Possible causes of malfunction:Excessive clearance of bearings due to wear and tear;Uneven air gap affects the balance of the motor;Unbalanced rotor leads to vibration;The bending deformation of the shaft affects the operation of the motor;Iron core deformation or looseness, affecting the stability of the motor;The center of the coupling (or pulley...

Henry

02-17

449

0

0

1、 Phase failurePhase failure is one of the common faults in permanent magnet synchronous motors, which may be caused by poor contact of power lines, wiring faults in windings, or burnt windings. If there is a phase failure in the permanent magnet synchronous motor, the first thing to check is the power cord, winding, and other parts. If poor conta...

Smith

2024-09-06

492

1

0

1、 Low costThe manufacturing cost of AC asynchronous motors is relatively low and the price is relatively affordable. Due to its simple structure, there is no need for slip rings and brushes, which effectively reduces its manufacturing cost. Therefore, AC asynchronous motors are widely used in various fields.2、 High efficiencyThe efficiency of AC...

Erdogan

2024-08-13

473

1

1

This type of malfunction is mainly caused by the failure of the main circuit control equipment (frequency converter, contactor, soft starter, etc.) to operate. It can be checked whether the main circuit control equipment has received control commands in a timely manner, such as whether the main contactor is engaged, whether the frequency converter ...

Tim Johnson

2024-07-20

478

0

0

1. Power supply not connected: If the power supply is not connected or has poor contact, it will cause the motor to not rotate. At this time, electricians should check the switch, fuse, various contacts, and wiring heads to gradually identify the fault and carry out maintenance;2. When starting, the fuse of the fuse is blown, causing it to not tu...

Clarence

2024-07-15

537

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1. Single phase faultThis situation occurs when any phase of the power supply voltage is lost. This is because the normal operation of a three-phase induction motor requires a three-phase voltage source. Due to this malfunction, the motor may burn out or generate heat.2. Reverse phase sequence faultWhen any phase of the three-phase power supply i...

Abel

2024-07-11

444

1

0

In the no-load experiment of asynchronous motors, a three-phase voltage regulator is used to supply power, causing the stator terminal voltage to gradually decrease from (1.1-1.3) Un, and the no-load current to gradually decrease until there is a significant change in the motor speed and a significant increase in no-load current. Why does a decreas...

Payson

2024-07-04

482

1

0

Mechanical failure is a type of failure that typically occurs in the internal casing of a three-phase induction motor. These faults are further subdivided into three types, such as:1. Rotor wire breakage faultThe squirrel cage induction motor consists of a rotor bar and a short end ring. If these guide bars are damaged or locally cracked, then thi...

Cyril

2024-06-17

438

1

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AC asynchronous motor (also known as induction motor) is a type of motor widely used in industry and household appliances. The following are its main advantages and disadvantages:advantageSimple structure: Asynchronous motors have a simpler structure than synchronous motors and lower manufacturing costs.Easy maintenance: Due to the lack of brushe...

Jamie

2024-05-28

515

1

0

The design and working principles of asynchronous motors and synchronous motors differ, resulting in differences in their power and applicable scenarios.The working principle of asynchronous motors is based on the principle of electromagnetic induction, which generates torque through the interaction between the rotor and stator magnetic field, cau...

Smith

2024-05-24

475

1

0

What are the structural differences between synchronous motors and asynchronous motors?

Carey

2024-05-20

446

2

0

Electric energy is one of the most important sources of energy in modern society, and motors are devices that convert electrical energy into mechanical energy. Electric motors are widely used in various industries such as machinery, metallurgy, petroleum, coal, chemistry, aviation, transportation, agriculture, and others. With the continuous improv...

berainlb

2024-05-14

424

1

0

I am currently working on a design for fault diagnosis of three-phase asynchronous motors. The general idea is to build a model, obtain normal and fault signals, and finally use wavelet transform spectrum analysis. However, it is currently unclear how to model, what model is appropriate, and which parameters can be changed to achieve the correspond...

Durell

2024-04-27

506

1

0

Asynchronous motors only have no back electromotive force when no voltage is applied to the stator winding. If voltage is applied to the stator, an air gap magnetic field will be established. When the rotor rotates, it will induce rotor current, which in turn generates rotor magnetic field. The rotor magnetic field affects the air gap magnetic fiel...

roy

2024-04-25

451

1

0

Ordinary asynchronous motors are designed according to the principle of constant frequency and constant voltage, which cannot fully meet the requirements of variable frequency speed regulation. The influence of frequency converter on motor is as follows:1. Motor efficiency and temperature riseNo matter what form of frequency converter, it will ge...

Abel

2022-11-18

660

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0