Title :
A sensorless hybrid DTC drive for high-volume applications using the TMS320F243 DSP controller
Author :
Lascu, Cristian ; Trzynadlowski, Anhzej M.
Author_Institution :
Fac. of Electr. Eng., Politehnica Univ., Timisoara, Romania
Abstract :
A sensorless hybrid direct torque control (DTC) drive for high-volume industrial, domestic and automotive applications has been developed using the popular and inexpensive TMS329F243 DSP controller from Texas Instruments. Under transient operating conditions, the drive is controlled using the classic bang-bang DTC. In the steady state, the control system generates a reference voltage vector for the inverter feeding the induction motor. The vector is then realized using the well-known space-vector PWM (SVPWM) technique. As a result, the irregular switching pattern typical for the classic DTC strategy is replaced with a quasi-optimal one characteristic for the SVPWM. Description of the drive, including a novel motor state observer, is followed by selected experimental results confirming its excellent operating characteristics.
Keywords :
DC-AC power convertors; PWM invertors; bang-bang control; control system synthesis; digital control; digital signal processing chips; induction motor drives; machine testing; machine theory; machine vector control; observers; power engineering computing; switching circuits; torque control; TMS329F243 DSP controller; applications; bang-bang DTC; control design; control performance; inverter; motor state observer; operating characteristics; quasi-optimal switching pattern; reference voltage vector; sensorless hybrid direct torque control induction motor drive; space-vector PWM; steady state; transient operating conditions; Automotive applications; Digital signal processing; Electrical equipment industry; Industrial control; Instruments; Sensorless control; Space vector pulse width modulation; Steady-state; Torque control; Voltage control;
Conference_Titel :
Industry Applications Conference, 2001. Thirty-Sixth IAS Annual Meeting. Conference Record of the 2001 IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-7114-3
DOI :
10.1109/IAS.2001.955464
