WO2018153455A1 - Moteur électrique comportant un rotor à cage d'écureuil et une unité de séparation pour l'ouverture du rotor à cage d'écureuil - Google Patents

Moteur électrique comportant un rotor à cage d'écureuil et une unité de séparation pour l'ouverture du rotor à cage d'écureuil Download PDF

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Publication number
WO2018153455A1
WO2018153455A1 PCT/EP2017/054182 EP2017054182W WO2018153455A1 WO 2018153455 A1 WO2018153455 A1 WO 2018153455A1 EP 2017054182 W EP2017054182 W EP 2017054182W WO 2018153455 A1 WO2018153455 A1 WO 2018153455A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
short
electric machine
separating element
squirrel
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.)
Ceased
Application number
PCT/EP2017/054182
Other languages
German (de)
English (en)
Inventor
Ralf Fischer
Markus Reinhard
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to PCT/EP2017/054182 priority Critical patent/WO2018153455A1/fr
Publication of WO2018153455A1 publication Critical patent/WO2018153455A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H02K21/46—Motors having additional short-circuited winding for starting as an asynchronous motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/35—Devices for recording or transmitting machine parameters, e.g. memory chips or radio transmitters for diagnosis
    • 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
    • H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
    • H02K17/20—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors having deep-bar rotors
    • 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
    • H02K19/00—Synchronous motors or generators
    • H02K19/02—Synchronous motors
    • H02K19/14—Synchronous motors having additional short-circuited windings for starting as asynchronous motors
    • 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
    • H02K2213/09—Machines characterised by the presence of elements which are subject to variation, e.g. adjustable bearings, reconfigurable windings, variable pitch ventilators

