เหตุใดมอเตอร์แม่เหล็กถาวรจึงมีประสิทธิภาพเหนือกว่ามอเตอร์เหนี่ยวนำแบบอะซิงโครนัสในเครื่องอัดอากาศ

เครื่องอัดอากาศ have grown integral with present times for modern industrial production. Motors constitute one of the major driven components, and their performance necessarily takes great effect on the efficiency and costing of the air compressor. Currently, มอเตอร์แม่เหล็กถาวร and asynchronous induction motors remain some of the most popular in application. Both motors have their merits and characteristics, but recent years of more and more studies show that permanent magnet motors are more advantageous compared with asynchronous induction motors in air compressors. Let us probe the reasons in respect to which permanent magnet motors can outrank asynchronous induction motors in air compressors and look at their perspectives on application in the future.

หลักการของมอเตอร์แม่เหล็กถาวรและมอเตอร์เหนี่ยวนำแบบอะซิงโครนัส

หลักการของมอเตอร์แม่เหล็กถาวร

Permanent Magnet Motor Principle Permanent magnet motor is a type of device in which permanent magnets are used to generate the rotation magnetic field of motors. Construction-wise, it contains a stator and a rotor. A coil at the stator is excited due to the flow of electric current to generate the rotating magnetic field. That means permanent magnets on the rotor will get attracted by, and follow this rotating magnetic field. Continuously changing the current in a different direction through the stator coil gives continuous rotary motion in the rotor. High efficiency, high power density, and quick response mark Permanent magnet motors.

 หลักการของมอเตอร์เหนี่ยวนำแบบอะซิงโครนัส

The asynchronous induction motor is a type of device for transforming three-phase AC electrical energy into mechanical energy. The structure consists of a stator and a rotor. A coil on the stator is excited by a three-phase AC current with a rotating magnetic field formed. On the rotor, a strip of conductors-a squirrel cage-because of the induction effect will develop eddy currents and will cause rotational motion of the rotor inside the magnetic field. Unlike permanent magnet motors, asynchronous induction motors rotate at a speed somewhat less than the synchronous speed of the rotating magnetic field; hence the name asynchronous motor. Asynchronous induction motors are characterized by simplicity of construction, low cost and high reliability.

ข้อกำหนดของเครื่องอัดอากาศต่อสมรรถนะของมอเตอร์

An air compressor is a device that raises the pressure of air from low to high, finding broad applications in industries and commerce. In order to guarantee normal operation and effective performance, certain requirements are raised correspondingly for the motors used.

พลังและความเร็ว

Generally, air compressors require high power for effective compression. The motor should thus be powerful enough to handle the working requirements of the air compressor. The speed of the motor should be appropriate for the design specifications of the air compressor. Too high or too low a speed may result in the compressor not working efficiently or as required. Therefore, selection of the right speed range becomes critical.

ลักษณะโหลด

 The load for compression that the compressor needs to drive is huge; hence, the motor will be capable of providing such adequate torque output in complementarity with load fluctuation and such high starting torque. Besides the stability of torque output, the other very important factor for efficiency and smooth operating is the air compressor. It needs to possess good stability in terms of torque output, considering how it may have to work over fluctuation and changes in operating conditions.

ประสิทธิภาพสูงและประหยัดพลังงาน

Since there is an improvement in the general energy efficiency, air compressors are always to be installed with high-efficiency motors. A high-efficiency motor reduces energy loss and transforms more electric energy into useful mechanical work. Motors applied to air compressors are designed in such a way that it should be energy efficient. It saves energy by changing the motor speed according to actual demand with variable frequency control technology and thus avoids operating for a long time under high load.

ความน่าเชื่อถือและความทนทาน

 the working environment of an air compressor is usually under high-temperature conditions; therefore, the motor should be resistant to high temperature and work reliably for long periods in a high-temperature environment. Air compressors are usually designed to run continuously for a very long period, and therefore, design and quality of manufacture of motors to be installed at air compressors must ensure their reliability and long service life in order to reduce frequency of maintenance and replacement.

