Dual voltage electrical system

Details Dual voltage electrical system Dual voltage electrical system

1987-08-07

1988-05-31

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

322 29, 322 90, 322 94, 363162, H02J 714, H02M 530, H02P 900

Patent

active

047483954

ABSTRACT:
A dual voltage motor vehicle electrical system wherein a pair of batteries are connected in series across the direct voltage output terminals of a bridge rectifier that is connected to a polyphase output winding of an alternating current generator. First and second groups of controlled rectifiers are connected between a junction of the batteries and the generator output winding. In low speed operation of the generator the groups of controlled rectifiers are alternately biased conductive. The time period of conduction of the groups of controlled rectifiers is controlled as a function of the difference in the voltages across the respective batteries. The phase voltages of the output winding are summed by a summing amplifier to provide a control signal. The system includes means responsive to the control signal for preventing simultaneous conduction of the groups of controlled rectifiers.

REFERENCES:
patent: 3293448 (1966-12-01), Amato
patent: 3320514 (1967-05-01), Lawrence
patent: 3832624 (1974-08-01), Gilmore et al.
patent: 3882371 (1975-05-01), Shimer et al.
patent: 3942092 (1976-03-01), Bourbeau et al.
patent: 4686422 (1987-08-01), Radomski

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