Patent ID: 9263961
Filing Date: 2016-02-16
CPC Classification: H02M,Y02B,Y02P

Claim Text:
1. A DC/DC resonant converter system, comprising: a primary converter unit including a resonant tank circuit, the primary converter unit further including a plurality of primary switching units that form a primary H-bridge circuit configured to regulate the current flowing into the resonant tank circuit, the primary H-bridge circuit including a first leg having first and second primary switching units, and a second leg having second and third primary switching units; a controlled secondary rectifier unit including a plurality of rectifier switching units to reduce reactive power in the primary converter unit, the secondary rectifier unit including controlled bridge having a third leg with a first unidirectional switching unit connected to a first bridge diode, and a fourth leg with a second unidirectional switching unit connected to a second bridge diode; and a phase-shift controller in electrical communication with the primary converter unit and the controlled secondary rectifier unit, the phase-shift controller configured to determine a rectifier phase-shift angle based on the plurality of primary switching units and to control switching of the plurality of rectifier switching units based on the rectifier phase-shift angle, wherein the controlled bridge further comprises: a transformer having a center-tap node, the transformer including a first end connected between the first unidirectional switching unit and the first bridge diode, and a second end connected between the second unidirectional switching unit and the second bridge diode; and a center-tap diode including an anode connected to the center-tap node of the transformer and a cathode connected in common with the first and second unidirectional switches.