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- 2015
超声振动系统非接触式高效电能传输的电路补偿
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Abstract:
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。
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.
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