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Micro motor: how to improve the efficiency of micro motor, only true motor specific introduction

2020-09-23 11:14

The efficiency of a micro-motor refers to the ratio of its mechanical power to its input power, and the design of the micro-motor is to improve efficiency with a lower loss to the maximum extent. The following is a specific introduction to how to improve the efficiency of micro-motors.

In general, we divide the loss of micro-motors into two types, one is mechanical loss and the other is electromagnetic loss, such as copper loss, iron loss, hysteresis loss and so on. To reduce the loss of the rotor of the micro-motor, it is usually to reduce the resistance of the rotor winding, such as using relatively thick and low resistance wires, or increasing the cross-sectional area of the rotor slot. The material of the rotor of the micro-motor is also very critical, such as using a copper rotor. The loss can be reduced to about 15%.

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Secondly, the stator of the micro-motor will also lose. The method is to increase the slot area and full slot track of the stator. If it is a permanent magnet stator winding, the efficiency of the micro-motor will also be significantly improved. The iron loss of the micro motor can be effectively reduced by using good quality silicon steel sheet, and the hysteresis loss can be effectively reduced by increasing the length of the iron core.

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Some micromotors can achieve 90 percent efficiency because of the use of neodymium magnets and special magnetic circuit design, so that the micromotor can obtain a stronger magnetic flux to reduce electromagnetic losses. In addition, the low resistance commutator used in the micromotor can reduce friction to improve the efficiency of the micromotor. In addition, the efficiency of the coreless design of the micro DC motor will be very high.

shenzhen only motor development co., ltd. is focused on the production of stepper motor, push rod dc motor, precious metal brush motor, automotive micro motor micro motor such as national new and high technology enterprises, welcome to inquire.

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