WO2005117243A1 - Transformateur electromecanique synchrone - Google Patents

Transformateur electromecanique synchrone Download PDF

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Publication number
WO2005117243A1
WO2005117243A1 PCT/SI2005/000015 SI2005000015W WO2005117243A1 WO 2005117243 A1 WO2005117243 A1 WO 2005117243A1 SI 2005000015 W SI2005000015 W SI 2005000015W WO 2005117243 A1 WO2005117243 A1 WO 2005117243A1
Authority
WO
WIPO (PCT)
Prior art keywords
poles
stator
rotor
magnetic
electromagnetic
Prior art date
Application number
PCT/SI2005/000015
Other languages
German (de)
English (en)
Other versions
WO2005117243B1 (fr
Inventor
Marko Petek
Original Assignee
Meier, Mojca
Petek, Alenka
Petek, Maja Marija
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
Application filed by Meier, Mojca, Petek, Alenka, Petek, Maja Marija filed Critical Meier, Mojca
Priority to EP05740427A priority Critical patent/EP1884013A1/fr
Priority to US11/911,830 priority patent/US7723888B2/en
Publication of WO2005117243A1 publication Critical patent/WO2005117243A1/fr
Publication of WO2005117243B1 publication Critical patent/WO2005117243B1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
    • 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

Definitions

  • the invention relates to a synchronous electromechanical converter. It can be classified according to the international classification in H02K16 / 04, H02K21 / 12, H02K26 and HO 2K 1/06.
  • the invention solves the problem of designing a multi-phase synchronous electromechanical converter with concentrated windings, which has a large torque, a very small or negligible cogging torque, a small one
  • the electromagnetic poles contain magnetically permeable pole cores.
  • the solutions can be divided into three groups.
  • the first group contains the solutions, each with a rotor and a stator, which are described both in the patents EP0094978, EP0216202, EP0291219, EP0295718, DE10049883, WO2004006415, DE10322018 and the like, which treat the designs with approximately evenly distributed electromagnetic poles and in that Patent EP0454183, where the electromagnetic poles are distributed in sections at the same distance as rotor poles.
  • the solutions with one stator have significantly poorer thermal permeability between the stator windings and the housing, large mechanical bending loads on the rotor, greater induced rotor vibrations and poorer utilization of the magnetic poles of the rotor. Because of a larger parasite magnetic flux between adjacent electromagnetic poles, the solutions with a stator and a rotor have a smaller specific torque.
  • the solutions with two rotors and one stator Some designs are described in WO03103114, US6664692 and the like. The designs in which the stator is located between two rotors often have a lower mechanical rigidity in the connection between the Stator and the housing.
  • the third group contains the solutions with one rotor and two stators.
  • Patent specification CA2444759 describes an axial construction with the ratio of the rotor and stator pole number of 8: 6, the stators being rotated relative to one another. As a result, the cogging torque is reduced a little, while the bending loads on the rotor increase. The properties which are determined by the pole number ratio behave in the same way as in the embodiment according to DE 19856647.
  • the patent specification US5751089 describes a two-phase construction with uniformly distributed stator and rotor poles, the number of which is the same. Both stators are offset from each other by half a pole. This construction has a relatively large cogging torque.
  • the same document also describes the solution with an arbitrary even number of phases, the cogging torque being able to be reduced with an increasing number of phases. However, this solution is impractical because four-phase and multi-phase motor controls are not very common.
  • a construction with two stators and a rotor located between the two stators is proposed.
  • the design is radial, axial and linear in relation to the shape and mutual position of the rotor and stators
  • the electromagnetic poles contain magnetically permeable pole cores.
  • Synchronous electromechanical converter further referred to as a motor, can be used as multi-phase motor and generator can be used. It works with electrical multiphase systems in which the phase difference between adjacent pseudophases is 180 ° divided by the number of phases, which also includes the normal three-phase system and the two-phase system with phases offset by 90 °.
  • the electromagnetic part contains two stators 2 and a rotor 1, which is located between the two stators and can move with respect to them.
  • the stators are rigidly connected to the housing or are themselves part of the housing.
  • the rotor contains approximately evenly distributed, alternately oriented magnetic poles 4.
  • the magnetic poles are oriented approximately parallel to the direction which is rectangular with the magnetic gap between the magnetic poles and the individual stator.
