Motor control systems

Details Motor control systems Motor control systems

1974-07-12

1977-06-07

Dobeck, B.

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Braking

318 52, 318139, 318 88, H02P 300

Patent

active

040285979

ABSTRACT:
A battery-powered thyristor-controlled lift truck traction motor control system includes simple and economical means for providing plugging torque in a continuous or proportional manner. A dual-motor drive system disclosed allows series motors to be operated in parallel from a single thyristor control system during both acceleration and plugging conditions, and allows the two motors to be operated at widely different speeds without large currents circulating between them.

REFERENCES:
patent: 1327795 (1920-01-01), Whittaker
patent: 1371559 (1921-03-01), Hellmund
patent: 3134063 (1964-05-01), Hastings, Jr.
patent: 3179198 (1965-04-01), Hastings, Jr.
patent: 3190387 (1965-06-01), Dow
patent: 3356173 (1967-12-01), Holcombe
patent: 3454122 (1969-07-01), Grady, Jr.
patent: 3534239 (1970-10-01), Risberg
patent: 3596154 (1971-07-01), Gurwicz
patent: 3749192 (1973-07-01), Karchak, Jr. et al.
patent: 3769566 (1973-10-01), Mehta

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