基于E类逆变磁耦合无线电能高效率传输设计
|
摘要
针对无线电能传输(WPT)系统效率低的问题,提出了一种基于E类双管逆变器和FPGA频率跟踪控制的磁耦合谐振式WPT(MCR-WPT)系统。设计了双E类高频逆变电路,推导出带有E类逆变MCR-WPT系统传输效率的表达式。利用Multisim进行了电路仿真和分析,研究了线圈位置和半径对耦合系数的影响,得出了耦合系数、传输距离和有无频率跟踪对传输效率的影响曲线。研制了小功率WPT装置,在传输距离为8 cm左右时,获得最大传输功率为98,效率为84%。实验结果证明了理论分析的正确性。
Aiming at the problem of ineffective transmission of a wireless power transmission(WPT) system, a magnetic coupling resonant WPT(MCR-WPT) system based on E-type dual-tube inverter and FPGA frequency tracking control is proposed.Double E-type high frequency inverter circuit is designed and the expression of the transmission efficiency of MCR-WPT based on E-type inverter is derived.Using Multisim for circuit simulation and analysis,the effect of coil position and radius on the coupling coefficient is studied,the influence curves of coupling coefficient,transmission distance,and frequency tracking on transmission efficiency are obtained.A low-power WPT device is made,at the transmission distance of 8 cm,the maximum transmission power is 98 W and the efficiency is 84%.The experimental results prove the correctness of the theoretical analysis.
Aiming at the problem of ineffective transmission of a wireless power transmission(WPT) system, a magnetic coupling resonant WPT(MCR-WPT) system based on E-type dual-tube inverter and FPGA frequency tracking control is proposed.Double E-type high frequency inverter circuit is designed and the expression of the transmission efficiency of MCR-WPT based on E-type inverter is derived.Using Multisim for circuit simulation and analysis,the effect of coil position and radius on the coupling coefficient is studied,the influence curves of coupling coefficient,transmission distance,and frequency tracking on transmission efficiency are obtained.A low-power WPT device is made,at the transmission distance of 8 cm,the maximum transmission power is 98 W and the efficiency is 84%.The experimental results prove the correctness of the theoretical analysis.
引文
[1]陈文仙,陈乾宏.共振式无线电能传输技术的研究进展与应用综述[J].电工电能新技术,2016,35(9):8-13.
[2]潘超,刘凯旭,郑永健.电磁耦合谐振式无线电能传输系统性能研究[J].电力电子技术,2017,51(2):107-109.
[3]张军歌,刘宜成,杜玉洁,等.基于改进E类放大器的无线电能传输系统[J].电力电子技术,2016,34(5):73-74.
[4] Roslaniec L,Jur Kov A S.Design of Single Switch Inverters for Variable Resistance Load Modulation Operation[J].IEEE Trans. on Power Electronics,2015,50(11):3201.
[5]辛平平,周冀松,丰骏,等.T参数模型及其在S/P补偿WPT系统中的应用[J].电工电能新技术,2018,37(4):42-48.
[6] Kazimierczuk M.Effects of the Collector Current Fall Time on the Class E power Amplifier[J].IEEE Journal of Solid-state Circuits, 1983,18(2):181-193.
[2]潘超,刘凯旭,郑永健.电磁耦合谐振式无线电能传输系统性能研究[J].电力电子技术,2017,51(2):107-109.
[3]张军歌,刘宜成,杜玉洁,等.基于改进E类放大器的无线电能传输系统[J].电力电子技术,2016,34(5):73-74.
[4] Roslaniec L,Jur Kov A S.Design of Single Switch Inverters for Variable Resistance Load Modulation Operation[J].IEEE Trans. on Power Electronics,2015,50(11):3201.
[5]辛平平,周冀松,丰骏,等.T参数模型及其在S/P补偿WPT系统中的应用[J].电工电能新技术,2018,37(4):42-48.
[6] Kazimierczuk M.Effects of the Collector Current Fall Time on the Class E power Amplifier[J].IEEE Journal of Solid-state Circuits, 1983,18(2):181-193.