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Why did Porsche go to the trouble of designing an 800 V Taycan EV?
Porsche took on a considerable engineering challenge when it decided to design an 800 V EV system for the Taycan, because nearly every other hybrid and EV in the world operates at 400 V or less. There simply was not a wide range of high-voltage off-the-shelf parts that have been rigorously tested for the high demands of the automotive world (operating every day, in any climate on earth, for 10 to 15 years without issue). So, Porsche reportedly worked very closely with suppliers to design and qualify everything from the power semiconductors to the insulation.
But why go to the trouble? The answer comes down to heat generation along the charging current path from the electrical grid to the cells – in particular, the heat generated in DC fast charging cables and connectors. In fact, this is the limiting factor of the 400 V EV fast charging ecosystem.
Read the whole news on chargedevs.com