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12-19

2024

Why is there an air gap between the rotor and stator of a motor?

In order to ensure that the rotor can rotate freely in the stator cavity during motor operation, an air gap must be maintained between the rotor core and the stator core. Although there is no direct electromagnetic connection between the rotor and stator, when the stator winding is energized, similar to the principle of a transformer, there is an electromagnetic connection between the rotor and stator, thus achieving the energy conversion function between electrical energy and mechanical energy.

12-11

2024

What kind of motor is considered a good motor?

Electric motor, also known as electric motor and generator, is a device that converts electrical energy and mechanical energy based on the principle of electromagnetic induction. According to the different working power sources, motors can be divided into DC motors and AC motors, which are widely used in various mechanical equipment to drive equipment operation or convert energy. What kind of motor is considered a good motor?

11-28

2024

What are the causes of short circuit faults in motor windings?

The motor winding is one of the core components of the motor, which is made up of wires wound in a specific way to form the electromagnetic part of the motor. The main function of the winding is to generate a magnetic field and induced electromotive force, thereby achieving energy conversion and transmission in the motor. In motors, windings are usually divided into stator windings and rotor windings, which generate a magnetic field through the action of current to drive the motor to operate. The design and manufacturing quality of windings directly affect the performance, efficiency, and reliability of motors. But short circuit of motor winding is also a common fault of motors, and its causes are diverse.

11-21

2024

What negative effects does rotor imbalance have on the performance of the motor?

The motor rotor, as the core rotating component in the motor, works together with the stator to achieve the conversion of electrical and mechanical energy. It is usually composed of rotor iron core, shaft and other components, responsible for outputting torque in the electric motor or receiving energy in the generator. Unbalanced rotor is a common problem in motor operation.

11-14

2024

What unique properties does direct drive technology endow to motors?

Direct drive technology refers to the direct drive of a machine by an electric motor, without the need for traditional mechanical transmission devices such as gearboxes, reducers, screws, turbines, etc. to transmit power. Its working principle is to directly drive the load through the rotor of the motor, thereby achieving transmission and control. Direct drive motors are usually composed of three parts: stator, rotor, and sensor. The stator generates a rotating magnetic field, which causes the rotor to rotate under rotational torque, thereby driving the load.

11-07

2024

What are the reasons for the high current of high-efficiency motors?

The main reason for the high current of high-efficiency motors is due to optimization measures in the design. In order to achieve high efficiency, motor designers will take measures to reduce motor losses, such as reducing the number of turns in the winding and decreasing the resistance to reduce heat loss. However, these measures will also increase the excitation current of the motor, resulting in a larger current bias.

10-19

2024

Empowering with strong intelligence, improving quality and moving towards innovation | The 2024 China International Textile Machinery Exhibition and ITMA Asia Exhibition have come to a successful conclusion

Driven by the wave of globalization and Industry 4.0, the textile machinery industry has undergone unprecedented changes, and a textile machinery feast with "new quality productivity" as the core driving force has once again opened the curtain of industrial iteration. From October 14th to 18th, 2024, the five-day 2024 China International Textile Machinery Exhibition and ITMA Asia Exhibition (hereinafter referred to as "2024 International Textile Machinery Exhibition") successfully concluded at the National Convention and Exhibition Center (Shanghai).

10-17

2024

2024 China International Textile Machinery Exhibition and ITMA Asia Exhibition

2024 China International Textile Machinery Exhibition and ITMA Asia Exhibition

10-11

2024

Hengda Electric cordially invites you to participate in the China International Textile Machinery Exhibition and ITMA Asia Exhibition

As of September 2024, about 1700 leading textile machinery manufacturers have applied to participate in the exhibition, including many well-known domestic and foreign enterprises such as Hengtian Group, Lida, Toyota, Shimadzin, etc. Compared to the previous edition, it is expected that the scale of this exhibition will be larger.

09-30

2024

What is the difference between high-efficiency energy-saving motors and ordinary motors?

The high-efficiency and energy-saving motor adopts new motor design, new technology, and new materials, which improve output efficiency by reducing the loss of electromagnetic energy, thermal energy, and mechanical energy. Compared with ordinary motors, the energy-saving effect of using high-efficiency motors is very significant, with an average efficiency increase of 5%. Characteristics of using high-efficiency and energy-saving motors:

09-26

2024

The 11th China International Cable and Wire Exhibition

The 11th China International Cable and Wire Exhibition officially kicked off from September 25th to 28th at the Shanghai New International Expo Center. Hengda Electric cordially invites you to meet at booth E3A52 and looks forward to your visit.

