DE102009001353A1 - Electric machine i.e. permanent magnet-excited synchronous machine, has sensor detecting rotational position of rotor and arranged on cover such that rotor hub or component torque-proofly connected with hub serve as sensor track of sensor - Google Patents

Electric machine i.e. permanent magnet-excited synchronous machine, has sensor detecting rotational position of rotor and arranged on cover such that rotor hub or component torque-proofly connected with hub serve as sensor track of sensor Download PDF

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Publication number
DE102009001353A1
DE102009001353A1 DE200910001353 DE102009001353A DE102009001353A1 DE 102009001353 A1 DE102009001353 A1 DE 102009001353A1 DE 200910001353 DE200910001353 DE 200910001353 DE 102009001353 A DE102009001353 A DE 102009001353A DE 102009001353 A1 DE102009001353 A1 DE 102009001353A1
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Germany
Prior art keywords
sensor
rotor
hub
cover
rotational position
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.)
Withdrawn
Application number
DE200910001353
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German (de)
Inventor
Kai BORNTRÄGER
Rene Budach
Bernard Hunold
Max Bachmann
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.)
ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Priority to DE200910001353 priority Critical patent/DE102009001353A1/en
Publication of DE102009001353A1 publication Critical patent/DE102009001353A1/en
Withdrawn legal-status Critical Current

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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
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices

Abstract

The machine has a rotor (1) provided with a rotor hub (4), and a stator (6) arranged in a stator housing (2). A cover (3) is connected to the stator housing that extends up to inner diameter of the rotor hub. A rotor position sensor (7) detects rotational position of the rotor opposite to a magnetic field of the stator. The sensor is arranged on the cover in proximity of a rotor bearing (5) such that the rotor hub or a component torque-proofly connected with the rotor hub serve as a sensor track of the sensor.

Description

Die vorliegende Erfindung bezieht sich auf eine Elektromaschine mit Rotorlagesensor.The The present invention relates to an electric machine Rotor position sensor.

Bei Elektromaschinen, insbesondere permanentmagneterregten Synchronmaschinen, ist oft die Ermittlung der rotatorischen Lage des Rotors erforderlich bzw. erwünscht. Für den Betrieb einer derartigen Elektromaschine ist in der Regel die Bestimmung der rotatorischen Lage des Rotors gegenüber dem Magnetfeld des Stators erforderlich. Hierbei unterliegen bekannte Sensorsysteme Einschränkungen hinsichtlich des Luftspalts zwischen dem Sensor und der Geberspur des Sensors.at Electric machines, in particular permanent magnet synchronous machines, often the determination of the rotational position of the rotor is required or desired. For the Operation of such an electric machine is usually the determination of rotational position of the rotor relative to the magnetic field of the stator required. Here, known sensor systems are subject to restrictions in terms of the air gap between the sensor and the encoder track of the sensor.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Elektromaschine mit Rotorlagesensor anzugeben, welche eine einstellfreie Platzierung des Sensors ermöglicht.Of the The present invention is based on the object, an electric machine specify with rotor position sensor, which is an adjustment-free placement allows the sensor.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. Eine weitere erfindungsgemäße Ausgestaltung geht aus dem Unteranspruch hervor.These The object is solved by the features of claim 1. A another embodiment of the invention is apparent from the dependent claim.

Demnach wird vorgeschlagen, den Sensor zur Erfassung der rotatorischen Lage des Rotors gegenüber dem Magnetfeld des Stators in einer Elektromaschine, insbesondere permanentmagneterregten Synchronmaschine, derart anzuordnen, dass als Geberspur des Sensors die Rotornabe oder ein mit der Rotornabe verbundenes Bauteil dient. Durch diese Konzeption ist eine einstellfreie Platzierung realisierbar.Therefore it is proposed to use the sensor to detect the rotational position opposite the rotor the magnetic field of the stator in an electric machine, in particular Permanent magnet synchronous machine to be arranged such that as encoder track of the sensor, the rotor hub or one with the rotor hub connected component is used. This conception is an adjustment-free Placement feasible.

