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WO2022263871A1 - Moteur électrique synchrone à résonance par induction - Google Patents

Moteur électrique synchrone à résonance par induction Download PDF

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Publication number
WO2022263871A1
WO2022263871A1 PCT/HR2021/000007 HR2021000007W WO2022263871A1 WO 2022263871 A1 WO2022263871 A1 WO 2022263871A1 HR 2021000007 W HR2021000007 W HR 2021000007W WO 2022263871 A1 WO2022263871 A1 WO 2022263871A1
Authority
WO
WIPO (PCT)
Prior art keywords
pos
rotor
windings
stator
electric motor
Prior art date
Application number
PCT/HR2021/000007
Other languages
English (en)
Inventor
Stjepan KRIŽANČIĆ
Original Assignee
Krizancic Stjepan
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 Krizancic Stjepan filed Critical Krizancic Stjepan
Priority to PCT/HR2021/000007 priority Critical patent/WO2022263871A1/fr
Publication of WO2022263871A1 publication Critical patent/WO2022263871A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/26—Asynchronous induction motors having rotors or stators designed to permit synchronous operation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/30—Structural association of asynchronous induction motors with auxiliary electric devices influencing the characteristics of the motor or controlling the motor, e.g. with impedances or switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the present invention relates to the technical field which is, according to the IPC, International Patent Classification, indicated as H02K.
  • the technical problem traditionally known both in the field of induction and in the field of synchronous electric motors, includes the fact that the conversion of electrical into mechanical energy as well as vice versa, results in minor losses in electrical conductors, and also, but to the much higher extent in the electric motor magnetic circuit, stator and rotor, where traditional and generally known hysteresis losses as well as eddy current losses occur, and convert into heat, which in addition to the energy loss in the conversion process also results in an unwanted and unavoidable electric motor heating.
  • electrical machines are electromechanical devices for energy conversion, which are divided according to the direction of the energy conversion into two basic groups: generators and electric motors, where generators are the machines which convert mechanical into electrical energy, while electric motors convert electrical into mechanical energy, whereat the conversion itself is being carried out by means of magnetic field within the stator and rotor.
  • generators are the machines which convert mechanical into electrical energy
  • electric motors convert electrical into mechanical energy, whereat the conversion itself is being carried out by means of magnetic field within the stator and rotor.
  • electrical into mechanical and mechanical into electrical which means, if we supply a machine with a mechanical energy by means of a shaft, it will work as a generator, and if we supply a machine with electrical energy and if we use mechanical energy on the shaft, it will work as a motor.
  • Energy conversion by means of electric machines is carried out in the manner that the delivered energy, W out is always smaller than the received one W m , whereat the difference as occurred, the loss, is consumed within themselves, converted into heat (heating energy), so that regular efforts to achieve that this part be relatively as smaller as possible, and that the degree of action h is as near as possible to 1, respectively, and which is regularly, due to the imminent occurrence of loss in the conversion, always h ⁇ 1 .
  • FIG. 1 The representation of the example of basic mechanical parts of a classical asynchronous cage motor in Fig. 1 shows that the stator (1.1 ) consists of an iron core with a winding, and that it is located in a casing for mechanical fixation.
  • the rotor (1.2) also consists of an iron core and a winding and it is located on a shaft.
  • the connection between the stator casing and the machine rotating parts is created by means of bearings which are located in the bearing shields.
  • the space between the stator and the rotor is an air gap.
  • the windings of the electric motor are used for:
  • the cores of the rotor and stator of the classical electric motors except from mechanically holding the windings, their basic task is to conduct the magnetic flux. Therefore, they are made of ferromagnetic materials, having a good magnetic conductivity, and therefore hysteresis and eddy current losses as smaller as possible, as well as the necessary mechanical firmness to be able to deliver (motors) or receive (generators) the mechanical energy by means of a shaft.
  • the basic feature of the existing electric motors, induction and asynchronous ones, respectively, as well as synchronous motors, is that they are used as converters of electrical into mechanical energy and that they have a series of equivalent assemblies and parts whereby the conversion is carried out on the basis of the same electromagnetic laws along with several joint defects and deficiencies, among which a share in the losses occurring in the ferromagnetics during conversion is standing out.
