适用于旋转导向钻井工具的非接触式电能传输方法

Contactless power transmission method for rotary steering drilling tool

结合旋转导向钻井工具设计的需求,对在旋转件与非旋转件之间进行电能传输的方法进行了研究,提出了利用瞬态电磁功率脉冲进行非接触式电能传输的方法。采用小体积、高电压、大电流器件提高了发射电流,建立了相关的理论模型,采用罗果夫斯基线圈对发射电流进行了测量,通过合理调整电阻、电容等参数,使发射电流峰值达到8kA,提高了发射能量的密度,为高效率的电磁耦合提供了基础。

For the design of rotary steering drilling tool, the power transmission method between the rotating part and non-rotating part is studied and the contactless power transmission with the transient pulse of electromagnetic is presented. The use of small volume, high-voltage, high current devices enhance the emission current, and the theoretical model is established. Rogowski coil is used to measure the emission current. Through reasonable adjustment of resistors, capacitors and other parameters, the peak of emission current reached 8 kA, which enhances the energy density of emission current and provides the basis for high-efficiency electromagnetic coupling.