DE2731818A1 - Magnetic system for induction motor - has thin permanent magnets sandwiched between parallel soft iron cores - Google Patents
Magnetic system for induction motor - has thin permanent magnets sandwiched between parallel soft iron coresInfo
- Publication number
- DE2731818A1 DE2731818A1 DE19772731818 DE2731818A DE2731818A1 DE 2731818 A1 DE2731818 A1 DE 2731818A1 DE 19772731818 DE19772731818 DE 19772731818 DE 2731818 A DE2731818 A DE 2731818A DE 2731818 A1 DE2731818 A1 DE 2731818A1
- Authority
- DE
- Germany
- Prior art keywords
- permanent magnets
- magnets
- soft iron
- iron cores
- forces
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
- B61B13/08—Sliding or levitation systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
Abstract
Description
BeschgeibungDescription
Die in obiger Anmeldung bescbriebene Anerdnnung verfolgt das ziel.The recognition described in the above registration pursues the goal.
der leistungsaumen Erznogung anziskeuler kräfte und in Ruckstion init einem Stator als Rückschlußelement für das magnetische Feld znsätzlich der Erzeugung von Vortricbskräften zu dienen, Für die bei der Magnetschwebstechnik gefouderte Stabilisierung der Tragkräfte werden in Spulen rasch stellbare Ströme zum Aufbau eines magnetischen Zusatzfeldes geführt. Dieses Zusatzfeld überlagert sich im Spalt zwischen Magnet und äußerem Rückschluß dem Feld der Permanentmagnete.The range of performance is nourished by contorted forces and in jerk init a stator as a return element for the magnetic field in addition to the generation to serve by Vortricbkraftften, for those trained in magnetic levitation technology Stabilization of the load-bearing forces are quickly adjustable currents in coils to build up an additional magnetic field. This additional field is superimposed in the gap between the magnet and the external yoke is the field of the permanent magnets.
Um die Größe der notwendigen Steuerspule und die Steuerleistung klein zu halten, bewährt sich grundsätzlich der in P 27 10 156.0 beschriebene Weicheisenpfad des Magnets. Er vermittelt einen hohen magnetischen Leitwert, so daß die Summe aller Ströme, die das magnetische Steuerfeld erzeugen, nur klein zu sein braucht.To make the size of the necessary control coil and the control power small the soft iron path described in P 27 10 156.0 has proven its worth of the magnet. It imparts a high magnetic conductance, so that the sum of all Currents that generate the magnetic control field only need to be small.
Die Nachteile des Weicheisenpfades bestehen darin, daß er auch einen Teil des vom Permanentmagnet erzeugten Flusses absaugt, der somit der Tragkrafterzeugung verloren geht. Der P-Magnet muß größer dimensioniert werden.The disadvantages of the soft iron path are that it also has a Sucks off part of the flux generated by the permanent magnet, thus generating the load capacity get lost. The P-magnet must be dimensioned larger.
Die im Zusatzpatent beschriebene Anordnung kommt insbesondere bei modernen Magneten ohne Weicheisenrückschluß aus und vermeidet gleichzeitig den bekannten Nachteil einer großen notwendigen Steuerdurchflutung.The arrangement described in the additional patent comes in particular at modern magnets without a soft iron back yoke and at the same time avoids the well-known Disadvantage of a large necessary tax flow.
Es wird davon ausgegangen, daß kleine Steuerdurchflutungen in Anbetracht der niedrigen magnetischen Leitfähigkeit des Permanentmagnetes eine kleine Schichtdicke des Magnetmaterials bedingen. Der magnetische Grundfluß, der durch den Dauermagne erzeugt wird, kann auch bei Anwendung kleiner Schichtdi ken als Summe kleiner Flußdichten mal einer großen Durchtrittsfläche bereitgestellt werden. Dies führt auf einen qroßflächiyen Permanentmagnelen,der anch für den zu überlagernden Steuer fluß einen kleinen magnetischen widerstand im Vergleich zum Luftspalt darstellt. Um im Grenzfall das Perm.nentfeld im Spalt aufzuheben, benötigt die S enen icklung eine der Magnetschichtdicke proportienale elektaisel Durchflutung (sti spme), die tomit klein ist.It is assumed that small tax flows in consideration the low magnetic conductivity of the permanent magnet a small layer thickness of the magnet material. The basic magnetic flux that flows through the permanent magnet is generated, can ken even when using smallschichtdi as the sum of small flux densities times a large passage area to be provided. this leads to on a large area permanent magnet, also for the tax to be superimposed flux represents a small magnetic resistance compared to the air gap. In order to cancel the permanent field in the gap in the borderline case, the winding needs to be made an electric current proportional to the thickness of the magnetic layer (sti spme), the tomit is small.
