Protection system for alternating current, battery powered elect

Details Protection system for alternating current, battery powered elect Protection system for alternating current, battery powered elect

1992-04-21

1993-07-13

Shoop, Jr., William M.

Electricity: motive power systems

Battery-fed motor systems

318434, 318799, H02P 540

Patent

active

052277038

ABSTRACT:
A battery powered traction vehicle propulsion system uses an alternating current (AC) adjustable speed electric traction motor to propel the vehicle. The motor is connected to a source of controllable AC power that is responsive to a control signal for setting the value of power applied to the motor. A function generator produces the control signal in response to a command signal and limits the rate of change of the control signal and its minimum and maximum values. The minimum and maximum values are varied in response to preselected operating characteristics of the propulsion system, such as, for example, battery voltage, motor temperature, motor and vehicle speed and control system temperature.

REFERENCES:
patent: 3569810 (1971-03-01), Thiele
patent: 3868554 (1975-02-01), Konrad
patent: 4292531 (1981-09-01), Williamson
patent: 4495449 (1985-01-01), Black et al.
patent: 4667480 (1987-05-01), Bessler

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