ข้อดีของมอเตอร์แม่เหล็กถาวรในเครื่องอัดอากาศ

The Permanent Magnet motor is a class of motor that relies on the permanent magnet material for excitation. Relative to asynchronous induction motor systems, permanent magnet motors now have the following advantages, thereby economizing as much as 35% of energy and prolonging compressor life.

ประสิทธิภาพสูงและประหยัดพลังงาน:Permanent Magnet Motors are very efficient, whereby most of the electrical energy is converted to mechanical work. Properties of permanent magnet material allow motors to operate with lower copper and iron losses, hence improving overall efficiency in energy use. Permanent magnet motors can be run by frequency control technology which changes the motor speed according to the actual demand. This would mean that the speed could be reduced when under lighter loads and, in turn, the consumption of energy. Permanent magnet motors can work energy-efficiently with flexible speed control.

ขนาดและน้ำหนักที่เล็กกว่า:  Permanent magnet motors exhibit high power density, which simply means that they can provide more power output at the same volume. This will enable the use of permanent magnet motors in air compressors to reduce overall size and weight by enhancing compactness and portability of the equipment. Meanwhile, the magnetic field of a permanent magnet motor can realize higher torque density, that is, more torque output can be provided in the same volume to allow the compressive process in an air compressor to be much more efficient.

การตอบสนองที่รวดเร็วและการควบคุมที่แม่นยำ: Permanent magnet motors are characterized by fast response; thus, these motors can start and stop within a very short time.

This is important for air compressors, which have to respond in an instant to the change of load and demand for work. Permanent magnet motors can also allow highly precise control of torque and speed, which can be controlled based on actual demand. It therefore provides better suitability for the air compressor in operating conditions with various loads and optimizes performance concerning control and stability. Permanent magnet motors boast a bright application prospect in the air compressor field with continuous technological progress and innovation. Based on this, new research and development of permanent magnetic materials and motor structures shall be continuously done to improve the efficiency and performance stability of motors. Further applications of intelligent control and permanent magnet motors will move forward to get more accurate speed regulation and energy management, thereby further improving system energy efficiency. In the design and manufacturing of permanent magnet motors, higher priority will be given to environmental protection and sustainable development as a way of contributing to sustainable development. ENNENG is a high-technology enterprise that mainly deals in researching and developing permanent magnet motors. The motors shall ensure these industries have solutions that are reliable, safe, and at low cost. The characteristics of the เอ็นเอ็นเอ็น  series PMSM are low speed with high torque; therefore, this characteristic enables the engine to suit applications with high power output at low speed.

The main advantages of the permanent magnet motor are mainly used for energy savings. These motors have been used in industries like gold mines, coal mines, tire factories, oil wells, and water treatment plants in huge quantity for many years and are working well to save consumption. Savings rate after use of permanent magnet motors ranges from 7% up to 40% depending upon its usage.

Other merits of ENNENG permanent magnet motors are their high reliability and safety, flexibility of operation, and full control within the whole range of speeds. Motors can also bear very severe conditions and long life; thus, they are an economically viable investment for companies.

The company has been involved in the manufacture of permanent magnet motors with models in series to suit the needs of different industries, including low speed and high power units for belt conveyors, direct-drive motors for tire machinery, variable frequency for air compressors, and generators for applications in wind and water. The various products developed reflect advanced technology, having passed through various tests on performance and durability.

Focusing on innovation,เอ็นเอ็นเอ็น was chosen as one of the “100 Innovative Enterprises” in Qingdao. It is through research and development, aiming at efficient and sustainable solutions, that the enterprises that seek high-quality permanent magnet motors come to trust the company.

Conclusion: Permanent magnet motors by ENNENG are reliable, safe, and energy-saving for different industries. With wide applications and advanced technology, the motors become one of the preferred choices of many businesses in enhancing their activities and saving energy.