CN102005883A - Self-control permanent magnet synchronous motor of well submersible pump - Google Patents

Self-control permanent magnet synchronous motor of well submersible pump Download PDF

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Publication number
CN102005883A
CN102005883A CN2010105558054A CN201010555805A CN102005883A CN 102005883 A CN102005883 A CN 102005883A CN 2010105558054 A CN2010105558054 A CN 2010105558054A CN 201010555805 A CN201010555805 A CN 201010555805A CN 102005883 A CN102005883 A CN 102005883A
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CN
China
Prior art keywords
permanent magnet
rotor
rotor core
type
synchronous motor
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN2010105558054A
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Chinese (zh)
Inventor
陈国荣
唐卫全
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangmen Ruirong Pump Industry Co Ltd
Original Assignee
Jiangmen Ruirong Pump Industry Co Ltd
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 Jiangmen Ruirong Pump Industry Co Ltd filed Critical Jiangmen Ruirong Pump Industry Co Ltd
Priority to CN2010105558054A priority Critical patent/CN102005883A/en
Publication of CN102005883A publication Critical patent/CN102005883A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a self-control permanent magnet synchronous motor of a well submersible pump. The motor comprises a rotor, a stator, a front bearing block, a rear bearing block, a stand shell, a rubber pressure adjusting valve, a sand protection cover and a driving controller, wherein the stator is straight chute-shaped; the rotor has a sectional permanent magnet skew pole structure, and comprises a rotor shaft, at least two sections of serially connected rotor cores and permanent magnets on at least two poles; the permanent magnets are radially embedded into each section of rotor core; the same magnetic poles of the permanent magnets of two adjacent sections are staggered in the same direction; and a skew pole helical angle formed in the axial direction ranges from 1 to 10 degrees. In the motor, the problem of motor rotor skew chute is solved, and the motor has the advantages of greatly reducing the oxidation of the rotor permanent magnet, along with a slender shaft shape suitable for well submersible pump motor, a simple structure and low cost.

Description

Well immersible pump autocontrol permanent magnet synchronous motor
Technical field
Well of the present invention relates to a kind of well immersible pump motor with immersible pump autocontrol permanent magnet synchronous motor, especially a kind of well immersible pump autocontrol permanent magnet synchronous motor.
Background technology
Well is divided into filling type, Water, dry type and protected type with submersible electric motor both at home and abroad at present, all adopts asynchronous motor; Submersible pump has that volume is little, in light weight, prestart does not need diversion, do not inhaled degree system, do not need to establish in addition pump house, easy to install, dependable performance, advantage such as with low cost.Yet energy value is low, is the most fatal shortcoming of immersible pump of Asynchronous Motor Driving, is example with 0.55kw to 30kw, and the average efficiency of asynchronous motor is 70.8%, and the immersible pump average efficiency of composition only is 42%; In the photovoltaic water-raising system, transform light energy is that the efficient of electric energy is about 14%~18%, and the electric energy of the preciousness of being obtained by new forms of energy like this should convert mechanical energy to the high efficiency motor of trying one's best, to enlarge the application of solar cell, advance its industrialization; The rare-earth permanent magnet motor of the driving immersible pump of development Ultra-High Efficiency has been the task of top priority; The autocontrol permanent magnet synchronous motor is compared with brushless DC motor, on the stator and rotor structure, there are not much differences, their main distinction is that the autocontrol permanent magnet synchronous motor adopts the inverter of 180 ° of conductings, the motor supply power voltage is that three phase sine pulse-width modulation waveform, stator threephase armature winding are by the while conducting, and flow through three symmetrical continuous currents, thereby in air gap, form the rotating magnetic field of continuous circle near sine; Like this, electronic function realizes output torque capacity and operational efficiency maximization, and the minimizing of torque fluctuation, and very helps the optimization of control system running environment, the lifting of reliability.But the autocontrol permanent magnet synchronous motor will inevitably run into the skewed slot problem, for reducing the torque fluctuation and the high order harmonic component of permanent magnet synchronous motor, simultaneously in order to reduce the stray loss of permanent magnet synchronous motor, in stator core, should take skewed slot, but use the autocontrol permanent magnet synchronous motor with in the immersible pump at well, because of being subjected to the restriction of mineshaft diameter size, fixed, the rotor core diameter is very little, length is longer, formed " slender axles " shape, if adopt skewed slot technology in stator, just very difficult with the coil inserting apparatus rule, the structure that for this reason changes stator and rotor is the problem of studying at present.
