Sub-exiter control for the series winding of a series-type or co

Details Sub-exiter control for the series winding of a series-type or co Sub-exiter control for the series winding of a series-type or co

1993-07-08

1996-02-20

Shoop, Jr., William M.

Electricity: motive power systems

Alternating current commutating motors

Universal or a.c.-d.c. motors

318440, 318140, 318493, 318494, 318530, H02K 2364

Patent

active

054931860

ABSTRACT:
Sub-excitation of a series-type excitation magnetic field winding for a DC motor or generator is provided by an auxiliary power supply which, when the voltage in the main circuit is low, supplies voltage through a diode to the main series field winding in order to keep the voltage at or near saturation and thereby improve motor efficiency.

REFERENCES:
patent: 3311802 (1967-03-01), Schenk
patent: 3398344 (1968-08-01), McCormick
patent: 4284932 (1981-08-01), Kawada et al.
patent: 4613805 (1986-09-01), Matsuo et al.
patent: 4724367 (1988-02-01), Nohmi et al.
patent: 5168207 (1992-12-01), Follmer
patent: 5268987 (1993-12-01), Sakoh

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