...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Industrial Electronics >Self-Tuning LCC Inverter Using PWM-Controlled Switched Capacitor for Inductive Wireless Power Transfer
【24h】

Self-Tuning LCC Inverter Using PWM-Controlled Switched Capacitor for Inductive Wireless Power Transfer

机译：使用PWM控制的开关电容器自调谐 LCC 逆变器进行感应无线功率传输

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Wireless power transfer with a self-tuning LCC inverter using pulsewidth modulation (PWM) controlled switched capacitor is proposed in this paper in order to compensate for the variations of Tx inductance. Usually, receivers contain magnetic and conductive materials for shielding and mechanical support. The inductance of the Tx coil is sensitive to the variation of Tx-Rx alignment because the interaction between the Tx coil and the Rx magnetic-conductive materials is also varied. It is shown that the detuning of the Tx inductance value exacerbates the losses in the LCC inverter. In the proposed method, the PWM duty ratio of a single capacitor adjusts the effective output impedance of the LCC inverter. The PWM feedback loop is designed such that the power factor and the real-part impedance of the LCC inverter are maximized. The PWM switch is turned ON at zero voltage and turned OFF with low dv/dt, minimizing switching losses. Such a soft-switching tunable capacitor can handle higher power compared to the traditional hard-switching capacitor, p-n junction capacitor, or an analog IC capacitor. Another advantage of the proposed technique is the continuity in achievable capacitance value using only one capacitor. The feedback can be fully implemented by analog components, obviating the necessity of digital samplings, ADC/DACs, and micro-controllers. The power of 54 W is transferred at 76.6% and 60.7% with and without the proposed method, respectively.
机译：为了补偿Tx电感的变化，本文提出了一种采用脉宽调制（PWM）控制的开关电容器的自调谐LCC逆变器进行无线功率传输。通常，接收器包含用于屏蔽和机械支撑的磁性和导电材料。 Tx线圈的电感对Tx-Rx排列的变化很敏感，因为Tx线圈和Rx导磁材料之间的相互作用也发生了变化。结果表明，Tx电感值的失谐加剧了LCC逆变器中的损耗。在所提出的方法中，单个电容器的PWM占空比调整了LCC逆变器的有效输出阻抗。设计PWM反馈环路，以使LCC逆变器的功率因数和实部阻抗最大化。 PWM开关以零电压接通，并以低dv / dt断开，从而将开关损耗降至最低。与传统的硬开关电容器，p-n结电容器或模拟IC电容器相比，这种软开关可调电容器可以处理更高的功率。所提出的技术的另一个优点是仅使用一个电容器就可以实现电容值的连续性。该反馈可以通过模拟组件完全实现，从而消除了数字采样，ADC / DAC和微控制器的必要性。使用和不使用建议的方法，分别以76.6％和60.7％的功率传输54 W功率。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号