Summary of the invention
The technical problem to be solved in the present invention provides and a kind ofly can solve the skewed slot problem, be applicable to that well is with " slender axles " shape in the motor for submerged pump, simple in structure, and can significantly reduce the rotor permanent magnet oxidation, and lower-cost well is with immersible pump autocontrol permanent magnet synchronous motor.
For solving the problems of the technologies described above, well of the present invention with the technical scheme of immersible pump autocontrol permanent magnet synchronous motor is: it comprises rotor and stator and front-end bearing pedestal and rear bearing block, also comprise frame shell and rubber pressure regulating valve and anti-sand cover and driving governor, described stator is the straight trough type, described rotor is the oblique electrode structure rotor of a kind of segmentation permanent magnet, comprise armature spindle and be in series with two sections rotor core at least, and the permanent magnet that radially is inlaid in the two poles of the earth at least on every section rotor core, stagger in the same way between the adjacent two sections permanent magnet same pole, axially the oblique utmost point helical angle that forms is between 1 ° to 10 °.
As one of the preferred technical solution of the present invention be: the rotor shaft hatch of described rotor core has the hole keyway, the position that corresponding armature spindle is installed every section rotor core is provided with wherein key of shaft key groove and setting-in, angle according to oblique utmost point helical angle between every section shaft key groove is in staggered distribution, and every section rotor core relies on the key connected mode to be positioned on the armature spindle.
As two of the preferred technical solution of the present invention be: described rotor core is a kind of interior permanent magnets iron core, around rotor shaft hatch, separate and be evenly equipped with at least two permanent magnet embedding holes on the rotor core, and adjacent edge also is provided with magnet isolation tank between each permanent magnet embedding hole, interval region between the adjacent permanent magnet embedding hole forms every magnetic bridge, and described permanent magnet is separated by by polarity heteropole radially and is flush-mounted in the permanent magnet embedding hole.
As three of the preferred technical solution of the present invention be: described rotor core is a kind of spoke type permanent magnet iron core, separate radial radiation-type and be evenly equipped with at least two permanent magnet caulking grooves around rotor shaft hatch on the rotor core, described permanent magnet is separated by by polarity heteropole radially and is flush-mounted in the permanent magnet caulking groove.
As four of the preferred technical solution of the present invention be: described driving governor comprises the uncontrollable rectifier of three-phase bridge, the voltage-type three-phase bridge type inverse electrical equipment of 180 ° of conductings, the Current Vector Control device, wherein the input of the uncontrollable rectifier of three-phase bridge connects three-phase alternating-current supply, its output is connected to the input of voltage-type three-phase bridge type inverse electrical equipment, the output of voltage-type three-phase bridge type inverse electrical equipment is connected on the coil of stator, and the Current Vector Control device is connected in parallel between voltage-type three-phase bridge type inverse electrical equipment and the stator coil, and the comparison signal of excitation current component and torque current component is input in the voltage-type three-phase bridge type inverse electrical equipment.
The invention has the beneficial effects as follows: the present invention changes skewed slot stator in traditional autocontrol permanent magnet synchronous motor into the straight trough stator, and the straight trough rotor changes the skewed slot permanent magnet rotor into, and permanent magnet is inlaid on the rotor core, not only be applicable to well " slender axles " shape in the motor for submerged pump, and reduced the oxidation of permanent magnet, specifically be that rotor is the oblique electrode structure rotor of a kind of segmentation permanent magnet, comprise armature spindle and be in series with two sections rotor core at least, and the permanent magnet that radially is inlaid in the two poles of the earth at least on every section rotor core, stagger in the same way between the adjacent two sections permanent magnet same pole, axially the oblique utmost point helical angle that forms is between 1 ° to 10 °, form the skewed slot permanent magnet rotor, solved in the skewed slot problem of well with motor for submerged pump application autocontrol permanent magnet synchronous motor, and simple in structure, and cost is lower.
