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Originally Posted by Serum
And this is correct.
@ artur; why does the controller need to know the possition of the rotor? all three phases can be shorted with PWM instead of going the complex route of following the stator.
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To be in sync with rectification provided by diodes, otherwise there will be less energy put back to battery.
To charge the battery you need current. Higher current means higher energy density, in battery system means more energy being put back in battery in short time.
Now when you discharge battery under normal driving (acceleration...) battery voltage goes down based on voltage drop associated with internal resistance. Internal resistance related to battery chemistry and driven how fast this chemistry goes. This mean that for a short period of time their would be a nice current going to the battery via diodes (or FET's if controlled, very efficient) due to the earlier voltage drop on battery and it's time period will be driven by battery recovery time and vehicle dynamics (it can slow down faster).
As simple as charging battery with 100C for a 0.1 sec...
That's also explains why nice cap is always helps, but that is different story on parallel thread :)
Schulze's comment about loose contact business very well explained in App. Note I mentioned earlier, but as for braking I haven't check their soft yet if their controller does that or its given for free with built-in diodes.
Hybrid Mode
