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Advantages of SPM permanent magnet inverter screw machine

(Summary description)This article introduces the advantages of SPM permanent magnet inverter screw machine

Advantages of SPM permanent magnet inverter screw machine

(Summary description)This article introduces the advantages of SPM permanent magnet inverter screw machine

Information

SPM permanent magnet inverter screw machine can integrally install the motor on the axle to form an integral direct drive system, that is, an axle is a drive unit, eliminating a gearbox. The advantages of SPM permanent magnet inverter screw machine are as follows:

1. SPM permanent magnet inverter screw machine has high power efficiency and high power factor;

2. SPM permanent magnet inverter screw machine has low heating, so the motor cooling system has the advantages of simple structure, small volume and low noise;

3. The system of SPM permanent magnet inverter screw machine adopts fully enclosed structure, without transmission gear wear and noise, lubricating oil and maintenance;

4. The overload current allowed by SPM permanent magnet inverter screw machine is large, and the reliability is significantly improved;

6. Since there is no gearbox in the system of SPM permanent magnet inverter screw machine, the bogie system can be designed arbitrarily, such as flexible bogie and single axle bogie, which greatly improves the dynamic performance of the train.

7. Because SPM permanent magnet inverter screw machine adopts permanent magnetic poles, especially rare earth permanent magnets (such as neodymium iron boron), its magnetic energy product is high and high air gap flux density can be obtained. Therefore, when the capacity is the same, the motor has small volume and light weight.

8. The rotor of SPM permanent magnet inverter screw machine has no copper loss, iron loss, friction loss of collector ring and brush, and has high operation efficiency.

9. SPM permanent magnet inverter screw machine has small moment of inertia, large allowable pulse torque, high acceleration, good dynamic performance, compact structure and reliable operation.

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