SUBMERSIBLE TURBINE-GENERATOR UNIT FOR OCEAN AND TIDAL CURRENTS

摘要

A submersible turbine-generator unit includes two or more turbines mounte d on a common shaft with a generator therebetween. Each such turbine is capa ble of providing relatively low-speed, unidirectional rotation under a rever sible ultra low head pressure and/or low velocity fluid flow. The turbines c omprise a working wheel with a plurality of airfoil-shaped blades mounted tr ansversely to the direction of fluid flow for rotation in a plane parallel t o the fluid flow. The turbines convert energy in the waterway currents into mechanical energy that will transfer it through the turbine shaft to a cylin drical permanent magnet generator which will convert mechanical energy in th e form of RPM and torque into electricity. Electricity from the variable spe ed electric generator is controlled, synchronized, conditioned and transform ed into utility-grade electricity using a power electronics system in each m odule.