Bild 1 zeigt als Beispiel eine Magnetanordnung, von der 2 Pole als Erregeranordnung für die integrierte Magnetfahrtechnck gezeichnet sind. Tm Nordpol sind mehrere Permanelatmagnete eingesetzt, die den Grundfluß erzeugen, Seine Größe ist so gewählt, daß er zur weitgehenden Kompensation des Fahrzeuggewichtes ausreicht. Die 4 Dauermagnete 1, 2, 3, 4 erzeugen vier Flußanteile, die im Luftspalt benachbart austreten. Die umgebenden Teile sind aus Weicheisen, das bei großflächigen Polanordnungen und hohen dyn-mischen Anforderungen an die Regelbarkeit zwckmäßig lamelliert hergestellt wird.Figure 1 shows an example of a magnet arrangement, of which 2 poles are used as Exciter arrangement for the integrated magnetic drive technology are drawn. Tm north pole several permanent magnets are used, which generate the basic flow, its size is chosen so that it is sufficient to largely compensate for the weight of the vehicle. The 4 permanent magnets 1, 2, 3, 4 generate four flux components that are adjacent in the air gap step out. The surrounding parts are made of soft iron, which is the case with large-area pole arrangements and high dynamic demands on controllability, manufactured with laminated panels will.
Im unteren Bereich des Poles wird der Fluß in zwei Jochteilen gesammelt, die zu den benachbarten Südpolen führen.In the lower area of the pole the river is collected in two yoke parts, which lead to the neighboring southern poles.
Die in der Pollücke gezeichnete Steuerwicklung 5 und 6 besteht aus 2 Spulen, wovon jeweils eine dem Nord- bzw. Südpol zugeordnet ist. Der Steuerfluß verläuft auf dem selben Pfad wie der Fluß der Dauermagnete; er überlagert sich also direkt dem Grundfluß. Je nach Stromrichtung wirkt er verstärkend oder schwächend.The control winding 5 and 6 drawn in the pole gap consists of 2 coils, one of which is assigned to the north or south pole. The tax flow runs on the same path as the flux of permanent magnets; so it is superimposed directly to the basic river. Depending on the direction of the current, it has a strengthening or weakening effect.
Das besondere Kennzeichen der dargestellten Lösung ist in der Parallelschaltung mehrerer Flußpfade eines Poles zu sehen, die zu den beschsiebenen Vorteilen für die Steuerwicklung und die Steuerleistung führt, ohne daß eine voluminöse Form der Magrete entsteht. Das zwischen den Permanentmagneten liegende Weicheisen übernimmt dabei die Aufgabe eines Flußsammlers hoher magnelscher Leitfähigkeit und ermöglicht auch die gegenüber der wirksamen Polfläche schräge Anordnung der Magneten. Jeder zweite Pol ist mit Permanentmagneten eine Art "Grundflußerzeuger", während die benachbarten Pole passiv gestaltet sind.The special feature of the solution shown is the parallel connection to see several flux paths of a pole, which lead to the despicable advantages for the control winding and the control power leads without a voluminous form of the Magrete arises. The soft iron between the permanent magnets takes over thereby the task of a flux collector of high magnetic conductivity and enables also the oblique arrangement of the magnets in relation to the effective pole face. Everyone second pole is with permanent magnets a kind of "basic flux generator", while the neighboring poles are designed to be passive.
Das Prinzip der parallelen Flußpfade, das offenbar zur Reduktion der notwendigen Steuerdurchflutung ausgenützt werden kann, ist auch bei dem in Bild 2 gezeichneten E-förmigen geregelten Perrn3nntmagneten ziir Anwendung gekosuen. Magnete dieser Bauform eignen sich z.B. zur Erzeugung von seitlichen Führkräften bot Schwebefahrzeugen besonders gut. Insbesondere im zusammenwirken mit einer massiven Tragschiene bringt dieser Magnet Vorteile gegenüber der konventionellen U-Form.The principle of parallel flow paths, which apparently leads to the reduction of the necessary control flow can be used, is also with the one in the picture 2 drawn, E-shaped, regulated permanent magnets for use. Magnets of this design are suitable, for example, for generating lateral leadership forces offered suspension vehicles particularly well. Especially in conjunction with a massive This magnet has advantages over the conventional U-shape on a mounting rail.
Durch die nun vorhandenen parallelen Flußanteile ergeben sich die bereits oben beschriebenen Vorteile für die Dimensionierung des Magneten und die Steuerleistung. Darüber hinaus -läßt sich eine beträchtliche Verringerung der Verluste in der massiven Schiene nachweisen. Gegenüber dem U-Magnet führt die Schiene nur knapp die Hälfte des magnetischen Flusses. Hierdurch verringert sich bei Bewegung des Feldes gegenüber der Schiene die induzierte Spannung auf den halben Wert. Der Strom, der proportional der Spannung kleiner wird, bedingt Verluste, die etwa auf ein Viertel derjenigen des U-Magneten absinken. Hierbei ist vorausgesetzt, daß die Gesamtausdehnung beider Magnete sich etwa entspricht.The now existing parallel flow components result in the advantages already described above for the dimensioning of the magnet and the Tax benefit. In addition, a considerable reduction in losses can be achieved prove in the massive rail. Opposite the U-magnet, the rail only leads almost half of the magnetic flux. This reduces when moving of the field opposite the rail, the induced voltage is reduced to half the value. Of the Current, which is proportionally lower than the voltage, causes losses that approx a quarter of that of the U magnet. It is assumed that the The total expansion of both magnets is roughly equivalent.
