Title :
Development of a pulse power converter with a DSP instantaneous current control
Author :
Ujiie, A. ; Tanaka, S. ; Takahara, E. ; Miyazaki, A.
Author_Institution :
Toshiba Corp., Tokyo, Japan
Abstract :
The authors describe a system using PWM (pulse-width modulation) control converters and induction motors to control a load power of 1200 kW. GTO (gate turn-off) thyristors are used for a practical power circuit, and a microprocessor in combination with DSP (digital signal processing) control is used to configure the control circuit. It is shown that by switching GTO thyristors using DSP with a sample time of 32 μs, current control can be continued without any problems when asymmetrical flux saturation occurs in the transformer. This device has been developed with a view to application in high-speed railway systems
Keywords :
digital signal processing chips; electric current control; induction motors; microcomputer applications; power convertors; power engineering computing; thyristor applications; 1200 kW; 32 mus; DSP instantaneous current control; GTO thyristors; PWM control converters; asymmetrical flux saturation; digital signal processing; high-speed railway systems; induction motors; microprocessor; power circuit; pulse power converter; Circuits; Control systems; Digital control; Digital signal processing; Induction motors; Microprocessors; Process control; Pulse width modulation; Pulse width modulation converters; Thyristors;
Conference_Titel :
Industrial Electronics Society, 1989. IECON '89., 15th Annual Conference of IEEE
Conference_Location :
Philadelphia, PA
DOI :
10.1109/IECON.1989.69625
