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High-Efficiency Regulation Method for a Zero-Current and Zero-Voltage Current-Fed Push-Pull Converter
DOI:10.1109/TPEL.2010.2061237.png)
Abstract
En 中文
A new high-efficiency regulation method for a zero-current and zero-voltage current-fed push-pull converter is presented. The method proposed is based on the use of a controlled transformer as a postregulator, which adds or subtracts an additional voltage to the output filter of the converter. An auxiliary regulator, which only handles a percentage of the output power, controls this transformer, and therefore, results in much higher efficiency than a normal preregulator would have. The novelty of the presented converter is that regulation is achieved without affecting the zero-voltage and zero-current switching in any working conditions. Small-and large-signal models of the converter have been developed and a low-power prototype has been simulated and implemented. The good agreement, between the experimental simulations and theoretical results, validates the theoretical developments.
Keywords:
DC-DC power conversion
parallel regulation
resonant power conversion
travelling-wave amplifiers
zero-voltage zero-current switching (ZVZCS)
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