By M. Ahmad
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Additional info for Advances in Motor Torque Control
Study of energy efficiency Experiments were carried out to verify the performance of the torque control technique. One standard induction motor with the following motor data in physical units was tested: power 300 CV (220 kW), rated voltage 440 V, rated current 345 A, rated speed 1790 rpm, 4 poles. Due to the high current and power values, the experimental setup comprised a soft starter with torque control and a rated current of 365 A, a dc machine (300 kW) working as a dynamometer, an oscilloscope and an energy analyzer.
2001). Direct Torque Control of Induction Machines with Constant Switching Frequency and Improved Stator Flux Estimation, Proceedings of IEEE 27th Annual Industrial Electronics Society Conference, ISBN 0-7803-7108-9, Colorado, USA, November/December 2001. IEEE-USA. 2010). org/policy/positions>. Leonhard, W. (1988). Field-orientation for controlling AC machines - principle and application. Third International Conference on Power Electronics and Variable-Speed Drives, ISBN 0-85296-364-5, London, UK, July 1988.
This behavior is not desired, and it may damage the mechanical system components. , the same as that of the supply voltage. The current can thus be kept constant at a predefined value during the whole motor starting time. However, with regard to the torque at the motor shaft, the existence of a torque pulse close to nominal rotation is due to the SCRs’ trigger angle which becomes minimum, imposing a feeding voltage and sudden motor acceleration. Fig. 9. View of the hardware used to obtain experimental results.
Advances in Motor Torque Control by M. Ahmad