WO2016178667A1 - Gestion des défaillances dans des moteurs polyphasés - Google Patents

Gestion des défaillances dans des moteurs polyphasés Download PDF

Info

Publication number
WO2016178667A1
WO2016178667A1 PCT/US2015/029169 US2015029169W WO2016178667A1 WO 2016178667 A1 WO2016178667 A1 WO 2016178667A1 US 2015029169 W US2015029169 W US 2015029169W WO 2016178667 A1 WO2016178667 A1 WO 2016178667A1
Authority
WO
WIPO (PCT)
Prior art keywords
group
windings
phase
motor
fault
Prior art date
Application number
PCT/US2015/029169
Other languages
English (en)
Inventor
Souvik DASGUPTA
Maksim RADOV
Original Assignee
Schlumberger Canada Limited
Services Petroliers Schlumberger
Schlumberger Technology B.V.
Schlumberger Technology Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schlumberger Canada Limited, Services Petroliers Schlumberger, Schlumberger Technology B.V., Schlumberger Technology Corporation filed Critical Schlumberger Canada Limited
Priority to PCT/US2015/029169 priority Critical patent/WO2016178667A1/fr
Publication of WO2016178667A1 publication Critical patent/WO2016178667A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/0822—Integrated protection, motor control centres
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/28—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus

