Meet our team

Researcher: Pantograph-catenary interaction, Hardware-in-the-Loop test device & Kinetic Energy Recovery Analysis Tool

Evert van Veldhuizen obtained his MSc degrees in both Mechanical Engineering as well as Sustainable Energy Technology following a dual master program at the University of Twente, Enschede, the Netherlands in 2015. Continuing his research that started during his master thesis he joined the Railway Engineering group at Delft University of Technology. Evert is investigating the pantograph-catenary interaction with special regard to the development of a hardware-in-the-loop pantograph test device (commonly referred to as catenary simulator). Besides he investigates the feasibility of recuperation technologies in the Netherlands for which he developes a software tool to analyze the energy reduction potentials (KERAT, Kinetic Energy Recovery Analysis Tool).

Pantograph-catenary interface

  • Pantograph-catenary dynamics and interaction
  • Modal analysis techniques, FEM techniques, experimental analysis
  • Real-time simulations of catenary systems
  • Hardware-in-the-Loop testing: Real-time simulation of a catenary system while analysing a real pantograph.
See also: Official Opening Catenary Simulator

Energy efficiency in railway systems

  • Energy flow simulations: Simulation of rolling stock behaviour and simulation of electrical current flow.
  • Recuperation technologies: The recovery and utilisation of braking energy and reducing the required amount of energy by wayside energy storage systems (ESS), on-board ESS, reversible substations.
  • Energy efficiency in railways: 3000V, energy-efficient driving.
See also: Kinetic Energy Recovery Analysis Tool

Catenary simulator (pantograph-catenary interaction)

A malfunctioning catenary systems leads to long and costly delays in the Dutch railway system. To improve the system a thorough understanding of its dynamic behaviour is crucial. A hardware-in-the-loop test device (or catenary simulator) is being developed which offers a versatile, cheap and easy to use tool to better analyse pantograph-catenary performance.

The catenary system is simulated in a software environment and the pantograph is physically present. A wheel rotates according to the forward speed of the train and can be moved in vertically direction to represent vibrations in the catenary system. The force between pantograph and wheel is measured and by a real-time algorithm the catenary's response is calculated and sent to the vertical motor.

The catenary simulator will allow for research on the prevention of catenary system malfunctions, such as catenary wire breaks, the development of extraordinary types of pantographs, the improvement and approval of current pantographs and the effects of increased speed trains. The established algorithm was especially created to allow for modelling of hard-points and optimizing the catenary design.

Expertise in Applied Mechanics and Sustainability and a personal interest in electronics, robotics and systems and control engineering.

Ir. Evert van Veldhuizen

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