Electromobilty is a fascinating subject. Travelling without exhaust emission and with low noise is a great experience. The possibility of accurate and high dynamic control of electric drives opens up a large area of intelligent braking and effective stabilizing concepts. Powerful drives of more than 200 kW can accelerate eCars to 100km/h in 5 seconds. These impressive figures make clear, electric car does not mean low power car. But the most unpleasant issue is the low energy capacity of the battery compared to fuel and the long time to recharge it. Connected to a normal power socket of 230 V /16 A it takes more than 10 hours to charge the energy of 37 kWh. Such long time calls for higher charging power. Based on a normal house installation of a three phase low voltage grid, depending on the maximum current, power values of 11 kW (16A) or 22 kW (32A) are possible. In some cases, when a 63A installation is available, even 44kW can be achieved. There is a need for powerful charging devices not only because of possible driving scenarios, but also because of the great synergies between electric cars and a smart grid. An effective smart grid integration of electric cars for intelligent load management is only possible with bidirectional high power charging electronics. Such a unit is described here.
Grid-bound eCar charging using the inverter
2012
6 Seiten, 9 Bilder, 6 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
U-Box: eCar as technology demonstrator for innovative materials and processes
Kraftfahrwesen | 2011
|A new functional architecture for the improvement of eCar efficiency and safety
Kraftfahrwesen | 2012
|Constant current fast charging of electric vehicles via DC grid using dual inverter drive
Europäisches Patentamt | 2024
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