Definitions

  • the invention relates to a rotor for an electrical machine ⁇ Ma having a first rotor part, the means for entering into an electromagnetic operative connection, and in a second rotor part, which is designed as a squirrel-cage rotor.
  • the invention also relates to an electric Maschi ⁇ ne with said rotor.
  • electrical machines which are formed as a hybrid form of asynchronous machine and synchronous ⁇ machine, in particular permanent magnet synchronous machine ⁇ .
  • an electrical machine Ma a rotor having a first rotor part to operate as a synchronous machine and a second rotor part for loading ⁇ operating as an asynchronous machine on.
  • the electric ⁇ machine is operated in a continuous operation as a synchronous machine.
  • a second rotor part designed as a squirrel-cage rotor is designed to start the electric machine in a start-up mode.
  • the prior art has the disadvantage that losses occur in a Be ⁇ drive the electric machine by means of the first rotor part by induction of currents in the second rotor part.
  • a rotor for an electrical machine comprising a first rotor member and a second rotor part, which is designed as a short circuit rotor with a ⁇ conductor arrangement.
  • the first rotor part comprises means for entering into an electrochemical ⁇ magnetic operative connection with a stator magnetic field, in particular the electrical machine.
  • the second rotor part in particular the conductor arrangement, is designed to enter into an electromagnetic operative connection with the stator magnetic field when the rotor is in a suitable installation position in the electric machine.
  • the first rotor part and the second rotor part are designed to enter the respective Wirkver ⁇ bond with the stator magnetic field in different Be ⁇ drive modes of the electric machine when the rotor is in the intended installation position in the electric machine.
  • the electromagnetic operative connection of the first rotor part and the second rotor part differ from each other.
  • the means of the f th ⁇ runner part may comprise permanent magnets and / or a Erre ⁇ gerspule.
  • the first rotor part is designed in the manner of a rotor for a synchronous machine.
  • the second rotor part is designed in the manner of a rotor for an asynchronous machine.
  • the invention provides that the second rotor part has a switchable separating ⁇ element for short-circuiting and opening of the circuit arrangement of the squirrel-cage rotor.
  • the Trennele ⁇ ment is dependent on an operating state of the electric machine controlled.
  • the second rotor part can be operated as a squirrel cage.
  • the function of the second rotor part can be interrupted as Kurz practitionerläu ⁇ fer.
  • no electromagnetic active connection of the second rotor part with the stator magnetic field is possible.
  • the separating element comprises at least one semiconductor switch.
  • the separating element comprises one or more transistors, preferably field-effect transistors, as semiconductor switches.
  • the at least one semiconductor switch is part of the conductor arrangement. In a conductive state of the semiconductor switch, the conductor arrangement may be short-circuited. In a non-conductive state of the semiconductor switch, the Lei ⁇ teranowski may be open.
  • the at least one semiconductor switch is a self-conducting semiconductor switch, in particular a normally-on transistor, preferably a self-conducting silicon carbide (SiC) transistor. In this case, in a start-up operation of the rotor, if it is installed as intended in an electrical machine, the conductor arrangement may be short-circuited.
  • the conductor arrangement forms a squirrel-cage rotor which has short-circuit bars and short-circuit rings.
  • the squirrel cage is a particularly advantageous and simple embodiment of the squirrel cage rotor.
  • the shorting bars may be arranged radially about an axis of rotation of the rotor.
  • the shorting rings can contact the shorting bars in the circumferential direction about the axis of rotation of the rotor.
  • the separating element is designed to short-circuit or open an electrical connection between at least one of the short-circuiting rings and the short-circuiting bars.
  • the separating element is arranged between the short-circuiting bars and the at least one of the short-circuiting bars. ge arranged.
  • each of the short-circuit rods ⁇ comprises a semiconductor switch as a separator.
  • the separating element comprises an actuator which is designed to move at least one of the short-circuiting rings relative to the short-circuiting bars.
  • the actuator is designed to move the at least one of the short-circuit rings for opening the conductor arrangement away from the conductor bars.
  • the actuator is configured to move the at least one of the shorting rings for shorting the conductor arrangement to the shorting bars.
  • the at least one of the short-circuit rings touching each of the shorting bars in the short ⁇ closed state of the circuit arrangement, whereby in particular an electrical contact between the short-circuit rods and the at least one of the short-circuit rings is given.
  • the at least one of the shorting rings in the open state of the conductor arrangement is spaced from the shorting bars.
  • the conductor arrangement can be particularly easily short-closed ⁇ sen and opened.
  • the actuator comprises a piezoelectric element.
  • the piezo element may be adapted to be ⁇ minimum to move one of the short-circuit rings by changing an off ⁇ expansion of the piezoelectric element relative to the short-circuit rods.
  • the expansion of the piezoelectric element may be dependent on a voltage applied to the piezoelectric element.
  • the voltage to the piezoelectric element by applying the voltage to the piezoelectric element, the position of the at least one of the shorting rings relative to the shorting bars can be adjusted.
  • are short-circuit voltages appearing in the circuit arrangement in the range of less than 2 V, 5 V, 10 V or 20 V.
  • the rotor has an integrated control inputs, which is designed to switch the separating element from ⁇ dependent on a switching signal.