  • the stator contains poles 5 directed against the rotor and one or more magnetically permeable parts 6, through which the magnetic flux between adjacent poles closes on the side that does not adjoin the magnetic gap with the rotor.
  • the stator contains the same number of identically arranged electromagnetic poles each of at least two electrical phases, which are arranged in contiguous groups 7 of at least two electromagnetic poles, all of the electromagnetic poles belonging to the individual group belonging to the same electrical phase and the adjacent electromagnetic poles of the same group being electrically offset by 180 ° are.
  • the adjacent electromagnetic poles belonging to different stator groups are electrically offset by 180 ° + sgn (- E) (180 ° / F) n.
  • the number n is preferably equal to one, because in this case the average absolute phase difference between the magnetic phase of the rotor and the electrical phase of the stator can be smallest.
  • the magnetic poles of the rotor can be better used in stators that contain groups with larger numbers of electromagnetic poles. If the stator in the rotary design contains more than one stator group of the individual phase, the overall center of gravity of the positions of electromagnetic poles which belong to the same phase preferably coincides with the rotor axis. For rotary versions the number of rotor poles that border the magnetic gap with an individual stator (M), an even number.
  • FIG. 1 three-phase radial design
  • each stator 18 containing uniformly distributed electromagnetic poles with magnetically permeable pole cores and the rotor 20 magnetic poles contains FIGS. 2A and 2B two examples of the Rotor design Fig. 3 three-phase radial design
  • each stator contains 24 electromagnetic poles with magnetically permeable pole cores, which are distributed in sections at the same distance as the rotor poles, and the rotor contains 26 magnetic poles.
  • 4A to 4F the designs of the stators containing magnetically permeable pole cores.
  • FIGS. 5A and 5B the design of magnetically permeable pole cores from the group of electromagnetic poles, in which the shape of the pole cores changes so that the difference between the magnetic phase of the rotor and 6A to 6E transitions between adjacent stator groups
  • each stator 21 containing uniformly distributed electromagnetic poles without magnetically permeable poles and the 8 contains a three-phase radial design, each stator containing 18 uniformly distributed electromagnetic poles with magnetically permeable pole cores and the rotor containing 16 magnetic poles and the stators being rotated relative to one another by 4 rotor poles.
  • the number of rotor poles adjacent to the magnetic gap with an individual stator (M) is the same for the two stators.
  • Those versions stand out particularly in which the individual rotor pole 4 borders on both magnetic gaps and the rotor, with the exception of the poles, contains no magnetically permeable or electrically conductive parts. In such cases, energy losses in the rotor caused by the changing magnetic fields can be minimal.
  • the magnetic poles can be exploited best because the magnetic voltage required to generate the magnetic flux of the rotor poles is the smallest.
  • the forces on the individual rotor pole that do not contribute to the output torque can best be compensated in such cases.
  • the torque that acts on the individual rotor pole and causes bending stresses in the rotor can be minimal.
  • the rotor in some versions contains a magnetically permeable yoke 11, on which the magnetic poles are fastened from both sides.
  • the mass of the rotor is usually larger than that of a rotor without a yoke, which also results in a larger moment of inertia and a larger heat capacity.
  • Such designs use the magnetic poles somewhat poorly because magnetic flux is closed on one side by the yoke. This and the larger rotor mass result in a slightly smaller specific torque; due to additional energy losses in the yoke, energy losses in the rotor caused by the changing magnetic fields also increase.
  • the magnetic poles of the rotor are preferably distributed such that the positions of the poles on both sides of the yoke match.
  • the rotor movement can be tilted, which results in smaller torque unevenness and more sinusoidal induced voltage in stator windings, but the greater the tilt, the smaller the torque that can be achieved.
  • the cogging torque also decreases in the versions which contain magnetically permeable stator poles.
  • Permanent magnets are preferably used as magnetic poles, with the highest specific torque using magnetic materials based on rare earths can be achieved.
  • Single or multi-pole permanent magnets are used, which preferably have a rectangular shape or are mutually identical segments.
  • the magnets are usually best used when the part they occupy is seventy to eighty-five percent of the circumference of the area adjacent to the magnet gap with an individual stator.
