Sensorless control for galvanically isolated PMSM submersible pumps

用于电隔离 PMSM 潜水泵的无传感器控制

• 批准号: 436633-2012
• 负责人: Knight, Andrew
• 金额: $ 1.82万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=511489
• 关键词: Sensorless; control; galvanically; isolated; PMSM

Recently, there has been significant interest in the ability to recover oil with reduced energy requirements. One option to improve the efficiency of conventional oil recovery is the use of permanent magnet synchronous motors (PMSM) in downhole pumps. Above ground, control algorithms for PMSM typically require the use of encoders or observer-based sensorless control algorithms. PMSM sensorless control typically requires one of high frequency signal injection, harmonic identification or back-emf detection methods. In submersible downhole applications, the drive motor can be a significant distance from the variable speed drive on the surface; the output of the drive must be filtered and pass through an isolation step-up transformer before connecting to the motor cable. Unfortunately, existing PMSM control methods do not work in this case.

最近，人们对以减少能源需求减少的石油的能力引起了重大兴趣。提高常规石油回收效率的一种选择是在井下泵中使用永久磁铁同步电动机（PMSM）。在地面上，PMSM的控制算法通常需要使用编码器或基于观察者的无传感器控制算法。 PMSM无传感器控制通常需要高频信号注入，谐波识别或反emf检测方法之一。在潜水的井下应用中，驱动电动机可以与表面的可变速度驱动器有很大距离。在连接到电机电缆之前，必须对驱动器的输出进行过滤，并通过隔离的升压变压器。不幸的是，在这种情况下，现有的PMSM控制方法不起作用。