The performance of DC motor and its excitation mode are closely related, there are usually 4 DC motor excitation mode: he motor, DC shunt motor, DC series motor and DC DC compound motor. Grasp the characteristics of the 4 ways: 1 DC excitation motor: the excitation winding and armature without electricity, the excitation circuit is supplied by another DC power supply. Therefore, the excitation current is not affected by armature voltage or armature current. 2: DC shunt motor circuit in parallel, shunt and shunt winding voltage is the voltage at both ends of the armature, but the excitation winding with the thin wire wound, it turns a lot, so it has great resistance, so that by his small excitation current. 3 DC series motor: current series, voltage, excitation winding is connected with the armature, so the motor magnetic field with the armature current changes have significant changes. In order to avoid the large loss and voltage drop in the excitation winding, the smaller the resistance of the excitation winding is, the better the DC series motor is usually made up of a thick conductor. 4 DC compound motor: the motor flux generated by the excitation current in the two windings. Through the above DC motor performance of a simple introduction to understand the details of each process needs to be treated seriously, can not be ignored. Let us know more about DC motor related issues, please pay attention to this site.