09-20

2024

What is the reason for the high power consumption of the motor?

The reasons for high power consumption of motors may include motor load conditions, motor structure and materials, slip rate, overload operation, inflexible rotation, line losses, etc. ‌1. Motor load condition: If the motor operates under light load for a long time, its efficiency is low and the power factor is also low, resulting in reactive power components occupying the majority and wasting electrical energy. In contrast, motors running at full load have higher efficiency and are more energy-efficient.

09-12

2024

Technical analysis of permanent magnet synchronous motor

The synchronization principle of permanent magnet synchronous motor is based on the relative position of electromagnetic field. There is a set of permanent magnets inside the motor, usually permanent magnet ores or rare earth magnets. When the motor is powered, the permanent magnet generates a constant magnetic field. At the same time, the motor also generates a rotating magnetic field through the stator coils.

09-06

2024

What is the energy-saving effect of high-efficiency and energy-saving electric motors?

Efficient and energy-saving electric motors refer to those that can significantly improve energy utilization efficiency, reduce energy consumption, and minimize environmental pollution during the design, manufacturing, and use process. They usually adopt new motor designs, new processes, and new materials to improve output efficiency by reducing losses of electromagnetic energy, thermal energy, and mechanical energy. The energy-saving effect of high-efficiency and energy-saving electric motors is very significant.

08-30

2024

Complete Guide to Motor Selection

When choosing the type of motor, multiple factors need to be considered, such as cost, performance, reliability, maintainability, operating speed, and efficiency. The following are several common types of motors and their characteristics:1. AC motor: AC motors are widely used in industrial and household fields. According to the working principle, AC motors can be divided into synchronous motors and asynchronous motors. Asynchronous motors are commonly used in most applications due to their simple structure, low cost, and easy maintenance.

08-23

2024

What are the benefits of replacing high-efficiency and low-energy motors?

With the continuous advancement of industrial technology, motors, as an important component of industrial equipment, have become an important direction for industrial development in terms of optimizing and upgrading their performance. As a new type of electric motor, high-efficiency motors have the advantages of high efficiency, low energy consumption, low noise, and high reliability, gradually becoming an ideal choice to replace old motors.

08-16

2024

Is there any relationship between uneven motor speed and frequency converter?

Uneven motor speed is a common problem that can be caused by various factors. However, there is indeed a relationship between uneven motor speed and frequency converter.The frequency converter changes the operating speed of the motor by adjusting the voltage and frequency supplied to the motor. During low-speed operation, the speed variation of a variable frequency motor is mainly influenced by several factors, including the stability of the power supply frequency, load changes, and the compatibility between the motor and the variable frequency converter. If the parameters of the frequency converter are not set correctly or if the grid voltage fluctuates, it will cause the output voltage

08-09

2024

Why can't permanent magnet synchronous motors start directly?

Firstly, we need to understand the working principle of permanent magnet motors. Permanent magnet motor is a motor that generates torque through the interaction between permanent magnets and current, and its torque is proportional to the current. Therefore, during startup, sufficient current needs to be provided to generate enough torque for the motor to start.

08-02

2024

Is a higher motor power more powerful?

not always.The higher the power of the motor, the more powerful it may not necessarily be, because the power of the motor depends not only on the power, but also on the speed.The power of a motor represents the work done per unit time, and the higher the power, the more energy the motor converts per unit time, theoretically leading to better power performance. However, in practical applications, the speed and momentum of the motor are not only determined by the power output, but also influenced by other parameters such as speed and torque.

07-26

2024

What temperature should the motor generally not exceed?

The temperature of a motor usually depends on its type and design. Generally speaking, if the insulation level of the motor is Class A and the ambient temperature is 40 ℃, the temperature of the motor casing should not exceed 60 ℃, and the temperature limits of each part of the motor should be met. The temperature of rolling bearings should not exceed 95 ℃, and the temperature of sliding bearings should not exceed 80 ℃. Excessive temperature can cause changes in oil quality and damage the oil film. In practice, the temperature of the chassis is often based on not being hot to the touch. The surface of the squirrel cage rotor has significant stray losses and high temperatures, generally limited to not endangering adjacent insulation. It can be estimated by applying irreversible color changing paint in advance.

