随着人们对于生存环境的日益关注，能源的合理使用及节能问题已成为整个人类的重要课题。空调系统作为能耗大户．它的节能对于节能这个大课题，是非常有意义的。应用于离心式冷水机组中的变频驱动装置（Ｖａｒｉａｂｌｅ Ｓｐｅｅｄ Ｄｒｉｖｅｓ，简称ＶＳＤ），大大降低了机组的运行费用，年节能高达 ３０ ％。此外．它还具有增强卸载能力、软起动、运行宁静以及降低功率因素等优点。 As people pay more and more attention to the living environment, the rational use of energy and the issue of energy saving have become important topics for mankind as a whole. Air conditioning system as energy-hungry. Its energy saving is very significant for saving energy. The Variable Speed ​​Drives (VSDs), which are used in centrifugal chillers, greatly reduce the running cost of the units with an annual energy saving of up to 30%. In addition. It also has enhanced uninstall ability, soft start, quiet operation and reduce the power factor and so on.