一种用于空间无线电能传输的耦合机构设计
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摘要
空间无线电能传输技术可以较好地解决感应耦合电能传输中,因使用正对平板传输能量导致拾取功率随接收机构与发射机构间夹角增大而降低的问题。然而目前空间无线电能传输技术所用耦合机构存在磁场构造成本较高、功率拾取不够平滑等问题。在此提出一种用于空间无线电能传输的新型耦合机构,该机构构造磁场方式简单,可以实现多自由度能量均匀传输。通过对发射机构进行分析与磁场仿真,验证了磁场均匀度。提出了零拾取功率面积的概念,基于此概念对接收机构进行设计。最后通过搭建实验平台验证了所提出的耦合机构具有较好的能量传输均匀度,系统输出功率最大波动值为27%,可以为负载提供较为稳定的功率。
The omnidirectional wireless power transfer technology can better solve the problem that the receiving power could decrease with the increase of the angle between the receiving mechanism and the launching mechanism which is caused by the use of the positive pair of energy transmitting plate in the process of the inductively coupled power transfer.However,the coupling mechanism used in omnidirectional wireless power transfer technology has some flaws,such as high cost of constructing magnetic field and unsmooth power picking.So a new coupling mechanism for omnidirectional wireless power transfer is proposed.The mechanism is simple in magnetic field construction,and can realize uniform energy transmission with multiple degree of freedom.The uniformity of the magnetic field is verified via the analysis of the launching mechanism and the simulation of the magnetic field.The concept of zero pickup power area is put forward,on which receiving mechanism is designed.The experimental platform helps to verify that the coupling mechanism which proposed has better energy transmission uniformity,and the system maximum fluctuation of the output power is 27%,which can provide more stable power for the load.
The omnidirectional wireless power transfer technology can better solve the problem that the receiving power could decrease with the increase of the angle between the receiving mechanism and the launching mechanism which is caused by the use of the positive pair of energy transmitting plate in the process of the inductively coupled power transfer.However,the coupling mechanism used in omnidirectional wireless power transfer technology has some flaws,such as high cost of constructing magnetic field and unsmooth power picking.So a new coupling mechanism for omnidirectional wireless power transfer is proposed.The mechanism is simple in magnetic field construction,and can realize uniform energy transmission with multiple degree of freedom.The uniformity of the magnetic field is verified via the analysis of the launching mechanism and the simulation of the magnetic field.The concept of zero pickup power area is put forward,on which receiving mechanism is designed.The experimental platform helps to verify that the coupling mechanism which proposed has better energy transmission uniformity,and the system maximum fluctuation of the output power is 27%,which can provide more stable power for the load.
引文
[1]黄学良,王维,谭林林.磁耦合谐振式无线电能传输技术研究动态与应用[J].电力系统自动化,2017,41(2):2-14.
[2]宋俊霖,刘宜成,赵耀,等.面向便携式电子设备的无线电能传输研究[J].电力电子技术,2014,48(10):64-66.
[3]Bang-Jun Che,Fan-Yi Meng,Yue-Long Lyu,et al.Omnidirectional Wireless Power Transfer System Supporting Mobile Devices[J].Applied Physics,2016,122(2):54.
[4]Feng J,Li Q,Lee F C.Omnidirecitional Wireless Power Transfer for Portable Devices[A].Applied Power Electronics Conference and Exposition[C].IEEE,2017:1675-1681.
[5]Lin D,Zhang C,Hui S Y R.Mathematical Analysis of Omnidirectional Wireless Power Transfer-Part-I:Two-dimensional Systems[J].IEEE Trans.on Power Electronics,2016,32(1):625-633.
[6]Bo H C,Lee E S,Sohn Y H,et al.Six Degrees of Freedom Mobile Inductive Power Transfer by Crossed Dipole Tx and Rx Coils[J].IEEE Trans.on Power Electronics,2015,31(4):3252-3272.
[7]Ha-Van N,Seo C.Analytical and Experimental Investigations of Omnidirectional Wireless Power Transfer Using a Cubic Transmitter[J].IEEE Trans.on Industrial Electronics,2017,65(2):1358-1366.
[8]Jonah 0,Georgakopoulos S V,Tentzeris M M.Orientation Insensitive Power Transfer by Magnetic Resonance for Mobile Devices[A].Wireless Power Transfer[C].2013:5-8.
[2]宋俊霖,刘宜成,赵耀,等.面向便携式电子设备的无线电能传输研究[J].电力电子技术,2014,48(10):64-66.
[3]Bang-Jun Che,Fan-Yi Meng,Yue-Long Lyu,et al.Omnidirectional Wireless Power Transfer System Supporting Mobile Devices[J].Applied Physics,2016,122(2):54.
[4]Feng J,Li Q,Lee F C.Omnidirecitional Wireless Power Transfer for Portable Devices[A].Applied Power Electronics Conference and Exposition[C].IEEE,2017:1675-1681.
[5]Lin D,Zhang C,Hui S Y R.Mathematical Analysis of Omnidirectional Wireless Power Transfer-Part-I:Two-dimensional Systems[J].IEEE Trans.on Power Electronics,2016,32(1):625-633.
[6]Bo H C,Lee E S,Sohn Y H,et al.Six Degrees of Freedom Mobile Inductive Power Transfer by Crossed Dipole Tx and Rx Coils[J].IEEE Trans.on Power Electronics,2015,31(4):3252-3272.
[7]Ha-Van N,Seo C.Analytical and Experimental Investigations of Omnidirectional Wireless Power Transfer Using a Cubic Transmitter[J].IEEE Trans.on Industrial Electronics,2017,65(2):1358-1366.
[8]Jonah 0,Georgakopoulos S V,Tentzeris M M.Orientation Insensitive Power Transfer by Magnetic Resonance for Mobile Devices[A].Wireless Power Transfer[C].2013:5-8.