Abstract
AbstractA supply and demand balance control method for an electrical submersible linear motor utilised in offshore oil exploitation is proposed in this study. The permanent magnet linear motor is replaced by an electrical submersible linear motor based on switched reluctance linear motor. The sensorless control method further enhances the stability of the oil exploitation system. Meanwhile, a supply and demand balance control method is proposed to maintain the fullness of the submersible plunger pump within an ideal range. An established speed function allows the speed of the electrical submersible linear motor to dynamically alter in response to the change in oil deliverability and increasing the system's production. Additionally, maintaining the fullness of the submersible plunger pump within the ideal range helps simplify the model and increase computation accuracy. Finally, the supply and demand balance control method is validated and compared with the intermittent oil exploitation control method by simulations and experiments. Results from the simulations and experiments indicate that the proposed method can increase the production of the offshore oil exploitation system in addition to causing the motor to follow changes in oil deliverability and adjust the speed.
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