bioWAVE concept

The bioWAVE is a submerged structure that sways naturally back and forth beneath ocean swell waves. Energy absorbed from the waves is converted to electricity by an onboard self-contained O-Drive module. The electricity is delivered to onshore consumers by a subsea cable.

Each bioWAVE is several stories high, and can produce up to 250kW of steady electrical power, roughly equivalent to about 200 houses. Electricity supplied from bioWAVE is expected to be more consistent than supply from wind or solar power, and could be the considered near-baseload in many locations.

bioWAVE is protected by patents in all potential markets worldwide.

 

How it works

The bioWAVE is mounted on the seafloor, with a pivot axis near the bottom. Each passing wave imparts large hydrodynamic forces on the air-filled cylindrical structures, thus harnessing wave energy at and below the surface. As the ocean water accelerates and decelerates around the cylinders with each wave, the structure responds by swaying in the same manner as a pendulum, resulting in a large, but varying and reversing, torque (or moment) about the pivot axis.  Hydraulic cylinders, mounted near the pivot, pressurise fluid within an enclosed hydraulic system. The high-pressure fluid is supplied to an O-Drive module, which converts the irregular hydraulic energy into continuous grid-quality AC electricity. Power is then delivered to shore by a subsea cable.

bioWAVE | BPS

Advantages

The bioWAVE offers several advantages over other wave energy designs:

  • Modularity - designed for ease of installation and low-cost maintenance;
  • Performance - the "pitching point-absorber" captures more energy than heaving systems, and allows for power production on both forward and back strokes;
  • Efficiency - Onboard conversion to high-voltage AC power;
  • Survivability - Automatic "lay-down" mode, designed to protect equipment during extreme wave events and storms.

The energy capture and conversion process for bioWAVE has been confirmed through peer reviewed scientific research, extensive device testing at model-scale, and by measured results from dry-tests on full-scale grid-connected systems.  

New bioWAVE designs are being developed for ease of transport and assembly, with the aim of delivering installations with a competitive Levelised Cost of Energy (LCOE). When combined with O-Drive, the bioWAVE can be readily integrated into off-grid, micro-grid, and utility-scale renewable energy projects.

bioWAVE | BPS 

 

Galleries and Documents