摘要
该文采用有限元法对曝露于大功率无接触网供电城轨车辆中的人体进行电磁安全评估,以检测该无接触网供电城轨车辆是否低于人体电磁曝露安全值。以500kW无接触网供电城轨车辆为例,通过数值仿真计算车内漏磁水平,并对车内佩戴心脏起搏器的人体进行感应电磁场和比吸收率(SAR)评估,将计算结果与国际非电离辐射防护委员会(ICNIRP)中规定的限值进行比较。结果表明,人体内部感应电场较低,但是在人体表面感应出较高电场,装有心脏起搏器的组织SAR值远低于2W/kg的限值,人体站在渡板上方时,脚踝处SAR值最高并且十分接近局部SAR限值。这些结果对于无接触网供电技术在轨道交通领域的安全应用起到了积极的作用。
In this paper,the finite element method is applied to evaluate the electromagnetic field of the human body exposed to the high-power catenary-free power supply urban rail transit vehicle to detect whether the safety value of electromagnetic exposure of human body is lower than that of the catenary-free power supply urban rail transit vehicles.Taking a 500kW catenary-free power supply urban rail transit vehicle as an example,the magnetic flux leakage in the vehicle was calculated by numerical simulation,and the human body induced electromagnetic field and specific absorption rate(SAR)of a pacemaker in the vehicle were calculated.The evaluation and calculation results were compared with the limits specified in the international commission on non-ionizing radiation protection(ICNIRP).The results show that the internal electric field of the human body is low,but a high electric field is induced on the body surface,and the tissue SAR value equipped with pacemaker is far below the limit of 2W/kg.When the human body is standing above the ferry board,the SAR value at the ankle is the highest and very close to the local SAR limit.These results have played a positive role in the safe application of catenary-free power supply technology in the field of rail transit.
作者
董亮
林飞宏
王晨曲
张秋敏
Dong Liang;Lin Feihong;Wang Chenqu;Zhang Qiumin(School of Electrical Engineering Southwest Jiaotong University,Chengdu 611756 China;CRRC Tangshan Co.Ltd,Tangshan 063035 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2021年第S01期40-45,共6页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(U1834203)
国家重点研发计划(2017YFB1201003)资助项目。
关键词
无接触网供电
电磁曝露
比吸收率
感应电场
心脏起搏器
Catenary-free power supply
electromagnetic exposure
specific absorption rate(SAR)
induced electric field
cardiac pacemaker
