Linear generator technologies for wave energy conversion applications: A review: 2018 53rd International Universities Power Engineering Conference (UPEC)

A. A. Faiad, Azmy Gowaid

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Compared to other renewable technologies, wave energy is more persistent, predictable, and concentrated. This review focuses on the deployment of linear generators, as they proved to be well suited for wave energy conversion. Unlike traditional rotary generators, linear generators can operate at variable speeds of waves and consequently the translator's motion varies in the same direction. Therefore, the generated voltage and current vary in both frequency and amplitude and also the phase sequence keeps alternating, which leads to a significantly higher peak-to- average power ratio. Different types of wave energy converters are briefly previewed and categorized according to the working principle of the primary capture systems and secondary power take-off systems. Then linear generators are compared in terms of general system configuration, flux path and core type. The comparison is followed by presenting state-of-the-art linear generator topologies with focus on high-temperature superconducting linear machines.
Original languageEnglish
Title of host publication2018 53rd International Universities Power Engineering Conference (UPEC)
Number of pages6
Publication statusPublished - 13 Dec 2018



  • linear motors
  • permanent magnet generators
  • wave power generation
  • linear generator technologies
  • wave energy conversion applications
  • generated voltage
  • wave energy converters
  • high-temperature superconducting linear machines
  • linear generator topologies
  • variable wave speed
  • translator motion variation
  • generated current
  • peak-to- average power ratio
  • primary capture systems
  • secondary power take-off systems
  • Generators
  • Turbines
  • Topology
  • Stator windings
  • Force
  • Hydraulic systems
  • linear generators
  • permanent magnet
  • direct drive
  • efficiency

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