Electric power conversion systems – Current conversion – With starting arrangement
Patent
1987-12-23
1989-04-11
Beha, Jr., William H.
Electric power conversion systems
Current conversion
With starting arrangement
363 97, H02M 75375
Patent
active
048211630
ABSTRACT:
An innovative start-up circuit is disclosed which uses ordinary solid-state components and which may be used with a wide variety of switched mode boost-buck integrated magnetic power converters, including those having only two winding bobbins, a boost section with enhanced gain, and several new and different core arrangements. The start-up circuit comprises a winding which is transformer coupled to the drive transformer, a capacitor which is charged by the application of power to the input of the converter, switching means for switching current from the input of the converter to the drive transformer in response to the charging of the capacitor, and means for preventing the capacitor from operating the switching means after the converter is placed into operation.
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Modern DC-to-DC Switchmode Power Converter Circuits, by R. P. Severns and Gordon E. Bloom, Van Nostrand Reinhold Co., 1985.
Core Selection for and Design Aspects of an Integrated-Magnetic Forward Converter by E. Bloom, IEEE Applied Power Electronics Conference, New Orleans, Conference Proceedings, Apr., 1986, pp. 141-150.
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