CN102570926A - Five-degree-of-freedom suspended electric power generation system - Google Patents
Five-degree-of-freedom suspended electric power generation system Download PDFInfo
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- CN102570926A CN102570926A CN2012100406374A CN201210040637A CN102570926A CN 102570926 A CN102570926 A CN 102570926A CN 2012100406374 A CN2012100406374 A CN 2012100406374A CN 201210040637 A CN201210040637 A CN 201210040637A CN 102570926 A CN102570926 A CN 102570926A
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Abstract
The invention relates to a five-degree-of-freedom suspended electric power generation system, which comprises an enclosure, a rotating shaft, a three-degree-of-freedom bearing-free alternating pole permanent magnet motor, of which the left end is actively suspended in an axial direction, a three-degree-of-freedom bearing-free alternating pole permanent magnet motor, of which the right end is actively suspended in an axial direction, and two auxiliary bearings, wherein due to the two three-degree-of-freedom bearing-free motors, the five-degree-of-freedom suspension of the system is realized; and a redundancy function is realized in the axial direction. The three-degree-of-freedom bearing-free alternating pole permanent magnet motor, of which the left end is actively suspended in the axial direction, is used as a power generator and outputs electric energy; and the three-degree-of-freedom bearing-free alternating pole permanent magnet motor, of which the right end is actively suspended in the axial direction is used as a motor and outputs a torque. The five-degree-of-freedom suspended electric power generation system is integrated with an electric function, a power generation function and a suspension function, and can be widely applied to a plurality of special power transmission fields, such as aerospace, life sciences, chemical engineering, semiconductor industries and the like.
Description
Technical field
The present invention relates to the electric-generating system that a kind of five degree of freedom suspends, be that a kind of current collection is moving, generating and suspension function be in the high-speed electric expreess locomotive system of one, belongs to the technical field of Electric Drive control appliance.
Background technology
Along with the develop rapidly of modern industry, high-speed electric expreess locomotive and ultrahigh speed motor have obtained application more and more widely, such as high-speed, high precision lathe, turbomolecular pump, supercentrifuge, compressor, flywheel energy storage and aerospace field etc.The high speed, the ultrahigh speed that realize motor reliably turn round, and must solve the support problem of high speed lower rotor part.Traditional mechanical bearing suffered frictional resistance when rotor high-speed rotates increases, and the wearing and tearing aggravation causes that the motor feels hot, has not only reduced the operating efficiency of motor, has shortened the useful life of motor and bearing, has also increased the burden to motor and bearing maintenance.
The bearing-free motor technology is integrated in one motor torque output and rotor electromagnetic suspension support function; Solved the wear problem of conventional mechanical bearings in high speed, ultrahigh speed occasion; Not only have contactless, unlubricated, do not have wearing and tearing, do not have mechanical noise, good characteristics such as high-speed, high accuracy, long-life; And have advantages such as volume is little, the axial space utilance high, power consumption is little, be an important breakthrough of high-speed electric expreess locomotive area research.
Realize the stable suspersion of motor, need five degrees of freedom on its space of control.Traditional suspension of five-freedom degree magnetic system has three kinds of structures usually: 1. adopt two radial direction magnetic bearings, an axial magnetic bearing and a motor to constitute; 2. adopt an axial magnetic bearing and two two-freedom bearing-free motors to constitute; 3. adopt a Three Degree Of Freedom axial-radial hybrid magnetic bearing and a two-freedom bearing-free motor to constitute.Wherein, first kind of structure radial direction magnetic bearing and axial magnetic bearing have all occupied certain axial space, make the effective axial length that produces torque on the rotor reduce, and rigidity reduces, and control system is also quite complicated in addition; Second kind of structure has multiple redundancy and fault tolerance, but axial length is still longer; The third structure is combined as a whole axial-radial magnetic bearing, has effectively shortened axial length, but the axial-radial hybrid magnetic bearing only has support function, and system does not possess redundancy and fault tolerance.Therefore it is compact more to seek a kind of structure, the more comprehensive novel bearing-free motor of function system.
