网址：www.kongyajii.cn 2022-03-10 作者：admin 阅读：
Permanent magnet variable frequency air compressors have become synonymous with energy-saving pioneers in the air compressor industry in the past two years. Some air compressor manufacturers even use "air compressors without money" as advertising words to attract the attention of users.
Of course, the energy saving of permanent magnet motor is relatively higher than that of traditional asynchronous motor with the same control method. The key point of energy saving is that 80% of the air compressors are in variable load state. According to the amount of gas consumption, frequency conversion speed regulation is used to automatically meet the needs of users and reduce the loss of reactive work.
However, 20% of the cases are full voltage and full load. In this case, using frequency conversion to control asynchronous motor consumes more energy than direct starting, because the frequency converter itself is IGBT to control the frequency by switching, and it has 2 ~ 3% of the rated power to be lost.