Design Of Torque Hysteresis DTC Controller For Squirrel Cage Induction Motor
Journal: International Journal of Scientific & Technology Research (Vol.1, No. 6)Publication Date: 2012-07-25
Authors : Rahul Modanwal; S.K.Singh; Pushpender singh; Raj Kumar Sagar; Sanjay singh;
Page : 62-64
Keywords : Index Terms Induction motor; MATLAB; Braking chopper; Inverter; Rectifier; DTC controller; Hysteresis; Voltage Vector.;
Abstract
Abstract-Direct Torque Control or DTC as it is called is the very latest AC drive technology developed by ABB and is set to replace traditional PWM drives of the open- and closed-loop type in the near future. Direct Torque Control describes the way in which the control of torque and speed are directly based on the electromagnetic state of the motor. DTC is the first technology to control the real motor control variables of torque and flux. Because torque and flux are motor parameters that are being directly controlled there is no need for a modulator as used in PWM drives to control the frequency and voltage. This in effect cuts out the middle man and dramatically speeds up the response of the drive to changes in required torque. DTC also provides precise torque control without the need for a feedback device.
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