Voltage-Reference Active Power Decoupling Based on Boost Converter for Single-Phase Bridge Inverter

摘要

With the development of renewable energy systems such as photovoltaic (PV) systems, single-phase inverters are popular in low power distributed generations. But the single-phase voltage-source bridge inverters has low DC voltage utilization and power mismatch between the input and output sides. To address these issues, additional circuits and modulation techniques have been applied to the bridge inverters, but those methods generally add extra power electronics or complicate the control strategy. In this paper, a voltage-reference active power decoupling method without additional power electronics is applied to the typical boost converter and the voltage-source bridge inverter. Simulation and experimental results verified the feasibility of the proposed power decoupling method on the two-stage single-phase bridge inverter with boost converter.