Dynamics of the N-pendulum and its application to a wave energy converter concept

Daniil Yurchenko, Panagiotis Alevras*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


This paper considers a design of an N-pendulum, which represents a special case of a physical pendulum. The design of the N-pendulum not only allows uncoupling the natural frequency of the pendulum from its length, but also provides easy control of the frequency and torque. The proposed design is stimulated by the idea of developing a wave power take-off system based on the parametric pendulum. Different designs are being considered and their dynamic characteristics are investigated with respect to the feasibility of such an application. Due to the observed low frequency of ocean waves, the size of a heaving simple pendulum should span along unrealistic sizes in order to be parametrically resonant. Thus, the N-pendulum is considered and the configurations that would fulfill these frequency requirements are sought. Last, numerical simulation is conducted for an under development experimental rig aiming to test the functionality of the concept, modelling the response of the N-pendulum.

Original languageEnglish
Pages (from-to)290-299
Number of pages10
JournalInternational Journal of Dynamics and Control
Issue number4
Early online date29 Oct 2013
Publication statusPublished - 1 Dec 2013


  • Heaving motion
  • Parametric pendulum
  • Parametric resonance
  • Power take-off
  • Tri-pendulum
  • Wave energy

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Control and Optimization
  • Modelling and Simulation


Dive into the research topics of 'Dynamics of the N-pendulum and its application to a wave energy converter concept'. Together they form a unique fingerprint.

Cite this