Method for controlling a series resonant DC/DC converter

US8593831B2 · kind B2 · utility

Assignee

• Eltek Valere AS · NO

Inventors

• Roberto Rojas · Stockholm, SE
• Nils Backman · Stockholm, SE

Key dates

• Filing date: Oct 25, 2011
• Grant date: Nov 26, 2013
• Expiry date: Oct 25, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02B70/10
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

The invention relates to a method for controlling a series resonant DC/DC converter. The method comprises the steps of: defining a switching period TP having a first half period TA and a second half period TB and defining a subsequent switching period TP+1 after the switching period TP. In a next step, a first set (S1sc1; S1sc1, S4sc1) of switches of a first switching circuit (SC1) is controlled to be ON from the beginning Tstart of the first half period TA minus a time interval ΔTAE1, where the time interval ΔTAE1 is provided at the end of the first half period TA and a second set (S2sc1; S2sc1, S3sc1) of switches of the first switching circuit (SC1) is controlled to be ON from the beginning Tcenter of the second half period TB minus a time interval ΔTBE1, where the time interval ΔTBE1 is provided at the end of the second half period TB. A first set (S1sc2; S1sc2, S4sc2) of switches of a second switching circuit (SC2) is controlled to be ON in the first half period TA minus a time interval ΔTAS1 and minus a time interval ΔTAE2, where the time interval ΔTAS1 is provided at the beginning of the first half period TA and where the time interval ΔTAE2 is provided at the end of the firs…