摘要
无线电能传输技术是电动汽车实现自动化、智能化充电的重要支撑技术,为实现不同无线充电设备的互联互通,基于端口阻抗的互操作评价方法被广泛应用于互操作测试。然而由于地面端、车载端设备的实际安装环境差异以及用于评价的基准设备的制作公差问题,常常导致用于评价互操作性的基准区域边界与实际边界有所偏差,增加测试结果的误判率,然而目前尚没有明确的容忍区域确定方法以提升互操作评价准确性。本文通过建立端口阻抗与互操作关联表征模型,结合电动汽车国标参考设备参数范围,研究设备公差对端口阻抗影响的量化取值,基于误差传递理论提出了一种互操作阻抗边界容忍区域确定方法,可有效降低互操作性测试误判率,进一步提升端口阻抗评价法的准确性。
Wireless power transmission is an important supporting technology for the automation and intelligent charging of electric vehicles.In order to facilitate the interconnection and interoperability of diverse wireless charging devices,an evaluation method based on port impedance is widely employed in interoperability testing.However,the variations in the actual installation environment between ground assembly(GA)and vehicle assembly(VA),along with the manufacturing tolerances of reference devices used for evaluation,can result in deviations between reference boundary used for evaluating interoperability and the actual one.These discrepancies can contribute to an increased misjudgment rate of test results.At present,there is no clear method available for determining tolerance zones to enhance the accuracy of interoperability evaluation.This article first proposes a characterization model to examine the correlation between port impedance and interoperability.Then,combined with the parameter range of reference devices in national standards,the quantitative impact of changes in the equipment tolerances on port impedance is investigated.Finally,based on the error transfer theory,a method is proposed to determine the tolerance zone of the interoperability impedance boundary.This method effectively reduces the misjudgment rate of interoperability testing and improves the accuracy of the port impedance evaluation.
作者
兰宇
姜金海
宋凯
刘咏璐
兰昊
张宝强
Lan Yu;Jiang Jinhai;Song Kai;Liu Yonglu;Lan Hao;Zhang Baoqiang(Harbin Institute of Technology,Harbin 150001;Harbin Electric Corporation Marine Intelligent Equipment Company Limited,Harbin 150001;China Automotive Technology and Research Center Co.,Ltd.,Tianjin 300300)
出处
《中国汽车》
2024年第4期43-49,共7页
China Auto
基金
全国汽车标准化技术委员会公益性开放课题(CATARC-Z-2022-01330)
国家自然科学基金(52277006)。
关键词
无线充电
互操作性
端口阻抗
容忍区域
wireless charing
interoperability
port impedance
tolerance zone
