Digital slip frequency generator and method for determining the

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322 28, 322 29, H02P 942

Patent

active

048191795

ABSTRACT:
The output frequency of an electric power generator is kept constant with variable rotor speed by automatic adjustment of the excitation slip frequency. The invention features a digital slip frequency generator which provides sine and cosine waveforms from a look-up table, which are combined with real and reactive power output of the power generator.

REFERENCES:
patent: 3731169 (1973-05-01), Burgholte
patent: 3832609 (1974-08-01), Barrett et al.
patent: 4246531 (1981-01-01), Jordan
patent: 4327420 (1982-04-01), Gdula et al.
patent: 4463306 (1984-07-01), de Mello et al.

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