Regenerative Braking for a Vehicle

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SUMMARY

The discussion focuses on calculating the driven load inertia necessary for determining total system inertia in regenerative braking systems. The motor rotor inertia is specified as 2.872 lb/ft², and the gear ratio is 52:1. The equation used is WK2s = WK2m + (WK2L / GR2), where WK2s represents total system inertia, WK2m is motor rotor inertia, WK2L is driven load inertia, and GR2 is the gear ratio. Participants seek clarification on how to derive the driven load inertia for accurate calculations.

PREREQUISITES
  • Understanding of rotational inertia concepts
  • Familiarity with gear ratios and their implications in mechanical systems
  • Basic knowledge of regenerative braking systems
  • Ability to interpret equations related to inertia calculations
NEXT STEPS
  • Research methods for calculating driven load inertia in mechanical systems
  • Explore the application of regenerative braking in electric vehicles
  • Learn about the significance of gear ratios in torque and speed calculations
  • Investigate online tools for calculating rotational inertia, such as hpwizard.com
USEFUL FOR

Mechanical engineers, automotive engineers, and students studying vehicle dynamics or regenerative braking systems will benefit from this discussion.

cahillep
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Hey, how do you calculate the driven load inertia that you need to calculate the total system inertia. I know the motor rotor inertia is 2.872 lb/ft^2 and the Gear Ratio is 52:1 but I can't seem to figure out how to get the driven load inertia for the equation:

WK2s = WK2m + (WK2L / GR2)

Where:
WK2s = total system inertia
WK2m = motor rotor inertia
WK2L = driven load inertia
GR2 = gear ratio (defined as motor revolutions/driven load
revolutions)

Can anyone shed some light on this for me? It would be greatly appreciated.
 
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I'm not sure if this is what you mean, but does http://hpwizard.com/rotational-inertia.html" help?
 
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