DocumentCode :
3100005
Title :
PWM Current Driver Design and Implement for Electric Magnet of Magnetic Suspension System
Author :
Fan, Yi-Hua ; Chen, Kuan-Yu ; Wu, Cheng-Ju ; Lee, Po-Chao
Author_Institution :
Chung Yuan Christian Univ., Chung Li
fYear :
2007
fDate :
5-8 Nov. 2007
Firstpage :
1262
Lastpage :
1267
Abstract :
This research used the pulse width modulation technique to design a switched current driver design for the electric magnets of magnetic suspension system. Dye to the phenomenon of the MOSFET, the driver can operate in the great voltage and under the bigger electric currents than the traditional push-pull linear driver. Furthermore, the relationship of the force slew rate and the supply voltage are proposed. The driver is composed of the interior loop control circuit of the proposed driver made by the operational amplifier, the two-quadrant chopper, and the three-level PWM controller. The experimental results show the proposed driver better than the traditional push-pull linear driver in the response rate, the system bandwidth, the transition response as well as the low current distortion. The experimental results also shown the system bandwidth of the proposed driver may reach several kHz under the different loading condition.
Keywords :
PWM power convertors; choppers (circuits); driver circuits; electromagnets; operational amplifiers; switching convertors; MOSFET; PWM switched current driver; current distortion; electric magnet; force slew rate; interior loop control circuit; magnetic suspension system; operational amplifier; three-level PWM converter; transition response; two-quadrant chopper; Bandwidth; Current; Driver circuits; MOSFET circuits; Magnetic levitation; Magnetic modulators; Magnetic switching; Pulse width modulation; Space vector pulse width modulation; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics Society, 2007. IECON 2007. 33rd Annual Conference of the IEEE
Conference_Location :
Taipei
ISSN :
1553-572X
Print_ISBN :
1-4244-0783-4
Type :
conf
DOI :
10.1109/IECON.2007.4460267
Filename :
4460267
Link To Document :
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