At the special occasions of numerous utilization bearing-free motors such as Aero-Space, life science, chemical industry, semiconductor, particularly the vacuum occasion or the ultra clean field of sealing may have difficulties to control circuit in the sealing system or transducer power supply.If adopt powered battery, the replacing of battery maybe be cumbersome; If adopt the external power source input, will strengthen the requirement of sealing.In addition, measure rotating speed of motor, brought difficulty therefore for the monitoring of system operation situation at mechanical sensors such as some special occasions possibility inconvenience installation optical code disks.In order to solve the problems referred to above that no bearing technology runs in application, enlarge the application of no bearing technology, just need seek a kind of novel structure or device.
Summary of the invention
The electric-generating system that the object of the present invention is to provide a kind of five degree of freedom to suspend; This system's current collection is moving, generating and suspension function be in one; The five degree of freedom that not only can realize electric system suspends; Also possess the function of torque output and electric energy output simultaneously, can be applicable to various special high speed situation.
For achieving the above object, the present invention adopts following technical proposals:
The electric-generating system that a kind of five degree of freedom suspends; Comprise a casing and a rotating shaft; Device is characterised in that: have the three-freedom consequent pole permanent magnet motor without bearing of three-freedom consequent pole permanent magnet motor without bearing and a right-hand member axial direction initiative suspending of a left end axial direction initiative suspending to be installed on said interior right ends and be sleeved in the said rotating shaft, have two auxiliary bearings to be installed on both sides and the supporting shaft of machine shaft respectively.
The architectural feature of the three-freedom consequent pole permanent magnet motor without bearing of the three-freedom consequent pole permanent magnet motor without bearing of said left end axial direction initiative suspending and right-hand member axial direction initiative suspending is: embedding is wound with torque output that the four pairs of utmost point torques of cover three-phase control winding is used to control motor and controls winding with a pair of utmost point radial suspension of a cover three-phase and be used to control the suffered radial suspension force of rotor core respectively on the radial stator iron core.Radial stator right ends unshakable in one's determination is separately installed with two axial stator iron cores; Embedding is wound with the axial Suspension Control winding of a cover respectively on two axial stator iron cores; The axial Suspension Control windings in series of two covers is joined, and is used to control the suffered axial suspension power of rotor core.Rotor permanent magnet is installed on the rotor core excircle with radial direction; Rotor permanent magnet radially is same polarity and arranges; Rotor core between the rotor permanent magnet is become another identical polarity by alternating magnetization, and the rotor core that rotor shaft is housed is placed in radial stator position, middle unshakable in one's determination.
In order to prevent system overheat, influence the reliability service of system, it also has a cover cooling system, comprises apopore, blasthole and bosh, and wherein apopore and blasthole lay respectively at the axial both sides of casing, and bosh then is located on the casing.
For native system is control effectively, it also comprises sensor detecting system, and the displacement transducer of employing is eddy current displacement sensor.Specifically comprise left end generator radial displacement transducer, right-hand member motor radial displacement transducer and shaft position sensor.
Operation principle of the present invention is: adopt the three-freedom consequent pole permanent magnet motor without bearing of two cover axial direction initiative suspendings to realize that the five degree of freedom of system suspends; The suspension of wherein axial one degree of freedom can be by a wherein cover motor realization; The axial suspension function of another set of motor then as backup, is promptly axially having a redundancy, even if wherein the axial suspension winding of a cover motor breaks down; Still the axial suspension of system be can realize, thereby the fail safe and the reliability of system improved.The three-freedom consequent pole permanent magnet motor without bearing of right-hand member axial direction initiative suspending is exported required torque as motor.The three-freedom consequent pole permanent magnet motor without bearing of left end axial direction initiative suspending is as generator, and the electric energy that the outside is imported is converted into the adjustable electric energy output of electric current and voltage value, gives other electric equipment power supply, can also be as the rotating speed of tachogenerator detection system.
The present invention has following conspicuous outstanding substantive distinguishing features and remarkable advantage compared with prior art:
1. the function that possesses motor, generator and suspension simultaneously when realizing that the rotating shaft five degree of freedom suspends, promptly can be exported torque, can export required electric energy again, can also test the speed, and has widened the application of bearing-free motor.
