Design and Optimization Experimental Verification of Heat Dissipation System for High-power High-frequency Auxiliary Converters in Metro Trains
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 1
Abstract
[Objective] With the high-degree integration of high-power auxiliary converters in metro trains, the demand for heat dissipation is rising significantly, necessitating the proposal of a new heat dissipation system design scheme. [Method] Through a series of forward designs involving power loss calculation, fan type selection, and heat dissipation duct layout, the rationality of the thermal design is validated by combining the simulation. [Result & Conclusion] Simulation results indicate that under the fault condition of a single auxiliary converter, uneven flow distribution in the intermediate chamber leads to elevated transformer temperature, posing a risk of thermal inefficiency. On this basis, the duct structure is optimized, and the simulation confirms a more uniform flow distribution in the duct, and a significant reduction in transformer temperature rise within the permissible operating temperature range, indicating that the optimized heat dissipation system meets application requirements. To validate the theoretical design, a prototype temperature rise test is conducted to compare the simulation and prototype test results. Under single and dual full-load working conditions, the temperature rise of key components and the temperature difference compared to the simulation are controlled within 5°C, both within the specified application range. This indicates the rationality of the duct heat dissipation system design. A new converter heat dissipation system and cabinet structure are proposed through forward optimization design, and prototype testing validates the effectiveness of the simulation analysis. This approach substantially shortens the prototype development cycle, enhances market responsiveness, and provides a methodology and direction for the design and optimization of high-power high-frequency auxiliary converters.
Authors and Affiliations
Tao YI, Qingliang ZHAO, Bilong BIE, Haitao LIU, Peinan RAO, Shuai ZHOU, Yunhan ZHANG, Sen SONG, Zhidong GENG, Hao YANG
Keywords
Related Articles
- EP ID EP727710
- DOI 10.16037/j.1007-869x.2024.01.027
- Views 39
- Downloads 0
Construction Scheme with Non-stop Aviation for Large-diameter Shield Tunnel Crossing Airport Flight Zone in Karst Area
[Objective] To achieve non-stop aviation during the construction of a large-diameter shield tunnel crossing the airport flight zone in karst area, it is essential to study the construction scheme with non-stop aviation....
Peacetime and Wartime Integrated Protection Design Scheme for Piston-action Ventilation Shaft in Metro Station
Objective As the designers' understanding of the wartime protection function and transportation function of the metro stations deviates from the current specification, the estimated indispensable time in the design for t...
Reactive Power Compensation Scheme for Urban Rail Power Supply System Considering Main Substation Resource Sharing
[Objective] The resource sharing among main substations in urban rail transit power supply system can lead to significant cost savings. In this context, it is essential to investigate reactive power compensation schemes...
Empirical Analysis on Concentration Degree of Inbound and Outbound Passenger Volume of Guangzhou Urban Rail Transit
Objective Problems in some urban rail transit lines, such as unreasonable directions, station distribution, and transfer station layouts lead to the phenomenon of some high passenger flow stations and extremely low passe...
Construction of Urban Rail Transit Line Spatial Digital Base Using 3D Laser Point Cloud Technology
Objective In order to facilitate the digital transformation and high-quality development of Shanghai rail transit, it is imperative to construct a digital twin model and create a unified, authoritative, and precise spati...