Digitally controlled rectifying system for driving a motor

Details Digitally controlled rectifying system for driving a motor Digitally controlled rectifying system for driving a motor

1984-12-28

1986-01-28

Shoop, Jr., William M.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318257, 318314, 318606, 318599, H02P 516

Patent

active

045674086

ABSTRACT:
A digitally controlled rectifying system used for driving a d.c. motor through antiparallel connected forward and reverse converters. The firing phase angle of the converters is shifted by 180.degree. at a time of gate switching operation for the converters so that the load current is formed to become zero, and after the gate switching operation the firing phase angle is shifted to a position at which the load current is substantially zero, whereby the time lag of control occurring at the switching operation of the converters can be minimized irrespective of the load condition.

REFERENCES:
patent: 3413534 (1968-11-01), Stringer
patent: 3487279 (1969-12-01), Stringer et al.
patent: 3590350 (1971-06-01), Munson
patent: 3617844 (1971-11-01), Grygera
patent: 4090116 (1978-05-01), Lippitt
patent: 4263557 (1981-04-01), Tarvinen
patent: 4268782 (1981-05-01), Kawada et al.
patent: 4277825 (1981-07-01), Johnson
patent: 4471281 (1984-09-01), Uezumi et al.

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