专利名称：TWO-STAGE SINGLE PHASE BI-DIRECTIONAL
PWM POWER CONVERTER WITH DC LINKCAPACITOR REDUCTION
发明人：Dong Dong,Dushan Boroyevich,Ruxi
Wang,Fred Wang
申请号：US13441246申请日：20120406
公开号：US20120257429A1公开日：20121011
专利附图：
摘要：DC 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 powerconverter correspondingly increased by inclusion of a bi-directional synchronous rectifier(SR) DC/DC converter as a second stage of the power converter and controlling thesecond stage with a control loop having a transfer function common to both buck andboost modes of operation of the bi-directional SR DC/DC converter and a resonanttransfer function to increase gain at the ripple voltage frequency (twice the AC linefrequency) to control the duty cycle of the switches of the bi-directional SR DC/DC stageand controlling the duty cycle of the switches of the full-bridge or H-bridge switchingcircuit using a control loop including a notch filter at the ripple voltage frequency.
申请人：Dong Dong,Dushan Boroyevich,Ruxi Wang,Fred Wang
地址：Blacksburg VA US,Blacksburg VA US,Blacksburg VA US,Knoxville TN US
国籍：US,US,US,US
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