CN204652178U - Bimorph transducer superconduction exciting field modulating motor - Google Patents

Bimorph transducer superconduction exciting field modulating motor Download PDF

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Publication number
CN204652178U
CN204652178U CN201520288687.3U CN201520288687U CN204652178U CN 204652178 U CN204652178 U CN 204652178U CN 201520288687 U CN201520288687 U CN 201520288687U CN 204652178 U CN204652178 U CN 204652178U
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China
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stator
winding
rotor
armature winding
motor
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CN201520288687.3U
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Chinese (zh)
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程明
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Southeast University
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Southeast University
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Abstract

The utility model discloses a kind of bimorph transducer superconduction exciting field modulating motor, comprise ecto-entad or the first stator arranged successively from left to right, rotor and the second stator, between described first stators and rotators, there is the first air gap, between described second stators and rotators, there is interstice; Described first stator comprises stator yoke and armature winding, and this stator yoke has one near the first side of rotor, and described armature winding is positioned at this first side; Described rotor comprises spaced magnetic conductive iron block and non-magnet material block; Described second stator comprises non-magnetic stator support, and is fixed on the high-temperature superconductor excitation winding on stator support.The utility model volume is little, lightweight, efficiency is high, both the characteristic that high-temperature superconductor winding is applicable to direct current had been played, turn avoid necessary cooling fluid rotary seal problem motor stator in conventional rotors excitation type high-temperature superconducting motor and adopt modular construction, be convenient to transport and in-site installation, at sea the occasion such as wind-powered electricity generation has good prospect.