  • the control unit is adapted to the circuit arrangement by the separating element in the short-circuited state to scarf ⁇ th, when the switching signal assumes a first value.
  • the control unit is designed to switch the Porteran ⁇ order by the separating element in the open state when the switching signal assumes a second value.
  • the rotor has a receiving coil, which is designed to receive a received signal from an external transmitting unit.
  • the received signal is the switching signal.
  • the receiver coil is to be ⁇ forms to receive the reception signal from the external transmitter unit and, preferably forward as the switching signal to the control unit.
  • the receiving coil it may be possible to switch the separating element externally.
  • the received signal can be modulated by the external Sendeein ⁇ integrated on the stator magnetic field or a magnetic field causing the stator current flow.
  • the receiving coil can be designed to receive the received signal via the stator magnetic field when the rotor is in the intended installation position in the electric machine.
  • the receiving coil is given a particularly simple and low-wear way to receive the received signal from the external transmitting unit.
  • no grinding rings are required for the cable-supported transmission of the received signal.
  • the rotor has an induction coil, which is designed to supply the separating element and / or a further component of the rotor with electrical energy.
  • the further component of the rotor is the control unit.
  • the induction coil is designed to generate an electric current and / or an electric power from the stator magnetic field when the rotor i is in the intended installation position in the electric machine. Through the induction coil, a contact ⁇ loose supply of the separating element and / or the other Bau ⁇ part is made possible with electrical energy. In particular, no slip rings for transmitting electrical energy to the rotor are necessary.
  • a second aspect of the invention relates to an electric machine having a stator comprising a coil arrangement and a rotor of the above-mentioned type.
  • the coil arrangement is preferably designed to generate the stator magnetic field.
  • the means of the first rotor part of the rotor in an electromagnetic operative connection with the stator magnetic field.
  • the conductor arrangement of the second rotor part is in an electromagnetic Wirkver bond with the stator magnetic field.
  • the Lei ⁇ teran angel is controllable depending on the respective operating state of the electric machine.
  • the conductor arrangement is opened by the switchable separator.
  • the conductor arrangement is switched in the second operating mode of the electric machine by the separating element in the shorted ⁇ closed state.
  • the conductor arrangement is sheal ⁇ tet in the first operation mode of the electric machine by the partition member in the open state.
  • the rotor of the electric machine may comprise the receiving coil, which is designed to receive the received signal from the external control unit. The received signal preferably characterizes the operating state of the electrical machine.
  • the rotor comprises a sensor coil for detecting a sensor signal, wherein the sensor signal characterizes the operating state of the electrical machine.
  • the rotor in this case has the control unit, which is formed from ⁇ , the separating element in dependence on the
  • the sensor signal corresponds to the switching signal.
  • an evaluation unit is designed to form the switching signal from the sensor signal.
  • the sensor coil is designed to determine the sensor signal as a function of the operating state of the electrical machine.
  • the sensor coil is designed such that in the second operating mode of the electric machine, a voltage is induced in the sensor coil and / or in the first operating mode of the electric machine no voltage is induced in the sensor coil. This allows detection of the first and / or second operating mode.
  • the sensor coil may be placed over an electrical pole pitch on the rotor.
  • the sensor coil and / or the evaluation unit are configured to control the separating element by means of the control unit such that the conductor arrangement is opened precisely when the first operating mode of the electrical machine is detected or no voltage is induced in the sensor coil.
  • the sensor coil is such forms ⁇ out that in the first operating mode of the electrical machine, a voltage is induced in the sensor coil.
  • the sensor coil can in this examples be designed such that just then a voltage is induced in the sensor coil when a voltage in the squirrel-cage rotor, in particular the conductor arrangement is induced.
  • the sensor coil can be arranged via a slot pitch on the rotor.
  • control unit ⁇ is formed in this case to drive the release element in response to a plurality of sensor signal of the plurality of sensor coils.
  • evaluation unit is designed to form the switching signal from the plurality of sensor signal in the case ⁇ sem.
  • a development provides that the rotor in the first operating state of the electric machine by means of the first rotor part in a synchronous operation is operable and the rotor in the second operating state of the electric machine by means of the second rotor part in an asynchronous operation is operable.
  • the first operating state to a synchronous operation state of the elekt ⁇ step machine, preferably in the manner of a synchronous machine.
  • in the second Radiozu ⁇ was an asynchronous operating condition of the electrical machine, preferably in the manner of an asynchronous machine.
  • the synchronous operation can be detected in particular via the sensor coil via the electrical pole pitch.
  • the asynchronous operation can be detected in particular via the sensor coil via the electrical slot division. Show it:
  • 1 shows a schematic sectional view through an electric ⁇ machine with a rotor
  • 2 shows a schematic sectional view through the rotor
  • FIG. 3 shows a schematic perspective view and a
  • the electric machine 1 shows an electric machine 1 in a schemati ⁇ rule sectional view.