  • Both the induction and synchronous motors have a rotating part, a rotor, on which the electrical energy is transmitted from the stator (to the rotor) by means of the rotary magnetic field, which is created by passing of a three-phase current through three-phase windings located on the stator and connected to the associated three-phase voltage source.
  • the created rotary magnetic field induces in rotor conductors the voltages and currents that create their rotary magnetic field. Interaction between those two magnetic fields, the stator and rotor ones, create electromagnetic forces and torques, the result of which is the rotor rotation.
  • the motors are divided into cage motors and slip ring motors, where the slide rings with the associated brushes, are located on the shaft, by means of which the rotor winding is supplied by a power.
  • Figure 2 shows the basic cross-section of the magnetic circuit of a cage asynchronous motor
  • Figure 3 shows a representation of an iron core of a 2-pole synchronous motor with cylindrical rotors
  • Figure 4 shows a representation of an iron core of 6-pole synchronous motor with salient poles.
  • a representation of the rotor, 5.1 and the cage of an asynchronous motor is shown in Fig. 5.
  • the starting point of the technical solution relating to the induction resonant synchronous electric motor according to the present invention is the performance of the magnetic circuit according to which the stator of an induction resonant synchronous motor is carried out with at least one pair of the stator windings, SN, Fig.
  • a part of the stator winding 7.1-1 is located on the stator salient pole SIP1 , Pos. 6.1 , and other parts of the stator windings are located in the same manner so that a part of the stator winding 7.1-2 is located on the stator salient pole SIP3, Pos. 6.3, a part of the stator winding 7.2-1 is located on the stator salient pole SIP2, Pos. 6.2, and a part of the stator winding 7.2-2 is located on the stator salient pole SIP4, Pos. 6.4.
  • the salient stator poles for example according to representation shown in Fig. 6, are four salient stator poles, Pos. 6.1 , Pos 6.2, Pos 6.3, and Pos 6.4, which form part of the inner surface area of the stator part of the motor, where, also the rotor of the induction resonant synchronous electric motor is carried out with a certain number of the rotor salient poles, such as shown also in Fig.6, six salient rotor poles, Pos.6.5., Pos.6.6, Pos.6.7, Pos.6.8, Pos.6.9, Pos.6.10, which thus in the same manner form part of the outer surface of the rotor part of a motor.
  • stator winding 7.1 with the associated part 7.1.1 is located on the stator salient pole SIP1 , Pos. 6.1, whereas its other part 7.1.2 is located on the stator salient pole SIP3, Pos. 6.3, where the centerline of the stator 6.11 and rotor 6.12 salient poles in the stationary state are coinciding, which shall also apply to identical arrangement in the case of the stator winding 7.2, being clear from all of this, that the stator windings 7.1 and 7.2 are located at an angle of 90° four stator salient poles.
  • Fig. 6 shows individual associated centerline of each of the stator salient poles SIP, Pos. 6.11, marked with SSIP, Pos 6.11 , whereas the centerline of each of the rotor salient poles, RIP, are marked with SRIP, Pos. 6.12.
  • Fig. 6 in combination with Fig. 7, the associated numbers of positions, relating to the parts are used as follows:
  • the rotor winding Pos. 7.3 is located on the rotor salient pole: RIP1 , Pos. 6.5;
  • the rotor winding Pos. 7.4, is located on the rotor salient pole: RIP2, Pos. 6.6;
  • the rotor winding Pos. 7.5 is located on the rotor salient pole: RIP3, Pos. 6.7;
  • the rotor winding Pos. 7.6, is located on the rotor salient pole: RIP4, Pos. 6.8;
  • the rotor winding Pos. 7.7 is located on the rotor salient pole: RIP5, Pos. 6.9;
  • the rotor winding Pos. 7.8, is located on the rotor salient pole: RIP6, Pos. 6.10.
  • connection with the endeavor to be interconnected in the manner to achieve the same directions of their magnetomotive forces marked with Q (AZ), Pos. 8.1 and therewith of the magnetic fluxes (F), Pos. 8.2, the same also applying to their magnetic inductions B (T), whereat it is understood that the mark according to Pos. 8.3 refers to the north N magnetic pole whereas the mark according to Pos. 8.4, refers to the south magnetic pole S.
  • the total stator winding, SN consists of one or more windings, where each of them has a specific number of windings whereas those windings may be interconnected in series or parallelly, as well as in one of those combinations, whereas each of those windings is individually formed and located on the associated stator pole.
