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A sensorless hybrid DTC drive for high-volume low-cost applications
- Source :
- IEEE Transactions on Industrial Electronics. Oct, 2004, Vol. 51 Issue 5, p1048, 8 p.
- Publication Year :
- 2004
-
Abstract
- A sensorless hybrid direct torque control (DTC) drive for high-volume low-cost industrial, domestic, and automotive applications has been developed using the inexpensive TMS329F243 digital signal processor controller. Under transient operating conditions, the drive is controlled using the classic bang-bang DTC. In the steady state, using linear torque and flux controllers, 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 pulsewidth modulation (SVPWM) technique. As a result, the irregular switching pattern typical for the classic DTC strategy is replaced with a quasi-optimal one, typical for the SVPWM. Description of the drive, including a novel motor state observer, is followed by selected experimental results confirming its excellent operating characteristics. Index Terms--Direct torque control (DTC), observers, sensorless ac drives, space-vector pulsewidth modulation (SVPWM).
Details
- Language :
- English
- ISSN :
- 02780046
- Volume :
- 51
- Issue :
- 5
- Database :
- Gale General OneFile
- Journal :
- IEEE Transactions on Industrial Electronics
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.123367604