EP4331105A1 - Procédé de démarrage d'un rotor d'un moteur à pôles à griffes - Google Patents

Procédé de démarrage d'un rotor d'un moteur à pôles à griffes

Info

Publication number
EP4331105A1
EP4331105A1 EP22721649.6A EP22721649A EP4331105A1 EP 4331105 A1 EP4331105 A1 EP 4331105A1 EP 22721649 A EP22721649 A EP 22721649A EP 4331105 A1 EP4331105 A1 EP 4331105A1
Authority
EP
European Patent Office
Prior art keywords
rotor
move
pole motor
pulse
stator
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.)
Pending
Application number
EP22721649.6A
Other languages
German (de)
English (en)
Inventor
Igor Pepelyaev
Sören Rebel
Tobias Roth
Thomas Peterreins
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.)
Buehler Motor GmbH
Original Assignee
Buehler Motor GmbH
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 Buehler Motor GmbH filed Critical Buehler Motor GmbH
Publication of EP4331105A1 publication Critical patent/EP4331105A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
    • H02K1/243—Rotor cores with salient poles ; Variable reluctance rotors of the claw-pole type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/20—Arrangements for starting
    • 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
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/14—Electronic commutators
    • H02P6/16—Circuit arrangements for detecting position
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/14—Electronic commutators
    • H02P6/16—Circuit arrangements for detecting position
    • H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
    • H02P6/182—Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings

Definitions

  • the invention relates to a method for starting a rotor of a single-phase claw-pole motor according to the subject matter of patent claim 1.
  • Pumps can be used, for example, in motor vehicles for pumping and transporting liquids, such as coolant.
  • Such pumps are usually operated by means of an electric drive which is operatively connected to the rotor of the pump.
  • Single-phase claw-pole motors which have a permanently excited rotor and an electronically commutated stator, can be used as the electrical drive.
  • a Hall sensor is used to determine the relative rotor position, which is necessary to commutate the current in the stator winding to result in rotational movement of the rotor.
  • the object of the invention is to prevent a rotor of a pump from starting up incorrectly, in particular in the case of a single-phase claw-pole motor. This object is achieved by the method according to patent claim 1.
  • the method according to the invention according to claim 1 is provided for starting a rotor of a single-phase claw-pole motor, the claw-pole motor comprising a permanently excited rotor which, in nominal operation, moves in one direction, an electronically commutated stator and a hall sensor for determining the relative rotor position.
  • the procedure includes the following steps: a. Generating a pulse to move the rotor in the opposite direction by energizing a stator winding based on an inverted Hall sensor signal and b.
  • the rotor is started to move in the running direction by energizing a stator winding based on a Hall sensor signal.
  • the rotor of a pump can be locked at any number of points, preferably 8 points, by detents when it is not energized.
  • the pump electronics start the pump taking into account the signals from a Hall sensor attached to the stator.
  • the rotor position before start-up is defined by the cogging torque (defined by the magnetic circuit), friction and external torques (e.g. due to hydraulic circuit overcurrent).
  • the pump rotor When starting from the rest position (locked position), the pump rotor must overcome the short motor counter-torque during the first commutation in the direction of rotation, i.e. sufficient rotational energy must be generated. If this is not successful, the direction is reversed and the rotor starts up incorrectly. Furthermore, the commutation point in time can be shifted (e.g.
  • the rotor By means of a short impulse in the opposite direction to the running direction, the rotor is given more time and (starting) distance to gain enough momentum and thus overcome the counter-torque. It can preferably be provided that in the event that during or immediately after the generation of a pulse to move the rotor in the opposite direction of travel for a predetermined period of time, the start-up is interrupted and a new pulse to move the rotor in the opposite direction of travel for a predetermined duration takes place.
  • stator field and the stray field of the stator are superimposed at the Hall sensor position. If the rotor is offset from the nominal position so much before start-up that the rotor magnetic field at the Hall sensor is very weak, the stator stray field can unduly disturb the rotor magnetic field, so that the Hall sensor signal is directly inverted during the generation of the pulse, resulting in incorrect commutation leads.
  • the rotor starts up without generating a pulse. This could be useful, for example, in the case of overcoming a blockage of the pump, in which the start-up takes place without generating an impulse to move the rotor in the opposite direction of rotation.
  • the predetermined period of time is ascertained or determined as a function of a supply voltage of the single-phase claw-pole motor.
  • the predetermined time period is ascertained or determined as a function of the supply voltage of the single-phase claw-pole motor.
  • This advantageously decouples the energy input in the winding and the effective effect of preventing or reducing the False starts depending on the supply voltage.
  • stator winding is preferably energized by commutation of power electronics.
  • components are components commonly used in the prior art, such as MOSFETs or IGBTs.
  • the predetermined period of time is selected such that the movement of the rotor in the opposite direction causes it to accelerate more than it decelerates during the subsequent start-up in order to overcome a counter-torque at a first commutation point in time in order to ensure movement in the direction of travel.
  • a false start is preferably prevented.
  • At least one impulse can be applied to ensure a correct start-up position.
  • the pulse is a short-term phase commutation in the opposite direction before the actual start-up, that is to say energizing a stator winding on the basis of an inverted Hall sensor signal.
  • the impulse to move the rotor in the opposite direction of rotation ensures that the rotor receives sufficient "momentum" during the subsequent start-up in the correct direction of rotation to overcome the counter-torque during the first commutation.
  • the Hall sensor is mounted on the stator or on an electronic circuit board and is offset in the direction of rotation with respect to a central position of a stator pole. This ensures that the rotor starts up in the correct direction of rotation.
  • the single-phase claw-pole motor is preferably used in electric pumps, in particular in electric centrifugal pumps.
  • electric liquid pumps are also conceivable for the application.
  • FIG. 1 shows a process flow diagram of a start-up of a single-phase
  • FIG. 2 shows a process flow chart of a start-up of a single-phase
  • FIG. 1 shows a process flowchart for starting a single-phase claw-pole motor according to the prior art.
  • the motor phases are commutated with 100% duty cycle in relation to the frequency of the fall sensor, after which another commutation operating mode can be selected, for example 100% duty cycle or a regulated speed, or controlled or regulated motor operation.
  • the rotor can start in the correct direction or in the opposite direction, which can result in what is known as a false start. In other words is the
  • the rotor position taken by the rotor before start-up depends on the tolerances or inaccuracies on the following components:
  • FIG. 2 shows a process flowchart for starting a single-phase claw-pole motor according to the present invention.
  • a pulse is generated to move the rotor in the opposite direction by energizing a stator winding based on an inverted Hall sensor signal.
  • the pulse is generated before the start-up begins.
  • the rotor is shifted backwards by a certain distance in the opposite direction. This enables the rotor to cover an increased distance to generate sufficient acceleration energy to overcome the counter-torque after the first commutation instant.
  • After the first commutation time there is a short braking and a long acceleration phase.
  • the pulse is preferably a brief (for example 1.5 msec) phase commutation in the opposite direction before start-up, that is to say energizing a stator winding on the basis of an inverted Hall sensor signal.
  • the reverse phase commutation causes the rotor to shift in the opposite direction of rotation and during the subsequent start-up it experiences more acceleration than braking, which prevents starting in the wrong direction.
  • a Hall sensor signal is used to monitor the start-up. After the generation of the pulse in the opposite direction, some commutations with 100% duty cycle and then any operation, for example, continue to be 100% duty cycle or a regulated speed, or a controlled or regulated motor operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

