CN1317811C - Permanent magnetic and electromagnetic composite excitation long-stator linear synchronous motor - Google Patents

Permanent magnetic and electromagnetic composite excitation long-stator linear synchronous motor Download PDF

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Publication number
CN1317811C
CN1317811C CNB031291813A CN03129181A CN1317811C CN 1317811 C CN1317811 C CN 1317811C CN B031291813 A CNB031291813 A CN B031291813A CN 03129181 A CN03129181 A CN 03129181A CN 1317811 C CN1317811 C CN 1317811C
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China
Prior art keywords
excitation
permanent
synchronous motor
long stator
magnet
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CNB031291813A
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CN1461096A (en
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杜玉梅
吴祥明
金能强
徐善纲
黄靖宇
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Tongji University
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NATIONAL RESEARCH CENTER OF MAGNETIC SUSPENSION TRANSPORTATION ENGINEERING TECHN
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Abstract

The present invention relates to a long-stator linear synchronous motor with permanent magnetic and electromagnetic composite excitation, which comprises a salient magnetic pole and a direct-current generator which are arranged on a train and are provided with an excitation winding and a magnetic pole core, and a long-stator core and an armature winding which are inlaid along a line of a guide rail. The present invention is characterized in that the magnetic pole core of the salient magnetic pole is embedded with a permanent magnet whose magnetization direction is the same as that of an electric excitation pole. The present invention achieves the purpose that excitation magnetic potential is enhanced under the condition of the limitation for the density of the existing excitation current and the size of the electric magnetic pole so that the height of a magnetic suspension air gap is enhanced.

