This is key, You NEED emf (motor produced voltage) higher then the battery to push current back to the battery. Current always flows from low to you, you PWM it to control how much current is allowed through.


Funny but it seems you clearly lack knowledge of the techniques that allow a BLDC ...

There's no field coil in a Tesla. ....


Let me see if I understand your analogy. Let's connect your pm drill to a constant RPM source, so the drill is mechanically driven by a larger motor at a constant RPM. The drill's battery voltage is at 480V, but the drill is generating 580V even while ...

@Johu and @Zieg thank you guys , what I understood from your answers it is possible but not practical enough , this makes sense. I was thinking if there was any vin code related encryption or some security measures...

Thank you , for the regen voltage it can be really high or lower than battery's current voltage level so how does motor's inverter works as DC DC converter at all? Let's say battery is at 380v and regen generated 360v (open or closed circuit is also depends right?) for DC DC converter I can get the ...

Hi thank you but , as I I dictated I know those links but couldnt see or understand why do we need those cards ?can't we just communicate directly with Tesla original boards ? Could you please indicate explicitly where does it mentions the rationale behind these cards ?

Hi everyone,

I understand how regenerative braking generally works, but I'm seeking more detailed information on the specific processes involved.

Are both motors working as generators for Model Y?
How is the battery charging controlled during this process?
Does this conversion and control happen ...

Hi everyone,

I'm trying to understand the necessity of using an open source control board for Tesla onboard chargers.

Why do we need an open source control board for these chargers?
How is this open source board connected to the original onboard charger?
Is there a reason we can't directly ...