With the landing of the government work report in 2015, “energy saving” is still the top priority of the whole industry throughout the year! The traditional air compressor is at a disadvantage due to the low load operation efficiency. Due to the structural problems of the asynchronous motor, the motor efficiency is not high, and the potential of the frequency conversion cannot be completely released. Therefore, the permanent magnet brushless frequency conversion screw machine is born out of the world, and it has the advantages of obvious energy saving effect, low temperature rise, good starting performance and high efficiency at light load，IPM permanent magnet motor will be the mainstream of the market.
Product Analysis of Permanent Magnet Motor Motor for Air Compressor
Rare earth permanent magnet brushless DC motor is still the most used motor in China's air compressor. Due to its relatively low cost, mature technology and good characteristics, this motor plays an important role in some systems and constantly seeks technological advancement. Rare earth permanent magnet excitation can effectively improve power density; use multiple redundancy forms to improve fault tolerance; use multi-alloy precious metal brushes and commutators to improve commutation performance and extend life; use hollow cup armature structure to reduce moment of inertia, etc. .
The permanent magnet motor uses the permanent magnet to generate the magnetic field of the motor. It does not need the excitation coil and the excitation current. The high efficiency and simple structure are good energy-saving motors. With the advent of high-performance permanent magnet materials and the rapid development of control technology, permanent magnet motors The application will become more extensive.
