Electricity Principle of Mine Electric Locomotive

Mine electric locomotive is made of the electrical system and mechanical structure. The electrical system consists of a pantograph, a main circuit breaker, a large capacity traction transformer, four to six traction motors, two sets of driver control devices, a converter consisting of a thyristor or an off thyristor, and a power range Of the auxiliary motor and a large number of electrical appliances, electronic devices. In addition, there are communication equipment, instruments, some electric locomotives are also equipped with computer control devices. The traction motor is mounted on the axle and the bogie, and the driving force is transmitted through the gear. Pantograph installed in the roof, the rest of the electrical equipment in the car body. Mechanical structure is mainly composed of body, frame and bogie. The bogie is mounted on the bogie through the frame, and the weight of the locomotive is evenly distributed to the wheelset by means of the elastic supporting device and the axle box. China electric locomotive load per axle of 23t. The electric energy used in mine electric locomotive is obtained from the catenary, and then the pantograph is installed in the roof of the car into the body, and then through the main circuit breaker into the traction transformer primary side, step down input special form of rectifier (converter) And the reactor, so that the voltage can be smoothly regulated DC current, the supply traction motor. By adjusting the DC output voltage of the rectifier, that is, the terminal voltage of the motor and the excitation current of the motor, the starting and speed regulation of the locomotive are realized.