Definitions

  • Electric motors may be used for a variety of purposes at a well site.
  • an electric motor e.g. electric submersible pumps or ESPs
  • ESPs electric submersible pumps
  • a ground fault or inter-phase short may prevent proper operation of the motor.
  • Electric motors operate with multi-phase balanced supply in the stator to generate air-gap rotating magnetic field. If a ground fault is present in multiple phases of the motor, there may be a short circuit between the grounded phases through the ground. In a direct inter-phase short between the windings, circulating current is created with a higher magnitude, which may result in severe unbalance in the motor currents producing vibration, noise.
  • VSD variable-speed drive
  • a motor providing multiple phases may provide two phase groups of windings with each of the phase groups providing windings for the multiple phases of the motor.
  • the windings of these phase groups may be coupled to common terminals for each phase.
  • the motor may also include several disconnection switches for the two phase groups of windings. The disconnection switches may be associated with a particular phase group and a specific phase of the motor. When a fault is detected in the motor, disconnection switches corresponding to one of the phase groups are switched to an opened state to allow the motor to operate in spite of the detected fault. For example, the current at the start and end of a winding may be compared to determine if there is a difference in the current, thereby indicating that a fault is present.
  • fault(s) may be detected by using current difference detectors or differential current transformers (DCTs) that monitor the current at the start and end of a winding.
  • the motor may be the motor of an electric submersible pump (ESP) deployed in a wellbore.
  • the ESP may be coupled to a power cable provided at a surface of the well.
  • Figure 1 illustrates a motor under healthy operation in accordance to an aspect of the disclosure.
  • Figure 2 illustrates a motor operating with an inter-phase fault in accordance to an aspect of the disclosure.
  • Figure 3 illustrates an electric submersible pump system deployed in a wellbore in accordance to one or more aspects of the disclosure.
  • Figure 4 illustrates a multi-phase motor with multiple phase group windings and disconnection switches in accordance to an aspect of the disclosure.
  • Figure 5 illustrates an inter-phase fault between phase-a and phase-b in the same phase group in accordance to an aspect of the disclosure.
  • Figure 6 illustrates a schematic of an inter-phase fault between phase-a and phase-b in different phase groups in accordance to an aspect of the disclosure.
  • Figure 7 illustrates a disconnection switch combined with a current sensor and control switch in accordance to an aspect of the disclosure.
  • Figure 8 illustrates a schematic of control logic to operate disconnection switches of a first phase group in accordance to an aspect of the disclosure.
  • Figure 9 illustrates a schematic of control logic to operate disconnection switches of a second phase group in accordance to an aspect of the disclosure.
  • Figure 10 illustrates a control switch in accordance to an aspect of the disclosure.
  • Figure 1 1 illustrates a differential current transformer in accordance to an aspect of the disclosure.
  • Figure 12 illustrates operation of a motor with an inter-phase fault between phase-a and phase-b in the same phase group in accordance to an aspect of the disclosure.
  • Figure 13 illustrates operation of a motor with an inter-phase fault between phase-a and phase-b in different phase groups in accordance to an aspect of the disclosure.
  • Figure 14 illustrates an inter-phase fault between two phases and two phase groups in accordance to an aspect of the disclosure.
  • Figure 15 illustrates an operating state of a motor in response to the inter-phase fault in accordance to an aspect of the disclosure.
  • Figure 16 illustrates a control logic for operating disconnection switches when multiple faults are present in multiple phase groups in accordance to an aspect of the disclosure.
  • Figure 17 show a schematic of an arrangement for gauge connection.
  • connection, connection, connected, in connection with, and connecting are used to mean in direct connection with or in connection with via one or more elements; and the terms couple, coupling, coupled, coupled together, and coupled with are used to mean directly coupled together or coupled together via one or more elements.
  • couple, coupling, coupled, coupled together, and coupled with are used to mean directly coupled together or coupled together via one or more elements.
  • up and down; upper and lower; top and bottom; and other like terms indicating relative positions to a given point or element are utilized to more clearly describe some elements. Commonly, these terms relate to a reference point as the surface from which drilling operations are initiated as being the top point and the total depth being the lowest point, wherein the well (e.g., wellbore, borehole) is vertical, horizontal or slanted relative to the surface.
  • Figures 1 and 2 are schematic illustrations of an electric circuit of a motor for example in a submersible pumping system, generally denoted by the numeral 20.
  • a motor 24 is electrically connected to a power source 50 through an electrical conductor 44.
  • Power source 50 may for example be a variable speed drive.
  • Figure 1 illustrates the three-phase motor 24 under healthy operation. However, if there is ground fault in two of the three-phase motor stator winding, an internal current flowing loop can be created, as this multi-phase ground fault manifests as inter-phase fault in the motor.
  • Figure 2 illustrates the motor 24 under inter-phase fault in phase-a and phase-b, illustrated by the dashed line 52.
  • a closed loop can be created with a direct inter-phase short circuit fault.
  • the ground faults or inter-phase short circuits can result in huge asymmetry in three-phase currents, e.g. i a , and i c . This may lead to vibration and extra thermal loss in the motor/cable resulting in undesirable extra heating.
  • a surface power supply 50 may trip due to over current. Additionally, the system may not restart due to overcurrent from the fault.
  • a motor may provide multiple phase groups of windings.
  • the multiple phase groups may be fed from the same motor lead or terminal.
  • the methods and apparatuses may perform an automatic feed disconnection of one of the phase groups at the advent of a fault in any of the phase groups, thereby clearing the short.
  • the automatic disconnect feature may be provided by disconnection switches coupled to the phase groups. With the automatic disconnection features when a fault present, the motor will be able to continue operating with one phase group of stator windings even with the fault.
  • ESPs electric submersible pumps
  • the ESPs in such examples may be replaced by any suitable motor, including motors utilized in other types of well equipment or tools.
  • Submersible pumping system 20 may comprise a variety of components depending on the particular application or environment in which it is used. Examples of components utilized in pumping system 20 comprise at least one submersible pump 22, at least one submersible motor 24, and one or more motor protectors 26 that are coupled together to form the submersible pumping system.