  • Fig. 9 shows the case where two stator windings are connected in series Pos. 7.1 and Pos. 7.2.
  • Fig. 9 illustrates a connection in series of partial stator windings, but their parallel connection is also possible, where the voltage source U1 Pos. 9.1 of their connection in combination with source U2, Pos. 9.4 is also marked.
  • the rotor windings individually winded and located on the associated rotor salient poles, are connected in series such as shown in Fig. 10, and that in the way that the directions of action of magnetomotive fluxes Q (AZ), Pos. 8.1 , and with that the magnetic fluxes F, Pos.
  • each of the individual rotor windings be in opposite to those which are in two neighboring rotor windings, and which are usually established by the induction of the alternating magnetic flux, which produces, in an individual time sequence, a flow of current through the rotor windings of the electric current in the associated stator windings, whereas a block capacitor C, Fig. 10, is being connected to the rotor windings connected in series, so that the summary induction resistance X L , Pos. 11.1.1 and the summary capacitive resistance, X c Pos. 11.2.1 make an oscillating circuit and in the case of the identical amounts X L and X c or close to that state, where the amounts X L and X c are not identical, but their amounts differ to a certain extent, the emergence of resonance is possible.
  • a block capacitor, C, Pos. 10.1 , and Pos. 11.2, respectively, is connected inn series into the rotor electric circuit together with the inductivity of the rotor windings and is appropriately located on the rotor of the electric motor, and it may be carried out also with several parallely connected block capacitors.
  • the voltage source of the frequency Pos. 14.1 or impulse 15.1 power supply using the associated schemes for connecting the components indicated in the associated Figures, Fig. 14 or Fig. 15, enable a power supply of the stator windings Pos. 7.1 as well as Pos. 7.2.
  • Figure 3 Representation of the Stator and Rotor Cross-Sections of a 2 - Pole Synchronous Motor with Cylindrical Rotor
  • Figure 6 Representation of a Magnetic Circuit with Salient Poles, Stator and Rotor, Induction, Resonant, Synchronous Electric motor
  • FIG. 7 Representation of the Stator and Rotor Windings Induction, Resonant, Synchronous Motor
  • FIG. 8 Representation of the Correlation of Directions of Action of Magnetomotive Force (Q) and Magnetic Flux (F) with an Example of a Winding with a Certain Number of Windings
  • Figure 11 Representation of the Electrical Components of the Rotor Circuit of the Induction, Resonant, Synchronous Electric motor Pos.11.1 Inductivity, L;
  • Pos. 12.1 Shape and arrangement of the magnetic flux in the motor magnetic circuit under the action of the stator winding 7.1-1 + 7.1-2, and 7.1 , respectively;
  • FIG. 14 Illustration of the Power Supply of the Stator Windings in the Case of the Frequency Semi-Wave Corrected Source
  • FIG. 15 Illustration of the Power Supply of the Stator Windings by the Impulse Source of Power Supply
  • FIG. 17 Representation of the Voltage Semi-Waves from the Frequent Power Supply Source
  • FIG. 18 Representation of the Voltage Semi-Waves from the Impulse Power Supply Source 6. Description of the Manner for Carrying Out the Invention
  • Carrying out the technical solution according to the present invention, or the induction synchronous electric motors, respectively, is to be achieved by the use of generally known materials and the application of classical technological metal processing processes as well as by achieving the required processing precision.
  • the present invention achieves a completely new technical design of the rotor with six windings which are in series with the capacitor, whereat permanent magnets for functioning are not necessary, as well as without slide rings and brushes, whereas the stator of the concerned motor is carried out as the stator in the bipolar stepping motor, as well as with two windings at an angle of 90 degrees and four poles.
  • the technical solution according to the present invention contains two stator windings whereat each of the two of them consists of two parts which are located on four stator salient poles, that conditions that at a single voltage impulse at one of the stator windings rotates the rotor for 30°, after which the second equal impulse follows, by the action of which a turn of further 30° occurs, that is for 60° in total.
  • the speed of the rotor rotation depends on the alternating current frequency or the impulse frequency in the sources to which the electric motor is connected, so that at 50 Hz, 3000 impulses per minute are generated, resulting, in the case of 6 salient poles, in 500 revolutions of the rotor per minute. 7.
