Understanding Tesla Power Electronics

Discussion in 'Tesla' started by bwilson4web, May 4, 2021.

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  1. bwilson4web

    bwilson4web Well-Known Member Subscriber

    I have been skeptical of the CCS-1 and even the J1772 because they are larger and often less capable than the Tesla connector. This Weber State YouTube is a deep dive behind the technology:



    To compare and contrast:
    • J1772 vs Tesla - J1772 is larger. Although the J1772 spec reports up to ~80 A DC capable, there are no know J1772 with both AC and DC capability much less any non-Tesla EVs that take DC via the J1772.
    • CCS-1 vs Tesla - at least three times the face area, an extra DC pair, it is heavy. Deployed, we find 350 kW fast DC chargers with up to 800 V, if capable. So then a typical, non-Tesla EV plugs in too often limited to 50 kW.
    • Tesla vs rest - a bluetooth transmitter will open the charging access port. There is no second charge port cover to manually remove. The protocol to charge back to the car's owner credit card is universal versus a collection of charger specific cards or generic credit card.
    Bob Wilson
     
    Last edited: May 4, 2021
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  3. marshall

    marshall Active Member

    New chargers are often 100KW or more, so that will change with time.

    What I found interesting was how easily a faster charging Audi could beat a more efficient Tesla Model 3 in the video you referenced earlier.

    True for Tesla locations, but again things are changing. EVgo is adding Tesla connectors to their stations. So now you need an EVgo setup if you want the convenience of using an EVgo location.

    In the state of Washington, the new EVgo 100KW stations are setup for Tesla vehicles, and maybe 25% of the old 50KW stations are now setup with Tesla connectors.
     
  4. bwilson4web

    bwilson4web Well-Known Member Subscriber

    Uh, cards and Apps are not a Tesla charger problem. It is the non-Tesla charging locations that require cards or Apps. For example, I drove to Murfreesboro, 110 miles away but forgot my wallet. Supercharging gave my 2019, Std Rng Plus Model 3 the miles needed to get home.

    Bob Wilson
     
  5. marshall

    marshall Active Member

    Yes, I understand that.
     

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