicity. By using two switching configurations at each cycle, the synthesis of the input current vector is more accurate than the previous method at the same sampling period,...
This paper presents a new method to improve the sensorless performance of matrix converter drives using a parameter estimation scheme. To improve low-speed sensorless performance, the nonlinearities of a matrix converter drive such as commutation delays, turn-on and turn-off times of switching devices, and ON-state switching device voltage drop is modeled using p-q-r transformation and compensated...
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