Energy-regenerative semiactive lateral suspension control in high-speed train using electromagnetic damper cum energy harvester

Yingyu Hua, Qinlin Cai, Songye Zhu

Research output: Journal article publicationJournal articleAcademic researchpeer-review


With the increasing speeds of high-speed trains (HSTs), advanced suspension structure designs are necessary to guarantee riding comfort and energy efficiency. In this study, a novel energy-regenerative semiactive secondary suspension system of HSTs and the corresponding control strategy, which have not been reported in the literature, were developed using the emerging electromagnetic damper cum energy harvester (EMDEH) with both vibration control and energy harvesting functions. The developed EMDEH can provide continuously tunable damping coefficients by semiactively controlling the duty cycle of an energy harvesting circuit. The mechanical behavior and energy performance of a full-scale EMDEH prototype were experimentally characterized via cyclic tests. An EMDEH simulation model was developed and verified through comparison with experimental results. A semiactive control strategy was designed to track the target force generated by a Linear-Quadratic-Gaussian (LQG) controller. Numerical simulations revealed that the semiactive EMDEH (SEMDEH) could more effectively reduce the vibrations of the car body than the traditional passive dampers and fixed-duty-cycle EMDEH (FEMDEH) at train speeds of 200-350 km/h. Moreover, although the FEMDEH generated a greater power than the SEMDEH under the aforementioned train speeds, the SEMDEH could still generate powers of 25.89-153.19 W.

Original languageEnglish
JournalIEEE Transactions on Vehicular Technology
Publication statusAccepted/In press - 2022


  • Automobiles
  • Buck-boost converter
  • Damping
  • electromagnetic damper
  • Electromagnetics
  • energy harvester
  • Energy harvesting
  • Force
  • Resistance
  • Shock absorbers
  • suspension control

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

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