采用非接触电流相位互感器的自激式非接触谐振变换器

发布时间：2018-01-05 15:44

本文关键词：采用非接触电流相位互感器的自激式非接触谐振变换器　出处：《中国电机工程学报》2014年24期 　论文类型：期刊论文

【摘要】：自激控制方法由于控制方法简单、对系统参数变化响应速度快,在非接触供电系统中存在广阔的应用前景。该文由完全补偿条件下非接触变换器中逆变器电压与副边电流同相的特殊关系,引入转移阻抗的概念,分析并提出适用于串/串补偿非接触谐振变换器的自激控制方法。为在变换器原边实现副边电流相位的检测,保证变参数条件下检测的准确性和快速性,提出测试绕组短路的非接触电流相位互感器。此外,为保证自激控制的准确,对非接触电流相位互感器及控制回路中寄生参数造成的相位延迟进行分析和补偿。最后,制作完成一台60 W的采用非接触电流相位互感器的自激式非接触谐振变换器。实验结果表明,非接触电流相位互感器能够准确检测副边电流相位并反馈至原边,自激控制方法则可以通过检测副边电流过零点控制逆变器开关管,使得变换器在变参数条件下自动工作在电压增益恒定的频率点。设计的动态实验也证明了所述自激控制方法能在一周期内响应变换器参数变化。
[Abstract]:Due to the simplicity of the control method, the self-excited control method can respond quickly to the change of system parameters. There is a broad application prospect in contactless power supply system. In this paper, the concept of transfer impedance is introduced based on the special relationship between inverter voltage and side current in the contactless converter under the condition of complete compensation. In order to realize the phase detection of the secondary current in the original side of the converter, the accuracy and rapidity of the detection can be guaranteed by analyzing and proposing a self-excitation control method suitable for the series / string compensated non-contact resonant converter. A non-contact current phase transformer is proposed to test the short circuit of the winding. In addition, in order to ensure the accuracy of self-excitation control. The phase delay caused by parasitic parameters in contactless current phase transformer and control loop is analyzed and compensated. Finally. A 60W self-excited non-contact resonant converter using contactless current phase transformer is fabricated. The contactless current phase transformer can accurately detect the secondary current phase and feed back to the original edge, and the self-excited control method can control the inverter switch tube by detecting the secondary current over 00:00. The converter operates automatically at the frequency point of constant voltage gain under the condition of variable parameters. The dynamic experiment also proves that the self-excited control method can respond to the converter parameter change in one period.
【作者单位】：江苏省新能源发电与电能变换重点实验室(南京航空航天大学);
【基金】：国家自然科学基金项目(51077069) 江苏省自然科学基金项目(BK2009372) 高等学校博士学科点专项科研基金(20103218110013)~~
【分类号】：TM46
【正文快照】： 0引言非接触供电是基于磁场耦合实现“无线供电”的新型电能传输模式,由于其供电无需物理连接,该系统在人体植入设备场合[1-2],在油田、矿井、水下供电等环境恶劣场合[3-5]具有很大的优势。同时,手机、电动汽车等移动设备的采用[6-11],带来了电池充电问题,也给非接触供电系统

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