Load Filter Design Method for Medium-Voltage Drive Applications in Electrical Submersible Pump Systems

Liang, Xiaodong; Kar, Narayan C.; Liu, Joe

doi:10.1109/tia.2014.2369814

Cited by 22 publications

(8 citation statements)

References 24 publications

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“…A VSD can control the submersible electrical motor at a speed that the well produces with the greatest efficiency and keeps the ESP within its best efficiency range [8]. The VSDs also offer soft motor starting for ESP systems and reduce the impact to power grid during the motor start-up [20]. The drive allows the pump to be operated continuously or intermittently or be shut off in the event of a significant operational problem.…”

Section: A Esp Experimental Setupmentioning

confidence: 99%

Downhole Telemetry Systems to Monitor Electric Submersible Pumps Parameters in Oil Well

et al. 2021

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The electrical submersible pump (ESP) is widely used in the oil industry as an artificial lift method in deep wells, and its primary application of ESP is to increase the oil flow rate. Information such as the pump intake and discharge pressure, the oil reservoir and motor winding temperature, etc., provide critical data necessary to ensure proper ESP system operation and optimize production. In this paper, an ESP downhole parameter monitoring system is proposed. Potentiometers are used to generates analog signals, emulating the analog sensors. The information is sent up to the surface based on the current loop through the same power cable by DC signals overlapping to AC signals in the proposed design. The article details the construction of the communication protocol and electronic circuits used in telemetry. The tests were carried out in an oil-producing company to validate the proposed telemetry system's reliability and accuracy. The good results of the robust design demonstrated it to be a promising downhole sensor for industrial applications.

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Section: A Esp Experimental Setupmentioning

confidence: 99%

Downhole Telemetry Systems to Monitor Electric Submersible Pumps Parameters in Oil Well

et al. 2021

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“…In the following a Luenberger observer is designed for the system described by (1). Since the VSI output voltages are generally not measured, the following assumption shall hold: Assumption 5 (Inverter output voltage).…”

Section: B Luenberger Observer With Gain-schedulingmentioning

confidence: 99%

“…ûdq f ≈ u dq f holds. In view of Assumption 5, the observer dynamics are similar to (1) and can be stated as…”

Section: B Luenberger Observer With Gain-schedulingmentioning

confidence: 99%

“…I N medium-voltage variable-speed drive applications with long power cables (e.g. large pumping systems), an inverter output (load) LC filter is often employed as to (i) decrease voltage deflection at the motor terminals, due to impedance imbalance between the cable and the motor, and to (ii) reduce steep voltage slopes which might damage the motor insulation and bearings due to high capacitive discharge [1]- [3].…”

Section: Introductionmentioning

confidence: 99%

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Speed-sensorless state feedback control of induction machines with LC filter

Kullick,

Hackl

2018

Preprint

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A speed-sensorless state feedback controller for induction machines (IMs) with LC filter is proposed. The estimation of speed and remaining states is based on a speed-adaptive observer, requiring only the measurement of the filter input currents. The motor currents are controlled by a state-feedback controller with proportional and integral control action to achieve fast and asymptotic set point tracking. Observer and controller gains are calculated offline using linear quadratic regulator (LQR) theory and updated online (gain-scheduling), in order to guarantee stability and improve control performance in the whole operation range. The proposed control scheme is validated by simulation and experimental results including several zerocrossings of the mechanical speed. It is shown that the overall control system performs well under various load-and speed conditions; while its tuning remains easy making it attractive also for industrial application.

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“…In the actual production of deep-sea oil fields, this equipment is installed at the up to 7000m in depth bottom of subsea oil wells for oil extraction, and is driven by the inverter via long transmission cable of ranging from several kilometers to tens of kilometers [2]. The inverter can control the ESP to a speed that better produces the well and keeps the ESP within its best efficiency range, also offer soft motor starting for ESP systems and reduce impact to power grid during the ESP systems start-up [3]. Hence, the inverter are widely used in oil field facilities, some newer facilities could have up to 80% loads supplied power by Inverter.…”

Section: Introductionmentioning

confidence: 99%

Research on Power Supply Scheme of Electrical Submersible Pump Fed by Inverter Based on Long Cable

Yonghong

Zhang

2019

MATEC Web Conf.

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Electrical submersible pump (ESP) require remote operation of inverter via a long cable. The conventional control algorithm of inverter does not operate effectively. In this paper, a new power supply scheme is proposed, namely: Inverter - Motor - Generator - Transformer – Long Cable - ESP power supply program, referred to as IMGEESP power supply system. Based on the analysis of the IMGEESP, the model of the long cable was established, the functional relationship between inverter and smart power of the IMGEESP was deduced, so that the voltage model is constructed. The frequency converter and the intelligent power supply of IMGEESP are coordinated and controlled according to the speed command of the ESP and the cable length. Simulation results verifies the correctness and effectiveness of the proposed IMGEESP.

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Load Filter Design Method for Medium-Voltage Drive Applications in Electrical Submersible Pump Systems

Cited by 22 publications

References 24 publications

Downhole Telemetry Systems to Monitor Electric Submersible Pumps Parameters in Oil Well

Downhole Telemetry Systems to Monitor Electric Submersible Pumps Parameters in Oil Well

Speed-sensorless state feedback control of induction machines with LC filter

Research on Power Supply Scheme of Electrical Submersible Pump Fed by Inverter Based on Long Cable

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