Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Load control
Patent
1982-05-10
1984-11-13
Goldberg, E. A.
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Load control
318 99, 363124, H02M 114
Patent
active
044828489
ABSTRACT:
A controllable power source is suitable for driving one or more electric motors from a low voltage battery. A converter steps up the d.c. voltage to a higher level at which the motors are designed to operate and a power regulator placed between the converter and each motor regulates the power which is drawn at the higher voltage by the motors. A current limit is imposed on the converter which is significantly less than the maximum current handling capabilities of the motors, so that when a motor attempts to draw an excessive current the output voltage of the converter drops accordingly. This enables the overall power handling capability of the converter to be minimize, while still allowing a motor to draw maximum current or maximum voltage, but not both simultaneously.
REFERENCES:
patent: 3750002 (1973-07-01), Gerhard
patent: 3947740 (1976-03-01), Tsuboi
patent: 4131829 (1978-12-01), Gocho
patent: 4179645 (1979-12-01), Wehrmuller et al.
patent: 4264948 (1981-04-01), Simmons et al.
patent: 4340931 (1982-07-01), Endo et al.
Dixon George G.
Heal John C. W.
Evans A.
Goldberg E. A.
The Marconi Company Limited
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