Multi-input DC/DC converters with zero-current switching
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United States of America Patent
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May 29, 2012
Grant Date -
Aug 28, 2008
app pub date -
Feb 23, 2007
filing date -
Feb 23, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A modular-based, zero-current-switched (ZCS), isolated full-bridge boost converter with multiple inputs is disclosed. Each converter module is used to match the connected input source and control the amount of power drawn from the source. The power from various sources are combined together and delivered to the load through a multiphase transformer. The input inductor of each boost-derived converter module keeps the input current constant and acts as a current source to drive the multiphase transformer through a phase-shifted-controlled full bridge converter. By connecting an auxiliary circuit across the full-bridge input in each module, the transformer leakage inductance and output capacitance of the switching devices are used to create resonant paths for facilitating zero-current-switching of all switching devices.
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