  • the rotor is preferably constructed from magnetic poles 4, which are connected via their sides not adjoining the magnetic gap with stators to the elements 10 made of magnetically non-permeable and electrically non-conductive material, preferably polymers or ceramics.
  • the polymers are preferably reinforced by fillers which improve their mechanical properties and rigidity of the rotor, which contributes to quieter running. Filler can also improve the thermal properties of the rotor and adjust the coefficient of thermal expansion. This is preferably adapted so that the ratio of the two magnetic gap widths is approximately maintained when the temperature changes in the motor.
  • the part of the rotor which contains the magnetic poles is preferably connected to the shaft with the same material or to the parts which are used for connection to the shaft.
  • the rotor is preferably manufactured in such a way that the magnetic poles are distributed accordingly and cast with binding material.
  • the connection to the shaft is also established at the same time.
  • the magnets are usually completely cast in, which protects them from corrosion and mechanical damage and also prevents crumbling. For good heat dissipation, it is important that the layer of binding material on the magnetic pole surfaces that adjoin the magnetic gap enables good heat permeability and good heat transfer.
  • a part of the winding 8 belongs to the electromagnetic pole of the phase to which it belongs.
  • each electromagnetic pole of the stator group has its own turn, which belongs entirely to it, because such turns have the smallest dimensions and the smallest electrical resistance and also enable the highest turn filling factors and the highest heat permeability between the turns and the housing.
  • the winding of the stator group can also be carried out in such a way that the center points of the windings, which belong to the individual electromagnetic pole of the group, only coincide with its position with every second electromagnetic pole.
  • the stator group preferably contains an even number of electromagnetic poles.
  • the winding of the stator group can also be designed as a meander winding, whereby the group preferably contains an even number of electromagnetic poles.
  • the stator poles can be distributed evenly.
  • the layer spacing of adjacent electromagnetic poles of the same stator group is the same as that of the adjacent electromagnetic poles belonging to different stator groups.
  • the discrepancy between the magnetic phase of the rotor and the electrical phase of the stator becomes ever greater on the transitions between the stator groups.
  • the phase difference between the magnetic and electrical phases is different for each electromagnetic pole of the stator group, so the windings of all the electromagnetic poles of individual stator groups are preferably connected in series, thus preventing the equalizing currents between individual electromagnetic poles and achieving a more sinusoidal curve of the induced voltage in windings.
  • An example of such an embodiment is shown in Figure 1.
  • the electromagnetic poles can be distributed in such a way that the layer spacing of adjacent electromagnetic poles which belong to the same stator group 14 is equal to the average layer spacing of the rotor poles and is smaller than the layer spacing of adjacent electromagnetic poles which belong to different stator groups 12, 13.
  • Figure 3 Because of the smallest average absolute phase difference between the magnetic phase of the rotor and the electrical phase of the stator, the highest specific torques can be achieved with such stator designs.
  • stator contains electromagnetic poles with magnetically permeable pole cores
  • such a stator design has a larger cogging torque and a more trapezoidal shape of the induced voltage in the winding than a stator design with uniformly distributed electromagnetic poles. Both can be reduced in part by periodically changing the layer spacing of the rotor poles. The period of change is preferably the same as the number of rotor poles.
  • the electromagnetic poles of individual stator groups can be distributed evenly so that the number of opposing rotor poles is one third of the rotor pole larger than the number of electromagnet poles of the stator group.
  • the layer spacing of neighboring electromagnetic poles, the different stator groups are by (n - 1) / F of the average layer spacing of the rotor poles larger than the layer spacing of neighboring electromagnetic poles belonging to the same stator group.
  • stator has two variants with regard to the magnetic properties of the stator poles.
  • the stator poles contain magnetically permeable pole cores 9.
  • the pole cores are separated from the rotor poles by a magnetic gap which is narrow in comparison with the dimension of the rotor pole in the direction of the rotor movement and is preferably the same for all stator poles.
  • the poles in the vicinity of the magnetic gap widen at least in a direction that is approximately rectangular to the direction of the magnetic field in the magnetic gap, preferably in a direction parallel to the rotor movement. This increases the magnetic flux through the pole, which leads to better utilization of the core material and the current conductors. At the same time, the demagnetizing forces and changing magnetic fields in the rotor poles decrease.
  • the expanded pole consists of a head 16 and a shaft 15, which preferably has parallel sides.
