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What are the performance differences between motors with the same power but different rotational speeds?
For motors of the same power, under the same workload conditions, high-speed motors have a smaller load but run faster, while low-speed motors have a larger load but run slower. However, within the same period of time, if the efficiency of the motors is comparable, the overall effect of the work ...Read more -
How to match the protection class and cooling method of the motor more reasonably?
The protection grade and cooling method are important components of the performance of motor products. The protection grade is the specific requirements for the protection of the motor based on different protection requirements through the design of the components themselves and their coordinatio...Read more -
Servo Motor
The term “servo” originates from the Greek word meaning “slave”. A “servo motor” can be understood as a motor that absolutely obeys the command of the control signal: before the control signal is issued, the rotor remains stationary; when the control signal is ...Read more -
Control of copper losses in the stator and rotor of an electric motor
Taking certain measures in the motor design and manufacturing stages is a top-level approach to reducing losses and forms the basis for reducing stator copper losses. For instance, based on the premise of conforming to insulation structure and operational process, reducing the end dimensions of t...Read more -
Why are cast aluminum rotor motors widely accepted?
According to the material characteristics filled in the motor rotor slots, there are wound rotor, cast aluminum rotor and permanent magnet rotor. Comparatively, the cast aluminum rotor is the most widely used, of course, also due to some cost and process advantages of this type of rotor. The slot...Read more -
Why do air compressors adopt permanent magnet synchronous motors?
In industrial production, air compressors are considered “energy-consuming giants”, and the performance of their motors directly determines the operating costs, efficiency and reliability. The essence of equipping air compressors with permanent magnet synchronous motors is to solve th...Read more -
The advantages of permanent magnet synchronous motors
Safe and reliable Intelligent variable frequency drive ensures smooth operation of the equipment with minimal impact Extends the service life of the equipment, with low vibration and low noise Energy-saving and highly efficient The motor efficiency meets the first-level energy efficiency standard...Read more -
The influence of bearings on motor efficiency
What are the differences between 2RZ and 2RS bearings? Simply put, 2RS has rubber seals on both sides, while 2RZ has dust covers on both sides. One is contact type and the other is non-contact type. 2RS has less noise, but its precision is not very high and cannot reach P5 level. The basic dimens...Read more -
A high-voltage motor will generate corona discharge. Why does a variable-frequency motor do the same?
Corona discharge occurs when an uneven electric field is generated by a non-smooth conductor. Around the non-uniform electric field and near the electrode with a small radius of curvature, when the voltage rises to a certain level, due to the ionization of air, a discharge will occur, forming a c...Read more -
Analysis of the Causes of Motor Bearing Heating Issues
The bearing system is a very crucial quality and operational element of motor products. The overheating of bearings is often the main cause of bearing system failure. Overheating of bearings can lead to the degradation and failure of bearing grease, causing deformation of the inner and outer ring...Read more -
Why does the motor shaft turn blue?
For most readers, the term “bluing” is not unfamiliar. Bluing is a process where steel or steel parts are heated to an appropriate temperature in air, water vapor or chemical agents to form a blue or black oxide film on the surface. However, for motor components, it is often not due t...Read more -
What effects does a decrease in voltage have on the motor?
I. Current Variation According to Ohm’s Law, the relationship among current I, voltage U, and resistance R is I = U/R. In motors, resistance R (mainly stator resistance and rotor resistance) usually does not change much, so a decrease in voltage U will directly lead to an increase in curren...Read more