2. axial suspension has a redundancy, even if wherein the axial suspension winding of a cover motor breaks down, system still can realize axial suspension, has improved the fail safe and the reliability of system.
3. the axial space utilance is high, and is simple in structure, is particularly suitable for wanting that cube is little, in light weight, high reliability and long-life occasion.
4. be convenient to machining assembling and modularization production, the requirement of reduction mechanical processing technique, the cost cost is low.
Generally speaking; The electric-generating system that the five degree of freedom of the present invention's structure suspends; Current collection is moving, generating and suspension function be in one, has realized that the five degree of freedom of system suspends, and compares with traditional five degree of freedom suspension system; Axially utilance is higher, and can realize the fault-tolerant or redundancy feature of axial suspension function.In addition, in the vacuum occasion or the ultra clean field of sealing, can adopt the electricity generate function in this electric system to come to control circuit in the sealing system or transducer power supply; And the occasion that mechanical sensors such as optical code disk are installed in inconvenience can utilize power generation part to detect rotating speed of motor as tachogenerator.Therefore, the present invention relies on its compact structure and strong functions, in numerous special Electric Drive fields such as Aero-Space, life science, chemical industry, semi-conductor industry, is with a wide range of applications.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
A preferred embodiment of the present invention accompanying drawings is following:
Referring to Fig. 1; The electric-generating system that this five degree of freedom suspends is made up of the three-freedom consequent pole permanent magnet motor without bearing 22 of casing 20, rotating shaft 21, left end axial direction initiative suspending, three-freedom consequent pole permanent magnet motor without bearing 18 and two auxiliary bearings 16,24 of right-hand member axial direction initiative suspending.The three-freedom consequent pole permanent magnet motor without bearing of an axial direction initiative suspending is installed on system's left end, as generator, can the electric energy of outside input be converted into the adjustable electric energy output of electric current and voltage value, gives
Other electric equipment is supplied power, and also can be used as the rotating speed of tachogenerator detection system; The three-freedom consequent pole permanent magnet motor without bearing of another axial direction initiative suspending is installed on system's right-hand member, as motor, and the output torque; Two auxiliary bearings 16,24 are installed on the both sides of rotating shaft 21 respectively.The three-freedom consequent pole permanent magnet motor without bearing 22 of left end axial direction initiative suspending with the characteristic of the three-freedom consequent pole permanent magnet motor without bearing 18 of right-hand member axial direction initiative suspending is: embedding is used to control the suffered radial suspension force of rotor core around torque output and a pair of utmost point radial suspension control of the cover three-phase winding 1,8 that four pairs of utmost point torques control of cover three-phase winding 2,9 is used to control motor respectively on radial stator unshakable in one's determination 4,11.The right ends of radial stator unshakable in one's determination 4,11 is separately installed with two axial stator unshakable in one's determination 7,14; Embedding is wound with the axial Suspension Control winding 3,10 of a cover respectively on two axial stator unshakable in one's determination 7,14; The axial Suspension Control windings in series of two covers is joined, and is used to control the suffered axial suspension power of rotor core 6,12.Rotor permanent magnet 5,13 is installed on rotor core 6,12 excircles with radial direction; Rotor permanent magnet radially is same polarity and arranges; Rotor core between the rotor permanent magnet is become another identical polarity by alternating magnetization, and the rotor core 6,12 that rotor shaft 21 is housed is placed in the position, middle of radial stator unshakable in one's determination 4,11.
Cooling system comprises apopore 17, blasthole 23 and bosh 19, and apopore 17 and blasthole 23 lay respectively at the axial both sides of casing 20, and bosh 19 is located on the casing 20.
Sensor detecting system comprises left end generator radial displacement transducer 25, right-hand member motor radial displacement transducer 15 and shaft position sensor 26.Right-hand member motor radial displacement transducer 15 is positioned at the right side of right-hand member auxiliary bearing 16, and left end generator radial displacement transducer 25 is positioned at the left side of left end auxiliary bearing 24, and shaft position sensor 26 is positioned at rotating shaft 21 axial high order ends.The displacement transducer that adopts is eddy current displacement sensor.
