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 cores

Info

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Withdrawn
Application number
DE19772731818
Other languages
German (de)
Inventor
Herbert Prof Dr Ing Weh
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19772710156 external-priority patent/DE2710156C2/en
Application filed by Individual filed Critical Individual
Priority to DE19772731818 priority Critical patent/DE2731818A1/en
Publication of DE2731818A1 publication Critical patent/DE2731818A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61BRAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B13/00Other railway systems
    • B61B13/08Sliding or levitation systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L13/00Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K41/00Propulsion 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
    • H02K41/02Linear motors; Sectional motors
    • H02K41/03Synchronous 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

The magnets of the induction traction system have pairs of thin permanent magnets sandwiched between soft iron cores set in parallel. The iron cores are enhanced by electric fields to add to the permanent fields for traction control. The thin permanent magnets ensure a thin gap control without any large residuals, while the sandwiched cores are designed to provide maximum field with minimum current.

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)

Schutzansprüche 1.) Magnetanordnung zur Erzeugung von anziehenden Kräften oder in kombination mit einem Langstater von anzichenden Kräften und tangentialen vortriebrkräften bie der eine Grundkomponente des magnetischen Feldes durch Dauermagnete und ein Steueranteil durch stromdurchflossene Spulen erzeugt wird, gekennzeichnet dadurch, daß die Permanentmagnete mindestens zwei parallele Flußanteile je aktiven Pol erzeugen und in den Nachbarpolen keine Magnete untergebracht sind, wobei die Schichtdicke der P-Magnete so gering ist, daß sie im Vergleich zum Luftspalt keinen nennenswerten magnetischen Widerstand darstellen und ein Weicheisenrück-Schluß (s. P 27 10 156.0) auf der Seite der Magnete vermieden werden kann. Protection claims 1.) Magnet arrangement for generating attractive Forces or in combination with a long stater of forces to be measured and tangential Propulsion forces bie a basic component of the magnetic field by permanent magnets and a control component is generated by current-carrying coils in that the permanent magnets have at least two parallel flux components each active Pole generate and no magnets are accommodated in the neighboring poles, whereby the The layer thickness of the P-magnets is so small that they do not have any in comparison to the air gap represent a significant magnetic resistance and a soft iron return (s. P 27 10 156.0) on the side of the magnets can be avoided. 2.) Magnetanordnung zur Erzeugung von geregelten anziehenden Kräften nach Anspruch 1 in E-förmiger Anordnung mit einer massiven Schiene als Rtickschluß, verwendet zur verlustarmen seitlichen Führung des Fahrzeuges. 2.) Magnet arrangement for generating regulated attractive forces according to claim 1 in an E-shaped arrangement with a solid rail as a return connection, used for low-loss lateral guidance of the vehicle.
DE19772731818 1977-03-09 1977-07-14 Magnetic system for induction motor - has thin permanent magnets sandwiched between parallel soft iron cores Withdrawn DE2731818A1 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (7)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
EP0334901B1 (en) Transverse flow machine in a collector arrangement
DE19804277A1 (en) Dynamo with static permanent magnet(s) for water-power stations, thermal power stations or atomic power stations
EP1739319A2 (en) Electro-magnetic bearing arrangement
DE10220822B4 (en) Linear motor
DE3927454C2 (en)
DE2731818A1 (en) Magnetic system for induction motor - has thin permanent magnets sandwiched between parallel soft iron cores
EP0160186B1 (en) Magnet structure for a long stator drive
DE2542299A1 (en) Linear motor for indicating and writing meters - has stator core embraced by induction winding, and external iron return core
DE2851038A1 (en) LINEAR ASYNCHRONOUS MOTOR
DE29705315U1 (en) DC linear motor with integrated position measuring system
DE4115887A1 (en) Permanent magnet rotor dynamoelectric machine - has rotor-coaxial stator coil with axial flux paths in rotor and stator
DE2238402C2 (en) Tracked contactless vehicle supporting system - has additional winding in pole faces for side guidance
DE3122695C2 (en)
DE2121247A1 (en) Dynamic-magnetic levitation device for a route-bound transport arrangement
DE102012009134A1 (en) Magnetic circuit for producing regulated magnetic flux between C-shaped steel rail and coil-less support part for vehicle, has middle part of magnets adjusted based on gap length for normal force stabilization by control force of actuator
DE670564C (en) DC generator for constant power
DE3316833C2 (en) DC ring winding for an asynchronous generator
DE2462489A1 (en) Brushless linear motor running on DC - has permanent magnets forming moving part and has stationary part with iron core
DE19850952A1 (en) Reluctance motor with rotor having at least two magnet poles with counter poles on same axis
DE758669C (en) Device for improving the error curve of induction counters
AT53562B (en) Stator winding for single-phase induction motors.
DE2112708A1 (en) Arrangement for the management of lifting force generation with gearless movement devices
DE2240704C3 (en) Electrodynamic traveling field motor (linear motor) of synchronous design
DE2802970C2 (en) Single phase induction machine
DE2429886A1 (en) Low power loss electric traction - with some or all of field coils replaced by permanent magnets

Legal Events

Date Code Title Description
AF Is addition to no.

Ref country code: DE

Ref document number: 2710156

Format of ref document f/p: P

8141 Disposal/no request for examination