  • the electric machine 1 has a rotor 2 and a stator 3.
  • the stator 3 includes a coil assembly 30 for providing a stator magnetic field.
  • the stator magnetic field is provided in a loading ⁇ operation of the electric machine 1 by an electric current flow in the coil assembly 30.
  • the Ro ⁇ gate 2 is mounted on a shaft 19 rotatably herein.
  • the rotor 2 in a determination ⁇ proper installation position in the electrical machine 1.
  • the electrical machine 1 is, for example, a three-phase machine.
  • the electrical Ma machine 1 is configured as a so-called PM line-start motor, that is a synchronous machine with permanent magnets comprising a squirrel-cage asynchronous tarnishing.
  • the rotor 2 shows the rotor 2 in sections in an extremely schematic sectional view.
  • the rotor 2 comprises a first rotor part 10 and a second rotor part 11.
  • the first rotor ⁇ part 10 is present in an extremely schematic and includes means 18 for entering into an electromagnetic operative connection with the stator magnetic field.
  • the means 18 of the first rotor part 10 may for example comprise a permanent magnet ⁇ and / or an excitation coil.
  • the electric machine 1 can be operated as a synchronous machine in a first operating mode. In the first operating mode, the rotor 2 in particular rotates synchronously, the means with the same angular frequency, as the stator magnet ⁇ field.
  • the second rotor part 11 is designed as a short-circuit rotor 17 with a conductor arrangement 15.
  • the conductor arrangement 15 is in the present case designed as a squirrel-cage rotor and includes a short-circuit ring 12 and ⁇ a shorting bar 13.
  • the short-circuit ring 12 is disposed ⁇ present annularly around shaft 19th
  • a operating the electric machine 1 in the manner of a Asynchronma ⁇ machine allows.
  • the electric machine 1 can be operated as an asynchronous machine in a second operating mode.
  • the rotor 2 rotates in particular asynchronous, that means with different angular frequency, such as the stator magnetic field.
  • the circuit frequency of the stator magnetic field during operation of the electric machine 1 as a motor is greater than the angular frequency with which the rotor 2 rotates.
  • the second operating mode is the electrical
  • Engine 1 is adapted to the electric machine 1 to star ⁇ th.
  • the first Be ⁇ operating mode of the electrical machine 1 is adapted to operate the electrical machine 1 permanently.
  • the first operating mode is preferably a continuous operating mode in which the electric machine 1 is operated in its normal mode.
  • the electric ⁇ cal machine 1 is operated only for starting in the second operating mode and operated after completion of the starting operation in the first operating mode.
  • the electrical machine 1 is in the first loading ⁇ operating mode, so 11 losses can occur due to induced harmonics to the second rotor part. In particular, currents can be induced in the conductor arrangement 15. To reduce the losses, the circuit arrangement 15 vorlie ⁇ quietly for a separator. 4
  • the separating element 4 is formed to short circuit the conductor assembly 15 and open. In the present case, the separating element 4 is designed to short-circuit and open an electrical connection between the short-circuiting rod 13 and the short-circuiting ring 12.
  • the partition member 4 is formed to separate and to contact the short-circuit ⁇ rod 13 and the short-circuit ring 12th In a short-circuited state of the conductor arrangement 15, the short-circuiting rod 13 and the short-circuiting ring 12 are in particular electrically contacted. In the open state of the circuit assembly 15 of shorting bar 13 and the short-circuit ring 12 ⁇ particular electrically isolated.
  • the separator 4 may be configured to transfer the conductor assembly 15 between the open state and the closed state.
  • the separating element 4 is preferably controllable depending on the operating state of the electric machine 1.
  • the separating element 4 may include an actuator 40, in particular a piezoelectric element.
  • the actuator 40 is designed to perform a relative movement 45 of the shorting ring 12 relative to the shorting bar 13.
  • the actuator 40 is controllable by a control voltage.
  • a relative position of the shorting ring 12 relative to the shorting bar 13 can be adjustable by an extension of the actuator 40.
  • the extent of the actuator 40 is preferably controllable by the control voltage.
  • the relative movement 45 of the short-circuit ring 12 can be adjusted relative to the short-circuiting bar 13.
  • the short-circuit ring 12 may for example consist of a ring of conductive material, in particular metal, vorzugswei ⁇ se copper and / or aluminum, which is placed on a carrier disk, for example made of plastic or ceramic, ⁇ .
  • the short-circuit ring 12 and / or the carrier disk is supported axially movably, in particular along the shaft 19.
  • the actuator 40 in particular allows the opening Bezie ⁇ hung as separation of the parts, especially the short-circuit ⁇ stabs 13 and the short-circuit ring 12, the cage rotor. 2 shows the conductor arrangement 15 in the open state.
  • the short-circuit ring 12 and the short-circuit rod 13 are objected to each other in the open state.
  • a distance between the short-circuit ring 12 and the shorting bar 13 in the open state 1 mm to 2 mm.
  • a distance is particular ⁇ particularly easy reachable by the piezoelectric element.
  • the short-circuit ring 12 and the short-circuit rod 13 contact in the short-circuited ⁇ closed state.
  • the short-circuit ring 12 and the short-circuiting bar 13 can be electrically connected or short-circuited.
  • the short-circuit ring 12 and the short-circuit bar 13 in a voltage-free state of the actuator 40 In the voltage-free state of the actuator 40 is no control voltage to the actuator 40 and / or the control voltage is less than a predetermined voltage threshold. In this case, the conductor arrangement 15 is short-circuited by default.
  • the conductor arrangement 15 can be transferred to the actuator 40 by applying the control voltage to the open state.
