A new European project, TIGON, will develop technology and demonstrate how direct current (DC) microgrids can help the European Union’s (EU) electricity grids become greener, more efficient and resilient.
The project involves 15 partners from eight different European Member States. The EU’s Horizon 2020 research and innovation program is providing part funding for the $9.4 million (US) project, which fits into the EU’s wider plans for building a low carbon and climate resilient future.
Most grids operate on alternating current (AC), but the attractiveness of DC is increasing. This is due to the proliferation of renewable energy, most of which generate a DC output, as well as the increase in DC loads from modern electrical equipment like laptops, electric vehicles, and LED lighting.
As such, project TIGON aims to demonstrate deployment of DC-based grid architectures within the current energy system, with the ability to provide ancillary services to the main network.
“In a classic approach, the electric grid is AC because it is easier to change the voltage level with power transformers; this is a useful feature,” Jesús Muñoz, TIGON project coordinator and power electronics engineer at Spanish research center Fundación CIRCE, told Microgrid Knowledge.
“If you want to connect to DC devices, it is cumbersome because you have to convert firstly to AC and afterwards back to DC.”
Developing direct current microgrid solutions
Over the four years of the project, the international team will develop new software and hardware solutions to enable local DC infrastructure to better integrate renewables and store electricity. Two microgrids in France and Spain will be used to demonstrate the solutions, with the findings subsequently applied at two sites in Finland and Bulgaria to test replicability.
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