WO2022228624A1 - Verfahren zum anlaufen eines rotors eines klauenpolmotors - Google Patents
Verfahren zum anlaufen eines rotors eines klauenpolmotors Download PDFInfo
- Publication number
- WO2022228624A1 WO2022228624A1 PCT/DE2022/200060 DE2022200060W WO2022228624A1 WO 2022228624 A1 WO2022228624 A1 WO 2022228624A1 DE 2022200060 W DE2022200060 W DE 2022200060W WO 2022228624 A1 WO2022228624 A1 WO 2022228624A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- move
- pole motor
- pulse
- stator
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 210000000078 claw Anatomy 0.000 title abstract description 5
- 238000004804 winding Methods 0.000 claims abstract description 13
- 230000001133 acceleration Effects 0.000 claims description 6
- 230000005355 Hall effect Effects 0.000 abstract 3
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000005415 magnetization Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280029178.1A CN117296242A (zh) | 2021-04-27 | 2022-04-01 | 用于起动爪极马达的转子的方法 |
EP22721649.6A EP4331105A1 (de) | 2021-04-27 | 2022-04-01 | Verfahren zum anlaufen eines rotors eines klauenpolmotors |
US18/382,667 US20240055917A1 (en) | 2021-04-27 | 2023-10-23 | Method for starting a rotor of a claw pole motor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021110689.3 | 2021-04-27 | ||
DE102021110689.3A DE102021110689A1 (de) | 2021-04-27 | 2021-04-27 | Verfahren zum Anlaufen eines Rotors eines Klauenpolmotors |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18/382,667 Continuation-In-Part US20240055917A1 (en) | 2021-04-27 | 2023-10-23 | Method for starting a rotor of a claw pole motor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022228624A1 true WO2022228624A1 (de) | 2022-11-03 |
Family
ID=81585824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2022/200060 WO2022228624A1 (de) | 2021-04-27 | 2022-04-01 | Verfahren zum anlaufen eines rotors eines klauenpolmotors |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240055917A1 (de) |
EP (1) | EP4331105A1 (de) |
CN (1) | CN117296242A (de) |
DE (1) | DE102021110689A1 (de) |
WO (1) | WO2022228624A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2901000A1 (de) * | 1979-01-12 | 1980-08-14 | Teldix Gmbh | Kollektorlose gleichstrommaschine |
EP0216202A1 (de) * | 1980-11-11 | 1987-04-01 | Magnet-Motor Gesellschaft für magnetmotorische Technik mbH | Elektromotor |
EP1465323A2 (de) * | 2003-03-03 | 2004-10-06 | Robert Bosch Gmbh | Motor für eine Motor-Getriebe-Kombination mit reduziertem Bauraumbedarf |
DE102007013738A1 (de) * | 2007-03-22 | 2008-09-25 | Minebea Co., Ltd. | Klauenpolmaschine |
DE102017126622A1 (de) * | 2016-11-15 | 2018-05-17 | Johnson Electric S.A. | Motor und diesen verwendendes Gebrauchsgerät |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4122109A1 (de) | 1991-07-04 | 1993-01-07 | Standard Elektrik Lorenz Ag | Verfahren und schaltungsanordnung zur anlaufsteuerung eines elektronisch kommutierten gleichstrommotors |
-
2021
- 2021-04-27 DE DE102021110689.3A patent/DE102021110689A1/de active Pending
-
2022
- 2022-04-01 CN CN202280029178.1A patent/CN117296242A/zh active Pending
- 2022-04-01 WO PCT/DE2022/200060 patent/WO2022228624A1/de active Application Filing
- 2022-04-01 EP EP22721649.6A patent/EP4331105A1/de active Pending
-
2023
- 2023-10-23 US US18/382,667 patent/US20240055917A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2901000A1 (de) * | 1979-01-12 | 1980-08-14 | Teldix Gmbh | Kollektorlose gleichstrommaschine |
EP0216202A1 (de) * | 1980-11-11 | 1987-04-01 | Magnet-Motor Gesellschaft für magnetmotorische Technik mbH | Elektromotor |
EP1465323A2 (de) * | 2003-03-03 | 2004-10-06 | Robert Bosch Gmbh | Motor für eine Motor-Getriebe-Kombination mit reduziertem Bauraumbedarf |
DE102007013738A1 (de) * | 2007-03-22 | 2008-09-25 | Minebea Co., Ltd. | Klauenpolmaschine |
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 |
DE102021110689A1 (de) | 2022-10-27 |
EP4331105A1 (de) | 2024-03-06 |
CN117296242A (zh) | 2023-12-26 |
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