Description of drawings
Fig. 1 is the front view of well of the present invention with immersible pump autocontrol permanent magnet synchronous motor.
Fig. 2 is the one section the two poles of the earth rotor core front view of well of the present invention with a kind of interior permanent magnets iron core in the immersible pump autocontrol permanent magnet synchronous motor.
Fig. 3 is the another kind of form rotor core front view of well of the present invention with one section the two poles of the earth of a kind of interior permanent magnets iron core in the immersible pump autocontrol permanent magnet synchronous motor.
Fig. 4 is one section four utmost point rotor core front view of well of the present invention with a kind of interior permanent magnets iron core in the immersible pump autocontrol permanent magnet synchronous motor.
Fig. 5 is the chip front view of Fig. 4 rotor core.
Fig. 6 is the rotor front view of well of the present invention with a kind of interior permanent magnets iron core in the immersible pump autocontrol permanent magnet synchronous motor.
Fig. 7 is the rotor multistage iron core series connection magnetic pole distribution mode schematic diagram of Fig. 6 form.
Fig. 8 is the axial schematic diagram after the multistage iron core of the rotor of Fig. 6 form is connected.
Fig. 9 is a kind of version schematic diagram of armature spindle that makes the oblique utmost point helical angle of multistage core magnetic pole rotation formation of series connection.
Figure 10 is that the F-F of Fig. 9 is to cross-sectional view.
Figure 11 is the one section rotor core front view of well of the present invention with a kind of spoke type permanent magnet iron core in the immersible pump autocontrol permanent magnet synchronous motor.
Figure 12 is well of the present invention driving governor control circuit schematic diagram in the immersible pump autocontrol permanent magnet synchronous motor.
Embodiment
Below in conjunction with accompanying drawing well of the present invention is described in more detail with immersible pump autocontrol permanent magnet synchronous motor.
Shown in Fig. 1~12, well of the present invention with the technical scheme of immersible pump autocontrol permanent magnet synchronous motor is: it comprises rotor 1 and stator 2 and front-end bearing pedestal 3 and rear bearing block 4, also comprise frame shell 5 and rubber pressure regulating valve 6 and anti-sand cover 7 and driving governor 8, described stator 2 is the straight trough type, described rotor 1 is the oblique electrode structure rotor of a kind of segmentation permanent magnet, comprise armature spindle 9 and be in series with two sections rotor core 10 at least, and the permanent magnet 11 that radially is inlaid in the two poles of the earth at least on every section rotor core 10, stagger in the same way between adjacent two sections permanent magnet 11 same pole, axially the oblique utmost point pitch angle alpha will 12 that forms is between 1 ° to 10 °.In the present embodiment, permanent magnet 11 is used Nd-Fe-B permanent magnet, with 6, and " pump is an example with the 11kw permanent magnet synchronous motor; the hop count of rotor 1 is six sections; on every section rotor core 10 four utmost points are arranged, and S on the same iron core, N magnetic pole distribute and be separated by, and the oblique utmost point pitch angle alpha will 12 between every section magnetic pole is 7.5 °.
Shown in Fig. 2~11, as one of preferred implementation of the present invention be: the rotor shaft hatch of described rotor core 10 has hole keyway 16, the position that corresponding armature spindle 9 is installed every section rotor core 10 is provided with wherein key 18 of shaft key groove 17 and setting-in, angle according to oblique utmost point pitch angle alpha will 12 between every section shaft key groove 17 is in staggered distribution, and every section rotor core 10 relies on the key connected modes to be positioned on the armature spindle 9.In the present embodiment, permanent magnet 11 is used Nd-Fe-B permanent magnet, with 6, and " pump is an example with the 11kw permanent magnet synchronous motor, and the hop count of rotor 1 is six sections, on every section rotor core 10 four utmost points is arranged, and the oblique utmost point pitch angle alpha will 12 between every section magnetic pole is 7.5 °.