Description

The long stator synchronous linear motor of permanent magnetism and electromagnetic hybrid excitation
Technical field:
The invention relates to motor, particularly relate to a kind of long stator synchronous linear motor that is used to drive magnetic suspension train.
Background technology:
Magnetic suspension train is a kind of emerging track vehicle, though its mechanism of action proposed in early days already in last century, is subjected to the restriction of technical conditions, and the real reality that drops into is used, and still is the thing in nearly stage.Usually magnetic suspension train adopts long stator linear synchronous motor that the power of driving is provided on the one hand, and magnetic suspension force also is provided on the other hand simultaneously, train and track are disengaged and suspends thereon.Therefore compare with traditional track traffic, gone the friction and the vibration of wheel and track less, can greatly improve the speed of a motor vehicle, reach as high as 500 kms/time, steady and noiselessness.This long stator linear synchronous motor is a kind of salient-pole synchronous motor, for example De Guo Transrapid magnetically supported vehicle is adopted, its long stator iron core rail along the line road is laid, armature winding is embedded in iron core slot, the magnet limbs setting provides exciting current by the linear electric generator that is provided with ON TRAINS to magnet limbs ON TRAINS.This magnet limbs both provided the magnetic field of excitation as long stator linear synchronous motor, also scold effect as electromagnet and long stator iron core composition magnetic field generation magnetic simultaneously, and train is suspended in orbit.Design and structure that this one action two gets can make total simplify, and reduce cost of equipment.But because vehicle-mounted linear electric generator is placed restrictions on by factor such as train deadweight, its power is limited, the exciting current that is provided also is limited, it is conditional that the size of same electromagnetic pole also is subjected to factor restrictions such as light weight, installing space, therefore magnetic field intensity and suspending power also are limited, finally cause the suspension air gap height between train and the guide rail also limited.For example Germany has TR type long stator linear synchronous motor now, and exciting current is 25 amperes, and the excitation magnetic potential of every utmost point is 6750 ampere-turns, and the suspension air gap height that its suspending power supports fully loaded train is 10 millimeter.So little suspension air gap height must require that to the laying of track very high technology and quality are arranged, so its laying expense costliness, influences the development of magnetic suspension traffic.
Summary of the invention:
The invention reside in the long stator linear synchronous motor that a kind of permanent magnetism and electromagnetic hybrid excitation are provided, solution is under existing exciting current density and the size-constrained condition of ending of electromagnetic pole, improve excitation magnetic potential, the technical problem of supply exciting current and raising suspension air gap height.
The technical scheme that the present invention solves the problems of the technologies described above is as follows:
The long stator linear synchronous motor of a kind of permanent magnetism and electromagnetic hybrid excitation, comprise that setting has the magnet limbs of excitation winding and pole core ON TRAINS, and along the long stator iron core and the armature winding of guide rail track laying, it is characterized in that: be provided with DC generator, the winding of this DC generator is made of the coil in the teeth groove that is embedded in this magnet limbs surface; The pole core of this magnet limbs is embedded with permanent magnet, and the direction of magnetization of this permanent magnet is consistent with the electric field pole direction of this strive forward magnetic winding.
The above-mentioned permanent magnetism and the long stator linear synchronous motor of electromagnetic hybrid excitation is characterized in that: this permanent magnet is embedded at said magnetic pole middle part near its yoke place.
The above-mentioned permanent magnetism and the long stator linear synchronous motor of electromagnetic hybrid excitation is characterized in that: this permanent magnet is that aluminium nickel ferro-cobalt system, aluminium ferronickel system or Nd-Fe-B series permanent magnetic material alloy constitute.
The long stator linear motor of above-mentioned permanent magnetism and electromagnetic hybrid excitation is characterized in that:
The height of this permanent magnet on the direction of magnetization is at least 0.15cm.
The present invention has the following advantages:
1. only on field core, set up permanent magnet, and remaining structure has been changed.
2. increased the total excitation magnetic potential of magnet limbs greatly.With the existing TR type long stator linear synchronous motor of Germany is example, when exciting current is 25 ampere-hours, the permanent magnet that to use remanent magnetism be 13500 Gausses, make as the Nd-Fe-B magnet steel of 1cm along direction of magnetization height, every utmost point removes the electric excitation magnetic potential of original 6750 ampere-turns, the total gesture of excitation of 5100 ampere-turns can be provided more, total excitation magnetic potential has been improved about 75%.
3. under the constant condition of excitation pole area, its air gap flux density height, suspending power is big, and the suspension air gap height increases, the required precision of favourable reduction track laying and expense.
4. the stationary component of suspending power is provided with permanent magnet excitation, and electric excitation provides the adjustable component of suspending power.By adjust permanent magnetism along the height of magnetic direction to increase above-mentioned stationary component, then can reduce the exciting current of electric excitation, thereby help alleviating the train deadweight.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the magnet structure schematic diagram.
Embodiment:
See also shown in Figure 1ly, the present invention includes long stator iron core 2, armature winding 1, magnet limbs 3.This long stator iron core 2 is provided with some teeth groove 21 along its length along the guide rail track laying on it.1 of armature winding is embedded in this teeth groove 21.Magnet limbs 3 is provided with ON TRAINS.Magnet limbs 3 has excitation winding 31, pole core 32 and yoke 33; Excitation winding 31 is around every pole core 32, and adjacent two pole cores, 32 1 ends link to each other with yoke 33, and the magnetic boots of pole core 32 other ends are partly in the face of long stator iron core 2.The magnetic boots of this pole core 32 are partly offered and are equipped with the plurality of teeth groove, then are embedded with coil in the teeth groove, and above-mentioned teeth groove and coil have constituted the DC generator 5 that is arranged on the magnet limbs 3.On each pole core 32, be embedded with the permanent magnet 4 that constitutes with permanent-magnet alloy.The direction of magnetization M of this permanent magnet 4 is consistent with magnetic pole (i.e. the electric field pole of this excitation winding 31) direction of this pole core 32, and its height h on the direction of magnetization is at least 0.15cm.This permanent magnet 4 is arranged on pole core 32 middle parts near yoke 33 places.Above-mentioned permanent-magnet alloy is aluminium nickel ferro-cobalt system, aluminium ferronickel system, Nd-Fe-B series magnet steel, preferred Nd-Fe-B series magnet steel.

Claims (5)

1, the long stator linear synchronous motor of a kind of permanent magnetism and electromagnetic hybrid excitation, comprise that setting has the magnet limbs of excitation winding and pole core ON TRAINS, and along the long stator iron core and the armature winding of guide rail track laying, it is characterized in that: be provided with DC generator, the winding of this DC generator is made of the coil in the teeth groove that is embedded in this magnet limbs surface; The pole core of this magnet limbs is embedded with permanent magnet, and the direction of magnetization of this permanent magnet is consistent with the electric field pole direction of this excitation winding.
2, the long stator linear synchronous motor of permanent magnetism according to claim 1 and electromagnetic hybrid excitation is characterized in that: this permanent magnet is embedded at said magnetic pole middle part near its yoke place.
3, the long stator linear synchronous motor of permanent magnetism according to claim 1 and electromagnetic hybrid excitation is characterized in that: this permanent magnet is that aluminium nickel ferro-cobalt system, aluminium ferronickel system or Nd-Fe-B series permanent magnetic material alloy constitute.
4, the long stator linear synchronous motor of permanent magnetism according to claim 2 and electromagnetic hybrid excitation is characterized in that: this permanent magnet is that aluminium nickel ferro-cobalt system, aluminium ferronickel system or Nd-Fe-B series permanent magnetic material alloy constitute.
5, according to the long stator linear motor of claim 1,2,3 or 4 described permanent magnetism and electromagnetic hybrid excitation, it is characterized in that: the height of this permanent magnet on the direction of magnetization is at least 0.15cm.
CNB031291813A 2003-06-12 2003-06-12 Permanent magnetic and electromagnetic composite excitation long-stator linear synchronous motor Expired - Lifetime CN1317811C (en)