  • submersible pumping system 20 is designed for deployment in a well 28 within a geological formation 30 containing desirable production fluids, such as petroleum.
  • a wellbore 32 is drilled into formation 30, and, in at least some applications, is lined with a wellbore casing 34.
  • Perforations 36 are formed through wellbore casing 34 to enable flow of fluids between the surrounding formation 30 and the wellbore 32.
  • Submersible pumping system 20 is deployed in wellbore 32 by a deployment system 38 that may have a variety of configurations.
  • deployment system 38 may comprise tubing 40, such as coiled tubing or production tubing, connected to submersible pump 22 by a connector 42.
  • Power is provided to the at least one submersible motor 24 via a power cable 44.
  • the submersible motor 24 powers submersible pump 22 which can be used to draw in production fluid through a pump intake 46.
  • a plurality of impellers is rotated to pump or produce the production fluid through, for example, tubing 40 to a desired collection location which may be at a surface 48 of the Earth.
  • an ESP motor may be coupled to a 3 -phase power signal via a balanced inductor network having a neutral, ungrounded node, which may be referred to as a "wye node” or "wye point" of the ESP motor.
  • Voltage and current levels of the 3 -phase AC power signal provided by a power supply to an ESP motor may be, for example, of the order of several kilovolts or more and tens of amperes or more, and the signal may oscillate at a frequency on the order of about 60 Hz.
  • VSD variable-speed drive
  • a VSD unit can include an ESP controller (e.g. UniConnTM controller marketed by Schlumberger Limited Houston, Texas).
  • a VSD unit with an ESP controller may allow for varying motor speed, which may in turn provide better management of power, heat, or the like.
  • an ESP may be deployed with one or more sensors (e.g., a gauge or gauges). Communication of information with other equipment may occur via a power cable, such as in deep wells where the length of a cable or cables may be on the order of several kilometers.
  • the illustrated submersible pumping system 20 is only one example of many types of submersible pumping systems that can benefit from the features described herein.
  • other components can be added to the pumping system, and other deployment systems may be used.
  • the production fluids may be pumped to the collection location through tubing 40 or through the annulus around deployment system 38.
  • the submersible pump or pumps 22 also can utilize different types of stages, such as mixed flow stages or radial flow stages.
  • a motor may be any suitable multi-phase motor.
  • the motor may be driven by a multi-phase power supply providing a multi-phase AC power signal.
  • the motor may provide multiple phase groups for the multi-phase windings.
  • Each of the phase groups may provide windings for each of the different phases provided by the multi-phase motor.
  • the motor may provide two phase groups of three-phase windings.
  • the motor may provide an automatic disconnect feature that is triggered by a fault, such as ground fault or inter-phase fault, in any of the phases in any of the phase groups.
  • the faults may be detected comparing the current at the start and the end of a winding. When a motor is operating properly, the currents at the start and end may be the same. However, when the current at the start and end of the winding is different, a fault may be present in the winding.
  • the faults may be detected utilizing current difference detectors or differential current transformers (DCTs).
  • DCTs differential current transformers
  • the automatic disconnect feature may disconnect one of the multiple phase groups when a fault is detected, and as a result, it clears the short circuit and allows the motor to continue operating with one phase group.
  • the automatic disconnect feature may implemented utilizing one or more disconnection switches, controlled switches, intelligent fuses, or the like.
  • the control logic of the switching may be implemented using downhole gauge or any other downhole control unit.
  • the switching may be based on the extra thermal generation due to a short circuit.
  • Figure 4 illustrates a multi-phase motor 24 with automatic disconnect features.
  • the motor provides a stator that has two phase groups 410-1 and 410-2, where each phase group has three-phase windings 420-1 and 420-2.
  • Group 1 Phase-a: aiNi, Phase-b: biNi, Phase-c: CiNi; and Group 2: Phase-a: a 2 N 2 , Phase-b: b 2 N 2 , Phase-c: c 2 N 2 .
  • each phase of the phase group 410-1 and 410-2 may be coupled to a common motor lead or terminal (e.g. a, b, or c).
  • Each phase of the phase groups 410-1 and 410-2 provides automatic disconnect features 430-1 and 430-2.
  • automatic disconnection features 430-1 and 430-2 corresponding to each of the phase groups 410-1 and 410-2 may be provided at the start and end of the windings for each phase.
  • the automatic disconnect features 430-1 and 430-2 may be provided using disconnection switches.
  • the automatic disconnect features 430-1 and 430-2 may be provided by disconnection switches S xyz , such as controlled switch, intelligent fuse, or the like.
  • the first subscript 'x' indicates the phase a, b or c; second subscript 'y' indicates the phase group 1 or 2; and last subscript 'z' indicates whether the switch is at the start (1) or end (2) of the winding. For example, Sb22 is placed at phase-b, group-2 at the end (2) of the winding.
  • a similar nomenclature is utilized for currents at each disconnection switch i xyz where, as before, the subscripts represent the phase, phase group, and start/end of a winding respectively.
  • the features of the different phase group windings may include one or more of the following: (1) the same phase of each phase group winding placed in the same slot or different slot of the stator; the neutral point of the two phase group winding Ni and N ? are not connected; (3) each phase of each phase group may be designed for three-phase currents at the motor-cable terminal (e.g. i a , h and i c at terminals a, b, and c in Figure 4); and (4) the disconnection switch S xyz can be a controlled switch, intelligent fuse, or the like.
  • the same phase of each phase group winding may be placed in the same slot or different slot of the stator.
  • each phase of each phase group may be designed for three-phase currents at the motor-cable terminal (e.g. i a , h and i c at terminals a, b, and c in Figure 4).
  • each phase current at a winding for one phase may be approximately half of the motor-cable terminal current.
  • the entire current at the motor-cable terminal may run through the winding for one phase.
  • the disconnection switch S xyz can be a controlled switch, intelligent fuse, or the like.
  • the automatic disconnect features may disconnect one of the phase groups when a fault present so that motor can continue operation with the remaining connected phase group of windings.
  • Figures 5 and 6 illustrate two types of inter-phase faults in multi-phase motor 24. Both illustrations show a fault between phase-a and phase-b of a three-phase motor, with Figure 5 showing a fault 512 within the same phase group and Figure 6 showing a fault 612 between two different phase groups.