Shown in Fig. 2~8, as two of preferred implementation of the present invention be: described rotor core 10 is a kind of interior permanent magnets iron cores, around rotor shaft hatch, separate and be evenly equipped with at least two permanent magnet embedding holes 13 on the rotor core, and adjacent edge also is provided with magnet isolation tank 14 between each permanent magnet embedding hole 13, interval region between the adjacent permanent magnet embedding hole 13 forms every magnetic bridge 15, and described permanent magnet 11 is separated by by polarity heteropole radially and is flush-mounted in the permanent magnet embedding hole 13.In the present embodiment, permanent magnet 11 is used Nd-Fe-B permanent magnet, and the hop count of rotor 1 is six sections, on every section rotor core 10 four utmost points is arranged, and the oblique utmost point pitch angle alpha will 12 between every section magnetic pole is 7.5 °.
By shown in Figure 11, as three of preferred implementation of the present invention be: described rotor core 10 is a kind of spoke type permanent magnet iron cores, separate radial radiation-type and be evenly equipped with at least two permanent magnet caulking grooves 19 around rotor shaft hatch on the rotor core, described permanent magnet 11 is separated by by polarity heteropole radially and is flush-mounted in the permanent magnet caulking groove 19.
By shown in Figure 12, as four of preferred implementation of the present invention be: described driving governor 8 comprises the uncontrollable rectifier 20 of three-phase bridge, the voltage-type three-phase bridge type inverse electrical equipment 21 of 180 ° of conductings, Current Vector Control device 22, wherein the input of the uncontrollable rectifier 20 of three-phase bridge connects three-phase alternating-current supply, its output is connected to the input of voltage-type three-phase bridge type inverse electrical equipment 21, the output of voltage-type three-phase bridge type inverse electrical equipment 21 is connected on the coil of stator 2, and Current Vector Control device 22 is connected in parallel between voltage-type three-phase bridge type inverse electrical equipment 21 and stator 2 coils, and the comparison signal of excitation current component and torque current component is input in the voltage-type three-phase bridge type inverse electrical equipment 21.
The present invention changes skewed slot stator in traditional autocontrol permanent magnet synchronous motor into the straight trough stator, and the straight trough rotor changes the skewed slot permanent magnet rotor into, and permanent magnet is inlaid on the rotor core, not only be applicable to well " slender axles " shape in the motor for submerged pump, and reduced the oxidation of permanent magnet, specifically be that rotor is the oblique electrode structure rotor of a kind of segmentation permanent magnet, comprise armature spindle and be in series with two sections rotor core at least, and the permanent magnet that radially is inlaid in the two poles of the earth at least on every section rotor core, stagger in the same way between the adjacent two sections permanent magnet same pole, axially the oblique utmost point helical angle that forms is between 1 ° to 10 °, form the skewed slot permanent magnet rotor, solved in the skewed slot problem of well with motor for submerged pump application autocontrol permanent magnet synchronous motor, and simple in structure, and cost is lower.
The above is the preferred embodiment of the present invention, and it does not constitute limiting the scope of the invention, so long as realize purpose of the present invention with essentially identical means, all should belong to protection scope of the present invention.

Claims (5)

1. a well is with immersible pump autocontrol permanent magnet synchronous motor, comprise rotor (1) and stator (2) and front-end bearing pedestal (3) and rear bearing block (4), also comprise frame shell (5) and rubber pressure regulating valve (6) and anti-sand cover (7) and driving governor (8), it is characterized in that: described stator (2) is the straight trough type, described rotor (1) is the oblique electrode structure rotor of a kind of segmentation permanent magnet, comprise armature spindle (9) and be in series with two sections rotor core (10) at least, and the permanent magnet (11) that radially is inlaid in the two poles of the earth at least on every section rotor core (10), stagger in the same way between adjacent two sections permanent magnet (11) same pole, axially the oblique utmost point helical angle (12) that forms is between 1 ° to 10 °.
