Power control system of new energy electric wheel mining dump truck

Abstract

The invention relates to an electric wheel mining dump truck, in particular to a power control system of a new energy electric wheel mining dump truck. The defects and problems existing in an electricwheel mining dump truck which adopts a diesel generator set to provide power are solved. The power control system of the new energy electric wheel mining dump truck comprises a lithium battery, a hydrogen fuel cell engine, a direct-current bus, a first DC / DC triple chopper, a second DC / DC triple chopper and a third DC / DC triple chopper, wherein the lithium battery and the hydrogen fuel cell engine are respectively connected in parallel with the direct-current bus; the first DC / DC triple chopper takes power from the direct-current bus and supplies power to an armature winding of the first DC motor; the second DC / DC triple chopper takes power from the direct-current bus and supplies power to the armature winding of the second DC motor, and the third DC / DC triple chopper takes power from thedirect-current bus and supplies power to the excitation windings of the first DC motor and the second DC motor. The power control system adopts a hydrogen fuel engine and lithium battery hybrid energy system to replace the diesel generator set to provide power.

Description

technical field [0001] The invention relates to an electric wheel mining dump truck, in particular to a new energy electric wheel mining dump truck power control system. Background technique [0002] The electric wheel mining dump truck is an off-highway truck used for mine transportation, the smallest is 50T, the largest is 400T, and it was manufactured by GE in the United States and Komatsu in Japan in the last century. The electric wheel mining dump truck is driven by two axles, which are respectively driven by two DC motors. At that time, China imported a large number of vehicles for open-pit coal mines and iron ore copper mines. It was only in this century that domestic repairs and new manufactures began, but they were all driven by AC-DC or AC-DC-AC systems with diesel engines and generators. This kind of drive system has poor characteristics when the diesel engine is at low speed, large vibration and noise, many faults of diesel generator sets, complex system, poor ...

AI Technical Summary

Problems solved by technology

This kind of drive system has poor characteristics when the diesel engine is at low speed, the vibration and noise are large, the diesel generator set has many faults, the system is complex, the overall reliability is poor, the fuel consumption is large, the exhaust emission pollutes the environment, and the energy consumption is high.

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