Most of the existing tidal current energy systems that have been deployed to date are single turbines designed to rest on the seabed. The single turbine approach leads to enormous machines. Besides the high capital expenses for these huge machines, the operating expenses are significantly driven by the necessity to transport the devices to a maintenance base, requiring heavy gear, expensive vessels and suitable onshore infrastructure.
BRTP is directly addressing these cost drivers with a unique approach that combines the innovative TRITON platform developed by TidalStream, which is semi-submerged, floating and freely rotates to the flow, with inexpensive small and robust SCHOTTEL Instream Turbines (SITs).
The electrical power produced by the individual turbines is collected and conditioned in the electrical room located inside the platform system. Hence, the power electrics and control systems are easily accessible for maintenance. Grid compliant electric energy is transferred by cable from the floating structure. Additional conditioning of the electrical energy on shore is not required.
A gravity base foundation is used to anchor the platform system and lowered down to the seabed prior to the final installation. The whole structure is assembled at shore and then towed out to the installation location. The tether arm is lowered down to the foundation and then only the cable connection is required for installation The floating structure is then ballasted into the operating position. Decommissioning of the device occurs in the reverse order.