HIGH EFFICIENCY INVERTER FOR DISTRIBUTED GENERATION

摘要

Systems, methods, and devices relating to a DC/AC inverter. The inverter has a full bridge converter and an output filter with an integrated magnetic subcircuit. The subcircuit has main and auxiliary inductors and is designed to steer the current ripple of the inverter's output to the power semiconductors in the full bridge converter. By doing so, zero voltage switching is achieved by the power semiconductors, thereby mitigating switching losses. At the same time the current ripple in the inverter's output is attenuated.

主权项

1. A DC/AC inverter comprising:
a DC-bus capacitor; a full bridge converter having a first and a second leg coupled in parallel, each leg comprising at least two power semiconductors, said DC-bus capacitor being coupled in parallel to said converter; an output filter having an integrated magnetic subcircuit for steering a current ripple at an output of said inverter to said power semiconductors in said converter, said output filter being coupled to said converter and to a load;wherein
said filter attenuates said current ripple at said output when said current ripple is steered to said converter.