Fuel cell hybrid power system performance test system and test method

Abstract

The invention discloses a fuel cell hybrid power system performance test system. The performance test system comprises a voltage regulation unit, an electronic load, a data processing unit and a power distribution unit; the voltage regulating unit and the electronic load are connected with the direct-current bus; the power distribution unit is connected with the electronic load and is used for adjusting the load output by the electronic load; the electronic load is used for simulating vehicle conditions; under the working condition of vehicle power output, the voltage regulating unit is used for regulating the output voltage to simulate the influence of the energy storage unit on the bus voltage; under the braking energy recovery working condition, the voltage regulating unit is used for changing the bus voltage to simulate the fluctuation of the bus voltage caused by braking energy and power feedback; and the data processing unit is connected with the fuel cell, the voltage regulating unit and the electronic load respectively and is used for acquiring data of the fuel cell, the voltage regulating unit and the electronic load so as to perform performance evaluation and matching test. The system has the advantages of low test cost, good test comprehensiveness, high test efficiency and the like.

Description

technical field

[0001] The invention mainly relates to the technical field of rail transit new energy power systems, and in particular to a fuel cell hybrid system performance test system and test method. Background technique

[0002] With the continuous development of new energy technologies, hydrogen fuel cells are gradually entering the field of public transportation due to their green and energy-saving features. There have been some practical applications in the fields of new energy vehicles, ships, and rail transportation at home and abroad. In the scenario where fuel cells are used as power systems, due to the inherent characteristics of fuel cells with slow output response, a single fuel cell power system cannot meet the power requirements of rapid changes in vehicle status (starting, acceleration, deceleration, etc.). At the same time, the output power of fuel cells used in vehicles is relatively large. Considering the cost, volume, quality and life of fuel cells com...

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