Description

Bimorph transducer superconduction exciting field modulating motor
Technical field
The utility model belongs to technical field of motors, especially a kind of field modulating motor with superconduction excitation.
Background technology
Along with the fast development of offshore wind farm, ship's electrical propulsion etc., more and more higher requirement is proposed to the technical indicator such as volume, weight, efficiency of electric system.For wind-driven generator, along with wind power generation is from land to sea development, for improving generating efficiency, reduce the cost of electricity-generating of unit capacity, single-machine capacity is increasing, and the wind turbine generator of 5MW enters to run, is developing 10MW or more jumbo wind-driven generator in the world at present.Along with the increase of single-machine capacity, generating set weight and volume becomes very huge, such as, the common permanent magnet direct-driving aerogenerator weight of 10MW is up to 300 tons, diameter is more than 10 meters, severe challenge is proposed to pylon, makes the manufacture of wind turbine generator, transport, installation etc. bring larger difficulty simultaneously.Therefore, how to reduce the volume and weight of wind-driven generator, improve generating efficiency, become the focus paid close attention to both at home and abroad.
In recent years, developing rapidly of high temperature superconductor technology, makes high temperature superconducting materia obtain extensive and deep research in fields such as motors.Data with existing shows, under Liquid Nitrogen Cooling Condition, the Trapped field of high-temperature superconducting block can reach 2.3T-77K, and far above the magnetic field intensity of current permanent magnet, and the critical current density of second generation high-temperature superconductor Y anchor line (string) material also reaches 3 × 10 6a/cm 2(77K, 0T).This means high temperature superconducting materia to be replaced the winding in conventional motors and permanent magnet, the power density of motor can be significantly improved, reduce motor weight, reduce motor volume.There are some researches show, be all the superconducting motor of 10MW, its weight is only 150 tons, and diameter is lower than 5 meters, and its weight and volume all can be reduced to 50% of conventional motor.
But, the synchronous machine of conventional structure, excitation winding is positioned at rotor, and not only exciting current need import through brush and slip ring, and cooling fluid more needs to adopt rotary seal input, and make electric machine structure complicated, cost is high, and reliability reduces; And the superconduction magnetic flux switching motor changing on stator excitation type motor (as the flux switch permanent magnet motor) basis in recent years occurred and come, its operation principle determines this motor must form salient pole type stators and rotators by ferromagnetic material, and the saturation magnetic induction of ferromagnetic material limits the performance of superconductor performance.Meanwhile, excitation winding and armature winding are arranged in same stator core, and arrangement space difficulty, also limit the further raising of power of motor density.Therefore, development high power density, high efficiency, new superconductive motor simple and reliable for structure have profound significance.
Utility model content
Utility model object: provide a kind of bimorph transducer superconduction exciting field modulating motor, it has static superconduction excitation winding, and torque density and power factor higher, can be applicable to large-power occasions, thus solve prior art exist the problems referred to above.
Technical scheme: a kind of bimorph transducer superconduction exciting field modulating motor, comprise ecto-entad or the first stator arranged successively from left to right, rotor and the second stator, between described first stators and rotators, there is the first air gap, between described second stators and rotators, there is interstice;
Described first stator comprises stator yoke and armature winding, and this stator yoke has one near the first side of rotor, and described armature winding is positioned at this first side; Described rotor comprises spaced magnetic conductive iron block and non-magnet material block; Described second stator comprises non-magnetic stator support, and is fixed on the high-temperature superconductor excitation winding on stator support;
The number of pole-pairs of described second stator superconduction excitation winding p sc , rotor magnetic conductive iron block number n r , and the equivalent number of pole-pairs of armature winding p s meet following relation: p sc =n r - p s .
Preferably, described armature winding is conventional armature winding or high-temperature superconductor winding.Described armature winding is centralized winding or distributed winding.Stator core can be salient-pole structure or non-salient pole structure.Side near rotor on described first stator is evenly provided with stator tooth, and form groove between adjacent stators tooth, described armature winding is embedded in this groove.
Beneficial effect: compared with existing similar motor, have the following advantages:
1. armature winding and superconduction excitation winding are placed in the first stator and the second stator respectively, and space availability ratio is high, compact conformation;
2. high-temperature superconductor excitation winding is placed in the second stator, transfixion, both the characteristic that high-temperature superconductor winding is applicable to direct current had been played, turn avoid necessary cooling fluid rotary seal problem in conventional rotors excitation type high-temperature superconducting motor, exciting current can directly import, and does not need through brush, slip ring; Superconduction cooling fluid can directly pass into, and does not need rotary seal, and therefore, electric machine structure is simple, and cost is low, good cooling results, and reliability is high, energy-efficient;
3. the second stator is non iron-core structure, and air-gap field can up to more than 2.5T by the restriction of iron core cutter characteristic, favourable raising motor torque/power density;
4. make use of the modulating action of rotor magnetic inductive block, when the second stator superconduction excitation field number of pole-pairs is certain, by appropriate design adjustable magnetic block number, the field pole logarithm needed can be obtained outside in air gap, realizing from speedup or from slowing down;
5. motor stator is easy to adopt modular construction, is convenient to transport and in-site installation, and at sea the occasion such as wind-powered electricity generation has good application prospect;
6. armature winding is placed in external stator, is easy to heat radiation and cooling; Superconduction excitation winding is placed in internal stator, because the loss of superconduction winding own is little, there is the cooling effect of superconduction cooling fluid in addition, overcoming in conventional Double-stator motor internal stator because being wrapped in rotor and external stator, cause heat radiation difficulty, need to take the problems such as special cooling provision.
Accompanying drawing explanation
Fig. 1 is cross section structure schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, in the drawings, the first stator, rotor and the second stator concentric arrangement.From outside to inside, the first stator (external stator) 1, first air gap (outer air gap) 2 of concentric, rotor 3, interstice (interior air gap) 4 and the second stator (internal stator) 5 is followed successively by; The centralized winding 13 of external stator that described first stator (external stator) 1 comprises stator yoke 11, stator tooth 12 and embeds in external stator groove;
Described rotor 3 comprises circumferentially equally distributed rotor magnetic conductive iron block 31 and non-magnetic piece 32; Described second stator 5(internal stator) comprise non-magnetic support 51 and the high-temperature superconductor excitation winding 52 be fixed thereon.Described first stator 1(external stator) there are 12 teeth, each tooth overlaps a concentratred winding, and the winding on 12 teeth connects according to certain rules, forms three-phase symmetric winding; Described rotor is arranged by 8 magnetic conductive iron blocks and 8 non-magnetic block gaps, is circumferentially uniformly distributed; 4 superconduction magnet exciting coils on second stator (internal stator) 5 pass into after direct current and form 2 pairs of pole fields, after the modulation of rotor magnetic inductive block, form 6 pairs of pole fields in air gap 2 outside.
In the utility model, the superconduction excitation winding on the second stator (internal stator) 5, can be designed to different number of pole-pairs according to application needs; Rotor magnetic conductive iron block number can get different masses number as required, but superconduction excitation field number of pole-pairs p sc , rotor magnetic conductive iron block number n r with external stator armature winding equivalence number of pole-pairs p s must relation be met: n r =p sc + p s .
In the utility model, external stator iron core can adopt hidden pole type structure, and armature winding can adopt distributed winding, is fixed on external stator iron core by armature winding by modes such as epoxy castings.
In the utility model, the size and dimension of rotor magnetic conductive iron block, can be optimized according to design needs.
Bimorph transducer superconduction exciting field modulating motor of the present utility model, external stator armature winding field pole logarithm is different from internal stator superconduction excitation field number of pole-pairs.
Operation principle: after superconducting wire enters superconducting state, its D.C. resistance is 0, can pass into very large DC excitation electric current wherein, thus in interior air gap, sets up number of pole-pairs be p schigh-intensity magnetic field, through the modulating action of rotor magnetic inductive block, setting up number of pole-pairs outside in air gap is p s magnetic field, the armature winding on this magnetic field linkage external stator.Rotate if rotor is dragged by prime mover, then will there is alternation in outer air-gap field thereupon, in armature winding, induce electromotive force, external electromotive power output; If pass into alternating current in armature winding, then this electric current and magnetic field interaction use, produces electromagnetic torque, drives rotor to rotate, can external output mechanical power.
In the utility model, the external stator of bimorph transducer superconduction exciting field modulating motor, outer air gap, rotor, interior air gap and internal stator, not only can concentric arrangement from outside to inside, also the mode of (otherwise or) can arrange by from left to right, form axial magnetic field bimorph transducer superconduction exciting field modulating motor.In the utility model, high temperature superconducting materia is often referred to the material in liquid nitrogen temperature (77 K) above superconduction.
In a word, high-temperature superconductor excitation winding is placed in internal stator by the utility model, and armature winding is placed in external stator, and utilizes the magnetic field modulation effect of rotor magnetic conductive iron block, can realize the magnetic field of motor itself from speedup.Compared with existing superconducting motor, realizing, superconduction winding is static, do not need brush, slip ring and rotary seal, and utilize the field modulating action of rotor magnetic conductive iron block, realize from speedup or from slowing down, compact conformation, winding technique is convenient, motor volume and weight can significantly reduce, and torque density is improved.Therefore, bimorph transducer superconduction exciting field modulating motor described in the utility model has very high scientific research value and engineering practical value.
More than describe preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned execution mode; within the scope of technical conceive of the present utility model; can carry out multiple equivalents to the technical solution of the utility model, these equivalents all belong to protection range of the present utility model.It should be noted that in addition, each the concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible compound mode.In addition, also can carry out combination in any between various different execution mode of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Claims (5)

