Armature reaction of cheap Brush DC motor
The influence of the DC motor armature magnetic potential on the air gap magnetic density distribution is called the armature reaction.
A DC motor is a rotating electrical machine that converts DC electrical energy into mechanical energy or converts mechanical energy into DC electrical energy. The armature response of a DC motor is described in detail below:
When the DC motor is under no-load, the magnetic flux density distribution generated by the excitation magnetic potential is a flat top wave. When the load is applied, the armature winding flows through the armature current Ia to generate the armature magnetic potential Fa, and the load is established together with the excitation magnetic potential Ff. The air gap synthetic magnetic density will inevitably change the distribution of the original air gap magnetic density.
The effect of the armature magnetic potential on the air gap magnetic density distribution is usually referred to as the armature reaction. When the armature magnetic potential acts alone, the armature magnetic field generated in the air gap of the motor, and then the armature magnetic field and the no-load air gap magnetic field are combined to obtain the load magnetic field. Compared with the no-load air gap magnetic field, the armature can be understood. The effect of the reaction.
