Title :
A practical implementation of a DSP based induction motor drive
Author :
Atkinson, D.J. ; Acarnley, P.P.
Author_Institution :
Newcastle upon Tyne Univ., UK
Abstract :
The practical implementation of a high performance induction motor drive is described. This system uses a 20 kHz switching, 2 kW IGBT inverter controlled by a TMS320C31 digital signal processor. In order to achieve rapid well damped torque response the drive is based on vector control principles. A digital space vector delta current controller is used to position the instantaneous stator current vector. The success of this method is due to the relatively high inverter switching rates. Both simulation and experimental results are included. Also a new current control strategy is proposed which operates with DC link current measurement only. This method uses a modified form of the above mentioned delta modulation scheme in which a redundant switching state is used to yield current vector position. Simulation results are included for this scheme
Keywords :
delta modulation; digital control; digital signal processing chips; electric current control; electric drives; induction motors; insulated gate bipolar transistors; invertors; machine control; power transistors; switching circuits; 2 kW; 20 kHz; DC link; DSP; IGBT; TMS320C31; delta modulation; digital control; digital space vector delta current controller; induction motor drive; inverter switching; machine control; performance; power transistors; stator current vector; torque response; vector control;
Conference_Titel :
Power Electronics and Applications, 1993., Fifth European Conference on
Conference_Location :
Brighton
