? ? ? ? ?The magnetic watt is mainly used in permanent magnet DC motor, and it is different from the magnetic potential source of the electromagnetic motor through the excitation coil. The permanent magnet motor is stabilized by permanent magnet source. Permanent magnetic tile replaces electrical excitation has many advantages, the motor has the advantages of simple structure, convenient maintenance, heavy motor magnetic tile of light weight, small volume, reliable use, copper tile manufacturers, less copper consumption is low, low power consumption and etc..
Influence of magnetic tile on motor
(1) the remaining magnetic induction intensity is Br. Because of high Br auto motor magnetic tile dry to ensure that the motor have higher speed, large output torque and large power. The motor will have higher efficiency.
(2) high Hcb. Because the Hcb is high, it can guarantee the electromotive force needed for the motor output, make the motor operation point close to the maximum magnetic energy product, and make full use of the talent of the magnet.
(3) high Hcj. Hcj high, can ensure that the motor has a strong anti overload, demagnetization and anti-aging, low temperature resistance.
(4) high (BH) max. (BH) the higher the max, the better the operating coefficient of the permanent ferrite in the motor.
(5) the greater the magnetic energy the better, which will greatly improve the efficiency of motor operation.
(6) the better the squareness of the demagnetization curve, the smaller the dynamic loss of the motor.
(7) the higher the resistivity of the permanent ferrite, the smaller the eddy current loss.
(8) the temperature coefficient of the permanent ferrite is small, and it has excellent temperature stability at high temperature
(9) remanence affects the motor speed, power, torque and so on
(10) the coercive force affects the electromotive force of the motor.
(11) the intrinsic coercivity affects the demagnetization of the motor.
(12) the greater the magnetic energy product, the better the coefficient of operation of the motor.
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