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，人们对减少能源需求的采油能力产生了浓厚的兴趣。提高常规采油效率的一种选择是在井下泵中使用永磁同步电机（PMSM）。在地面上，PMSM的控制算法通常需要使用编码器或基于观测器的无传感器控制算法。永磁同步电机无传感器控制通常需要高频信号注入、谐波识别或反电动势检测方法中的一种。在潜式井下应用中，驱动电机可以与地面的变速驱动器保持相当大的距离；在连接到电机电缆之前，驱动器的输出必须经过滤波并通过隔离升压变压器。不幸的是，现有的PMSM控制方法在这种情况下不起作用。