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The permanent magnet synchronizing variable frequency compressor is equipped with high efficient permanent magnet synchronizing motor (PM motor). Compared to normal motors, the PM motor has a smaller volume and more excellent energy saving. It will exert an incomparable energy-saving effect than a normal inductive motor when installed with the special frequency converters. It uses high-performance NdFeB magnets which will not lose magnets even at 120℃ and service life can be up to 15 years. The stator winding can be of special corona resistant wire for frequency converters with excellent insulation performance. As the magneto conductivity of rotors is very high, the diameter is very small and able to be installed at the extending shaft of the male rotor, without the use of bearing, thus eliminating the faults of motor bearing and improving the driving efficiency.
The benefits of permanent magnet synchronous motor used in inverter screw air compressor are mainly reflected in the following aspects:
High efficiency and energy saving: Permanent magnet synchronous motors are characterized by high efficiency and low power consumption, which can significantly improve the energy efficiency of air compressors. During compressor operation, the permanent magnet synchronous motor can generate atmospheric volume with minimum energy consumption, and even under the condition of low load rate, it can maintain high operation efficiency and achieve first-class energy efficiency. This high efficiency and energy saving feature helps to reduce the operation cost of the enterprise and improve the economic efficiency.
Speed control: By changing the input power frequency of the permanent magnet synchronous motor, stepless speed regulation of the motor can be realized, so as to accurately control the compressor’s rotational speed and discharge volume. This speed regulation function enables the compressor to be flexibly adjusted according to different gas demand, improving the adaptability and operational efficiency of the equipment.
High stability: permanent magnet synchronous motor has excellent stability, can reduce the vibration and noise during the operation of the equipment, improve the reliability and service life of the equipment. In addition, due to the simple structure and small volume of the permanent magnet synchronous motor, it makes the whole air compressor equipment more compact and easy to install and maintain.
Intelligent control: Permanent magnet synchronous motor can be combined with advanced control system to realize intelligent control of air compressor. Through continuous monitoring and feedback, the running condition of the equipment can be understood in real time, and multi-master chain and remote control can be realized, which improves the intelligent level and management efficiency of the equipment.
Enneng is a China leading permanent magnet motor supplier. Enneng’s permanent magnet motors are widely used in China famous companies of different fields including gold mines, coal mines, tire factories, oil wells, and water treatment plants. we now introduce Energy-saving Permanent Magnet Motors with our VFD models which decreases Energy consumption substantially to save even more energy as well as money.
Enneng permanent magnet motor uses a motor with a temperature rise lower than 60K, ensuring the compressor has a longer life. The motor is made from rare earth permanent magnet material, which requires a low current due to its high magnetic strength and load torque during motor start-up and operation. The combined use of this motor and permanent magnet rotor achieves soft-start and electricity saving of up to 50%, with the motor’s efficiency up to 10%-15% when compared with an asynchronous motor with the same specifications, thus avoiding a powerful mechanical impact on the compressor under the motor’s full pressure start and ensuring a longer service life.
