Abstract:
This project introduces a new output voltage regulation method for impedance control network (ICN) resonant dc-dc converters that alternates between full-bridge and half-bridge rectifiers. Topology morphing control allows the ICN converter to maintain soft switching across power levels, reduce output capacitance, and improve partial-power efficiencies compared to burst mode (on/off) control.
The ICN converter’s output voltage is regulated by a closed-loop control architecture that smoothes transitions between the topology morphing control’s multiple operating modes. A prototype 1-MHz, 120-W step-down ICN resonant converter with an input voltage range of 18-36 V, an output voltage of 12 V, and a 10:1 output power range has been built and tested with burst mode and topology morphing control.
Topology morphing control reduces output capacitance by 57% and converter losses at partial power levels by up to 46.5% in the prototype ICN converter. Under closed-loop control, the prototype ICN converter regulates output voltage despite input voltage and load variations.
Note: Please discuss with our team before submitting this abstract to the college. This Abstract or Synopsis varies based on student project requirements.
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