07-19

2024

Reasons and solutions for motor speed faults

As a key driving equipment in modern industry, motors play an indispensable role in various mechanical systems. However, during long-term operation, the motor inevitably experiences some malfunctions. Below, we will analyze the two main causes and solutions for motor speed faults.

07-12

2024

What is the appropriate speed for a permanent magnet direct drive motor?

The speed of a permanent magnet direct drive motor depends on the specific application scenario and design requirements, with a wide range from low speed to high speed. It can adjust parameters such as voltage and number of magnetic poles as needed to adapt to different speed requirements, in order to meet the performance and economic needs of different application scenarios.The detailed analysis of the speed of permanent magnet direct drive motor is as follows:

07-05

2024

How to ensure the reliability of servo permanent magnet direct drive motors?

The reliability of servo permanent magnet direct drive motors is mainly reflected in their design, manufacturing, material selection, and operation and maintenance. These motors use high-quality permanent magnet materials and precise manufacturing processes to ensure the stability and durability of their core components. In addition, the servo permanent magnet direct drive motor also has intelligent monitoring and maintenance functions, which can monitor the operating status in real time, detect and handle potential faults in a timely manner, thereby reducing the failure rate and downtime.

06-28

2024

Will permanent magnet direct drive motors replace traditional motors?

Whether permanent magnet direct drive motors will replace traditional motors is a complex issue that requires consideration of various factors, including technical characteristics, cost, application areas, and market acceptance.The following is a detailed analysis of this issue:

06-21

2024

Innovative application of permanent magnet direct drive motors in industrial automation

Industrial automation is a comprehensive technology that involves multiple fields. It replaces manual operation of machines and machine systems in industrial production through the use of automatic control, automatic adjustment devices, and other technical means. The innovative application of permanent magnet direct drive motors in industrial automation is mainly reflected in their high efficiency, intelligence, and maintenance free aspects.

06-14

2024

What is the impact of the response speed of permanent magnet direct drive motors?

Permanent magnet direct drive motors have excellent performance in response speed and can achieve very precise speed control, suitable for high speed and high precision situations. It should be noted that the response speed of permanent magnet direct drive motors has a significant impact on practical applications

06-07

2024

Why is the efficiency of permanent magnet direct drive motors higher?

The reason why permanent magnet direct drive motors have high efficiency is mainly due to the use of high-performance permanent magnet materials to generate a strong magnetic field, thereby achieving high power density of the motor in small volume and weight. This design reduces excitation and copper losses, allowing the motor to more effectively convert electrical energy into mechanical energy during operation. In addition, permanent magnet direct drive motors can maintain high efficiency over a wide load range, further improving their overall performance.

05-31

2024

What is the response speed when using permanent magnet direct drive motors?

Permanent magnet direct drive motors have excellent performance in response speed and can achieve very precise speed control, suitable for high speed and high precision situations.Its main characteristics and advantages can be summarized as follows: 1. Omitting the rotating device: Compared to traditional motors, permanent magnet direct drive motors do not require intermediate rotating devices, such as gear transmission, so they can respond more directly and quickly to external control signals.

05-24

2024

How to judge the quality of permanent magnet direct drive motors?

The quality of permanent magnet direct drive motors mainly depends on their performance, operational stability, and durability. A good permanent magnet direct drive motor should have characteristics such as high efficiency, low noise, low vibration, high reliability, and long service life. Therefore, when purchasing permanent magnet direct drive motors, users should choose motors with stable performance, high reliability, and good durability based on the equipment's needs and usage environment to ensure the normal operation and long-term benefits of the equipment. So how to judge the quality of permanent magnet direct drive motors? It can be done from the following aspects:

05-16

2024

What are the key steps in the manufacturing of permanent magnet direct drive motors?

The manufacturing of permanent magnet direct drive motors is a complex and meticulous process that involves multiple key steps and professional techniques.The key steps include the following aspects:1. Raw material procurement and processing: The manufacturing of permanent magnet direct drive motors requires the use of various raw materials, such as motor cores, permanent magnet materials (mainly including rare earth permanent magnet materials and ferrite permanent magnet materials), insulation materials, and coil materials. Especially for permanent magnet materials,

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