Power converter employing non-saturating interphase transformer

Details Power converter employing non-saturating interphase transformer Power converter employing non-saturating interphase transformer

1975-02-11

1976-05-18

Goldberg, Gerald

321 26, 321 47, H02M 7515

Patent

active

039581730

ABSTRACT:
A power converter for operation with a d.c. power supply to provide an output voltage having a level controlled in response to an external control signal. The converter uses a dual chopper configuraton with the out of phase outputs from the respective chopper halves being combined in an interphase transformer. To prevent the interphase transformer from saturating, the chopper control includes an oscillator, counter, D/A converter and phase delay comparator arrangement for maintaining substantially identical duty cycles in the respective legs while, of course, allowing the duty cycles to be varied in unison. The interphase transformer is wound in a configuration which presents a magnetic shunt between the halves of the transformer, said shunt serving to limit transients which might be coupled to the chopper load.

REFERENCES:
patent: 3331011 (1967-07-01), Landis
patent: 3487278 (1969-12-01), Turnbull et al.
patent: 3524990 (1970-08-01), Bajpai et al.
patent: 3648149 (1972-03-01), Brown et al.
patent: 3872372 (1975-03-01), Kautz et al.
Principles of Inverter CKTS by Bedford and Hoft, TK 2796B37, Dec. 23, 1964; pp. 231-278.

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