An Interlinking Converter for Renewable Energy Integration Into Hybrid Grids

This letter proposes an interlinking converter architecture, which enables flexibly integrating renewable energy into hybrid grids. The proposed converter has one ac port, and two dc ports, offering a flexible solution to integrating various dc, and ac sources, which can also be versatilely configured as a dc-dc converter, a dc-ac inverter, or a dc-dc/ac multiport converter. The general concept of the architecture, its common-mode voltage analysis, and flexible operation modes are detailed in this letter. Experimental tests are performed on an example converter with a dedicatedmodulation strategy. The test results confirm the concept in terms of flexible conversion, high power density, low leakage currents, as well as controllable power flow.

Automated summary

This letter introduces an interlinking converter architecture that can efficiently integrate various types of DC and AC sources. Experimental tests confirm the advantages of this architecture in terms of flexible conversion, high power density, and controllable power flow.