The Automotive Dc Motor suppliers tells you the principle of DC motor!
Working Principle of DC Motor
1, DC motor structure is divided into two parts: stator and rotor. Remember that both the stator and the rotor are made up of those parts. Note: Do not confuse the changer with the changer. Remember the role of both of them. The stator includes: main magnetic pole, machine base, changing pole, brush device, etc.. Rotor includes: armature core, armature winding, changer, shaft and fan.
2, DC motor excitation mode DC motor performance is closely related to its excitation mode, usually DC motor excitation mode there are four: DC excitation motor, DC parallel excitation motor, DC series excitation motor and DC reexcitation motor.
Master the characteristics of each of the four ways: DC excitation Motors: there is no connection between excitation winding and armature, and the excitation circuit is supplied by another DC power supply. Therefore, the excitation current is not affected by the electrode voltage or armature current. DC parallel excitation motor: The voltage at both ends of the parallel excitation winding is the voltage at both ends of the armature, but the excitation winding is formed by winding with fine wires. The number of turns is large, so it has a large resistance, making the excitation current passing through him smaller. DC series excitation motor: The excitation coil is connected in series with the armature, so the magnetic field in this motor changes significantly with the change of armature current. In order to prevent large losses and voltage drops in the excitation winding, the smaller the resistance of the excitation winding, the better. Therefore, the DC series excitation motor is usually wound with a thicker wire, and his number of turns is less. DC complex excitation motor: The flux of the motor is generated by the excitation current in two windings
