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目前纺丝设备变频器都面临改造，本文结合天津石化公司涤纶厂前纺变频改造的实例和经验提出改造方案的选定及实施过程中应注意的几个问题，以保证改造的科学性、经济性、先进性、可靠性。
At present, the inverter of spinning equipment all faces transformation. Based on the examples and experience of frequency conversion of polyester spinning plant in Tianjin Petrochemical Company, this paper puts forward some problems that should be noticed in the selection of reform program and the implementation process so as to ensure the scientific and economical Sex, advanced, reliability.