Controller for smart vehicle-to-grid chargers: Page 2 of 3

March 08, 2019 //By Nick Flaherty
Controller for smart vehicle-to-grid chargers
A UK project is looking to link smart buildings with electric vehicles and the electricity grid.
can sell it onto people who need to interface chargers to OCCP such as converting chargers to smart charger or managing a group of chargers"

The box itself is a low power board independently of the charger via a DC supply, charge rate, diagnositcs from the charger, but that could be a DC fast charger or AC charger.

The project team at Aston University is investigating  a prediction model for EV battery-life performance considering factors such as State-of-Charge, State-of-Health, Charging-speed, Depth-of-Discharge, and remaining energy capacity. Power quality issues for different V2G/network scenarios is also being investigated with research findings disseminated to industry and academia. Three V2G charge-posts and harmonic meters have been installed are now fully commissioned and ready for service. 

"Nortech are looking after the grid to building section while GridEdge are doing the smart building section and we are doing the vehicle to building section," said Power. "The issue that they had was V2V charging is very new and operate on different standards so we needed a way of getting the different types of chargers on the same standard so they could work with standard servers and IT infrastructure. The main standard for charger OCCP running 1.5 and 1.6, but that doesn’t have anything around V2G so OCCP V2 will cover this in a way. It’s built more around widening the OCCP reach within the smartgrid infrastructure, not just the transaction for charging."  

The work will also reduce the need for chargers to use apps or smartcards to charge users. 

"Going forward there’s a standard for plug and play to get rid of smartcards and apps and the finiciail side will be handled over the cable. It’s a separate standard but incorporated into V2 and into the charger," he said. "A lot of these chargers are going ot have proprietary interfaces so we are having to code software to talk to the charger, with their own structure for comms. That’s


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