1. a bimorph transducer superconduction exciting field modulating motor, it is characterized in that, comprise ecto-entad or the first stator (1) arranged successively from left to right, rotor (3) and the second stator (5), there is between described first stators and rotators the first air gap (2), there is between described second stators and rotators interstice (4);
Described first stator comprises stator yoke (11) and armature winding (13), and this stator yoke has one near the first side of rotor, and described armature winding is positioned at this first side; Described rotor comprises spaced magnetic conductive iron block (31) and non-magnet material block (32); Described second stator comprises non-magnetic stator support (51), and is fixed on the high-temperature superconductor excitation winding (52) on stator support;
The number of pole-pairs of described second stator superconduction excitation winding p sc , rotor magnetic conductive iron block number n r , and the equivalent number of pole-pairs of armature winding p s meet following relation: p sc = n r -p s .
2. bimorph transducer superconduction exciting field modulating motor as claimed in claim 1, it is characterized in that, described armature winding (13) is conventional armature winding or high-temperature superconductor winding.
3. bimorph transducer superconduction exciting field modulating motor as claimed in claim 1, it is characterized in that, described armature winding (13) is centralized winding or distributed winding.
4. bimorph transducer superconduction exciting field modulating motor as claimed in claim 1, it is characterized in that, stator core can be salient-pole structure or non-salient pole structure.
5. bimorph transducer superconduction exciting field modulating motor as claimed in claim 4, is characterized in that, the side near rotor on described first stator is evenly provided with stator tooth (12), and form groove between adjacent stators tooth, described armature winding is embedded in this groove.
CN201520288687.3U 2015-05-06 2015-05-06 Bimorph transducer superconduction exciting field modulating motor Expired - Fee Related CN204652178U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104883015A (en) * 2015-05-06 2015-09-02 东南大学 Dual-stator superconductive exciting field modulating motor
CN105141092A (en) * 2015-10-15 2015-12-09 东南大学 Magnetic gear type double-stator hybrid permanent magnet memory motor
CN105337429A (en) * 2015-11-09 2016-02-17 江苏大学 Hybrid excitation-type stator partition-type hybrid permanent magnet flux switching memory motor
CN105391202A (en) * 2015-11-20 2016-03-09 武汉理工大学 Stator electro-magnetic vernier motor
CN109639103A (en) * 2019-02-19 2019-04-16 南京邮电大学 Pole of rotation shoe high-temperature superconductor synchronous motor
CN111404342A (en) * 2020-03-10 2020-07-10 东南大学 Combined rotor modulator magnetic gear composite motor
CN113067421A (en) * 2021-03-29 2021-07-02 东南大学 Field modulation type outer rotor vernier motor adopting direct-current superconducting excitation and application
CN113285578A (en) * 2021-06-09 2021-08-20 东南大学 Static seal excitation single-loop superconducting magnetic gear motor and application