L'invention concerne un procédé de démarrage d'un rotor d'un moteur à pôles à griffes monophasé, ledit moteur à pôles à griffes comprenant un rotor à aimant permanent qui réalise un mouvement dans une direction de déplacement pendant le fonctionnement à une valeur nominale, comprenant en outre un stator à commutation électronique, et un capteur à effet Hall pour déterminer la position relative du rotor, le procédé comprenant les étapes suivantes : a. la génération d'une impulsion pour déplacer le rotor dans la direction de marche opposée par mise sous tension d'un enroulement de stator sur la base d'un signal de capteur à effet Hall inversé; b. le démarrage du rotor pour le déplacer dans la direction de déplacement par mise sous tension d'un enroulement de stator sur la base d'un signal de capteur à effet Hall.
EP22721649.6A 2021-04-27 2022-04-01 Procédé de démarrage d'un rotor d'un moteur à pôles à griffes Pending EP4331105A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021110689.3A DE102021110689A1 (de) 2021-04-27 2021-04-27 Verfahren zum Anlaufen eines Rotors eines Klauenpolmotors
PCT/DE2022/200060 WO2022228624A1 (fr) 2021-04-27 2022-04-01 Procédé de démarrage d'un rotor d'un moteur à pôles à griffes

Publications (1)

Publication Number Publication Date
EP4331105A1 true EP4331105A1 (fr) 2024-03-06

Family

ID=81585824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22721649.6A Pending EP4331105A1 (fr) 2021-04-27 2022-04-01 Procédé de démarrage d'un rotor d'un moteur à pôles à griffes

Country Status (6)

Country Link
US (1) US12556048B2 (fr)
EP (1) EP4331105A1 (fr)
CN (1) CN117296242A (fr)
DE (1) DE102021110689A1 (fr)
MX (1) MX2023011739A (fr)
WO (1) WO2022228624A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2901000A1 (de) * 1979-01-12 1980-08-14 Teldix Gmbh Kollektorlose gleichstrommaschine
EP0216202B2 (fr) * 1980-11-11 1995-03-08 Magnet-Motor Gesellschaft für magnetmotorische Technik mbH Moteur électrique
DE4122109A1 (de) 1991-07-04 1993-01-07 Standard Elektrik Lorenz Ag Verfahren und schaltungsanordnung zur anlaufsteuerung eines elektronisch kommutierten gleichstrommotors
DE10309077A1 (de) * 2003-03-03 2004-09-16 Robert Bosch Gmbh Motor für eine Motor-Getriebe-Kombination mit reduziertem Bauraumbedarf
NZ549662A (en) * 2006-09-04 2009-01-31 Wellington Drive Technologies Control of synchronous electrical machines
DE102007013738B4 (de) * 2007-03-22 2009-10-08 Minebea Co., Ltd. Elektrische Maschine mit Klauenpolstator
US20160344318A1 (en) * 2014-08-08 2016-11-24 Johnson Electric S.A. Motor, motor driving circuit and integrated circuit for driving motor
CN109891708B (zh) * 2016-10-26 2021-06-25 阿莫泰克有限公司 利用多层基板的层叠型定子和利用其的车载传感器
DE102017126622A1 (de) * 2016-11-15 2018-05-17 Johnson Electric S.A. Motor und diesen verwendendes Gebrauchsgerät

Also Published As

Publication number Publication date
US20240055917A1 (en) 2024-02-15
CN117296242A (zh) 2023-12-26
US12556048B2 (en) 2026-02-17
WO2022228624A1 (fr) 2022-11-03
MX2023011739A (es) 2023-10-13
DE102021110689A1 (de) 2022-10-27

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