DESIGN OF NEW VLH turbine-generator, as result of many years of experience and R&D in the low head turbines.
Incorporation of MJ2 technologies sas with the aim of developing the new concept of VLH turbine from a technical and scientific point of view and then starting the process of industrialization of the product.
Filing of the international patent.
FIRST INSTALLATION AND STARTING WITH OPERATING SITE TESTS.
At the end of 2012, MJ2 technologies is part of Sorgent.e group, which has increased its interest and now holds the majority of the share capital.
VLH is able to operate with very low heads, from 1,4 to more than 4 meters.
The use of the VLH turbine allows a sensible reduction of civil works costs. The quantity of concrete is reduced and no external buildings are necessary.
Tests executed on eels demonstrate that the death rate is equal to 0%.
VLH guarantees an average efficiency 5% higher than traditional turbines.
VLH displays submerged turbine and generator. Practically there is no environmental impact. The turbine is noiseless and there are no vibrations.
It can operate fully automatically, thus without connection to the electrical grid.
A standard product distributed on different sizes. The price is affordable. Low implementation and delivery schedules.
Thanks to the permanent magnets generator with variable speed, the VLH turbine allows a very good performance even with wide range of heads.
mortality ratio of the tested fishes of the VLH DN5000 with spherical stay ring and spherical hub installed on the River Tarn at the La Glacière HPP
adult Salmons in downstream migration stage
Trouts in downstream migration stage
The following sections are comparing the existing technologies for very low head sites regarding the size and complexity of the Civil Work structures.