Control system for novel mining lithium iron phosphate switched reluctance electric locomotive

Abstract

The invention discloses a control system for a novel mining lithium iron phosphate switched reluctance electric locomotive. The system comprises a battery pack management device, a switched reluctance electric locomotive control device and a charger which are connected with an explosion-proof plug respectively. The switched reluctance electric locomotive control device comprises a chopper controller, a photoelectric setter, a power conversion module, three Hall current sensors, six insulated gate bipolar transistors, a charging capacitor, a direct current contactor, a motor A-phase winding terminal block, a motor B-phase winding terminal block, a motor C-phase winding terminal block and two paths. The system has the advantages of high control accuracy and long equipment service life.

Description

technical field [0001] The invention relates to a mine electric locomotive control system. Background technique [0002] Mining electric locomotives are an important means of transportation in the coal mine industry, and are used in more and more coal mines. Currently, the commonly used DC motors used in electric locomotives include brushed DC motors, brushless DC motors, and AC motors. The disadvantages of brushed DC motors are: regular maintenance is required, and the commutation ring is replaced, which is costly and very inconvenient. The disadvantage of the brushless DC motor is that it needs to use power electronic devices to detect and control the change of the current direction, and the circuit structure is relatively complicated. The disadvantage of the AC motor is that it needs to invert the DC power provided by the battery pack, the control is more complicated, and the inverter structure adopted will inevitably consume electric energy, which reduces the efficiency...

AI Technical Summary

Problems solved by technology

The disadvantages of brushed DC motors are: regular maintenance is required, the commutation ring needs to be replaced, the cost is high and it is very inconvenient

The disadvantage of the brushless DC motor is that it needs to use power electronic devices to detect and control the change of the current direction, and the circuit structure is more complicated.

The disadvantage of the AC motor is that it needs to invert the DC power provided by the battery pack, the control is more complicated, and the inverter structure used will inevitably consume electric energy, which reduces the efficiency of the battery.

Moreover, the power batteries used are all lead-acid batteries. The cycle life of lead-acid batteries is poor, the volume is large and the weight is heavy, both lead and sulfuric acid pollute the environment, the charging cycle is long, and the cost is increasing year by year.

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