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104883015A (en) * 2015-05-06 2015-09-02 东南大学 Dual-stator superconductive exciting field modulating motor
WO2016177023A1 (en) * 2015-05-06 2016-11-10 东南大学 Dual-stator superconductive exciting field modulating motor
CN104883015B (en) * 2015-05-06 2017-09-19 东南大学 Bimorph transducer superconduction exciting field modulating motor
CN105141092A (en) * 2015-10-15 2015-12-09 东南大学 Magnetic gear type double-stator hybrid permanent magnet memory motor
CN105337429A (en) * 2015-11-09 2016-02-17 江苏大学 Hybrid excitation-type stator partition-type hybrid permanent magnet flux switching memory motor
CN105337429B (en) * 2015-11-09 2018-02-27 江苏大学 A kind of hybrid excitation type stator partition type hybrid permanent magnet magnetic flux switches memory electrical machine
CN105391202A (en) * 2015-11-20 2016-03-09 武汉理工大学 Stator electro-magnetic vernier motor
CN105391202B (en) * 2015-11-20 2019-04-30 武汉理工大学 A kind of stator electrical excitation vernier motor
CN109639103A (en) * 2019-02-19 2019-04-16 南京邮电大学 Pole of rotation shoe high-temperature superconductor synchronous motor
CN111404342A (en) * 2020-03-10 2020-07-10 东南大学 Combined rotor modulator magnetic gear composite motor
CN113067421A (en) * 2021-03-29 2021-07-02 东南大学 Field modulation type outer rotor vernier motor adopting direct-current superconducting excitation and application
CN113285578A (en) * 2021-06-09 2021-08-20 东南大学 Static seal excitation single-loop superconducting magnetic gear motor and application

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150916

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CF01 Termination of patent right due to non-payment of annual fee