2. well according to claim 1 immersible pump autocontrol permanent magnet synchronous motor, it is characterized in that: the rotor shaft hatch of described rotor core (10) has hole keyway (16), the position that corresponding armature spindle (9) is installed every section rotor core (10) is provided with wherein key (18) of shaft key groove (17) and setting-in, angle according to oblique utmost point helical angle (12) between every section shaft key groove (17) is in staggered distribution, and every section rotor core (10) relies on the key connected mode to be positioned on the armature spindle (9).
3. well according to claim 1 immersible pump autocontrol permanent magnet synchronous motor, it is characterized in that: described rotor core (10) is a kind of interior permanent magnets iron core, around rotor shaft hatch, separate and be evenly equipped with at least two permanent magnet embedding holes (13) on the rotor core, and adjacent edge also is provided with magnet isolation tank (14) between each permanent magnet embedding hole (13), interval region between the adjacent permanent magnet embedding hole (13) forms every magnetic bridge (15), and described permanent magnet (11) is separated by by polarity heteropole radially and is flush-mounted in the permanent magnet embedding hole (13).
4. well according to claim 1 immersible pump autocontrol permanent magnet synchronous motor, it is characterized in that: described rotor core (10) is a kind of spoke type permanent magnet iron core, separate radial radiation-type and be evenly equipped with at least two permanent magnet caulking grooves (19) around rotor shaft hatch on the rotor core, described permanent magnet (11) is separated by by polarity heteropole radially and is flush-mounted in the permanent magnet caulking groove (19).
5. well according to claim 1 immersible pump autocontrol permanent magnet synchronous motor, it is characterized in that: described driving governor (8) comprises the uncontrollable rectifier of three-phase bridge (20), the voltage-type three-phase bridge type inverse electrical equipment (21) of 180 ° of conductings, Current Vector Control device (22), wherein the input of the uncontrollable rectifier of three-phase bridge (20) connects three-phase alternating-current supply, its output is connected to the input of voltage-type three-phase bridge type inverse electrical equipment (21), the output of voltage-type three-phase bridge type inverse electrical equipment (21) is connected on the coil of stator (2), and Current Vector Control device (22) is connected in parallel between voltage-type three-phase bridge type inverse electrical equipment (21) and stator (2) coil, and the comparison signal of excitation current component and torque current component is input in the voltage-type three-phase bridge type inverse electrical equipment (21).
CN2010105558054A 2010-11-15 2010-11-15 Self-control permanent magnet synchronous motor of well submersible pump Pending CN102005883A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102868246A (en) * 2012-09-19 2013-01-09 武汉新能源接入装备与技术研究院有限公司 High-capacity low-speed permanent-magnet wind-driven generator
US9093878B2 (en) 2012-11-01 2015-07-28 General Electric Company Sensorless electric machine
CN105305678A (en) * 2015-02-15 2016-02-03 东风汽车电气有限公司 Permanent magnet synchronous motor subsection skewed pole positioning rotor
CN105680593A (en) * 2016-04-13 2016-06-15 上海信耀电子有限公司 Rotor structure of servo motor
WO2016161693A1 (en) * 2015-04-09 2016-10-13 深圳市今盛科技有限公司 Rotor and motor having rotor
CN106329777A (en) * 2016-10-24 2017-01-11 珠海格力节能环保制冷技术研究中心有限公司 Oblique pole motor rotor, manufacturing method and motor
US9641033B2 (en) 2013-09-06 2017-05-02 General Electric Company Electric machine having offset rotor sections