Bei Elektromaschinen kann die Lagerung des Rotors über eine an das Statorgehäuse angebundene Abdeckung erfolgen, die radial an den Blechpa keten der permanentmagneterregten Synchronmaschine bis auf den Innendurchmesser der Rotornabe vorbei führt. Hierbei wird zwischen dem Rotor und dem Stator bzw. zwischen deren Naben und der Abdeckung eine sehr kurze Toleranzkette geschaffen.at Electric machines can support the bearing of the rotor via a connected to the stator housing Cover made radially to the Blechpa keten the permanent magnet excited Synchronous machine to the inner diameter of the rotor hub over leads. This is between the rotor and the stator or between the Hubs and the cover created a very short tolerance chain.

Gemäß der Erfindung wird bei einem derartig aufgebauten System vorgeschlagen, den Sensor zur Erfassung der rotatorischen Lage des Rotors gegenüber dem Magnetfeld des Stators an einer Stelle der Abdeckung anzuordnen, derart, dass als Geberspur des Sensors die Rotornabe oder ein mit der Rotornabe verbundenes Bauteil dient. Vorzugsweise ist der Sensor in der Nähe der Lagerstelle des Rotors angeordnet. Die Abdeckung kann hierbei derart ausgeführt sein, dass ein definierter Luftspalt zwischen dem Sensor und der Geberspur des Sensors entsteht.According to the invention is suggested in such a constructed system, the sensor for detecting the rotational position of the rotor relative to the To arrange the magnetic field of the stator at a position of the cover, such that as encoder track of the sensor, the rotor hub or a with the rotor hub connected component is used. Preferably, the sensor near the bearing of the rotor arranged. The cover can hereby executed in such a way be that a defined air gap between the sensor and the Encoder track of the sensor is created.

Durch die Nähe des Sensors zur Lagerstelle, die Kürze der Toleranzkette sowie durch die Nachbarschaft zwischen der ruhenden Abdeckung und der drehenden Rotornabe ist die vorgeschlagene Anordnung des Sensors besonders vorteilhaft.By the roundabouts the sensor to the bearing, the shortness of the tolerance chain and by the neighborhood between the dormant cover and the rotating rotor hub is the proposed arrangement of the sensor especially advantageous.

Gemäß einer Weiterbildung der Erfindung kann vorgesehen sein, dass der Sensor auf einem Sensorhalter angeordnet ist, der durch eine Öffnung des Getriebegehäuses bzw. der Abdeckung oder der Kupplungsglocke führbar ist und im montierten Zustand in das Gehäuse der Elektromaschine, insbesondere permanentmagneterregten Synchronmaschine, hineinragt. Durch diese Konzeption wird auf einfache Weise ein montagefreundlicher Austausch des Sensors ermöglicht.According to one Further development of the invention can be provided that the sensor is arranged on a sensor holder which passes through an opening of the transmission case or the cover or the clutch bell is feasible and mounted in the Condition in the case the electric machine, in particular permanent-magnet-excited synchronous machine, protrudes. This concept makes installation easier in a simple way Replacement of the sensor allows.

Besonders vorteilhaft ist es, wenn als Öffnung eine im Gehäuse vorhandene Öffnung für einen Nebenabtrieb (PTO) dient.Especially it is advantageous if as an opening one in the housing existing opening for a power take-off (PTO) is used.

Die Erfindung wird im Folgenden anhand der beigefügten Figur, welche eine schematische Schnittansicht einer permanentmagneterregten Synchronmaschine darstellt, beispielhaft näher erläutert.The Invention will be described below with reference to the accompanying figure, which is a schematic Represents a sectional view of a permanent magnet synchronous machine, example closer explained.