The three-freedom consequent pole permanent magnet motor without bearing 22 of left end axial direction initiative suspending is through the Suspension Control electric current in the control radial suspension control winding 1; Change is by the symmetrical distribution of the rotating magnetic field of torque control winding 2 generations; Thereby on rotor, produce the controlled radial suspension force of size and Orientation, realize that motor two-freedom radially suspends; Axial suspension control winding 3 then changes the magnetic field that rotor permanent magnet 5 produces at axial air gap place, the left and right sides, thereby produces an axial suspending power, realizes the suspension of axial one degree of freedom; The three-freedom consequent pole permanent magnet motor without bearing 18 of right-hand member axial direction initiative suspending is as the same.Therefore, the suspension of left end three degree of freedom adds that the suspension of right-hand member three degree of freedom can realize the suspension of five degree of freedom, and axially also has the redundancy of one degree of freedom.In practical work process; Make the three-freedom consequent pole permanent magnet motor without bearing 22 of left end axial direction initiative suspending be operated in generating state; By torque control winding 2 needed voltage of output or current values; Perhaps be used for the detection system rotating speed, make the three-freedom consequent pole permanent magnet motor without bearing 18 of right-hand member axial direction initiative suspending be operated in motoring condition, by the required torque of rotating shaft 21 outputs.
Claims (4)
1. the electric-generating system that suspends of a five degree of freedom; Comprise a casing (20) and a rotating shaft (21); It is characterized in that: have the three-freedom consequent pole permanent magnet motor without bearing (18) of three-freedom consequent pole permanent magnet motor without bearing (22) and a right-hand member axial direction initiative suspending of a left end axial direction initiative suspending to be installed on the inner right ends of said casing (20) respectively and be sleeved in the said rotating shaft (21), have two auxiliary bearings (16,24) to be installed on both sides and the supporting shaft (21) of rotating shaft (21) respectively.
2. the electric-generating system that five degree of freedom according to claim 1 suspends; It is characterized in that: the three-freedom consequent pole permanent magnet motor without bearing (18) of three-freedom consequent pole permanent magnet motor without bearing of said left end axial direction initiative suspending (22) and right-hand member axial direction initiative suspending comprises that respectively two axial stator iron cores (7,14) are installed on the right ends of radial stator iron core (4,11) respectively; Go up embedding respectively around a cover axial Suspension Control winding (3,10) at two axial stator iron cores (7,14); This two axial Suspension Control winding of cover (3,10) is connected in series, and said radial stator (4,11) unshakable in one's determination is gone up embedding respectively around four pairs of utmost point torque control windings (2,9) of a cover three-phase and a pair of utmost point radial suspension control of cover three-phase winding (1,8); Respectively there is a rotor permanent magnet (5,13) to be installed on a rotor core (6, the 12) excircle with radial direction respectively; Said rotor permanent magnet (5,13) radially is same polarity and arranges; Rotor core (6,12) between this rotor permanent magnet (5,13) is become another identical polarity by alternating magnetization, and the rotor core (6,12) that rotor shaft (21) are housed is placed in the position, middle of radial stator iron core (4,11).
3. the electric-generating system that five degree of freedom according to claim 1 suspends; It is characterized in that: a cooling system is arranged: comprise a water hole (17), a blasthole (23) and a bosh (19); Said apopore (17) and blasthole (23) lay respectively at the axial both sides of casing (20), and said bosh (19) is located on the casing (20).