Aufgrund der gerinseren Polbreite genügt beim Führmagnet eine Unterteilung in zwei parallele Abschnitte.Due to the smaller pole width, a subdivision is sufficient for the guide magnet into two parallel sections.
Der E-förmige Magnet erweist sich auch vom Gewicht her der U-förmigen Anordnung überlegen, wobei zu berücksichtigen ist, daß der Wicklungsquerschnitt aufgrund der beschriebenen Vorteile kleiner ausgelegt werden kann.The E-shaped magnet also proves to be the U-shaped one in terms of weight Superior arrangement, taking into account that the winding cross-section can be made smaller due to the advantages described.
L e e r s e i t eL e r s e i t e
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772731818 DE2731818A1 (en) | 1977-03-09 | 1977-07-14 | Magnetic system for induction motor - has thin permanent magnets sandwiched between parallel soft iron cores |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772710156 DE2710156C2 (en) | 1977-03-09 | 1977-03-09 | Maglev |
DE19772731818 DE2731818A1 (en) | 1977-03-09 | 1977-07-14 | Magnetic system for induction motor - has thin permanent magnets sandwiched between parallel soft iron cores |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2731818A1 true DE2731818A1 (en) | 1979-02-01 |
Family
ID=25771702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19772731818 Withdrawn DE2731818A1 (en) | 1977-03-09 | 1977-07-14 | Magnetic system for induction motor - has thin permanent magnets sandwiched between parallel soft iron cores |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2731818A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3410119A1 (en) * | 1984-03-20 | 1985-10-03 | Thyssen Industrie Ag, 4300 Essen | EXCITATION ARRANGEMENT FOR A LONG STATOR DRIVE |
EP0373987A1 (en) * | 1988-11-22 | 1990-06-20 | Shinko Electric Co. Ltd. | Strong magnetic thrust force type actuator |
US5057725A (en) * | 1988-12-27 | 1991-10-15 | Sankyo Seiki Mfg. Co., Ltd. | Rotary electric machine |
DE102009025337A1 (en) | 2008-07-10 | 2010-01-14 | Weh, Herbert, Prof. Dr.-Ing. Dr. h.c. | Magnetic support arrangement for use with rail part, for magnetically operated vehicle, has carrier rail equipped with field coil, head part of magnetic field produced in air gap, and constriction point formed between poles at air gap |
CN102700429A (en) * | 2012-05-14 | 2012-10-03 | 西南交通大学 | Parallel connection type permanent magnetic hybrid magnetic levitation device for magnetic levitation train |
-
1977
- 1977-07-14 DE DE19772731818 patent/DE2731818A1/en not_active Withdrawn
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3410119A1 (en) * | 1984-03-20 | 1985-10-03 | Thyssen Industrie Ag, 4300 Essen | EXCITATION ARRANGEMENT FOR A LONG STATOR DRIVE |
EP0373987A1 (en) * | 1988-11-22 | 1990-06-20 | Shinko Electric Co. Ltd. | Strong magnetic thrust force type actuator |
US5057725A (en) * | 1988-12-27 | 1991-10-15 | Sankyo Seiki Mfg. Co., Ltd. | Rotary electric machine |
DE102009025337A1 (en) | 2008-07-10 | 2010-01-14 | Weh, Herbert, Prof. Dr.-Ing. Dr. h.c. | Magnetic support arrangement for use with rail part, for magnetically operated vehicle, has carrier rail equipped with field coil, head part of magnetic field produced in air gap, and constriction point formed between poles at air gap |
DE102009025337B4 (en) * | 2008-07-10 | 2010-12-09 | Weh, Herbert, Prof. Dr.-Ing. Dr. h.c. | Supporting magnet with permanent magnets and current position |
CN102700429A (en) * | 2012-05-14 | 2012-10-03 | 西南交通大学 | Parallel connection type permanent magnetic hybrid magnetic levitation device for magnetic levitation train |
CN102700429B (en) * | 2012-05-14 | 2014-02-19 | 西南交通大学 | Parallel connection type permanent magnetic hybrid magnetic levitation device for magnetic levitation train |
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Legal Events
Date | Code | Title | Description |
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AF | Is addition to no. |
Ref country code: DE Ref document number: 2710156 Format of ref document f/p: P |
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8141 | Disposal/no request for examination |