DocumentCode :
3320760
Title :
Torque control of brushless DC motors applied to electric vehicles
Author :
Chu, C.L. ; Tsai, M.C. ; Chen, H.Y.
Author_Institution :
Dept. of Electr. Eng., Southern Taiwan Univ. of Technol., Tainan, Taiwan
fYear :
2001
fDate :
2001
Firstpage :
82
Lastpage :
87
Abstract :
This paper presents a high-performance torque control system for brushless DC motors applied to electric scooters, with the aim of achieving similar output characteristics to that of continuously variable transmissions. Due to the fact that brushless DC motors applied to electric vehicles requires a wide range of operating speeds, phase advance control and field weakening control techniques are adopted in this paper. For the practical application of electric scooters, the control scheme uses only one current sensor to measure the DC bus current to achieve torque control, instead of two current sensors for three phase currents. Also three position Hall sensors are used to perform phase advance control and field weakening control, instead of an expensive encoder. Both the theoretical derivation and experimental verification for the proposed control scheme are presented in this paper, where the hardware implementation is carried out based on a three phase permanent magnet motor and a TI TMS320F240 digital signal processor
Keywords :
brushless DC motors; closed loop systems; control system synthesis; digital signal processing chips; electric current control; electric vehicles; machine testing; machine theory; machine vector control; parameter estimation; permanent magnet motors; torque control; traction motors; velocity control; TI TMS320F240 digital signal processor; brushless DC motors torque control; electric scooters; electric vehicles; field weakening control; operating speed range; phase advance control; position Hall sensors; three-phase permanent magnet motor; Brushless DC motors; Current measurement; Electric variables control; Electric variables measurement; Electric vehicles; Magnetic field measurement; Mechanical power transmission; Motorcycles; Torque control; Torque measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electric Machines and Drives Conference, 2001. IEMDC 2001. IEEE International
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-7091-0
Type :
conf
DOI :
10.1109/IEMDC.2001.939278
Filename :
939278
Link To Document :
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