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D.A.S.
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You control the de-acceleration the same way by sensing current according to demand using PWM but boosting the voltage as speed reduces with a DC converter.

Friction braking typically is about 5-10x faster than acceleration even with all wheel drive so regenerative braking can do no better.

If cycling from full e-brake to full acceleration , current is typically 5x current at full power so extra cooling is needed. Adding a power dump resistor reduces current and e-braking effect.

Regenerative charging must boost voltage as speed drops and is more complicated than simply reversing the direction of bridge current because V is proportionproportional to RPM with no load which thus reduces the. Thus as speed reduces, so thetoo does e-braking effect slows downreduce . The braking reduces, just as acceleration reduces towards full speed.

Of course in theory you could use degenerative braking by reverse current but that is not practical.

Also if the vehicle kinetic energy is recovered it is only to assist the primary friction brakes and a dead time must be designed to prevent shoot-thru.

You control the de-acceleration the same way by sensing current according to demand using PWM but boosting the voltage as speed reduces with a DC converter.

Friction braking typically is about 5-10x faster than acceleration even with all wheel drive so regenerative braking can do no better.

If cycling from full e-brake to full acceleration , current is typically 5x current at full power so extra cooling is needed. Adding a power dump resistor reduces current and e-braking effect.

Regenerative charging must boost voltage as speed drops and is more complicated than simply reversing the direction of bridge current because V is proportion to RPM with no load which thus reduces the speed so the e-braking effect slows down just as acceleration reduces towards full speed.

You control the de-acceleration the same way by sensing current according to demand using PWM but boosting the voltage as speed reduces with a DC converter.

Friction braking typically is about 5-10x faster than acceleration even with all wheel drive so regenerative braking can do no better.

If cycling from full e-brake to full acceleration , current is typically 5x current at full power so extra cooling is needed. Adding a power dump resistor reduces current and e-braking effect.

Regenerative charging must boost voltage as speed drops and is more complicated than simply reversing the direction of bridge current because V is proportional to RPM with no load. Thus as speed reduces, so too does e-braking effect reduce . The braking reduces, just as acceleration reduces towards full speed.

Of course in theory you could use degenerative braking by reverse current but that is not practical.

Also if the vehicle kinetic energy is recovered it is only to assist the primary friction brakes and a dead time must be designed to prevent shoot-thru.

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D.A.S.
  • 148k
  • 3
  • 56
  • 190

You control the de-acceleration the same way by sensing current according to demand using PWM but boosting the voltage as speed reduces with a DC converter. Friction

Friction braking typically is about 5-10x faster than acceleration even with all wheel drive so regenerative braking can do no better.

If cycling from full e-brake to full acceleration , current is typically 5x current at full power so extra cooling is needed. Adding a power dump resistor reduces current and e-braking effect.

Regenerative charging must boost voltage as speed drops and is more complicated than simply reversing the direction of bridge current because V is proportion to RPM with no load which thus reduces the speed so the e-braking effect slows down just as acceleration reduces towards full speed.

You control the de-acceleration the same way by sensing current according to demand using PWM. Friction braking typically is about 5-10x faster than acceleration even with all wheel drive so regenerative braking can do no better.

You control the de-acceleration the same way by sensing current according to demand using PWM but boosting the voltage as speed reduces with a DC converter.

Friction braking typically is about 5-10x faster than acceleration even with all wheel drive so regenerative braking can do no better.

If cycling from full e-brake to full acceleration , current is typically 5x current at full power so extra cooling is needed. Adding a power dump resistor reduces current and e-braking effect.

Regenerative charging must boost voltage as speed drops and is more complicated than simply reversing the direction of bridge current because V is proportion to RPM with no load which thus reduces the speed so the e-braking effect slows down just as acceleration reduces towards full speed.

Source Link
D.A.S.
  • 148k
  • 3
  • 56
  • 190

You control the de-acceleration the same way by sensing current according to demand using PWM. Friction braking typically is about 5-10x faster than acceleration even with all wheel drive so regenerative braking can do no better.