Power supply frequency converter

Details Power supply frequency converter Power supply frequency converter

1988-11-25

1990-01-16

Salce, Patrick R.

Electric power conversion systems

Frequency conversion without intermediate conversion to d.c.

By semiconductor converter

363165, H02M 522

Patent

active

048947660

ABSTRACT:
The present invention achieves the above objects, among others, by providing apparatus for converting a supplied AC input signal into an AC output signal having a selected lower frequency than the frequency of the AC input signal, which apparatus translates individual half cycles of the supplied AC input signal to an intermediate output signal with selected amplitude and polarity such that during successive pairs of first and second periods, each such period corresponding to a predetermined number of half cycles of the AC input signal, the translated half cycles of the AC input signal all have the same first selected polarity during each first period and have the same second selected polarity during each second period, with the first and second polarities being opposite. The apparatus filters the intermediate output signal to develop the AC output signal having the selected lower frequency. Thus, the frequency of the AC output signal will be a selected fraction of the frequency of the AC input signal, the fraction being equal to the frequency of the AC input signal divided by the predetermined selected number of half cycles.

REFERENCES:
patent: 3300708 (1967-01-01), Rhyne, Jr. et al.

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