Title :
A versatile PWM driver for electric machines: design and experiments
Abstract :
A low cost pulse-width modulated (PWM) power unit for electric machines is proposed in this paper. This device consists of a three-phase converter based on a half-bridge configuration, a PWM signal generator, a hardware feedback loop with a Hall-effect current sensor and an adjustable hardware PI controller. Based on a simple mathematical model of the current progress in an inductive load supplied by a PWM power converter, the current response as a function of the PWM duty-cycle, the voltage supply and the other parameters of the electric machine is determined. The performance of the power unit prototype is tested and confirmed by experiments carried out on a direct-drive DC motor (in particular, an ESA 3S by Motor Power Company) and on a direct-drive switched reluctance motor (in particular a YS3040GN501 by NSK).
Keywords :
DC motor drives; Hall effect devices; PWM power convertors; bridge circuits; electric current control; electric current measurement; electric sensing devices; feedback; machine control; reluctance motor drives; two-term control; ESA 3S; Hall-effect current sensor; Hall-effect current sensors; Motor Power Company; PWM driver; PWM power converter; PWM signal generator; YS3040GN501; adjustable hardware PI controller; current regulation; current response; direct-drive DC motor; direct-drive switched reluctance motor; electric machines; half-bridge configuration; hardware feedback loop; inductive load; mathematical model; pulse-width modulated power unit; three-phase PWM converter; voltage supply;
Conference_Titel :
Industrial Electronics, 2002. ISIE 2002. Proceedings of the 2002 IEEE International Symposium on
Print_ISBN :
0-7803-7369-3
DOI :
10.1109/ISIE.2002.1026356
