Week-11 Challenge: Braking

Question 1:

I am EV Fasttrack batch 13 student

Question 2:

Explanation:

• Back emf of the motor is low hence input current is allowed to rise. It is mainly used to increase the kinetic energy of the load.
• After attaining the rated speed, back emf of the motor is high, therefore current cannot be increased beyond that limit.
• During braking operation, the direction of rotation of motor is in the reverse direction which limits its operation
• The desirable braking system of vehicle is that it must be stopped or even reduce the speed when brakes are applied.
• If the charging limit of the battery is less than the regenerative power requirement then mechanical brake
• Control strategies must be defined in such a way to ensure good braking performance
• During regeneration Electric driven brake combines both mechanical and electrical brake where at low-speed regeneration is used and at high-speed combination of mechanical and regeneration is used.

Electric braking system

• In an electrical braking the winding of the motor is used to produce a braking torque. A braking torque is developed during the braking operation.
• This braking torque opposes the motion of the rotating shaft. The electrical connection of the motor

Mechanical braking system

• Mechanical braking the frictional force between the rotating parts and the brake drums produces the braking.
• Brake linings and brake drums are required. Electrical or mechanical the braking of the driver should stop the motor at the point of time

Question 3:

Conclusion:

The models were explained