  • the heads of the neighboring poles preferably do not touch.
  • the gap between adjacent heads is preferably larger than the width of the magnetic gap between the pole and the rotor poles.
  • the width of the magnetic gap at the edges of the pole core increases, which reduces the cogging torque and the proportion of the higher harmonic frequencies of the changing magnetic fields in the rotor poles.
  • the greater part of the magnetic flux flows through the pole.
  • Variants that contain magnetically permeable poles are mainly characterized by a higher specific torque, better utilization of the magnetic poles of the rotor, smaller changeable magnetic fields in the windings, better utilization of the current conductors and usually also by higher thermal permeability between the windings and the housing.
  • Magnetically permeable poles preferably have a large magnetic permeability, high saturation induction, small magnetic reversal losses and low electrical conductivity.
  • Polkeme are preferably mutually electrical insulated lamellae made of magnetically permeable sheet or film or of magnetically permeable particles or magnetically permeable ferrite cast in the electrically non-conductive material. If the material of the pole cores has anisotropic magnetic properties, the direction with optimal magnetic properties preferably coincides with the direction of the magnetic field in the core shaft 15.
  • the poles 9 are preferably produced in one piece with an associated part of the magnetically permeable stator yoke 6, but can also be produced as independent elements and attached to the stator yoke. The designs that contain part of the stator yoke usually have higher thermal permeability between the windings and the housing.
  • Figures 4A to 4F illustrate some versions of the stators with magnetically permeable pole cores.
  • the stator is made up of elements which contain the pole core and part of the stator yoke, via which magnetic flux is closed between adjacent pole cores. composed. Electrically insulating gaps 17, which separate neighboring poles from one another, are narrow, so that the magnetic voltage drop is small. With a larger gap area, the magnetic voltage drop at gap 17 is reduced, which is why adjacent elements are preferably separated by oblique gaps, which is shown in Figure 4A.
  • the gaps are preferably filled with an electrically non-conductive, highly heat-permeable binder which electrically insulates the adjacent stator elements, increases the rigidity of the rotor and dampens acoustic vibrations.
  • the individual stator element contains several poles and the part of the stator yoke that connects them. If both electromagnetic poles belong to the same electrical phase in the design in Fig. 4C, the smallest transformer coupling between the windings of different electrical phases is shown.
  • pole cores are produced as independent elements and glued to the stator yoke or with the aid of Pins and grooves attached to the stator yoke. With such designs, it is possible to manufacture the pole turn as an independent part that is placed on the pole core when the stator is assembled.
  • the materials with anisotropic magnetic properties allow for smaller energy losses in magnetically permeable materials Stator.
  • the shape of the poles of individual stator groups can change so that the difference between the magnetic phase of the rotor and the electrical phase of the stator is reduced. This increases the specific torque, but also increases the cogging torque.
  • Electromagnetic poles closer to the transitions between adjacent stator groups typically have asymmetrical pole core heads in such designs, which are also offset by a larger dimension 18 with respect to the core shaft, as shown in Figures 5A and 5B.
  • Neighboring electromagnetic poles belonging to stator groups is larger than that between adjacent electromagnetic poles of the same stator group, can contain poles 19 with magnetically permeable pole cores which do not belong to any electrical phase and are located between the stator groups. This reduces the changes in the magnetic field at the transitions between adjacent stator groups, which can also be achieved by shaping the pole core heads of neighboring electromagnetic poles, which belong to different stator groups, 12, 13 in such a way that the magnetic gap area with the rotor poles at the transitions between neighboring Statorgmppen enlarged. Some examples of the transitions between adjacent stator groups are shown in Figures 6 A to 6E. In the second variant, all stator poles are also electromagnetic poles and do not contain any magnetically permeable parts.
  • the electromagnetic pole can contain a winding carrier 20, which preferably consists of electrically non-conductive material. Magnetic flux of the electromagnetic pole runs predominantly through the pole turn, which is mainly in the magnetic gap between the rotor and the magnetically permeable stator yoke 6. For this reason, the windings are designed in such a way that the eddy current losses are kept small.
  • the second stator variant is mainly characterized by a negligible cogging torque, absence of magnetic reversal velocities in the pole cores, small changeable magnetic fields in the rotor poles and very simple pole manufacture. Due to the better utilization of the magnetic poles of the rotor, higher specific torques can be achieved with a smaller number of stator groups whose electromagnetic poles belong to the same electrical phase (G).
