有轨电车地面充电装置内循环散热系统优化方案
陈修强
Optimization Scheme of Internal Circulating Heat Dissipation System for Tram Ground Charging Device
CHEN Xiuqiang
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作者信息:中车青岛四方机车车辆股份有限公司， 266111， 青岛
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Affiliation:CRRC Qingdao Sifang Co., Ltd., 266111, Qingdao, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.02.037
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中图分类号/CLCN:U482.1
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栏目/Col:应用技术
摘要:
［目的］为解决现有有轨电车地面充电装置存在外壳防护性能不稳定、散热系统装置复杂、散热效率低等问题，设计了一种有轨电车地面充电装置内循环散热系统。［方法］介绍了地面充电装置的组成及散热原理，分析了其散热效率低的原因；针对密闭柜体整体内循环的散热系统，介绍了内循环散热系统优化方案，利用FLOTHERM仿真软件对原方案与优化方案散热系统的风速及温升情况进行对比，并进行了试验验证。［结果及结论］基于空调冷却整体内循环的散热系统无法有效解决大功率高热损耗集中发热器件的散热问题，这与制冷系统的制冷量大小无关，而与散热系统的风道回路有关。所提内循环散热系统优化方案在空调出风口、电抗器及空调回风口之间形成闭环风道回路，大幅降低了大功率集中发热器件的温升，有效提升了散热系统的散热性能，优化后充电装置中的电抗器温升降低约20.1%。所提优化方案能够满足内循环散热系统的温升要求。
Abstracts:
［Objective］ To solve the problems of unstable shell protection performance, complex HD (heat dissipation) system configuration, and low HD efficiency existing in current tram ground charging devices, a scheme of ICHD (internal circulating head dissipation) system for tram ground charging device is designed. ［Method］ The composition and HD principle of the ground charging device are introduced, and the reasons for the low HD efficiency are analyzed. In view of the overall ICHD system of the enclosed cabinet, an ICHD system optimization scheme is proposed. The FLOTHERM simulation software is utilized to compare the airflow velocity and temperature rise between the original and optimized schemes, and experimental verification is conducted. ［Result & Conclusion］ It is found that the overall ICHD system based on air-conditioning cooling is unable to solve the HD issues of high-power and high-heat loss centralized heating devices. This inefficiency is not related to the cooling capacity of the refrigeration system but rather to the airflow circuit of the HD system. The proposed optimization scheme forms a closed-loop airflow circuit between the air-conditioning airflow outlet, inductor and air-conditioning return air vent, significantly reducing the temperature rise of high-power centralized heating devices. This effectively enhances the HD performance of the HD system, resulting in a temperature rise reduction of approximately 20.1% in the inductor of the charging device after optimization. The proposed optimization scheme satisfies the temperature rise requirements of the ICHD system.
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