  • disconnection switch may be a controlled switch or 'intelligent fuse.' When a controlled switch is utilized, operation may be controlled in accordance with the current passing through the switch. Whenever a fault (e.g.
  • FIG. 7 shows a schematic of a controlled switch based disconnection switch.
  • control switch S xyz or 5
  • Each control switch may sense the current thorough it and may send the current sensor output 718 to a controller.
  • Figures 8 and 9 are schematic illustrations of operational logics for disconnection switches in the system.
  • Reference number 7 denotes an "and” gate, number 9 an “or” gate, and number 11 a “not” gate.
  • Disconnection switches corresponding to one phase group windings may be operated with a common control signal, e.g., S y .
  • Figure 8 illustrates a control logic 800 for disconnection switches in Phase Group 1. Currents at the start and end of windings of each phase (e.g. i a ii and i a n) are paired together and fed to current difference detectors 818. An output (e.g.
  • the outputted control signal e.g. Sy
  • the outputted control signal may trigger the opening of the disconnection switches of phase group.
  • Figure 9 illustrates control logic 900 for disconnection switches in Phase Group 2.
  • the arrangement is similar to the control logic for Phase Group 1 , but with current difference detectors 918 being fed with currents at the start and end of windings of each phase for Phase Group 2.
  • a delay 922 may be provided before opening the disconnection switches of one of the phase groups. In the case of inter-phase fault between two phase groups (e.g. see Figure 5), this prevents both sets of disconnection switches for the two phase groups from both being opened at the same time.
  • control logic may compare the control signals for the phase groups and open the switches for group 1 when there is an inter-phase fault between phase groups.
  • control logic may be modified so that switches for group 2 may be opened when there is an inter-phase fault between phase groups.
  • another set of control logic may be provided to latch Si or 3 ⁇ 4 to zero once any of these becomes zero to ensure the same fault does not return again.
  • Figures 10 and 11 respectively illustrate a controlled switch 13 used as a disconnection switch, and a differential current transformer (DCT) for detecting a fault.
  • DCT differential current transformer
  • simple switches and DCTs may be utilized to provide the control logic.
  • the controlled switch 13 based disconnection switch 1016 may be simple control switch receiving control signal S y .
  • the DCT 1 124 ( Figure 11) may detect whether a fault is present in a particular phase (e.g. phase-a of group 1).
  • DCTs 1124 may be used in place of the current difference detectors described with reference to Figures 8 and 9.
  • the corresponding windings 1120 of the phase e.g.
  • windings corresponding to i a ii and i a i2) pass through a DCT 1 124, thereby providing output from the DCT (e.g. O a i) that is associated with whether a fault is present.
  • the arrangement shown illustrates a DCT for phase-a of group 1; however, five more DCT with a similar arrangement corresponding to the other phases and groups would be used to replicate the full control scenario shown in Figures 8-9.
  • the disconnection switching may be provided by intelligent fuses.
  • the intelligent fuses may be configured such that when there is an extra circulating current, it gives rise to adequate i r loss to open the respective phases or open the fuse. Fuses may be a cost effective way to provide the disconnection switching.
  • Figures 12 and 13 respectively illustrate operation of motor 24 with an inter-phase fault between phase-a and phase-b.
  • an inter-phase fault 1212 is present between the same phase group
  • Figure 13 shows an inter-phase fault 1312 between the two different phase groups.
  • the group 1 windings 1210-1 or 1310-1 of the stator are disconnected 1230-1 or 1330-1 (illustrated by gaps in the windings, as disconnection switches are omitted for the sake of clarity), which allows the motor to keep running symmetrical current with the group 2 windings 1210-2 or 1310-2 of the motor.
  • control logic may be altered to disconnect group 2 windings 1210-2 or 1310-2 and run on group 1 windings 1210-1 or 1310-1 if desired. Note that the currents in the group 2 stator windings 1210-2 or 1310-2 remaining connected are increases by about double to cater the load torque without significant change in cable current.
  • disconnection 1230-1 or 1330- 1 of switches at both the start and end of the windings of a motor 24 may disconnect the switches in a variety of different combinations.
  • at least one disconnection, at either the start or end of the winding may be provided in each phase of the group windings to be disconnected.
  • the switches at the start of the group 1 windings may be switched to an open state; the switches at the end of the group 1 windings may be switched to an open state; or a combination of the switches at the start or of the group 1 windings may be switched to an open state.
  • Figure 14 illustrates an inter-phase fault 1412 in phase-a and phase-b of group 1 and phase-b of group 2 in a motor 24, and Figure 15 illustrates the disconnection 1430-1 of group 1 windings to ensure no inter-phase fault in motor 24. If there are multiple faults present in the system, a controller may estimate which phase group has the greater number of total faults and disconnect that specific phase group accordingly.
  • Figure 14 shows ground faults 1412-1 and 1412-2 in two of the windings (between i all and i a n and i b ii and i b n) in the first phase group Ni and another fault 1412-3 at one winding (between i b2 i and ⁇ 22) in second phase group N 2 or direct inter-phase fault.
  • the windings of phase group Ni may be disconnected 1430-1 (disconnection switches are omitted for the sake of clarity) to address the faults and to allow the motor to continue proper operation.
  • FIG. 16 is a schematic illustration of a control logic 1600 to operate disconnection switches when multiple faults in the phase groups.
  • the control logic can be used regardless of whether the faults are ground or direct inter-phase faults.
  • the number of faults detected by current difference detectors 1618 from a first phase group may be tallied as a first total ni
  • the number of faults detected by current difference detectors 1618 from a second phase group may be tallied as a second total ri 2 .
  • the totals ni and ri 2 may be compared 1632, and the phase group with the greatest number of faults present may be switched off. When number of faults in both phase groups is equal, either one of the phase groups may be switched off.
  • some embodiments may utilize DCTs to provide current difference monitoring.
  • Figure 17 illustrates a gauge connection arrangement 1700.
  • the methodology provides a high impedance connection 1710 (using high resistance, high inductance, or a combination thereof) between the two neutrals Ni and N 2 and gauge 1720 is connected by tapping middle of the high impedance.
  • both the neutrals Ni and N 2 have the same potential and gauge 1720 operation is normal.
  • gauge 1720 receives controlled operating voltage by means of the impedance.
  • one of the neutral is inactive due to disconnection of one of the phase groups and gauge operation remains uninterrupted due to the configuration.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

