Device for controlling rotational speed of electric motor

Details Device for controlling rotational speed of electric motor Device for controlling rotational speed of electric motor

1977-05-25

1980-07-08

Truhe, J. V.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318139, H02P 706

Patent

active

042119650

ABSTRACT:
A device for controlling the rotational speed of an electric motor, provided with a bypass contactor for short-circuiting a chopper, wherein the bypass contactor is turned on when the accelerator is actuated to the full extent and when the duty ratio of the chopper exceeds a predetermined value, so that the shock due to the turn-on of the bypass contactor is eliminated.

REFERENCES:
patent: 3361921 (1968-01-01), Montross et al.
patent: 3764870 (1973-10-01), Morton et al.
patent: 3936707 (1976-02-01), Yoshida et al.

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