Electricity: motive power systems – Having plural – diverse or diversely controlled sources – Different voltages
Patent
1974-09-26
1976-10-05
Dobeck, B.
Electricity: motive power systems
Having plural, diverse or diversely controlled sources
Different voltages
200 12, 318139, H02P 720
Patent
active
039847446
ABSTRACT:
A speed control system for electric vehicles for varying the applied voltage to a series wound traction motor to vary the speed thereof by dividing the main power source into a number of small units, which are then grouped and re-grouped through a series of relays actuated by a controller to provide several values of voltage from low to high voltage in an orderly progressive manner. The circuit is also provided with a ballast or surge-limiting resistor in each grouping and re-grouping, resulting in a smooth power flow and thus smooth speed change while at the same time limiting the battery drain to a safe maximum. The ballast resistor is automatically shunted out of the power circuit as the vehicle picks up speed, thereby providing an intermediate control point between each battery re-grouping step.
REFERENCES:
patent: 1291233 (1919-01-01), Storer
patent: 1474942 (1923-11-01), Probst
patent: 1781892 (1930-11-01), Chipmen
patent: 2333772 (1943-11-01), Eaton
patent: 3241019 (1966-03-01), Gross
patent: 3249836 (1966-05-01), Stamm
patent: 3300698 (1967-01-01), Bopp et al.
patent: 3336516 (1967-08-01), Keeley
patent: 3437282 (1969-04-01), Honkonen et al.
patent: 3611091 (1971-10-01), Gunderson
Dobeck B.
Greigg Edwin E.
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