  • the present invention finds its industrial application in the field of production of electric motors and their use within the framework of all the branches of industry.
  • a further advantage of the technical solution according to the invention is that the application of the invention is also possible to all the sizes of electric motors.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Synchronous Machinery (AREA)

Abstract

La solution technique du moteur électrique synchrone à résonance par induction est caractérisée par les performances du circuit magnétique de stator par un nombre spécifique des pôles saillants de stator (SIP) de la manière par laquelle ils font partie de la zone de surface intérieure de la partie de stator du moteur, au niveau duquel le rotor est également effectué par un nombre spécifique de pôles saillants de rotor (RIP) qui se forment de manière à faire partie de la zone de surface extérieure de la partie de rotor du moteur. L'enroulement statorique total (SW) est constitué de deux enroulements formés et disposés individuellement (7.1 et 7.2), entre lesquels il n'y a pas de connexion galvanique, et qui ne sont pas reliés l'un à l'autre, chacun des deux enroulements étant constitué de deux enroulements formés et disposés individuellement, de sorte que l'enroulement (7.1) soit constitué de deux parties (7.1-1 et 7.1-2), et que l'enroulement (7.2) soit constitué de deux parties : (7.2-1 et 7.2-2), qui sont également reliées en série. Des enroulements statoriques individuels (7.1-1 et 7.1-2), en tant que parties de l'enroulement statorique (7.1), sont enroulés et mutuellement reliés dans l'unité individuelle associée de telle sorte que tous les enroulements soient enroulés individuellement et reliés de manière à ce que les directions d'action de leurs forces magnétomotrices, Θ, (AZ), Pos. 8.1. ou Pos. 8.2. soient mutuellement harmonisées de sorte que la somme de leurs forces magnétomotrices individuelles Θ, (AZ) Pos. 8.1, soit maximale de manière cumulative, qui est de manière identique faite également par rapport aux enroulements statoriques individuels (7.2-1 et 7.2-2) en tant que parties de l'enroulement statorique (7.2). Des enroulements rotoriques sont enroulés individuellement et situés sur les pôles saillants de rotor associés, et sont mutuellement et avec le condensateur en bloc reliés en série de la manière représentée sur la figure 10, ce qui signifie que les directions d'action des forces mégatomotrices, Θ, (AZ), Pos. 8.1. ainsi que Pos. 8.2. de chacun des enroulements rotoriques individuels, qui sont établis par l'induction de flux magnétique, qui, dans la même séquence temporelle, produisent le flux de courant électrique dans un enroulement statorique individuel, dans la direction inverse de ceux qui sont établis dans les deux enroulements rotoriques voisins et enroulements rotoriques, reliés l'un à l'autre en série et également reliés au condensateur en bloc C (Fig. 10), de telle sorte que la résistance à induction de synthèse XL, Pos. 11.1.1 et la résistance capacitive de synthèse, Xc Pos. 11.2.1 constituent un circuit oscillant et que dans le cas des quantités identiques XL et Xc, ou à proximité de cet état (condition) où les quantités XL et Xc ne sont pas identiques mais où leurs quantités diffèrent dans une certaine mesure, l'occurrence de la résonance soit possible.
PCT/HR2021/000007 2021-06-18 2021-06-18 Moteur électrique synchrone à résonance par induction WO2022263871A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/HR2021/000007 WO2022263871A1 (fr) 2021-06-18 2021-06-18 Moteur électrique synchrone à résonance par induction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/HR2021/000007 WO2022263871A1 (fr) 2021-06-18 2021-06-18 Moteur électrique synchrone à résonance par induction

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1153172A (fr) * 1955-05-04 1958-03-03 Machine électrique à auto-excitation par circuit oscillant
EP0529873A2 (fr) * 1991-08-28 1993-03-03 Satake Corporation Moteur synchrone à induction sans balai avec deux stators
US6639338B1 (en) * 2000-09-06 2003-10-28 Lambert Haner Controlled reluctance AC induction motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1153172A (fr) * 1955-05-04 1958-03-03 Machine électrique à auto-excitation par circuit oscillant
EP0529873A2 (fr) * 1991-08-28 1993-03-03 Satake Corporation Moteur synchrone à induction sans balai avec deux stators
US6639338B1 (en) * 2000-09-06 2003-10-28 Lambert Haner Controlled reluctance AC induction motor

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