2016-08-242016-08-242015-06-30http://hdl.handle.net/10919/72756DC link capacitance in a bi-directional AC/DC power converter using a full-bridge or H-bridge switching circuit can be greatly reduced and the power density of the power converter correspondingly increased by inclusion of a bi-directional synchronous rectifier (SR) DC/DC converter as a second stage of the power converter and controlling the second stage with a control loop having a transfer function common to both buck and boost modes of operation of the bi-directional SR DC/DC converter and a resonant transfer function to increase gain at the ripple voltage frequency (twice the AC line frequency) to control the duty cycle of the switches of the bi-directional SR DC/DC stage and controlling the duty cycle of the switches of the full-bridge or H-bridge switching circuit using a control loop including a notch filter at the ripple voltage frequency.application/pdfen-USPatenthttp://pimg-fpiw.uspto.gov/fdd/41/711/090/0.pdf134412461/1H02M3/1582H02M7/48H02J1/10H02J3/32H02J3/383H02J3/386H02M7/797H02M2001/007Y02B70/1425Y02E10/563Y02E10/566Y02E10/7639071141