Harmonic eliminating apparatus

Details Harmonic eliminating apparatus Harmonic eliminating apparatus

1978-03-02

1980-06-03

Rubinson, Gene Z.

Electricity: motive power systems

Synchronous motor systems

Field winding circuits

318822, H02P 104

Patent

active

042063957

ABSTRACT:
An AC motor has polyphase stator windings connected to an AC bus and has polyphase rotor windings connected directly or through impedances to capacitors. The capacitances of the capacitors are selected so as to be such that the AC motor exhibits a small input impedance for a specific frequency to be eliminated, thereby preventing the power factor from being since the fundamental frequency is not affected in any way under a light load. As a result, harmonics can be eliminated without causing any excessive AC source voltage.

REFERENCES:
patent: 1477405 (1921-04-01), Weber et al.
patent: 1899719 (1933-02-01), Putman
patent: 2436302 (1948-02-01), Hyde et al.
patent: 2508771 (1950-04-01), Pell
patent: 2872633 (1959-02-01), Schurr
patent: 2958814 (1960-11-01), Foote

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