Some parts of our
main products are Rare Earths
Knowing that wind power is an essential energy source for human beings, many countries in the world are making their efforts to fully release its power. However, there are large challenges when develop the wind power, one of the biggest challenges is its continued improvements in reliability and efficiency. Most turbines use a series of shafts and gearboxes that are capable of converting the slow rotation speed of a wind turbine into the high rotation speed necessary for power generation. While this is effective, the method is less efficient, and the gearboxes and shafts often require maintenance.
The next generation of wind turbines used “direct drive” technology operated by rare earth permanent magnet generators (PMGs). Direct drive turbines produce energy even at a lower rotation speeds, without the need for gearboxes. The results is brilliant that the power it produces is much more efficient with the elimination of the gearbox, which has lower chances of mechanical failure.
The PMGs are the keys, and they require hundreds of kilograms – if not tons – of neodymium (neo) magnets. Neo magnets are well-suited for this application for the enormous amount of magnetic power they create is relative to their sizes. And in the case of wind power, where rotation speeds can change greatly, the neo magnet powered PMGs can generate electricity more consistently and more efficiently.
In most cases, neo magnets have to maintain dysprosium so that the magnet will keep its strongest magnetic properties even at high heat levels. However, some PMG wind turbines are being designed to keep the magnets cool and reduce the need for dysprosium, which is one of the rare earths in shortest supply.
By improving the efficiency and reliability of wind power, rare earth PMGs are also ameliorating the cost performance of wind turbine technology to ensure that wind power features can be prominently in the world’s current and future investment of energy sources.