Optimization of the Supply Voltage System in Interleaved Converters Using Intercell Transformers

• Published in: IEEE transactions on power electronics Vol. 22; no. 3; pp. 934 - 942
• Main Authors: Forest, F., Meynard, T.A., Laboure, E., Costan, V., Sarraute, E., Cuniere, A., Martire, T.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.05.2007; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Circuit properties; Conversion; Couplers; Couplings; Electric currents; Electric potential; Electric, optical and optoelectronic circuits; Electrical engineering. Electrical power engineering; Electronic circuits; Electronic equipment and fabrication. Passive components, printed wiring boards, connectics; Electronics; Engineering Sciences; Exact sciences and technology; Filters; Inductors; Magnetic devices; Optimization; Power converters; Power electronics, power supplies; Power supply; Regulators; Signal convertors; Switching frequency; Transformers; Transformers and inductors; uninterruptible power supply (UPS) voltage regulator module (VRM); Uninterruptible power systems; Voltage; Test bench; Performance evaluation; Electric transformer; Power converter; Coupler; Optimization method; Bench test; Forming; Power supply; Power electronics; Experimental study; DC-DC power convertors; Addressing; Implementation; Optimization; Power converters; Series parallel connection; Uninterruptible power supply; uninterruptible power supply (UPS) voltage regulator module (VRM); Monolithic integrated circuit; Voltage regulators
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2007.897089

Interleaved power converters are now used in many different conversion systems involving various topologies (series or parallel) and related to different fields or loads. This paper deals with interleaved parallel commutation cells using coupling transformers with a possibly high number of cells. The first part of the paper is a reminder of the basics of magnetic couplers addressing monolithic as well as distributed implementations. The limits associated with the conventional supply of such couplers (supply voltages forming a direct polyphase system) are described. In the second part of the paper, an optimized voltage supply improving the performances of the system is introduced. Experimental results obtained on a seven-cells test bench validate the approach