永磁电机直驱螺杆泵井杆柱反转能量吸收技术  

Rod String Backspin Energy Consume Technology for Surface Direct-drive Screw Pump Well

作　　者：王帅[1] 张炳义[1] 刘利军[2] 冯桂宏[1] 

机构地区：[1]沈阳工业大学电气工程学院,沈阳110870 [2]沈阳工业大学机械工程学院,沈阳110870

出　　处：《石油矿场机械》2016年第4期1-4,共4页Oil Field Equipment

基　　金：国家高技术研究发展计划(863计划)(2012AA061303);国家自然科学基金项目(51177106)

摘　　要：针对永磁电机直驱螺杆泵井在突然断电的情况下,抽油杆贮存的弹性势能驱动永磁电机高速反转,并导致抽油杆脱断和驱动头零部件飞逸等问题,提出一种永磁电机直驱螺杆泵井杆柱反转能量吸收技术。该技术基于能耗制动原理,利用永磁电机反转发出的电能作为控制电源,根据转速反馈信号,通过调节PWM斩波调阻电路的占空比改变制动电阻阻值,保证在反转速度恒定条件下,实现电机输出制动转矩随反转势能的变化而自动调节的目的,使反转能量低速、柔性释放。通过试验与在井运行的方式验证了该技术的有效性。As permanent magnet synchronous motor (PMSM)direct-drive screw pump well lost power and elastic energy stored in rod drive rod string and PMSM rotated in high speed causing rod break off or serious damage to drive-head,a new technology which controls PMSM rotating at low speed was presented to consume backspin energy.The technology applied dynamic braking method to release the backspin energy super capacitor supply power to the controller.By using PWM chopper adjustable resistance technique,braking torque can be changed according to feed-back of speed in order to release the energy slow and incremental.Finally,experimental and appli-cation verified the effectiveness of the proposed technology.

关 键 词：永磁电机 直驱螺杆泵井 杆柱反转 能量吸收 PWM斩波调阻 

分 类 号：TE931.2[石油与天然气工程—石油机械设备]