Controller for a resonant converter

Details Controller for a resonant converter Controller for a resonant converter

1986-09-15

1987-09-15

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 98, H02M 3337

Patent

active

046943838

ABSTRACT:
A controller for a resonant DC/DC converter having at least one power switch which is controlled to develop intermediate AC power in a resonant circuit includes means for developing a signal representing the current in the resonant circuit, an integrator having an input coupled to the developing means for integrating the signal developed thereby and a multiplier having a first input coupled to an output of the integrator and further having a second input and an output at which is developed a multiplied signal. A comparator is coupled to the output of the multiplier for comparing the multiplied signal at such output against a reference signal and a frequency-to-voltage converter is coupled between the output of the comparator and a second input of the multiplier for developing a feedback signal which is multiplied by the multiplier with the output of the integrator to derive the multiplied signal. The comparator develops signals which control the switch in the resonant converter so that static and dynamic stability is improved.

REFERENCES:
patent: 3659184 (1972-04-01), Schwarz
patent: 3953779 (1976-04-01), Schwarz
patent: 4200830 (1980-04-01), Oughton et al.
Kiankhooy-Fard, "Single SCR High Frequency Regulated DC Power Supply", IBM Tech. Discl. Bul., vol. 14, No. 8, pp. 2372, 2373, Jan. 1972.

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