旋转导向钻井工具发电机电磁转矩控制及其优化

doi:10.7623/syxb201106020

石油学报 ›› 2011, Vol. 32 ›› Issue (6): 1055-1060.DOI: 10.7623/syxb201106020

旋转导向钻井工具发电机电磁转矩控制及其优化

金金程为彬郭颖娜

西安石油大学陕西省钻机控制技术重点实验室陕西西安 710065

收稿日期:2011-04-28 修回日期:2011-08-19 出版日期:2011-11-25 发布日期:2012-01-17
通讯作者: 金金
作者简介:金金，女，1987年10月生，2009年毕业于西安石油大学，现为西安石油大学在读硕士研究生，主要从事电力电子与电力传动的研究。
基金资助:
陕西省教育厅专项科研基金（09JK687）和西安石油大学研究生创新基金（YS37030503）联合资助。

Control and optimization of the generator electromagnetic torque of rotary steering drilling tools

JIN Jin CHENG Weibin GUO Yingna

Received:2011-04-28 Revised:2011-08-19 Online:2011-11-25 Published:2012-01-17

摘要/Abstract

摘要：

全旋转导向钻井工具的导向功能是通过调节其下涡轮发电机输出电磁转矩实现的。根据PWM斩波型控制电路模型，推导出旋转导向钻井工具涡轮发电机电磁转矩的数学表达式，通过数值计算确定了电磁转矩与控制量之间的关系，并进行了台架试验验证。从电机磁场储能角度讨论了发电机输出脉动转矩产生的内在原因及其计算方法，并在斩波型控制电路中引入有源功率因数校正技术，设计了一种可提高功率因数和电路稳定性的优化控制电路。试验测试结果表明，斩波优化控制电路消除了谐波脉动转矩，在增强电路稳定性的同时也增加了电磁转矩的调节范围。

关键词: 旋转导向钻井工具, 涡轮发电机, 转矩控制, 斩波电路, 优化

Abstract:

Steering function of all-rotary steering drilling tools is achieved through adjusting electromagnetic torque of the downhole turbine generator. Through the control circuit model in a pulse-width-modulation (PWM) chop mode, the mathematical expression of electromagnetic torque of rotary steering drilling tools was deduced. A relationship between electromagnetic torque and control factors was established by means of numerical calculation and verified by bench test. The internal cause of ripple torque from a generator and its calculation were discussed in terms of magnetic energy storage and an active power factor calibration was introduced into the chopper control circuit. An optimized chopper control circuit was designed, which can improve power factors and circuit stability. The test result shows that the optimized chopper control circuit can eliminate harmonic ripple torque and enhance the stability of circuit while increasing the adjustment range of electromagnetic torque.

Key words: rotary steering drilling tool, turbine generator, torque control, chopper circuit, optimization

金金程为彬郭颖娜. 旋转导向钻井工具发电机电磁转矩控制及其优化[J]. 石油学报, 2011, 32(6): 1055-1060.

JIN Jin CHENG Weibin GUO Yingna. Control and optimization of the generator electromagnetic torque of rotary steering drilling tools[J]. Editorial office of ACTA PETROLEI SINICA, 2011, 32(6): 1055-1060.

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旋转导向钻井工具发电机电磁转矩控制及其优化

Control and optimization of the generator electromagnetic torque of rotary steering drilling tools

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