Bridge-type frequency multiplier

Details Bridge-type frequency multiplier Bridge-type frequency multiplier

1982-07-29

1987-11-10

Beha, Jr., William H.

Electric power conversion systems

Frequency conversion without intermediate conversion to d.c.

363163, 363177, H02M 502

Patent

active

047061839

ABSTRACT:
An AC frequency conversion technique is disclosed using an H-switch toggled at irregular times to yield a chopped sinusoid output waveform of a given fundamental frequency. The irregular switching pattern is a departure from the classical cycloconverter frequency conversion approach. The H-switch is connected between a pair of power lines L1 and L1 and alternately switched between one and another ON state at any point in the AC cycle to yield any up-converted or down-converted output frequency of the chopped sinusoid output waveform. The output waveform has a positive half cycle during which the H-switch is in one ON state when L1 is positive with respect to L2 and is in the other ON state when L2 is positive with respect to L1. The output waveform has a negative half cycle during which the H-switch is in the one ON state when L1 is negative with respect to L2 and is in the other ON state when L2 is negative with respect to L1.

REFERENCES:
patent: 2342676 (1944-02-01), Lewis
"Static Power Frequency Changers", Guygui and Pelly, John Wiley & Sons, N.Y., 1976.

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