Miromar is developing an oscillating-hydrofoil generator for channels where depth limits a conventional rotor. The system turns the motion of a hydrofoil array into electricity through a submerged generator.
THE MOTION
Water moving past a hydrofoil creates force. Miromar controls the foil through a repeating heave-and-pitch motion and uses that motion to drive the generator. A row of hydrofoils forms one module.
THE GEOMETRY
A round rotor grows in every direction at once, so a shallow channel limits its diameter. A hydrofoil array can extend across the channel instead. Miromar’s design target is more power per metre of channel width.
THE SYSTEM
The generator sits below the surface. The module operates with flow in either direction, including ebb and flood, without being turned around. Its approximate 2.5 × 7.5 metre envelope is sized for transport in a standard shipping container.
| Specification | Canal module | Tidal module |
|---|---|---|
| Peak power | 4.75 kW ModelledEight-hydrofoil simulation | 30–50 kW Design estimate |
| Validation | TRL 3 Measured (lab)Numerical model validated against flume experiments | Design stage |
| Flow direction | Both directions | Ebb and flood |
| Drivetrain | Submerged | Submerged |
| Module envelope | Approx. 2.5 × 7.5 m; sized for a standard shipping container | |
Drawings and test data are available to partners and investors under NDA.
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