Title: Energy feedback power unit
Application Number: 200610141187 Application Date: 2006.10.13
Publication Number: 1949645 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02M5/44;H02M7/525;G05F1/66
Applicant(s) Name: Du Xinlin Address:
Inventor(s) Name: Du Xinlin
Attorney & Agent: xiaxian fu
Abstract:
    The invention is an energy feedback power unit used in series power unit-type high voltage inverter and implementing four-quadrant operating ability, and its control circuit comprises: filter circuit composed of three-phase capacitors and three-phase reactors, three-phase synchronous rectifier bridge composed of IGBTs, DC filter circuit composed of capacitors, unit inverter bridge composed of IGBTs, and synchronous rectification control circuit and unit inversion control circuit controlling the operating states of the three-phase synchronous rectifier bridge and unit inverter bridge, respectively. And it has rectifying and energy feedback functions, and simple structure, low losses, easy to implement, low-cost, having high power factor but no harmonic pollution to electric network. And the high voltage transformer composed by it has all functional characteristics of common high voltage transformers and ability to convert kinetic energy or potential energy into electric power to feed back to the electric network on the conditions of fast system braking or weight dropping.
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