| | | The Control platform that makes the difference |  |
| DTC Direct Torque Control
Direct Torque Control, DTC, is a revolutionary motor control method for AC Drives which allows accurate control of both motor speed and torque without pulse encoder feedback from the motor shaft. It is now considered the very best control platform available in AC Drives Technplogy.
Direct Torque Control (DTC) is an optimised AC drives control principle where inverter switching directly controls the motor variables i.e. flux and torque.
The measured motor current and voltage are inputs to an adaptive motor model which produces an exact actual value of flux and torque every 25 microseconds.
Motor torque and flux two-level comparators compare the actual values to the reference values produced by torque and flux reference controllers.
Depending on the outputs from the two-level controllers, the optimum pulse selector directly determines the optimum inverter switch positions.
The inverter switch positions again determine the motor voltage and current, which in turn influence the motor torque and flux and the control loop is closed.
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