  • stator poles With a larger number of stator poles magnetic flux of the individual electromagnetic pole is smaller, which is why the magnetically permeable stator yoke 6 can have a smaller average.
  • the magnetic poles of the rotor are exposed to smaller demagnetizing forces because the part of the turn that belongs to the individual electromagnetic pole is smaller.
  • the larger the number of stator poles the greater the thermal permeability between the windings and the housing.
  • the number of rotor poles preferably differs only slightly from the number of stator poles, energy losses caused by changing magnetic fields are greater with a larger number of stator poles, which is particularly true of the variants which contain magnetically permeable stator pole cores.
  • the cogging torque is proportional to the quotient between the number of stator groups whose electromagnetic poles belong to the same electrical phase (G) and the number of electromagnetic poles of the stator (E).
  • the stator should therefore preferably contain a large number of electromagnetic poles, which are distributed in a few stator groups.
  • the cogging torque can also be reduced by periodically changing layer spacing of the rotor poles.
  • the cogging torque can also be reduced by an inclination of the stator poles in relation to the rotor poles in the direction of the rotor movement, although this method is impractical for stators which consist of individual poles.
  • the stator preferably consists of the same elements, which contain one or more poles and the part through which magnetic flux closes between adjacent poles. In the case of versions with a higher number of elements, smaller mechanical stresses caused by temperature changes and usually smaller acoustic vibrations occur. The highest winding filling factors and winding densities can be achieved with stators consisting of individual poles, where each pole is wound separately.
  • stator yoke 6 can be interrupted between the stator groups, whereby a smaller transformer coupling is achieved between the turns of individual phases, although this normally reduces the specific torque and increases the cogging torque.
  • the stator or its elements are glued to the housing in an electrically insulating manner or fastened with mechanical fastening elements. Contacts between the stator and the housing preferably have good thermal permeability.
  • the number of stator groups of the individual stator whose electromagnetic poles belong to the same electrical phase, (G), is preferably equal to one or two.
  • the number of poles and the pole distribution are preferably identical in both stators.
  • the electromagnetic poles of both stators are preferably electromagnetically equivalent.
  • the stators are arranged with respect to the magnetic poles of the rotor so that the average phase of the turn of the individual electrical phase is approximately synchronous for both stators.
  • the turn of the individual phase preferably forms one or more partial turns connected in parallel. All of the electromagnetic poles of individual stator groups preferably belong to the same partial turn.
  • individual partial windings preferably contain the same number of electromagnetic poles of both stators, with which the equalizing currents between the partial windings are combated, especially when the electromagnetic poles of both stators are not magnetically equivalent.
  • the stator is designed in a rotary manner with more than one stator group of the individual phase, the entire center of gravity of the pole positions of all the electromagnetic poles which belong to the same partial turn preferably coincides with the rotor shaft. In this way, the bending load on the rotor shaft can be kept small even in the event of the failure of a partial turn or the entire turn of a phase. If both stators have the same number of poles and pole distribution and the positions of the
  • the construction has several variants with respect to mutual displacement of the electromagnetic poles of the first and second stator.
  • the stators are mutually offset in the direction of the rotor movement by at most GI (2E) of the layer spacing of the adjacent rotor poles.
  • Individual partial turns preferably contain the same number of opposing electromagnetic poles of the first and second stator.
  • the stators are not offset from one another, the highest torque can be achieved.
  • the cogging torque can normally be reduced by mutually displacing the stators by GI (2E) of the layer spacing of the adjacent rotor poles and a sinusoidal voltage profile in the windings can be achieved.
  • the stators are mutually offset in the direction of the rotor movement by an integer number of rotor poles, preferably by the integer number of rotor poles closest to the quotient MI (IG). If the stators are offset by an odd number of rotor poles, the polarity of the turns will be reversed by one of the two stators.
  • the highest specific torques can be achieved with these design variants because the demagnetizing forces on the rotor poles are smallest.
  • a smaller amplitude of the variable magnetic field in the rotor poles and a smaller proportion of the higher harmonic frequencies compared to the first variant enable smaller energy losses in the rotor.
