据统计全国在应用的工业空压机有超过400万台,用电量约达到工业用电总量的9%左右,大多数都采用的是三相异步电动机Y-△启动方式,加载、卸载的控制都是以压力信号做为反馈信号,考虑到满足工厂的最大负荷要求来进行设计,而在实际运行中大部分时间都不会在满负载状态运行。综上所述,空压机存在很大的节能空间,具有重要的实施意义。 According to statistics, there are more than 4 million industrial air compressors in use throughout the country, and the electricity consumption reaches about 9% of the total industrial electricity consumption. Most of them use the three-phase asynchronous motor Y- △ starting mode, loading and unloading Of the control are based on the pressure signal as a feedback signal, designed to meet the plant’s maximum load requirements, and will not operate at full load most of the time during actual operation. In summary, there is a lot of energy-saving air compressor space, with important practical significance.