Comparison between power frequency air compressor and permanent magnet variable frequency air compressor
Air compressors are one of the main sources of power in industrial production. With the continuous progress of technology, various types of air compressors emerge one after another, which also confuses customers about which one is better. Due to the astonishing power consumption of air compressors, which can reach about 30% of the electricity required in production, energy-saving permanent magnet variable frequency air compressors on the market can save more electricity and are favored by a large number of users. So what is the difference between traditional power frequency air compressors and permanent magnet variable frequency air compressors? Below, the editor will briefly summarize the following points for you:
1、 Stability of atmospheric pressure
a. Power frequency air compressors are controlled by up and down switches, and the stability of air pressure is generally doubled.
b. The permanent magnet variable frequency air compressor mainly relies on the continuous speed regulation of the frequency converter. It can be smoothly opened through the controller and the regulator in the frequency converter. If there are gas fluctuations, it can also respond actively.
2、 At startup, the magnitude of the impact force
a. Power frequency air compressors start at 6 times the rated current, which has a significant impact on the power grid. There is a potential risk of burning electrical appliances.
b. The permanent magnet variable frequency air compressor is equipped with a frequency converter and a soft start. The maximum starting current is within 1.2 times the set current, and there is almost no impact on the power grid during startup.
3、 Control flow changes
a. The displacement of the power frequency air compressor is fixed.
b. The exhaust range of the permanent magnet variable frequency air compressor is relatively wide, and the frequency converter continuously adjusts the motor operating speed based on the actual air consumption, thereby controlling the size of the exhaust volume. As we all know, the gas consumption in factories is not constant. If there is a decrease in gas consumption, the air compressor can self regulate, which reduces energy consumption.
4、 Noise level
a. The motor speed of the power frequency air compressor is constant, so the sound of the air compressor is relatively loud.
b. Permanent magnet variable frequency air compressors usually operate in low-speed environments, and the internal friction of the equipment is also relatively low, resulting in relatively low sound. If the cooling fan is also driven by variable frequency mode, it will significantly reduce the noise of the air compressor. Due to the fact that most components operate at relatively low speeds, the service life of the components is extended.
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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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