What are the reasons for the reduced efficiency of micromotors?

Efficiency is a relatively important performance indicator of micro-motor, for different pole number of micro-motor efficiency varies, micro-motor in the process of operation sometimes appear to reduce the efficiency of the problem, the following to give you an analysis of the causes of micro-motor efficiency is reduced what are

1. micro-motor stator copper loss is large

(1) High wire resistivity, small wire diameter, uneven wire diameter, incorrect wiring, inadequate welding, and other factors.

(2) High stator current: mainly caused by extra losses, asymmetrical stator windings, unequal stator-rotor air gap, less turns than usual, improper winding wiring, etc.

2. High copper losses in micro-motor rotors

(1) Micro-motor rotor winding resistance is high due to high resistivity of copper, porosity or other impurities in aluminum rotor end rings, material not meeting specification requirements, rotor errors, etc.

(2) High rotor flow, when the core of the rotor is loosely laminated, such as ordinary aluminum alloy rotor, the transverse current of the rotor will increase.

3. High iron loss of micro motor

Poor quality or wrong material of silicon steel sheet, poor insulation of stator core, too high pressure when the core is laminated, short circuit of iron chip, etc. will cause large iron loss of micro motor.

4. Mechanical loss

Small bearing chamber diameter, insufficient lubrication, sweeping, high friction resistance

The above is to introduce you to the causes of micro-motor efficiency reduction, more information about the welcome to contact us at any time