负载阻抗特性对引信磁共振耦合无线装定系统传输特性影响
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摘要
接收端负载阻抗特性对引信装定系统的能量传输性能有重要影响,针对该问题建立了非纯阻性负载条件下的磁共振耦合无线装定系统电路模型,理论结合试验分析了负载阻抗特性对系统传输性能的影响规律。结果表明:负载中的容性或感性成分会使共振频率产生偏移,并对传输性能带来不利影响,其根本原因在于负载阻抗通过耦合映射会引起中继回路等效电容值或电感值的变化;负载阻抗角小于0°时,共振频率较纯电阻情况向下偏移,共振频率变小,随着阻抗角的增大,频率偏移量及对传输性能的影响程度逐渐减弱,当负载中电容成分增大到一定值后,这种影响可以忽略;阻抗角大于0°时,共振频率偏移特性相反,随着电感值的增大,负面影响越来越严重,最终会破坏收发端的共振耦合状态,造成装定结果失败;理论分析结果与试验结果吻合较好。
The load impedance characteristics of receiver have an important influence on the power transmission performance of fuze setting system. For this problem,a circuit model of a magnetic resonance coupling wireless setting system under condition of non-pure resistance load is established. The influence rules of load impedance characteristics on the transmission performance of the system are analyzed theoretically and experimentally. The result shows that the capacitive or inductive component of the load causes the resonant frequency to be offset and affects the transmission performance adversely. The basic reason is that the load impedance results in the variation of equivalent capacitance or inductance in the relay circuit through coupling mapping. When the impedance angle of load is less than zero,the resonant frequency is shifted downward and decreased. With the increase in impedance angle,the frequency offsetand its influence on the transmission performance are gradually diminished. This influence can be ignored when the capacitance increases to a certain value. When the impedance angle is greater than zero,the resonant frequency offset is opposite. With the increase in inductance value,the negative influence is becoming more and more serious,which will eventually destroy the resonant coupling state of the system,causing the failure of setting. The proposed model is proved to be correct,and the theoretical result is consistent with the experimental result.
The load impedance characteristics of receiver have an important influence on the power transmission performance of fuze setting system. For this problem,a circuit model of a magnetic resonance coupling wireless setting system under condition of non-pure resistance load is established. The influence rules of load impedance characteristics on the transmission performance of the system are analyzed theoretically and experimentally. The result shows that the capacitive or inductive component of the load causes the resonant frequency to be offset and affects the transmission performance adversely. The basic reason is that the load impedance results in the variation of equivalent capacitance or inductance in the relay circuit through coupling mapping. When the impedance angle of load is less than zero,the resonant frequency is shifted downward and decreased. With the increase in impedance angle,the frequency offsetand its influence on the transmission performance are gradually diminished. This influence can be ignored when the capacitance increases to a certain value. When the impedance angle is greater than zero,the resonant frequency offset is opposite. With the increase in inductance value,the negative influence is becoming more and more serious,which will eventually destroy the resonant coupling state of the system,causing the failure of setting. The proposed model is proved to be correct,and the theoretical result is consistent with the experimental result.
引文
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[15]薛慧,刘晓文,孙志峰,等.基于磁耦合谐振的无线电能传输系统负载特性研究[J].工矿自动化,2015,41(3):66-70.XUE Hui,LIU Xiao-wen,SUN Zhi-feng,et al. Research of load characteristics of wireless power transmission system based on magnetic coupling resonance[J]. Industry and Mine Automation,2015,41(3):66-70.(in Chinese)
[2]李长生,李炜昕,张合,等.引信用磁耦合谐振系统复杂环境能量损耗分析[J].兵工学报,2014,35(8):1137-1143.LI Chang-sheng,LI Wei-xin,ZHANG He,et al. Research on energy loss of fuze setting system based on magnetic resonant coupling in complex environment[J]. Acta Armamentarii,2014,35(8):1137-1143.(in Chinese)
[3] Kurs A,Karalis A,Moffatt R,et al. Wireless power transfer via strongly coupled magnetic resonances[J]. Science, 2007,317(5834):83-86.
