Energy storage device and method for large-tonnage hybrid power electric locomotive

Abstract

The invention relates to an energy storage device and method for a large-tonnage hybrid power electric locomotive. The energy storage device comprises a traction accumulator (1), a protection resistor(2), a supporting capacitor (3), an inverter (4), a traction motor (5), a filter inductor (6), a high-end capacitor (7), a two-way DC / DC converter (8), an energy storage inductor (9) and a super-capacitor (10). The traction accumulator (1) and the super-capacitor (10) constitute a hybrid power source system, the advantages of high energy density of the accumulator and the high power density of the super-capacitor can be given to play simultaneously, the using quantity of vehicle-mounted accumulators is decreased effectively, the adaptability of an electric power system to the instant large-power load is improved, the energy resource using efficiency of the electric power system is improved, and the maintenance cost of the large-tonnage electric locomotive is reduced effectively. Through the scheme, the important strategic and practical significance in improving the power performance and economic performance of the large-tonnage electric locomotive, expanding the new market with the high additional value and conforming to the energy-saving and emission-reduction national policy is achieved.

Description

technical field [0001] The invention relates to the field of design of energy storage devices for large-tonnage electric locomotives, in particular to performance evaluation technology for locomotive energy storage systems, and in particular to an energy storage device and method for large-tonnage hybrid electric locomotives. Background technique [0002] Large-tonnage power electric locomotives have many applications in mines and underground mines. The traditional energy supply system mainly uses batteries as the energy supply system. However, due to the low power density of the battery, in order to provide the instantaneous high power demand of the electric locomotive under the working conditions of starting, climbing, and accelerating, an additional battery pack is required to meet the power load demand, resulting in the capacity of the on-board battery exceeding that of the electric locomotive. The actual energy demand increases the weight and volume of the battery pack ...

AI Technical Summary

Problems solved by technology

For the design of energy storage devices for large-tonnage hybrid electric locomotives, there is currently no perfect technical solution

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