Abstract
A bidirectional, interleaved, multiphase, multidevice, soft-switching, field-programmable gate array (FPGA)-controlled, buck–boost converter with real-time pulse width modulation (PWM) reconfiguration capabilities is presented and validated experimentally. This topology, named multi-interleaved bidirectional buck–boost converter, is intended for medium- and high-power bidirectional dc power conditioning like battery- or supercapacitor-based power systems. Theoretical description of the converter, PWM driving scheme, and design issues is first presented. PWM generation and average current digital control are described for an FPGA-based implementation; and finally, a scaled-down prototype provides experimental validation of the proposed converter.
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