Hydromatrix technology

HYDROMATRIX

HYDROMATRIX turbine generator (TG) units are in use at the majority of our reference applications. The design of these axial-type propeller turbines, with bulb-style generators, was developed on the basis of proven conventional turbine and generator designs and further improved by applying state-of-the-art permanent magnet technology for the generator rotors.

Equipped with sump-lubricated roller bearings and mechanical face seals, these TG units have minimum maintenance requirements and guarantee reliable operation throughout their service life. ANDRITZ HYDRO offers asynchronous and synchronous generators in both low and high voltage.

StrafloMatrixTM

StrafloMatrix is a special design for applications with limited space or restrictions with regard to the maximum module weight. This design places the generator directly on the periphery of the turbine runner, which results in a very compact arrangement and makes StrafloMatrix units build 50% shorter and weigh 35% less than Hydromatrix units.

The generator rotor consists of permanent magnets arranged on the outer perimeter of the turbine runner. To achieve a watertight generator assembly, rotor and stator are filled entirely with a sealing and insulation compound.

Main characteristics of StrafloMatrix units

• Straight-flow fixed propeller turbine
• Sump-lubricated roller bearings
• Mechanical face seal
• Permanent magnet generator rotor technology

Due to friction losses in the water-filled generator gap, the power output of StrafloMatrix units is lower than that of the Hydromatrix units.