【目的】IE5能效等级是目前全球统一的低压三相交流异步电动机最高能效等级,对应国家标准GB/T 18613—2020中的1级能效。针对国内IE5能效等级系列三相异步电动机缺乏统一设计的现状,为推进1级能效电机的发展,上海电器科学研究院组织完成了YE5系列(IP55)三相异步电动机产品开发。IE5能效为全球最高等级,对应国标GB/T 18613—2020中的1级能效。【方法】联合行业骨干生产企业及上下游企业组成工作组,在2级能效电机联合设计基础上,综合应用降耗技术,如大小槽设计、冲剪气隙工艺及低压铸铝等,显著降低电机附加损耗,从而提升电机效率。【结果】通过关键技术的攻关与应用,完成了低压三相交流异步电动机全系列产品设计。16个规格30台样机的试制与测试表明,电机效率均达到GB/T 18613—2020中1级能效限值要求,验证了设计的有效性。【结论】本项目实现了国内首个1级能效低压三相异步电动机系列化行业统一设计,填补了产品空白,为电机行业能效升级提供了重要实践支撑。

[Objective] The IE5 energy efficiency class is currently the highest global standard for low-voltage three-phase asynchronous motors, corresponding to the 1st energy efficiency level in the national standard GB/T 18613—2020. In response to the lack of unified design for IE5 energy efficiency series motors in China, the Shanghai Electrical Apparatus Research Institute has organized the development of the YE5 series (IP55) three-phase asynchronous motor to promote the advancement of 1st energy efficiency motors. The IE5 energy efficiency is the highest global standard, equivalent to the 1st energy efficiency level in GB/T 18613—2020. [Methods] A working group was formed by uniting leading manufacturers and upstream/downstream enterprises. Based on the joint design of IE2 efficiency motors, energy-saving technologies such as unequal-slot design, stamped air-gap process, and low-pressure aluminum die-casting were comprehensively applied, significantly reducing additional motor losses and thereby improving motor efficiency. [Results] The complete product series of low-voltage three-phase asynchronous motors was developed through breakthroughs and applications of key technologies. Prototype testing of 30 units across 16 specifications demonstrated that all motor efficiencies met the IE5 efficiency limits specified in GB/T 18613—2020, confirming the design’s validity. [Conclusion] This project achieves the first unified industry design for a series of 1st energy efficiency low-voltage three-phase asynchronous motors in China, filling a product gap and providing crucial practical support for the energy efficiency upgrade of the motor industry.