Week 3 Session 7
1.) Various types of Electric motor used in electric vehicles:
- DC series motor.
- Brushlesss DC Motor.
- Permanent Magnet Synchronous Motor(PMSM).
- Switched Reluctance Motor(SRM).
1.DC series motor:
High starting torque caqoapavbility of the DC series motor makes it a suitable option for traction application. It was themost widely used motor for traction application.
advantage: this motor are easy speed control and it can also withstand a suddern increase in load. All these characteristics make it an ideal traction motor.
disadvantage: high maintaince due to brushes and commutators. these motors are used in Indian Railways.
2.Brushless DC motor:
BLDC motor we use electronic commutation which will provide a more will be the provider a more control the
advantage:high starting torque.,high efficiency,lowmaintance
Disadvantage:requires high maintaince,brushless, commutator.
3.Permanent Magnet synchronous Motor:
This motor is also similar to BLDC motors these motorwill alsohave traction. characteristucs likely high power density The difference is that PMSM has sinusoidal place back emf whereas BLDChas the high power range.
Most of the automotive manufacture use PMSM motor for hybrid and electrical vehicle.
4.Three phase AC Induction motors: The induction motors do not have a high starting torque like dc series motor under fixedvoltage and fixed frequency operation. but this calculation.
Induction motor can be designed up to an efficiency of 92-95%.
the drawbacks of an inducdtion motor is that complex intervert it require complex inverter circuit and control difficuluyof the motor isdifficcul