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CNB031291813A CN1317811C (en) 2003-06-12 2003-06-12 Permanent magnetic and electromagnetic composite excitation long-stator linear synchronous motor

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Application Number Priority Date Filing Date Title
CNB031291813A CN1317811C (en) 2003-06-12 2003-06-12 Permanent magnetic and electromagnetic composite excitation long-stator linear synchronous motor

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CN1317811C true CN1317811C (en) 2007-05-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102307031A (en) * 2011-09-08 2012-01-04 中南大学 Magnetic suspension linear motion platform based on combination of permanent magnets and electromagnets

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DE102004012746A1 (en) * 2004-03-15 2005-10-06 Thyssenkrupp Transrapid Gmbh Magnet arrangement for a magnetic levitation vehicle
CN100367640C (en) * 2004-09-02 2008-02-06 上海交通大学 Micro cylindrical permanent magnet DC linear driver
DE102005019112A1 (en) * 2005-04-25 2006-10-26 Siemens Ag Combination motor consists of linear and rotation motor systems with at least one of them having hybrid reluctance motor and each having a permanent magnet-free armature with grooves in its axis and periphery
CN100427334C (en) * 2005-09-23 2008-10-22 中国人民解放军国防科学技术大学 Electric electromagnetic hybrid suspension system
CN1937356B (en) * 2006-09-15 2010-05-12 江苏大学 Stator permanent-magnet double salient pole fault-tolerant motor
CN101951045A (en) * 2010-08-12 2011-01-19 哈尔滨理工大学 Rotor structure of composite excitation salient-pole turbogenerator
CN101972933B (en) * 2010-11-19 2012-02-15 沈阳工业大学 Magnetic suspension motion platform of precision heavy machine tool driven by double linear synchronous motors
CN102001014B (en) * 2010-11-19 2014-04-09 沈阳工业大学 Magnetic suspension feeding platform of long stator hybrid excitation linear synchronous motor
CN102011828B (en) * 2010-12-07 2014-04-09 哈尔滨工业大学 Mixed excitation linear electromagnetic damper
CN102350956B (en) * 2011-07-19 2013-03-27 西南交通大学 Magnetic suspension mechanism integrating suspension, guiding and hauling functions
CN103178687A (en) * 2011-12-26 2013-06-26 上海磁浮交通发展有限公司 Bilateral mixed excitation type high-thrust linear synchronous motor
CN102809302A (en) * 2012-09-14 2012-12-05 岳阳鸿升电磁科技有限公司 Bottom mounted electric permanent magnetic agitator for smelting furnace
CN102931803B (en) * 2012-10-10 2015-01-14 中国科学院宁波材料技术与工程研究所 Permanent magnet synchronous linear motor for suppressing magnetic resistance
CN103233996B (en) * 2013-04-28 2016-03-23 哈尔滨工业大学 Serial magnet circuit structure linear electromagnetic damper
CN109391050B (en) * 2017-08-03 2020-09-15 中车株洲电力机车研究所有限公司 Long stator power supply section for magnetic suspension train and long stator linear motor
CN108574393B (en) * 2018-05-25 2020-03-31 江苏大学 Double-stator and double-salient-pole permanent magnet linear motor
CN113022322B (en) * 2019-12-24 2022-07-01 中车株洲电力机车研究所有限公司 Magnetic suspension train and suspension magnetic pole structure thereof
CN213125816U (en) * 2020-09-03 2021-05-04 瑞声科技(南京)有限公司 Linear motor

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Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
US4924778A (en) * 1988-03-30 1990-05-15 Kabushiki Kaisha Toshiba Attraction type magnetic levitating apparatus
CN1409470A (en) * 2002-08-16 2003-04-09 哈尔滨工业大学 Straight line propeller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102307031A (en) * 2011-09-08 2012-01-04 中南大学 Magnetic suspension linear motion platform based on combination of permanent magnets and electromagnets

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