测试方法对AI/PI漆包扁线PDIV测量结果的影响  

Influence of measurement method on PDIV test results of AI/PI enamelled rectangular magnet wire

作　　者：刘蔚 林熙云 张市明 沈翔龙 叶国庆 冯晓亮 王绪彬 黎远菊 LIU Wei;LIN Xiyun;ZHANG Shiming;SHEN Xianglong;YE Guoqing;FENG Xiaoliang;WANG Xubin;LI Yuanju(Zhejiang Xiandenglüneng New Material Co.,Ltd.,Xiandeng Hi-tech Electric Co.,Ltd.,Huzhou 313000,China;Xyno(Shanghai)Advanced Materials Co.,Ltd.,Shanghai 201109,China)

机构地区：[1]浙江先登绿能新材有限公司先登高科电气股份有限公司,浙江湖州313000 [2]上海盛诺新创材料科技有限公司,上海201109

出　　处：《绝缘材料》2023年第8期115-118,共4页Insulating Materials

基　　金：浙江省湖州市科技计划项目(2022ZD2032)。

摘　　要：新能源汽车驱动电机所用的漆包扁线需要测试局部放电起始电压(PDIV),但现有的IEC标准和国家标准对PDIV测试条件没有明确规定,国内电机厂商对漆包线的PDIV性能评估要求各不相同。为了获得漆包线准确的PDIV性能数据,本文详细分析了局部放电测试仪的测试原理,并分析了聚酰胺酰亚胺(AI)漆包扁线和聚酰亚胺(PI)漆包扁线在不同升压速率、判定阈值、样线贴合长度条件下测试方法对PDIV结果的影响。结果表明:以10V/s、10 pC作为测试条件,样线贴合长度超过90 mm时,得到的PDIV值最接近其理论值。若采用高于该条件的升压速率、判定阈值进行测试,所得PDIV结果会显著偏高,结果稳定性也会下降。Enamelled rectangular magnet wires used in driving motor for electric vehicle need to test their partial discharge initial voltage(PDIV).However,the current IEC and national standards have no normative parameter on the PDIV test condition,and domestic motor manufacturers have different requirements on the PDIV performance.In order to obtain accurate PDIV data,the testing principle of instrument for measuring partial discharge was studied.The influence of test methods on the PDIV results of polyamide-imide and polyimide enamelled rectangular magnet wires under different voltage increase rate,determination threshold,and fitting length of wires was analyzed.The results indicate that if 10 V/s and 10 pC are taken as test condition and the fitting length of wires is more than 90 mm,the PDIV results are the closest to the theoretical value.If higher rising rate and higher threshold are used,the measured PDIV results will be higher,and the stability of test results will decrease.

关 键 词：汽车驱动电机 漆包扁线 局部放电 检测标准 

分 类 号：TM303.4[电气工程—电机]