CAJ | 학술논문

针对在磁耦合谐振式无线电能传输系统中角度偏转是否会对接收电能产生影响的问题，首先利用空间两空心线圈的互感耦合理论和等效电路分析无线电能传输系统的频率特性，得到归一化电压的频率响应曲线和电能无线传输的必要条件。然后根据空间任意放置的空心线圈的耦合系数与方向的关系分析方向改变对耦合因数的影响，提出系统在过耦合、临界耦合和欠耦合三种状态下的方向特性。最后，设计了实验电路并进行了相关的实验研究，实验结果与理论分析具有较好的一致性，验证了无线电能传输系统中方向性的问题。本文关于方向性的分析为移动设备的无线电能传输系统设计和参数优化提供有益的参考。
침대재자우합해진식무선전능전수계통중각도편전시부회대접수전능산생영향적문제，수선이용공간량공심선권적호감우합이론화등효전로분석무선전능전수계통적빈솔특성，득도귀일화전압적빈솔향응곡선화전능무선전수적필요조건。연후근거공간임의방치적공심선권적우합계수여방향적관계분석방향개변대우합인수적영향，제출계통재과우합、림계우합화흠우합삼충상태하적방향특성。최후，설계료실험전로병진행료상관적실험연구，실험결과여이론분석구유교호적일치성，험증료무선전능전수계통중방향성적문제。본문관우방향성적분석위이동설비적무선전능전수계통설계화삼수우화제공유익적삼고。
In order to confirm whether the angle deflection will influence the power of receiver coils in wireless power transfer system, the characteristic of orientation in wireless power transfer system is analyzed by the coupling model of two spatial isolated coils and its equivalent circuit firstly, and then yielded the frequency response curve of normalized voltage in the receiver coils and necessary condition for wireless power transfer. Characteristic of orientation in the case of overcoupling, critical coupling and undercoupling was presented after the effect to coupling factor is analyzed by orientation deflection according to the relationship between the coupling coefficient of two spatial isolated coils and orientation. In the end, experiment circuit is designed and experimental results are well consistent with the theoretical analysis, which shows the correctness of the proposed method and its result. Thus provides an useful reference for the design of wireless power transfer system for mobile device and its parameters optimization.