129 / 2025-05-19 17:08:41

Performance Evaluation of Regenerative Dampers in High-Speed Trains: Wheel Wear, Dynamics, and Energy Recovery

Regenerative Damper,High-Speed Train,Wheel Wear,Energy Recovery,Vehicle dynamics

Special Sessions > SSL 24 Annual TEPEN & Silk Road Collaboration Symposium

The study provides a quantitative evaluation of hydraulic-electric regenerative dampers (PSRDs) applied to high-speed train suspensions, focusing on their effects on wheel wear, profile optimisation, and vertical dynamics of carbody and bogie. Using a co-simulation framework combining MATLAB and SIMPACK, the investigation analysed vehicle-track interaction under various operational speeds up to 350 km/h. Results reveal that PSRDs achieve a measurable 12% reduction in wheel wear and ensure consistent profile interaction, minimising maintenance requirements. Time-domain analysis indicates a 25% decrease in peak vertical accelerations, while frequency-domain analysis demonstrates significant vibration attenuation within critical ranges of 1–20 Hz for carbody and 20–60 Hz for bogie. Furthermore, PSRDs generate an average power output of 21.72 W with an efficiency of 45.28%, contributing to onboard energy savings. The findings underline the dual advantages of enhanced dynamic performance and energy recovery, offering a pathway to sustainable advancements in high-speed rail systems.