| 超声振动系统非接触式高效电能传输的电路补偿 |
| 申昊, 冯平法, 张建富, 郁鼎文, 吴志军 |
| 清华大学 机械工程系, 精密超精密制造装备及控制北京市重点实验室, 北京 100084 |
| Circuit compensation for efficient contactless power transmission in ultrasonic vibration systems |
| SHEN Hao, FENG Pingfa, ZHANG Jianfu, YU Dingwen, WU Zhijun |
| Beijing Key Laboratory of Precision/Ultra-Precision Manufacturing Equipments and Control, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China |
摘要:
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| 摘要为提高超声振动系统的非接触式电能传输效率, 对系统的电路补偿网络进行了研究和设计。结合压电振子的等效电路和松耦合系统的互感模型, 阐明了电路补偿的理论依据, 提出各自独立地对原、副边回路进行补偿, 以消除互感的影响。结合理论和仿真计算的结果, 设计并建立了超声振动系统非接触式电能传输的电路补偿网络。对系统的输出振幅进行实验测量, 结果显示: 补偿后的振幅得到了大幅提升, 且气隙值越大、电功率越大, 补偿效果越显著。对于超声振动系统的非接触式电能传输, 所建立的补偿方法能够显著地减小无功损耗, 提高能量传输效率, 补偿网络设计合理、有效。 | |||
| 关键词 ：超声振动系统,非接触式电能传输,互感模型,等效电路,电路补偿,超声振幅 | |||
| Abstract：Circuit compensation was used to improve the contactless power transmission efficiency in ultrasonic vibration systems. The circuit compensation model was based on an equivalent circuit model of the piezoelectric vibrator and a mutual inductance model of the loosely coupled system. The primary and secondary circuits were independently compensated to eliminate the effects of the mutual inductance. A system was built with test showing that the amplitudes were significantly improved by the compensation, especially for large air gaps and large power loads. This study indicates that circuit compensation effectively reduces the reactive power losses and improves the power transmission efficiency of the contactless power transmission in ultrasonic vibration systems. | |||
| Key words：ultrasonic vibration systemcontactless power transmissionmutual inductance modelequivalent circuitcircuit compensationultrasonic amplitude | |||
| 收稿日期: 2014-09-05 出版日期: 2015-09-18 | |||
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| 通讯作者:冯平法,教授,E-mail:fengpf@mail.tsinghua.edu.cnE-mail: fengpf@mail.tsinghua.edu.cn | |||
| 引用本文: |
| 申昊, 冯平法, 张建富, 郁鼎文, 吴志军. 超声振动系统非接触式高效电能传输的电路补偿[J]. 清华大学学报（自然科学版）, 2015, 55(7): 728-733. SHEN Hao, FENG Pingfa, ZHANG Jianfu, YU Dingwen, WU Zhijun. Circuit compensation for efficient contactless power transmission in ultrasonic vibration systems. Journal of Tsinghua University(Science and Technology), 2015, 55(7): 728-733. |
| 链接本文: |
| http://jst.tsinghuajournals.com/CN/或 http://jst.tsinghuajournals.com/CN/Y2015/V55/I7/728 |
图表:
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| 图1 非接触式超声振动系统结构示意图 |
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| 图2 压电振子等效电路[13] |
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| 图3 非接触式超声振动系统互感模型 |
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| 图4 原、副边磁芯和线圈 |
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| 图5 磁通密度分布云图(气隙3mm) |
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| 表1 不同气隙值下的互感电路参数 |
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| 图6 原边串联、副边串联补偿网络 |
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| 图7 含有电路补偿网络的超声振动系统 |
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| 图8 位移数据频谱图 |
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| 图9 位移数据散点图及正弦拟合曲线 |
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| 图10 振幅气隙曲线 |
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| 图11 提升比例气隙曲线 |
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