Multiple chopper speed control system for compound motor

Details Multiple chopper speed control system for compound motor Multiple chopper speed control system for compound motor

1983-05-16

1988-06-14

Weldon, Ulysses

Electricity: motive power systems

Motor-reversing

Field circuit control

318338, H02P 504

Patent

active

047514396

ABSTRACT:
A compound-motor speed control system for a battery-powered vehicle (86) wherein the series winding (14) and the shunt winding (16) of the motor (12) are magnetically linked in energy transfer relation. A first current switch (18) is connected in series with the series winding (14) and the armature (15) and a second current switch (20) is connected in series with the shunt winding (16). A digitally-implemented speed control system (24) responds to the speed selection settings of an analog device (64) to operate the first switch intermittently while holding the second switch closed over a lower speed range, and to operate the second switch intermittently while holding the first switch closed over a higher speed range.

REFERENCES:
patent: 2853670 (1958-09-01), Johnstone
patent: 3601673 (1971-08-01), Mason
patent: 4080556 (1978-03-01), Buchwald et al.
patent: 4322667 (1982-03-01), Ohba
patent: 4408147 (1983-10-01), Gabel

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