Un moteur polyphasé permettant de gérer des défaillances peut fournir deux groupes de phase d'enroulements, chacun des groupes de phase fournissant des enroulements aux multiples phases du moteur. Le moteur peut comprendre plusieurs commutateurs de déconnexion pour les deux groupes de phase d'enroulements. Les commutateurs de déconnexion peuvent être associés à un groupe de phase particulier et à une phase spécifique du moteur. Lorsqu'une défaillance est détectée dans le moteur, les commutateurs de déconnexion correspondant à l'un des groupes de phase d'enroulements sont commutés sur un état ouvert pour déconnecter les enroulements du groupe de phase et permettre au moteur de fonctionner avec les enroulements de l'autre groupe de phase en dépit de la défaillance détectée.
PCT/US2015/029169 2015-05-05 2015-05-05 Gestion des défaillances dans des moteurs polyphasés WO2016178667A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2015/029169 WO2016178667A1 (fr) 2015-05-05 2015-05-05 Gestion des défaillances dans des moteurs polyphasés

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2015/029169 WO2016178667A1 (fr) 2015-05-05 2015-05-05 Gestion des défaillances dans des moteurs polyphasés

Publications (1)

Publication Number Publication Date
WO2016178667A1 true WO2016178667A1 (fr) 2016-11-10

Family

ID=57218607

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2015/029169 WO2016178667A1 (fr) 2015-05-05 2015-05-05 Gestion des défaillances dans des moteurs polyphasés

Country Status (1)

