Abstract
A flexible power distribution modulation strategy for single-phase dual-input inverter was proposed in this paper. Taking the three-port DC-AC converter as an example, the DC ports include a high-voltage port VH and a low-voltage port VL, and the low-voltage port can send power to AC port even though the voltage is smaller than AC port. The power between the DC ports can also be distributed flexibly by controlling the duty cycle of current flowing through each DC port in each switching cycle. Power emitted from each DC port was analyzed and was verified by both simulation and experimental results. Finally, a 1.1kW prototype was built and tested to verify the practicality and effectiveness of the modulation strategy proposed in this paper.
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