Reasons for permanent magnet motors _how to prevent negligence of permanent magnet motors

The reason demagnetization of permanent magnet motor Permanent magnet motor performance has an important indicator to high temperature level, exceeding its temperature resistance, and its magnetic flux density will drop sharply. High temperature resistance grade can be divided into: N series, 80 degrees above; H series, 120 degrees; SH series, more than 150 degrees. 1, the cooling fan motor anomaly, causes the motor temperature 2, the motor temperature protection means is not provided 3, the ambient temperature is too high 4, the motor design is unreasonable How to prevent demagnetization of permanent magnet motor 1, the correct choice of permanent magnet motor power Select power and demagnetization of permanent magnet motor related. The right choice for permanent magnet motor power can prevent or delay demagnetization. The main reason permanent magnet synchronous motor is demagnetized is high temperature, high temperature overload is the main reason. Thus, the choice of the permanent magnet motor power to leave a margin, according to the actual load situation, generally about 20% is appropriate. 2, avoiding frequent start and heavy start Starting cage asynchronous synchronous permanent magnet motors or direct start to avoid overloading frequent starting. Asynchronous starting, the starting torque is oscillating, the starting torque valley segments, the stator field is the demagnetization of rotor poles. Thus to avoid overloading and asynchronous permanent magnet synchronous motor frequent starting. Read more

Our other product:

Professional lightning protection system for Tower	Professional FM Radio Station Equipment Package	FMUSER FU-1000C 1000W FM Transmitter With USB Audio Input Interface
FMUSER 200W FM Radio Broadcasting Package	Hotel IPTV Solution	FMUSER FSN-1000T V5.0 1KW FM Radio Broadcast Transmitter