Country Link
WO (1) WO2016178667A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3389177A1 (fr) * 2017-04-11 2018-10-17 Hamilton Sundstrand Corporation Moteurs électriques à détection de tension neutre
US10385857B2 (en) 2014-12-09 2019-08-20 Schlumberger Technology Corporation Electric submersible pump event detection
EP3648336A1 (fr) * 2018-10-31 2020-05-06 Hamilton Sundstrand Corporation Protection de courant différentiel d'enroulement parallèle de moteur
CN114940070A (zh) * 2022-05-27 2022-08-26 中国第一汽车股份有限公司 分断控制方法、装置、存储介质及电子装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1589650A2 (fr) * 2002-06-07 2005-10-26 TRW Limited Commande de moteur
JP2010537621A (ja) * 2007-08-29 2010-12-02 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 電気機器
US20110025369A1 (en) * 2009-07-29 2011-02-03 Gm Global Technology Operations, Inc. Method and system for testing electric automotive drive systems
US20140008060A1 (en) * 2012-07-09 2014-01-09 Baker Hughes Incorporated Flexibility of downhole fluid analyzer pump module
US20140132197A1 (en) * 2012-11-09 2014-05-15 Hitachi Automotive Systems, Ltd. Electric Actuator For Automobile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1589650A2 (fr) * 2002-06-07 2005-10-26 TRW Limited Commande de moteur
JP2010537621A (ja) * 2007-08-29 2010-12-02 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 電気機器
US20110025369A1 (en) * 2009-07-29 2011-02-03 Gm Global Technology Operations, Inc. Method and system for testing electric automotive drive systems
US20140008060A1 (en) * 2012-07-09 2014-01-09 Baker Hughes Incorporated Flexibility of downhole fluid analyzer pump module
US20140132197A1 (en) * 2012-11-09 2014-05-15 Hitachi Automotive Systems, Ltd. Electric Actuator For Automobile

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10385857B2 (en) 2014-12-09 2019-08-20 Schlumberger Technology Corporation Electric submersible pump event detection
US10738785B2 (en) 2014-12-09 2020-08-11 Sensia Llc Electric submersible pump event detection
EP3389177A1 (fr) * 2017-04-11 2018-10-17 Hamilton Sundstrand Corporation Moteurs électriques à détection de tension neutre
US11342875B2 (en) * 2017-04-11 2022-05-24 Hamilton Sundstrand Corporation Electric motors with neutral voltage sensing
EP3648336A1 (fr) * 2018-10-31 2020-05-06 Hamilton Sundstrand Corporation Protection de courant différentiel d'enroulement parallèle de moteur
US10778135B2 (en) 2018-10-31 2020-09-15 Hamilton Sunstrand Corporation Motor parallel winding differential current protection
CN114940070A (zh) * 2022-05-27 2022-08-26 中国第一汽车股份有限公司 分断控制方法、装置、存储介质及电子装置

Similar Documents

Publication Publication Date Title
US11353029B2 (en) ESP pump flow rate estimation and control
Brinner et al. Induction versus permanent-magnet motors for electric submersible pump field and laboratory comparisons
GB2508722B (en) Artificial lift equipment power line communication
US9985690B2 (en) Telemetry equipment for multiphase electric motor systems
WO2016178667A1 (fr) Gestion des défaillances dans des moteurs polyphasés
WO2015179775A1 (fr) Évaluation de système électrique submersible
US20130278183A1 (en) Load filters for medium voltage variable speed drives in electrical submersible pump systems
Liang et al. Downhole tool design for conditional monitoring of electrical submersible motors in oil field facilities
Liang et al. Electrical submersible pump system grounding: Current practice and future trend
WO2016148715A1 (fr) Systèmes à moteur électrique multiphase submersible
Ghoreishi et al. Phase-to-phase communication scheme for downhole monitoring tool design in electrical submersible pump systems
US20210408876A1 (en) System and method for a mitigating high frequency common mode (l-g) phenomena and associated affects on electrical submersible pumps mechanical run life
Bonet-Jara et al. Comprehensive analysis of principal slot harmonics as reliable indicators for early detection of inter-turn faults in induction motors of deep-well submersible pumps
Xiao et al. Induction versus permanent magnet motors for ESP applications
Xiao et al. Induction vs. permanent-magnet motors for ESP applications
US10224836B2 (en) Multiple supply voltage motor assembly
Fischer et al. How to determine the effectiveness of generator differential protection
US20230110823A1 (en) System and method for an early warning system for mitigating high frequency common mode (l-g) phenomena and associated affects on electrical submersible pumps mechanical run life
Liang et al. Downhole monitoring tool design using power line disturbances
Liang et al. Dynamic response of variable frequency drives in electrical submersible pump systems
Zeiada et al. Multiple three-phase induction motors connected to a zigzag transformer
EA020013B1 (ru) Двигательная установка
Kirby et al. Speed control of electric submersible pumps-the" current" approach
Metwally et al. Comparative investigation of lightning impulse tests on electrical submersible pump motors
Escobar et al. Defining a New Era for Induction Motors

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15891356

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15891356

Country of ref document: EP

Kind code of ref document: A1