  • the separating element 4 may comprise one or more semiconductor switches 41.
  • the semiconductor switch 41 is a transistor, preferably a field-effect transistor.
  • the semiconductor switch 41 is high current and allows a
  • the semi ⁇ conductor switch 41 can be designed to be self-conducting. Even ⁇ conductive means in particular that the semiconductor switch 41 is conductive without application of the control voltage.
  • An example of a normally-on semiconductor switch 41 is a SiC transistor.
  • the normally-on semiconductor switch 41 can be switched to isolated by applying the control voltage. By a normally-on semiconductor switch 41, no application of the control voltage to the semiconductor switch 41 is necessary in the second operating mode of the electric machine 1, in particular the start-up operation.
  • the separating element 4 in respective embodiments may comprise either the actuator 40 or the semiconductor switch 41. Still other embodiments may provide both the actuator 40 and the semiconductor switch 41.
  • the semiconductor switch 41 is presently part of the shorting bar 13. This arrangement is to be understood as purely exemplary. In another example, not shown in the figures, the semiconductor switch 41 is disposed between the shorting ring 12 and the shorting bar 13. The semiconductor switch 41 may be switched to its conductive state in the short-circuited state of the conductor arrangement 15. The semiconductor switch 41 may be switched to the non-conductive state in the open state of the conductor arrangement 15.
  • the rotor 2 may have a control unit 42, which controls the separating element 4 as a function of the control signal.
  • the control unit 42 applies the control voltage to the separating element 4, in particular to the actuator 40 and / or to the semiconductor switch 41, as a function of the control signal.
  • the control unit 42 adjusts the short-circuited state and / or the open state of the conductor arrangement 15 in dependence on the control signal.
  • the control signal can be received, for example, from a reception coil 52.
  • the receiving coil 52 is designed to receive a received signal from a transmitting unit
  • the electric machine 1 comprises a starting device 32 for starting the electric machine 1.
  • the starting device 32 is preferably designed to drive the electric machine 1 in the second Start operating mode and transfer after a start-up phase in the first operating mode.
  • the starting device 32 is designed to confusemodulieren the received signal to the stator magnetic field.
  • the starting device 32 may be configured to control the control unit 42 by means of the reception signal.
  • the separating element 4 by the starting device 32 is indirect
  • the starting device 32 is designed to modulate such a received signal to the stator magnetic field after the startup phase or after transferring the electric machine 1 from the second operating mode to the first operating mode that the conductor arrangement 15 is opened.
  • the starting device 32 is adapted to accelerate the electrical machine 1 in the second Be ⁇ operating mode to a synchronous speed and then to convert the electric machine 1 in the first Be ⁇ operating mode.
  • the control unit 42 may be designed to control the separating element 4 on the basis of the received signal from the starting device 32.
  • the rotor 2 may have a sensor coil 50, 51. This is shown in FIG.
  • the sensor coil 50 is designed as a diameter coil via a pole pitch of the electrical machine 1.
  • Two strands of the sensor coil 51 are in the present case with respect to an angle 58 in polar coordinates ei ⁇ ner axial sectional area of the cylindrical rotor 2 spaced by 180 °.
  • the angle 58 of the present 180 ° depends in particular on a number of pole pairs of the electric machine 1.
  • the sensor coil 51 is presently designed as a coil via a Nuttei ⁇ ment of the stator 3.
  • two strands of the sensor coil 51 are objected to in terms of an angle 59 in polar coordinates of the axial sectional area of the cylindrical rotor 2 by 10 °.
  • the sensor coil 51 is arranged on the rotor ⁇ 2, wherein the angle 59 depends on the slot pitch of the stator. 3
  • the sensor coil 50 is oriented such that, in the syn ⁇ -synchronous operation of the electrical machine 1 no voltage is induced in the sensor coil 50th
  • the synchronous operation of the electric machine 1 is given, for example, exactly when an induction voltage in the sensor coil 50 is below a first predetermined limit value.
  • the evaluation unit 53 can be connected to the control unit 42, for example via a wire or a data line.
  • the evaluation unit 53 is designed to output the control signal for the control unit 42.
  • Example ⁇ instance is formed, the evaluation unit 53 to the tax erritt to command 42 by means of the control signal, if and to convert the Lei ⁇ terantechnisch 15 in the open state, when the induction voltage in the sensing coil 50 below the first predetermined limit value.
  • the sensor coil 51 is aligned such that just then
  • Harmonic waves are induced in the sensor coil 51 when harmonics are induced in the conductor assembly 15.
  • the evaluation unit 53 is designed to evaluate the induction voltage in the sensor coil 51.
  • the evaluation unit 53 is adapted to command the control unit 42 by means of the control signal to convert the ladder assembly 15 in the open state when the induced voltage in the sensor coil 51 is located above the second specified differently surrounded limit.
  • An induction coil 55 may be adapted to the evaluation unit 53 to supply the separating element 4 and / or the Steuerein ⁇ standardized 42 with electrical energy.
  • induction coil 55 is arranged on the rotor 2 in such a way that at least then induces a supply voltage is when a driving of the separating element 4 is necessary.
  • the induction coil 55 is arranged on the rotor 2, that in the first operating mode of the electric machine 1, the supply voltage is induced. This type of energy supply of components of the electric machine 1 by induction is also called "Energy
  • the induction coil may be formed by the sensor coil 50, 51 or the Emp ⁇ fishing reel 52 55.

