Method for transferring power in a synchronous mode to a motor b

Details Method for transferring power in a synchronous mode to a motor b Method for transferring power in a synchronous mode to a motor b

1979-05-10

1982-01-12

Hix,, L.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 70, 307 87, 307127, 324 83R, H02J 906, H02J 308

Patent

active

043107710

ABSTRACT:
In a typical power system, a motor bus is fed by a main power system; and, an auxiliary system is provided to alternatively feed the motor bus. When a fast transfer from the main power to the auxiliary power system is desired, for example, in case of fault occurring in the main system, the inventive method transfers power in a synchronous mode; that is, power is transferred from the auxiliary system to the motor bus when the phase difference of the auxiliary system with respect to the frequency of the residual voltage on the motor bus is essentially zero degrees.

REFERENCES:
patent: 2838685 (1958-06-01), Stineman
patent: 3226561 (1965-12-01), Tanjai
patent: 3493778 (1970-02-01), Cutler
patent: 3497711 (1970-02-01), Wuttig

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