  • the bending loads on the rotor and the excitation forces on the rotor poles, which cause the rotor to vibrate are large in comparison with the first variant, as is the phase coupling between the turns. In the case of stators with only one stator group of the individual phase, this variant has a large bending load on the rotor shaft.
  • the number of rotor poles and the number of stator poles are preferably selected so that the opposing electromagnetic poles of the two stators are offset by half the layer spacing of the adjacent stator poles. In this case, the demagnetizing forces and the changing magnetic fields in the magnetic poles are lowest.
  • the cogging torque is the lowest when the stator poles are mutually offset by 1 / (2F) of the average layer spacing of the adjacent rotor poles and the layer spacing of the rotor poles changes periodically by ⁇ 1 / (8F) of the average layer spacing of the neighboring rotor poles.
  • the housing of the motor is preferably made of metal. In doing so Aluminum and magnesium alloys preferred. Channels for liquid or gaseous coolant can be integrated in the motor housing, the channels preferably running parallel to surfaces through which the stators are connected to the housing. When the construction is made radially, the magnetic poles become radial
  • the part of the rotor that contains the magnetic poles is usually ring-shaped and is placed radially between the two stators.
  • the magnetic poles are oriented parallel to the rotor shaft.
  • the part of the rotor that contains the magnetic poles is usually in the form of a disk.
  • the magnetic poles are oriented rectangular to the direction of the rotor movement.
  • the configuration with two stators has a smaller proportion of the magnetic flux which parasitically closes between adjacent electromagnetic poles, compared to those which contain only one stator, which also leads to better utilization of the magnetic poles at higher torques.
  • two-stator In general, two-stator
  • Constructions higher specific torques can be achieved than with one-way.
  • a small difference between the number of rotor poles and the number of stator poles ensures that even with stators with magnetically permeable pole cores, the cogging torque and the torque unevenness can be kept small. Because of this and because of a good balance of the mechanical forces, the construction described runs very smoothly.
  • the individual stator is subjected to less mechanical stress with a two-stator design than with a single-stator design.
  • the bending loads on the rotor and the rotor shaft can be significantly smaller than in constructions with only one stator. Constructions with two stators ensure a significantly better one
  • Thermal permeability between the windings and the housing as constructions with similar capabilities that contain only one stator Due to increased electrical resistance of the stator windings and smaller magnetic energy of the magnetic poles at higher temperatures, an increase in temperature in the motor has a negative effect on the motor capabilities. Thanks to better heat dissipation, the temperature of the motor can be kept lower in the described construction than in the conventional construction with a stator, which leads to lighter and more powerful motors which are still particularly suitable for direct drive of vehicles.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

Transformateur électromécanique synchrone pouvant être utilisé comme moteur et générateur multiphase présentant un couple de rotation élevé spécifique, un couple à l'arrêt, faible ou négligeable, une faible irrégularité de couple, un fonctionnement silencieux et une bonne perméabilité thermique entre les enroulements et la carcasse. Il renferme un rotor à pôles magnétiques uniformément répartis (4) et deux stators (2) à enroulements concentrés (8), d'au moins deux phases électriques. Le stator individuel renferme le même nombre de pôles électromagnétiques (9) également disposés, chacun d'au moins deux phase électriques, qui sont disposés en groupes cohérents d'au moins deux pôles électromagnétiques d'une même phase électrique. Les pôles du stator (9) peuvent renfermer des noyaux polaires à perméabilité magnétique et peuvent être répartis uniformément ou non. Le nombre de pôles électromagnétiques du stator se différencie du nombre de pôles du stator, d'un produit entre le nombre de groupes (7) du stator, dont les pôles électromagnétiques appartiennent à la même phase électrique, et d'un nombre entier naturel qui n'est pas un multiple du nombre de phases électriques. Il est possible d'obtenir une configuration axiale et linéaire du transformateur.
