Title :
A fast-response current controller for microprocessor-based SCR-DC motor drives
Author :
Collings, Timothy D. ; Wilson, William J.
Author_Institution :
Saftronics Ltd., Stratford, Ont., Canada
Abstract :
The design of reversing armature power supplies for DC motors is considered. An LSI firing circuit, in conjunction with a high-speed digital signal processor (DSP), has been developed to adjust the firing angle between 0 degrees and 180 degrees for both positive and negative current control in a dual antiparallel-connected three-phase converter connected to a DC motor. A fast-response current controller is obtained by using feedforward techniques and a variable-structure proportional-integral compensator to produce an optimal current response under both continuous and discontinuous current conduction.<>
Keywords :
DC motors; computerised control; electric current control; electric drives; machine control; microcomputer applications; power convertors; predictive control; thyristor applications; two-term control; LSI firing circuit; continuous current conduction; discontinuous current conduction; dual antiparallel-connected three-phase converter; fast-response current controller; feedforward techniques; firing angle; high-speed digital signal processor; microprocessor-based SCR-DC motor drives; predictive control; reversing armature power supplies; variable-structure proportional-integral compensator; Circuits; Current control; DC motors; Digital signal processing; Digital signal processors; Large scale integration; Optimal control; Pi control; Power supplies; Proportional control;
Conference_Titel :
Industry Applications Society Annual Meeting, 1988., Conference Record of the 1988 IEEE
Conference_Location :
Pittsburgh, PA, USA
DOI :
10.1109/IAS.1988.25111
