双E类放大器在无线充电系统的应用

发布时间：2018-07-03 02:03

本文选题：放大器 + 高频激励源　；参考：《电力电子技术》2017年11期

【摘要】：双E类放大器作为大功率无线充电系统的高频激励源具有更加安全、稳定的性能。首先通过电荷量比较的方法计算得出,在相同电压应力条件下,双E类放大器的输出功率相对于单E类放大器提高到4倍。然后使用相同的方法分别对单E类放大器与双E类放大器进行参数设计和实验数据对比。最后用双E类放大器作为高频激励源,结合串-并联谐振式线圈传输结构,以及电压匹配电路构成完整的无线充电系统,输出给48 V蓄电池充电。在传输距离为6cm的条件下,可达到2 A的充电电流,传输效率为68%。在大功率输入条件下,高频激励源的电压应力较低,实验结果验证了双E类放大器应用在无线电能传输的优越性。
[Abstract]:As a high frequency exciting source of high power wireless charging system, double E amplifier has a more secure and stable performance. First, the method of charge comparison shows that the output power of double E amplifier is 4 times higher than that of single E amplifier under the same voltage stress condition. Then the parameter design and experimental data comparison between single E amplifier and double E amplifier are carried out using the same method. At last, the double E amplifier is used as the high frequency excitation source, combined with the series-parallel resonant coil transmission structure, and the voltage matching circuit to form a complete wireless charging system, which outputs to charge the 48V battery. When the transmission distance is 6cm, the charge current of 2 A can be achieved and the transmission efficiency is 68%. Under the condition of high power input, the voltage stress of high frequency excitation source is low. The experimental results demonstrate the superiority of double E amplifier in radio energy transmission.
【作者单位】：四川大学电气信息学院;
【基金】：四川省科技支撑计划(16ZC1395)~~
【分类号】：TM724;TN722

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