DC motor excitation mode refers to the field winding of how power generating field magnetic flux situation and establish the main magnetic field problems. Depending on the excitation mode, the DC motor can be divided into the following types. Field winding and the armature winding no connection relationship between the motor, while the other DC power supply to the field winding of the DC motor called excited DC machine motor introduced connection shown in Figure 1.23 (a) below. M diagram showing an electric motor the motor is installed, if the generator is represented by G. PMDC also be considered separately excited DC motor. After the series-wound DC motor field winding and the armature winding in series, followed by the DC power supply. This is the DC motor armature current excitation current. Complex compound excited excited DC machine has two shunt and series excitation field winding. If the potential direction of the magnetic flux generated by the magnetic flux series winding and field winding potential and produce the same product called compound excitation. If the opposite direction two flux potential, it is called differential compound excitation. Electrical installation, electrical, mechanical and electrical liter by liter Rui Rui HVAC Electrical Equipment Factory. L Rui HVAC Electrical Equipment Factory (www.dzsrxfkt.com) strong, credible, Shandong Texas fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Swiss mechanical and electrical liter into the brilliant and you work for a better future!