Contactless Traction Power Supply System Design and Efficiency Optimization of Battery Energy Storage Rail Trains
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 4
Abstract
Objective Contactless power supply method, leveraging the advantages of no direct electrical contact between the primary and secondary side coils, is currently being explored in the rail transit industry. The high-power, high-frequency application scenarios pose challenges in the design of the contactless traction power supply system, component selection, and coupling mechanism design. It requires optimization of the design scheme and system efficiency. Method For rail transit application scenarios, the system structure of a contactless traction power supply system based on the LCC-S (inductance-capacitor-capacitor-series) compensation topology is introduced. A 250 kW contactless power supply system is designed, utilizing double D-shaped coils for the primary track coils and secondary receiving coils. The impact of factors such as mutual inductance of coupling coils and losses in magnetic materials on system efficiency is studied. System circuit model and coupling coil model are established. The system is simulated based on the model, and parameters for the magnetic core thickness in different regions of the secondary coils are optimized. An experimental platform for contactless traction power supply system is built, and tests are conducted at a power level of 250 kW to validate the effectiveness of the design optimization method. Result & Conclusion The simulation and experimental results confirm the effectiveness and feasibility of the design optimization method. Optimization of the core layout ensures coil mutual inductance and reduces core losses. The system demonstrates the capability of delivering a rated output power of 250 kW. Under air gap heights of 70 mm and 80 mm, the static and dynamic operating efficiencies of the system are both greater than 90%.
Authors and Affiliations
Peng YANG, Meizheng LI, Jingdong CHEN, Yupeng TIAN, Dongyi LI
Keywords
Related Articles
- EP ID EP734161
- DOI 10.16037/j.1007-869x.2024.04.015
- Views 4
- Downloads 0
Selection and Heat Dissipation Analysis of Regenerative Braking Energy Absorption Device in Urban Rail Transit Depot
[Objective] The regenerative braking energy absorption resistance in urban rail transit depot has a large heat dissipation. In order to effectively solve the problem, it is necessary to select the right type of regenerat...
Analysis and Solution Schemes for Interference on Metro Signaling System Axle Counting Equipment
[Objective] During the system commissioning, train debugging and trial operation on Chengdu Metro Line 18, the axle counting equipment exhibits AIO (abnormal interference and occupation) due to various disturbances in di...
Establishment of Digitalized Intelligent Construction-site Comprehensive Monitoring System
[Objective] To address the issues of delayed, ineffective communication of information and declining instructions among various stakeholders during metro project construction, it is necessary to improve data integration,...
Shanghai Rail Transit Integration Development Strategy Based on Yangtze River Delta Integration
[Objective] With the deepening integration of regional development, it is essential to enhance the service level of urban rail transit, alleviate transportation pressure, and integrate regional resources. To achieve inte...
Prediction of Excavation Disturbance and Required Support Force for Tunnel beneath Existing Structural Foundations
[Objective] It is inevitable that construction of new tunnels or other underground engineering projects will pass through some building structures, causing disturbances to the existing structural foundations. Therefore,...