Four excitation methods for electric vehicle motors

The excitation of an electric vehicle motor is to control the stator voltage to cause a change in the magnetic field, thereby changing the speed of the motor, that is, a key factor that can affect or even determine the efficiency of the motor. Therefore, when purchasing a motor, you need to refer to the excitation mode of the motor, so that you can better purchase the motor that meets your needs. Then the following small series will introduce, what are the four major excitation methods of the motor.

 

1, he excited DC motor

 

The excitation winding has no connection relationship with the armature winding, and the electric vehicle motor that is powered by the other DC power supply to the excitation winding is called the other excitation. The permanent magnet electric motor can also be regarded as the excitation or self-excitation, which is generally called the excitation method forever. magnetic.

 

2, shunt DC motor

 

The excitation winding of the electric vehicle motor is connected in parallel with the armature winding. As the shunt motor, the terminal voltage from the motor itself supplies power to the field winding. As the shunt motor, the field winding and the armature share the same power source. In terms of performance, it is the same as his excitation motor.

 

3, series excitation DC motor

 

The excitation winding of the series-excited electric vehicle motor is connected in series with the armature winding, and then connected to the DC power supply.

 

4, compound excitation DC motor

 

The compound excitation motor has two excitation windings, which are shunt and series excitation. If the magnetomotive force generated by the series winding is the same as the direction of the magnetomotive force generated by the shunt winding, it is called product recombination. If the two magnetomotive forces are opposite in direction, they are called differential complex excitation.

 

Therefore, when purchasing an electric vehicle motor, it is not only necessary to look at the quality and efficiency of the motor, but also to select an excitation method that is more suitable for your needs, so that the power of the motor can be fully and stably used during use. . At the same time, Xiaobian should remind everyone that if you want to buy a motor with good quality and suitable for working conditions, you must know the information of the motor in many aspects.