MAGNOMATICS magnetic gear and PDD
Introduction to Magnetic Gears: Magnetic gears use permanent magnets to transmit torque between the input and output shafts without mechanical contact. Magnetic gears can achieve full load efficiency > 99% and partial load efficiency much higher than mechanical gears, even a magnetic gear will be smaller, lighter and less expensive than mechanical teeth.
Introduction to Magnetic Gears: Magnetic gears use permanent magnets to transmit torque between the input and output shafts without mechanical contact. Magnetic gears can achieve full load efficiency > 99% and partial load efficiency much higher than mechanical gears, even a magnetic gear will be smaller, lighter and less expensive than mechanical teeth.
Instead of developing a range of standard products, Magnomatics brings the effort to focus on the specific application magnetic gear partiulcar. This may be due to space limitations, efficiency or because of the inherent torque capability fused in a magnetic gear. They used the first gear to produce ZiLift to drive a pump in the oil and gas drilling pumping application.
Magnetic gears are connected to the PDD: the PDD combines a stator magnetic gear with a standard wound. The outer array of magnets is a fixed internal bore. The magnetic field generated by the stator windings is used to drive the inner rotor. The torque generated by the rotor then propagates through the steel rods. This will result in a very compact, high torque density machine. The resulting naturally elastic magnetic gear means extremely low levels of output torque ripple. The Magnomatics patent provides an important advancement for direct drive (PDD) with traditional permanent magnet motor/generator technology to achieve an equivalent point of continuous torque density. Cool the machine 8 times while maintaining high efficiency. This significantly increases the torque density allowing the motor to directly drive many loads, using a combination of a conventional engine and a gearbox. The ideal application would have a very high continuous torque speed. It is suitable for applications from aerospace drives, marine propulsion drives through direct drive utility scale wind turbines and railway traction systems.
