从线圈结构和双边LCC补偿拓扑两方面开展无线电能传输系统的优化设计,以实现指定的输出功率和最高的传输效率。为研究无线充电环境中电磁场对人体的影响,通过三维电磁场仿真软件构建了一个完整的电磁环境仿真系统,包含无线充电系统、电...从线圈结构和双边LCC补偿拓扑两方面开展无线电能传输系统的优化设计,以实现指定的输出功率和最高的传输效率。为研究无线充电环境中电磁场对人体的影响,通过三维电磁场仿真软件构建了一个完整的电磁环境仿真系统,包含无线充电系统、电动汽车和具有重要器官的人体模型。模拟了7个场景:成人站立于车后方;成人坐于车内左前、右前、左后和右后方;成人躺卧于车后方;儿童躺卧于车后方(最坏情况)。仿真结果表明,对于22 k W的高功率无线充电环境,躺姿势儿童的心肺和躺姿势成人的心脏超出国际非电离辐射防护委员会规定的感应电场基本限值。由于车辆外壳的屏蔽和人体与利兹线的距离,坐在车内和站立于车后的场景对人们是安全的。展开更多
In underwater applications of contactless power transmission(CLPT) systems,high pressure and noncoaxial operations will change the parameters of electromagnetic(EM) couplers.As a result,the system will divert from its...In underwater applications of contactless power transmission(CLPT) systems,high pressure and noncoaxial operations will change the parameters of electromagnetic(EM) couplers.As a result,the system will divert from its optimum performance.Using a reluctance modeling method,we investigated the gap effects on the EM coupler in deep-sea environment.Calculations and measurements were performed to analyze the influence of high pressure and noncoaxial alignments on the coupler.It was shown that it is useful to set a relatively large gap between cores to reduce the influence of pressure.Experiments were carried out to verify the transferring capacity of the designed coupler and system for a fixed frequency.The results showed that an EM coupler with a large gap can serve a stable and efficient power transmission for the CLPT system.The designed system can transfer more than 400 W electrical power with a 2-mm gap in the EM coupler,and the efficiency was up to 90% coaxially and 87% non-coaxially in 40 MPa salt water.Finally,a mechanical layout of a 400 W EM coupler for the underwater application in 4000-m deep sea was proposed.展开更多
文摘从线圈结构和双边LCC补偿拓扑两方面开展无线电能传输系统的优化设计,以实现指定的输出功率和最高的传输效率。为研究无线充电环境中电磁场对人体的影响,通过三维电磁场仿真软件构建了一个完整的电磁环境仿真系统,包含无线充电系统、电动汽车和具有重要器官的人体模型。模拟了7个场景:成人站立于车后方;成人坐于车内左前、右前、左后和右后方;成人躺卧于车后方;儿童躺卧于车后方(最坏情况)。仿真结果表明,对于22 k W的高功率无线充电环境,躺姿势儿童的心肺和躺姿势成人的心脏超出国际非电离辐射防护委员会规定的感应电场基本限值。由于车辆外壳的屏蔽和人体与利兹线的距离,坐在车内和站立于车后的场景对人们是安全的。
基金supported by the National High-Tech R & D Program (863) of China (No 2007AA091201)the Natural Science Foundation of Zhejiang Province, China (No Y5090117)the Qianjiang Excellence Project of Zhejiang Province, China (No 2009R10036)
文摘In underwater applications of contactless power transmission(CLPT) systems,high pressure and noncoaxial operations will change the parameters of electromagnetic(EM) couplers.As a result,the system will divert from its optimum performance.Using a reluctance modeling method,we investigated the gap effects on the EM coupler in deep-sea environment.Calculations and measurements were performed to analyze the influence of high pressure and noncoaxial alignments on the coupler.It was shown that it is useful to set a relatively large gap between cores to reduce the influence of pressure.Experiments were carried out to verify the transferring capacity of the designed coupler and system for a fixed frequency.The results showed that an EM coupler with a large gap can serve a stable and efficient power transmission for the CLPT system.The designed system can transfer more than 400 W electrical power with a 2-mm gap in the EM coupler,and the efficiency was up to 90% coaxially and 87% non-coaxially in 40 MPa salt water.Finally,a mechanical layout of a 400 W EM coupler for the underwater application in 4000-m deep sea was proposed.