[4] Zeng H L,Yang S T,Peng F Z. Design consideration and comparison of wireless power transfer via harmonic current for PHEV and EV wireless charging[J]. IEEE Transactions on Power Electronics,2017,32(8):5943-5952.
[5] Bojarski M,Asa E,Colak K,et al. Analysis and control of multiphase inductively coupled resonant converter for wireless electric vehicle charger applications[J]. IEEE Transactions on Transportation Electrification,2017,3(1):312-320.
[6] Basar M R,Ahmad M Y,Cho J,et al. An improved resonant wireless power transfer system with optimum coil configuration for capsule endoscopy[J]. Sensors and Actuators A:Physical,2016,249:207-216.
[7]廖翔,李豪杰,张合.坦克炮弹药共用底火装定能量双向隔离系统设计方法[J].兵工学报,2017,38(4):673-678.LIAO Xiang,LI Hao-jie,ZHANG He. Design method of energy isolation system for fuze setting via primer[J]. Acta Armamentarii,2017,38(4):673-678.(in Chinese)
[8]常悦,沈晓军,李杰,等.灵巧弹药感应装定系统基带码型特征分析及应用研究[J].兵工学报,2016,37(6):996-1005.CHANG Yue,SHEN Xiao-jun,LI Jie,et al. Analysis and application research on baseband code characteristics of inductive setting system for smart ammunition[J]. Acta Armamentarii,2016,37(6):996-1005.(in Chinese)
[9]郎需强,陈曦,王伟,等.基于独特码的无源射频装定系统研究[J].兵工学报,2016,37(增刊2):29-35.LANG Xu-qiang,CHEN Xi,WANG Wei,et al. Research on passive radio frequency setting system based on unique signal[J].Acta Armamentarii,2016,37(S2):29-35.(in Chinese)
[10]张剑韬,朱春波,雷阳,等.无线电能传输感性系统特性分析[J].电工技术学报,2015,30(增刊1),303-307.ZHANG Jian-tao,ZHU Chun-bo,LEI Yang,et al. Study on the character of wireless power transfer inductive system[J].Transactions of China Electrotechnical Society,2015,30(S1):303-307.(in Chinese)
[11]王建军,秦琴.随机负载条件下非接触供电系统的自适应调谐方法[J].电力自动化设备,2012,32(10):142-145.WANG Jian-jun,QIN Qin. Adaptive tuning of contractless power transfer system with random loads[J]. Electric Power Automation Equipment,2012,32(10):142-145.(in Chinese)
[12]李阳,张雅希,闫卓,等.磁耦合谐振式无线电能传输系统阻抗分析与匹配电路设计方法[J].电工技术学报,2016,31(2):12-18.LI Yang,ZHANG Ya-xi,YAN Zhuo,et al. Impedance analysis and design of matching circuit in wireless power transfer system via coupled magnetic resonances[J]. Transactions of China Electrotechnical Society,2016,31(2):12-18.(in Chinese)
[13] Barman S D,Reza A W,Kumar N,et al. Two-side impedance matching for maximum wireless power transmission[J]. IETE Journal of Research,2016,62(4):532-539.
[14]陈希有,伍红霞,牟宪民,等.电流型电场耦合无线电能传输技术[J].中国电机工程学报,2015,35(9):2279-2286.CHEN Xi-you,WU Hong-xia,MU Xian-min,et al. The currenttype capacitively coupled wireless power transfer technology[J].Proceedings of the CSEE,2015,35(9):2279-2286.(in Chinese)
[15]薛慧,刘晓文,孙志峰,等.基于磁耦合谐振的无线电能传输系统负载特性研究[J].工矿自动化,2015,41(3):66-70.XUE Hui,LIU Xiao-wen,SUN Zhi-feng,et al. Research of load characteristics of wireless power transmission system based on magnetic coupling resonance[J]. Industry and Mine Automation,2015,41(3):66-70.(in Chinese)