Why are rare earth permanent magnet motors energy efficient? Three major components and six advantages are the key
About rare earth permanent magnet motor energy saving advantages are as follows:
In the past few years, the motor industry high-profile when it comes to permanent magnet motors, the degree of sought-after show an increasingly strong trend. According to my analysis, the reason why permanent magnet motors can be doubly concerned, inseparable from the strong support of the relevant state policies to high-efficiency permanent magnet motors as a representative of high-efficiency, ultra-high efficiency motor products can be quickly popularised to help energy saving and emission reduction, and to retain the green mountains and green water. Energy saving and environmental protection must be the future development trend, especially in the motor industry, permanent magnet motor energy-saving features show its advantages out, its energy-saving rate can be higher than 20%, on the rare earth permanent magnet motor energy-saving advantages are as follows:
Rare earth permanent magnet motor three major components
1, rare earth permanent magnet motor using high-performance permanent magnets, eliminating the motor stator or rotor part of the current excitation, so save this part of the copper loss (winding heat loss);
2, the use of brushless structure, no carbon brush structure of mechanical loss, but brushless motor is through the electronic commutation structure to achieve the commutation, here there is a part of the loss of electronic components, compared with the elimination of mechanical loss loss value is small, so the commutation part of the loss than the loss of brush motors to be smaller;
3, the use of high-performance rare earth permanent magnets, in the same rated power and rated speed, the motor volume can be made smaller, saving the motor silicon steel sheet, reducing some of the iron loss. Small power motors using rare earth permanent magnet motor can reach close to 90% efficiency, the general motor is about 75%.