Redesigned linear generator set to make waves with wave energy converters

The re-designed concept - PowerPod II – is said to represent a major advance for Trident Energy’s WaveDrive project, which is developing a generic power take-off (PTO) system for use in wave energy converters (WECs). The new concept is similar in size to its predecessor but generates 50 per cent more electrical power on each stroke.

Furthermore, the device’s magnetic stack configuration has been optimised to allow the linear generator to operate horizontally, widening the available options for installation and operation. Improvements to the seal design for ‘in-sea’ operation, plus a more robust bearing solution, have been implemented to further increase reliability and reduce maintenance cycles.

According to Alan Mackay, project lead at 42 Technology, the work previously completed by Trident Energy focussed on developing and validating the performance of the generator technology. The original PowerPod was not designed for submersed operation so Trident Energy asked 42 Technology to marinise the basic sub-assemblies of the generator hardware and electrical infrastructure.