WO2017087508A1 (en) * 2015-11-16 2017-05-26 Ge Oil & Esp, Inc. Electric submersible pumping system with permanent magnet motor
CN107086688A (en) * 2017-06-23 2017-08-22 江苏航天动力机电有限公司 Compact asynchronous starting permagnetic synchronous motor segmented rotor structure
US9871418B2 (en) 2012-11-01 2018-01-16 General Electric Company Sensorless electric machine
US9941775B2 (en) 2012-11-01 2018-04-10 General Electric Company D-ring implementation in skewed rotor assembly
RU196593U1 (en) * 2019-04-17 2020-03-06 Общество с ограниченной ответственностью "Управляющая компания "Система-Сервис" Submersible high speed valve motor
CN114421671A (en) * 2022-03-28 2022-04-29 胜利油田胜利泵业有限责任公司 Submersible permanent magnet motor

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CN201499038U (en) * 2009-09-18 2010-06-02 钱存善 Multi-section oblique-pole rotor type permanent magnetic wind driven generator
EP2197091A2 (en) * 2008-12-15 2010-06-16 Lg Electronics Inc. Interior permanent magnet type brushless direct current motor
CN201869072U (en) * 2010-11-15 2011-06-15 江门市瑞荣泵业有限公司 Self-controlled permanent magnet synchronous motor of submersible pump for well

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CN2452198Y (en) * 2000-11-16 2001-10-03 沈阳工业大学 Permasyn motor with high lock-in synchronism ability
CN1503429A (en) * 2002-11-26 2004-06-09 吴永忠 Novel rotor technology for permanent magnetic wind power generator
CN2607693Y (en) * 2002-12-28 2004-03-24 陈瑞珍 Submersible motor base structure device
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EP2197091A2 (en) * 2008-12-15 2010-06-16 Lg Electronics Inc. Interior permanent magnet type brushless direct current motor
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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102868246A (en) * 2012-09-19 2013-01-09 武汉新能源接入装备与技术研究院有限公司 High-capacity low-speed permanent-magnet wind-driven generator
US9093878B2 (en) 2012-11-01 2015-07-28 General Electric Company Sensorless electric machine
US9941775B2 (en) 2012-11-01 2018-04-10 General Electric Company D-ring implementation in skewed rotor assembly
US9871418B2 (en) 2012-11-01 2018-01-16 General Electric Company Sensorless electric machine
US9641033B2 (en) 2013-09-06 2017-05-02 General Electric Company Electric machine having offset rotor sections
CN105305678A (en) * 2015-02-15 2016-02-03 东风汽车电气有限公司 Permanent magnet synchronous motor subsection skewed pole positioning rotor
WO2016161693A1 (en) * 2015-04-09 2016-10-13 深圳市今盛科技有限公司 Rotor and motor having rotor
US10644577B2 (en) 2015-04-09 2020-05-05 Shenzhen Gam Shine Technology Co., Limited Rotor and motor having rotor
AU2016356670B2 (en) * 2015-11-16 2020-09-10 Ge Oil & Esp, Inc. Electric submersible pumping system with permanent magnet motor
WO2017087508A1 (en) * 2015-11-16 2017-05-26 Ge Oil & Esp, Inc. Electric submersible pumping system with permanent magnet motor
US9995119B2 (en) 2015-11-16 2018-06-12 Ge Oil & Gas Esp, Inc. Electric submersible pumping system with permanent magnet motor
EP3378155B1 (en) 2015-11-16 2021-04-07 Ge Oil & Gas Esp, Inc. Electric submersible pumping system with permanent magnet motor
CN105680593A (en) * 2016-04-13 2016-06-15 上海信耀电子有限公司 Rotor structure of servo motor
CN106329777A (en) * 2016-10-24 2017-01-11 珠海格力节能环保制冷技术研究中心有限公司 Oblique pole motor rotor, manufacturing method and motor
CN107086688A (en) * 2017-06-23 2017-08-22 江苏航天动力机电有限公司 Compact asynchronous starting permagnetic synchronous motor segmented rotor structure
RU196593U1 (en) * 2019-04-17 2020-03-06 Общество с ограниченной ответственностью "Управляющая компания "Система-Сервис" Submersible high speed valve motor
CN114421671A (en) * 2022-03-28 2022-04-29 胜利油田胜利泵业有限责任公司 Submersible permanent magnet motor

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Application publication date: 20110406