4. the electric-generating system that five degree of freedom according to claim 1 suspends; It is characterized in that: a sensor detecting system is arranged: comprise a left end generator radial displacement transducer (25), a right-hand member motor radial displacement transducer (15) and a shaft position sensor (26); Said left end generator radial displacement transducer (25) is positioned at the left side of left end auxiliary bearing (24); Right-hand member motor radial displacement transducer (15) is positioned at the right side of right-hand member auxiliary bearing (16); Shaft position sensor (26) is positioned at axially high order end of rotating shaft (21), and the displacement transducer that is adopted (25,15,26) is eddy current displacement sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210040637.4A CN102570926B (en) | 2012-02-22 | 2012-02-22 | Five-degree-of-freedom suspended electric power generation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210040637.4A CN102570926B (en) | 2012-02-22 | 2012-02-22 | Five-degree-of-freedom suspended electric power generation system |
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| CN102570926A true CN102570926A (en) | 2012-07-11 |
| CN102570926B CN102570926B (en) | 2015-05-27 |
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| CN201210040637.4A Expired - Fee Related CN102570926B (en) | 2012-02-22 | 2012-02-22 | Five-degree-of-freedom suspended electric power generation system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104460442A (en) * | 2014-11-18 | 2015-03-25 | 上海大学 | Mobile phone remote control system for standby generating set |
| CN109525145A (en) * | 2018-11-20 | 2019-03-26 | 湖南根轨迹智能科技有限公司 | A kind of Novel suspending electromagnet unit and levitating electromagnet module |
| CN113266583A (en) * | 2021-06-08 | 2021-08-17 | 苏州中科科仪技术发展有限公司 | Magnetic suspension bearing structure and magnetic suspension molecular pump |
| CN117411244A (en) * | 2023-12-14 | 2024-01-16 | 沈阳众创高科节能电机技术有限公司 | Sectional multi-stage cooling water-filled permanent magnet submersible motor |
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| US20050264118A1 (en) * | 2004-03-01 | 2005-12-01 | Kascak Peter E | Conical bearingless motor/generator |
| CN1852004A (en) * | 2006-04-30 | 2006-10-25 | 南京航空航天大学 | High-speed motor system having multiple redundance functions |
| US20060238053A1 (en) * | 2004-03-01 | 2006-10-26 | The University Of Toledo | Conical bearingless motor/generator |
| CN101207310A (en) * | 2007-12-12 | 2008-06-25 | 南京航空航天大学 | Three-freedom consequent pole permanent magnet motor without bearing of axial direction initiative suspending |
| US7456537B1 (en) * | 2004-12-17 | 2008-11-25 | The University Of Toledo | Control system for bearingless motor-generator |
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2012
- 2012-02-22 CN CN201210040637.4A patent/CN102570926B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050264118A1 (en) * | 2004-03-01 | 2005-12-01 | Kascak Peter E | Conical bearingless motor/generator |
| US20060238053A1 (en) * | 2004-03-01 | 2006-10-26 | The University Of Toledo | Conical bearingless motor/generator |
| US7456537B1 (en) * | 2004-12-17 | 2008-11-25 | The University Of Toledo | Control system for bearingless motor-generator |
| CN1852004A (en) * | 2006-04-30 | 2006-10-25 | 南京航空航天大学 | High-speed motor system having multiple redundance functions |
| CN101207310A (en) * | 2007-12-12 | 2008-06-25 | 南京航空航天大学 | Three-freedom consequent pole permanent magnet motor without bearing of axial direction initiative suspending |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104460442A (en) * | 2014-11-18 | 2015-03-25 | 上海大学 | Mobile phone remote control system for standby generating set |
| CN109525145A (en) * | 2018-11-20 | 2019-03-26 | 湖南根轨迹智能科技有限公司 | A kind of Novel suspending electromagnet unit and levitating electromagnet module |
| CN109525145B (en) * | 2018-11-20 | 2021-08-03 | 湖南根轨迹智能科技有限公司 | Novel suspension electromagnet unit and suspension electromagnet module |
| CN113266583A (en) * | 2021-06-08 | 2021-08-17 | 苏州中科科仪技术发展有限公司 | Magnetic suspension bearing structure and magnetic suspension molecular pump |
| CN117411244A (en) * | 2023-12-14 | 2024-01-16 | 沈阳众创高科节能电机技术有限公司 | Sectional multi-stage cooling water-filled permanent magnet submersible motor |
| CN117411244B (en) * | 2023-12-14 | 2024-02-20 | 沈阳众创高科节能电机技术有限公司 | Sectional multi-stage cooling water-filled permanent magnet submersible motor |
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| CN102570926B (en) | 2015-05-27 |
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