Comments by "John Berry" (@user-ud6ui7zt3r) on "HUGE problem with EV Charging Stations that no one mentions | MGUY Australia" video.

  1. I see what you are trying to say, but I’m also thinking that your claim is not true. I don’t know what delivery Supply Voltage EV charging stations provide, so, for the sake of argument, let’s say it is 115 Vac. If the supply voltage is reasonably regulated, then it should stay pretty close to 115 Vac across a wide range of Current Draws. Since EV cars each carry their own individual Battery Charger, then, per Ohm’s Law, the Current Draw for a single EV car will be the impedance of the Battery Charger PLUS the impedance of the Battery. This impedance, considered with the 115 Vac supply voltage, will exclusively determine the Charging Wattage for a single EV car. If the transformer that delivers power to an EV charging station is selected properly, then the transformer should be able to deliver, per individual EV car, the same charging wattage to each car of a 4-car charging station, regardless of whether one car is charging or even 4 cars are simultaneously charging. You have to remember that, on the Electrical Grid, if the voltage “dips”, there are folks who monitor for this possibility, 24 hours a day, and accordingly adjust the amount of Electrical Power supplied to The Grid. With all this in mind, the whole problem comes down to merely selecting a sufficiently hefty Power Transformer at the EV charging station location. NOTE: From reading the other comments in this forum, I am guessing that Australia has a lot of trouble when it comes to maintaining sufficient power on the electrical grid. I say again, if the GRID can supply enough power, then the whole matter comes down to the selection of a sufficiently hefty power transformer AT the EV charging station location.
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