Week 3 Session 7

Brushed DC motors

• Simple and cost-effective to manufacture and maintain.
• High starting torque, which is useful for accelerating vehicles from a stop.
• Good speed control using voltage regulation or pulse-width modulation.

• High maintenance due to brushes and commutator.
• Shorter lifespan than brushless motors.
• Lower efficiency at high speeds.

Brushless DC (BLDC) motors

• High efficiency and reliability due to no brushes or commutator.
• Low maintenance.
• Good power-to-weight ratio.
• Good speed control and precise torque control.

• More complex than brushed DC motors.
• More expensive to manufacture and repair.
• Requires more sophisticated motor control algorithms.

AC induction motors

• High efficiency and reliability.
• No brushes or commutator to wear out.
• Better performance at high speeds.
• Good regenerative braking capabilities.

• More complex than DC motors.
• More expensive to manufacture and repair.
• Lower torque at low speeds.
• Requires sophisticated motor control algorithms.