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

Abstract

L'invention concerne un rotor destiné à un moteur électrique (1) et comportant une première partie de rotor (10) et une seconde partie de rotor (11) qui est réalisée sous la forme d'un rotor à cage d'écureuil (17) muni d'un ensemble conducteur (15), la première partie de rotor (10) comprenant des moyens (18) permettant de créer une liaison fonctionnelle électromagnétique avec un champ magnétique statorique. L'invention vise à réduire les pertes par induction du rotor selon l'invention (2) par rapport à l'art antérieur. À cet effet, la seconde partie de rotor (11) présente un élément de séparation (4) commutable pour la mise en court-circuit et l'ouverture de l'ensemble conducteur (15) du rotor en cage d'écureuil (17), l'élément de séparation (4) pouvant être activé en fonction d'un état de fonctionnement du moteur électrique (1).
PCT/EP2017/054182 2017-02-23 2017-02-23 Moteur électrique comportant un rotor à cage d'écureuil et une unité de séparation pour l'ouverture du rotor à cage d'écureuil Ceased WO2018153455A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/054182 WO2018153455A1 (fr) 2017-02-23 2017-02-23 Moteur électrique comportant un rotor à cage d'écureuil et une unité de séparation pour l'ouverture du rotor à cage d'écureuil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/054182 WO2018153455A1 (fr) 2017-02-23 2017-02-23 Moteur électrique comportant un rotor à cage d'écureuil et une unité de séparation pour l'ouverture du rotor à cage d'écureuil

Publications (1)

Publication Number Publication Date
WO2018153455A1 true WO2018153455A1 (fr) 2018-08-30

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Application Number Title Priority Date Filing Date
PCT/EP2017/054182 Ceased WO2018153455A1 (fr) 2017-02-23 2017-02-23 Moteur électrique comportant un rotor à cage d'écureuil et une unité de séparation pour l'ouverture du rotor à cage d'écureuil

Country Status (1)

Country Link
WO (1) WO2018153455A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5068560A (en) * 1990-12-26 1991-11-26 Lynn Lundquist Reduced current starting mechanism for three phase squirrel cage motors
EP1480321A1 (fr) * 2003-05-19 2004-11-24 Robert Bosch Gmbh Elément d'entraínement électrique
US20090200885A1 (en) * 2007-12-25 2009-08-13 Hitachi, Ltd. Self starting permanent magnet synchronous motor
WO2015183379A1 (fr) * 2014-05-29 2015-12-03 Abb Technology Ag Aimant permanent stratifié ayant une construction de rotor à cage conductrice
DE102014213446A1 (de) * 2014-07-10 2016-01-14 Em-Motive Gmbh Verfahren und Vorrichtung zum Betreiben einer elektronisch kommutierten elektrischen Maschine
DE102015211669A1 (de) * 2015-06-24 2016-12-29 Zf Friedrichshafen Ag Berührungslose Energieübertragung bei drehenden Wellen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5068560A (en) * 1990-12-26 1991-11-26 Lynn Lundquist Reduced current starting mechanism for three phase squirrel cage motors
EP1480321A1 (fr) * 2003-05-19 2004-11-24 Robert Bosch Gmbh Elément d'entraínement électrique
US20090200885A1 (en) * 2007-12-25 2009-08-13 Hitachi, Ltd. Self starting permanent magnet synchronous motor
WO2015183379A1 (fr) * 2014-05-29 2015-12-03 Abb Technology Ag Aimant permanent stratifié ayant une construction de rotor à cage conductrice
DE102014213446A1 (de) * 2014-07-10 2016-01-14 Em-Motive Gmbh Verfahren und Vorrichtung zum Betreiben einer elektronisch kommutierten elektrischen Maschine
DE102015211669A1 (de) * 2015-06-24 2016-12-29 Zf Friedrichshafen Ag Berührungslose Energieübertragung bei drehenden Wellen

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