Source: Energy & Management Powernews, July 28, 2022
Infineon and Delta Electronics have developed a charging system that integrates photovoltaic system, e-car and home storage.
With the bidirectional system, solar power can be stored in electric vehicles and home batteries on sunny days and made available for the home grid in the evening. By the solution developed by Infineon Technologies AG and the energy management specialist Delta Electronics from Taiwan can serve by means of bidirectional inverters thus also the electric car as a buffer storage or for emergency power supply of the home. More and more cars are equipped for this and new vehicle-to-home and vehicle-to-grid systems can be realized with the bidirectional energy flows, according to a statement from the companies.
"In order to make a sustainable contribution to decarbonization, we have to think of electromobility holistically: from the generation of green electricity and a stable, efficient grid infrastructure to storage and consumption," explained Peter Wawer, head of Infineon's Industrial Power Control division. "With our solutions for bidirectional charging, the electric car can be charged cost-effectively with solar power at home and equally serve as a buffer storage."
With an average consumption of 10 to 15 kWh of energy per day in a single-family home, a fully charged car battery with a capacity of 30 to 100 kWh can theoretically provide several days of power.
With an output power of about 10 kW, Delta's new system allows a maximum continuous current of 34 A and achieves peak efficiencies of more than 97.5%. To increase power density, power semiconductors made of silicon carbide (SiC) from Infineon are used. According to the company, this reduces losses when converting the current by around half compared with silicon-based semiconductors. The size of charging stations can thus be reduced by about 30%, and charging times are also shortened by 10 to 15%.
For more information on the bidirectional charging system, visit the Infineon Technologies AG site.
Author: Günter Drewnitzky
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