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Linear Electric Submersible Pump is a new industrial solution in artificial lift applications. Linear motors are placed downhole to drive the reciprocating pump directly. This system is intended to overcome some of the sucker rod pump limitations. The new configuration will allow implementation in deviated and off-shore oil wells. Integrated Drive-Motor technology shows many promising advantages....
A sensorless control method of a tubular linear permanent magnet motor is presented. The sensorless algorithm is based on back-EMF estimation and consists of two observer stages. First, the back-EMF vector is estimated using a modified disturbance observer. Next, a Phased Locked Loop (PLL) tracking observer is implemented to extract the position from the back-EMF vector. The algorithm does not require...
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