Energy saving principle of permanent magnet variable-frequency screw air compressor

In the whole life cycle of air compressor, its total cost is mainly composed of procurement cost, maintenance cost and energy consumption cost. The energy cost accounts for the largest proportion, so in today's air compressor market, the majority of manufacturers and users are pursuing energy conservation. For screw air compressor, energy-saving air compressor can be divided into ordinary frequency conversion series and permanent magnet frequency conversion series. Common frequency conversion is to adjust the motor speed by means of external frequency converter to achieve energy-saving effect. Variable frequency air compressor often operates under partial load, and permanent magnet motor can make up for the low energy efficiency of variable frequency air compressor.

1. The biggest advantage of permanent magnet variable frequency air compressor is energy saving. Generally, it can save about 10%~30%, or even more. The amount of energy saving depends on the actual operating conditions of the air compressor and the parameter settings of the inverter. The biggest factor is the impact of actual working conditions. When the user's gas consumption fluctuates periodically, the greater the change, the better the energy saving effect. The most direct reflection is the proportion of no-load time to the total working time.

2. The permanent magnet variable frequency air compressor can realize soft start with low starting current, which reduces the impact on electrical components, does not cause damage to electrical equipment, and extends the service life of the motor, host and bearing. The highly efficient and energy-saving control system can prevent frequent loading and unloading of the air compressor. All kinds of relevant solenoid valves and pneumatic components greatly reduce the number of actions, and greatly reduce the failure rate and maintenance costs.

3. The permanent magnet variable frequency air compressor controls the speed of the permanent magnet motor through the frequency converter to form a frequency conversion closed loop control system to achieve constant pressure air supply, more use and more production, less use and less production, stop when not needed, and soft start when useful, completely eliminating the energy consumption of useless work. In addition, when the air displacement is reduced, the speed of the motor slows down and the power consumption is reduced. At this time, the noise of the air compressor is much smaller than that at full speed.

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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