Advantages of Permanent Magnet Variable Frequency Screw Air Compressor

The principle of permanent magnet variable frequency air compressor is to replace the excitation winding with permanent magnet for excitation. When three-phase alternating current with frequency f is applied to the three-phase stator windings (each with a difference of 120 °) of the permanent magnet motor, a rotating magnetic field will be generated at synchronous speed.

In the steady state, the main pole magnetic field rotates synchronously with the rotating magnetic field, so the rotor speed is also synchronous speed. The stator rotating magnetic field is constant and the main pole magnetic field established by the permanent magnet remains relatively static. They interact and generate electromagnetic torque to drive the motor to rotate and rotate.

What are the advantages of permanent magnet variable frequency screw air compressor?

1. The permanent magnet synchronous motor with high energy efficiency is used for energy conservation. In view of the wide adjustment range of permanent magnet frequency conversion, the new profile and exhaust port structure are used to bring lower voltage drop and higher energy efficiency. Therefore, the permanent magnet machine can reach the first level energy efficiency standard regardless of full load or light load.

2. The use of cost-effective frequency converter and vector frequency conversion technology makes the permanent magnet variable frequency screw machine have low impact, stable gas supply pressure and adaptive power grid voltage, thus greatly reducing equipment failures and maintenance.

3. The intelligent control system can continuously and accurately monitor the operation of the air compressor, feedback information in real time, and realize interlocking and remote control of multiple hosts.

4. Longer service life, air inlet adjustment range of 0~100%, volume control valve adjustment, small pressure loss, stable action, and longer service life.

5. The oil separator with large capacity and super large capacity, superior oil separation components and gas and liquid filter elements are equipped with five heavy oil and gas separators. The oil content control is more flexible, ensuring the high quality of compressed air.

6. Under full load, the permanent magnet motor of the permanent magnet variable-frequency screw air compressor produces large gas volume with minimum energy consumption; When the load rate of the permanent magnet variable-frequency screw air compressor is lower than 20%, the operating efficiency is always up to 95%, reaching the first level of energy efficiency. Compared with the power frequency screw air compressor, the energy saving is more than 39.7%; Compared with ordinary frequency conversion air compressor, it can save 10% energy.

7.  Durable and maintenance free

The permanent magnet variable-frequency screw air compressor uses rare earth permanent magnet synchronous motor to directly drive the screw host, without loss of magnetism at 120 ℃, and has a service life of 10 years. The screw host and motor of the permanent magnet variable frequency air compressor share the same main shaft, without belt and coupling, and the transmission efficiency is 100%. The motor has no bearing, and there is no motor or bearing fault point.

JOY MACHINERY always adheres to the corporate vision of "building a leading brand of oil-free air compressors in the world", and hopes to provide high-quality, clean and safe air for food, beverage and other production enterprises on the road of oil-free air compressor research and development, production and sales. Source protection, and also contribute a little bit to people's health and safety.

JOY MACHINERY oil-free air compressor series is widely used in the food and beverage processing industry due to its clean air source and continuous and stable gas transmission. If you have any needs, please contact us! JOY Machinery (Shanghai) Co., Ltd. has a professional design team with rich experience and welcomes customization. Diversified products can meet most applications and meet your one-stop shopping needs. The air compressor series includes power frequency screw air compressors, variable frequency screw air compressors, permanent magnet variable frequency screw air compressors, two-stage compression screw air compressors, integrated screw air compressors, laser cutting air compressors, medium and high pressure air compressors. Air compressors, oil-free water-lubricated screw air compressors (special oil-free screw air compressors for the medical industry), diesel-moving screw air compressors, electric-moving screw air compressors and other products.

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