PCT/SI2005/000015 2004-05-25 2005-05-23 Transformateur electromecanique synchrone WO2005117243A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05740427A EP1884013A1 (fr) 2004-05-25 2005-05-23 Transformateur electromecanique synchrone
US11/911,830 US7723888B2 (en) 2004-05-25 2005-05-23 Synchronous electromechanical transformer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SI200400151A SI21830A (sl) 2004-05-25 2004-05-25 Sinhronski elektromehanski pretvornik
SIP-200400151 2004-05-25

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WO2005117243A1 true WO2005117243A1 (fr) 2005-12-08
WO2005117243B1 WO2005117243B1 (fr) 2006-02-02

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Country Status (3)

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EP (1) EP1884013A1 (fr)
SI (1) SI21830A (fr)
WO (1) WO2005117243A1 (fr)

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ITFI20080163A1 (it) * 2008-09-03 2010-03-04 Leonardo Lenzi Macchina elettrica rotante.
ITFI20080167A1 (it) * 2008-09-03 2010-03-04 Leonardo Lenzi Macchina elettrica rotante.
EP2259411A1 (fr) * 2008-03-28 2010-12-08 Toyota Jidosha Kabushiki Kaisha Machine électrique rotative
WO2012138303A2 (fr) 2011-04-05 2012-10-11 ELAPHE, podjetje za razvoj in prodajo električnih vozil ter ener iskih virov d.o.o. Enroulement ondulé multiphasé compact d'une machine électrique à couple spécifique élevé
US8288916B2 (en) * 2007-09-13 2012-10-16 Eric Stephane Quere Composite electromechanical machines with uniform magnets
US8400044B2 (en) 2006-10-10 2013-03-19 Force Engineering Limited Electromotive machines
WO2013127436A1 (fr) * 2012-02-28 2013-09-06 Siemens Aktiengesellschaft Moteur electrique
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EP2728713A1 (fr) * 2012-10-31 2014-05-07 Openhydro IP Limited Machine électrique
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US8288916B2 (en) * 2007-09-13 2012-10-16 Eric Stephane Quere Composite electromechanical machines with uniform magnets
EP2259411A4 (fr) * 2008-03-28 2013-04-03 Toyota Motor Co Ltd Machine électrique rotative
EP2259411A1 (fr) * 2008-03-28 2010-12-08 Toyota Jidosha Kabushiki Kaisha Machine électrique rotative
US8536758B2 (en) 2008-09-03 2013-09-17 Renzo Lisi Electric rotary machine
ITFI20080163A1 (it) * 2008-09-03 2010-03-04 Leonardo Lenzi Macchina elettrica rotante.
WO2010026612A1 (fr) * 2008-09-03 2010-03-11 Renzo Lisi Machine rotative électrique
ITFI20080167A1 (it) * 2008-09-03 2010-03-04 Leonardo Lenzi Macchina elettrica rotante.
WO2012138303A2 (fr) 2011-04-05 2012-10-11 ELAPHE, podjetje za razvoj in prodajo električnih vozil ter ener iskih virov d.o.o. Enroulement ondulé multiphasé compact d'une machine électrique à couple spécifique élevé
CN104137400A (zh) * 2012-02-28 2014-11-05 西门子公司 电机
WO2013127435A1 (fr) * 2012-02-28 2013-09-06 Siemens Aktiengesellschaft Moteur électrique
WO2013127436A1 (fr) * 2012-02-28 2013-09-06 Siemens Aktiengesellschaft Moteur electrique
JP2015510751A (ja) * 2012-02-28 2015-04-09 シーメンス アクチエンゲゼルシヤフトＳｉｅｍｅｎｓ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ 電動機
US9806588B2 (en) 2012-02-28 2017-10-31 Siemens Aktiengesellschaft Electric motor
EP2728713A1 (fr) * 2012-10-31 2014-05-07 Openhydro IP Limited Machine électrique
WO2014067920A1 (fr) * 2012-10-31 2014-05-08 Openhydro Ip Limited Machine électrique
US9595857B2 (en) 2012-10-31 2017-03-14 Openhydro Ip Limited Electrical machine
AU2013341043B2 (en) * 2012-10-31 2017-08-31 Openhydro Ip Limited An electrical machine
WO2023174856A1 (fr) 2022-03-15 2023-09-21 Elaphe Propulsion Technologies, Ltd. Enroulement pour une machine électrique, machine électrique et procédé de fabrication
WO2023227464A1 (fr) 2022-05-24 2023-11-30 Roland Kasper Enroulement, machine électrique et procédé de fabrication
DE102022113127A1 (de) 2022-05-24 2023-11-30 Roland KASPER Wicklung, elektrische Maschine und Herstellungsverfahren

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