Abstract

Power factor correction (PFC) "flyboost" cell with a transformer having primary winding connected to input power and secondary winding connected to output rectifier, which has both functions as a flyback transformer and boost inductor. Combining the flyboost cell with DC/DC converter cells, forms a single-stage PFC converters. Both cells share one main switch and one controller. Letting the flyboost cell operate at Discontinous Coduction Mode requires a simple control for high power factor. Through flyboost cell, part of output power is processed once by main switch, and is referred to as direct power transfer (DPT), which will signficantly improve efficiency. The flyboost cell will automatically limit the DC bust voltage through flyboost transformer turn ratio. The converters are suitable for universal voltage applications.

Document Type

Patent

Patent Number

US 6,819,575

Application Serial Number

10/202,794

Issue Date

11-16-2004

Current Assignee

UCFRF

Assignee at Issuance

UCFRF

College

College of Engineering and Computer Science (CECS)

Department

Electrical Engineering & Computer Science - CS Division

Allowance Date

4-7-2004

Filing Date

7-25-2002

Assignee at Filing

UCFRF

Filing Type

Nonprovisional Application Record

Donated

no

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