Bei dem in der Figur gezeigten Beispiel erfolgt die Lagerung 5 des Rotors 1 über eine an das Statorgehäuse 2 angebundene Abdeckung 3. Das Statorgehäuse 2 selbst ist wiederum an einem Getriebegehäuse 8 befestigt, welches insbesondere Bestandteil eines nicht dargestellten Hybridantriebsstranges ist. Die Abdeckung erstreckt sich radial betrachtet an den Blechpaketen der permanentmagneterregten Synchronmaschine bis zum Innendurchmesser der Rotornabe 4. Dadurch entsteht der Vorteil, dass zwischen dem Rotor 1 und dem Stator 6 bzw. zwischen deren Naben und der Abdeckung 3 eine sehr kurze Toleranzkette geschaffen wird.In the example shown in the figure, the storage takes place 5 of the rotor 1 via one to the stator housing 2 tailed cover 3 , The stator housing 2 itself is in turn on a gearbox 8th attached, which is in particular part of a hybrid drive train, not shown. The cover extends radially viewed on the laminated cores of the permanent magnet synchronous machine to the inner diameter of the rotor hub 4 , This creates the advantage that between the rotor 1 and the stator 6 or between their hubs and the cover 3 a very short tolerance chain is created.

Erfindungsgemäß ist der Sensor 7 zur Erfassung der rotatorischen Lage des Rotors 1 gegenüber dem Magnetfeld des Stators 6 an einer Stelle der Abdeckung 3 angeordnet, so dass als Geberspur des Sensors 7 die Rotornabe 4 dient.According to the invention, the sensor 7 for detecting the rotational position of the rotor 1 opposite to the magnetic field of the stator 6 at one point of the cover 3 arranged so that as a sensor track of the sensor 7 the rotor hub 4 serves.

Alternativ dazu kann gemäß einer Weiterbildung der Erfindung als Geberspur des Sensors 7 ein mit der Rotornabe 4 drehfest verbundenes Bauteil dienen. Besonders vorteilhaft ist es, wenn der Sensor 7 in der Nähe der Rotorlagerung 5 angeordnet ist, wie in der Figur gezeigt.Alternatively, according to an embodiment of the invention as a sensor track of the sensor 7 one with the rotor hub 4 serve rotatably connected component. It is particularly advantageous if the sensor 7 near the rotor bearing 5 is arranged as shown in the figure.

Bei dem gezeigten Beispiel ist die Abdeckung 3 derart ausgeführt, dass ein definierter Luftspalt zwischen dem Sensor 7 und der Geberspur des Sensors 7 d. h. der Rotornabe 4 entsteht.In the example shown, the cover 3 executed such that a defined air gap between the sensor 7 and the sensor track of the sensor 7 ie the rotor hub 4 arises.

11
Rotorrotor
22
Statorgehäusestator
33
Abdeckungcover
44
Rotornaberotor hub
55
Rotorlagerungrotor bearing
66
Statorstator
77
Sensorsensor
88th
Getriebegehäusegearbox

Claims (2)

Elektromaschine aufweisend – einen Rotor (1) mit einer Rotornabe (4), – einen in einem Statorgehäuse (2) angeordneten Stator (6), – eine Abdeckung (3), welche an das Statorgehäuse (2) angebunden ist, welche sich bis zum Innendurchmesser der Rotornabe (4) erstreckt und über welche der Rotor (1) mittels einer Rotorlagerung (5) gelagert ist, und – einen Rotorlagesensor (7) zur Erfassung der rotatorischen Lage des Rotors (1) gegenüber dem Magnetfeld des Stators (6), welcher Sensor (7) derart auf der Abdeckung (3) in der Nähe der Rotorlagerung (5) angeordnet ist, dass als Geberspur des Sensors (7) die Rotornabe (4) oder ein mit der Rotornabe (4) drehfest verbundenes Bauteil dient.Electric machine comprising - a rotor ( 1 ) with a rotor hub ( 4 ), - one in a stator housing ( 2 ) arranged stator ( 6 ), - a cover ( 3 ), which are connected to the stator housing ( 2 ), which extends to the inner diameter of the rotor hub ( 4 ) and over which the rotor ( 1 ) by means of a rotor bearing ( 5 ), and - a rotor position sensor ( 7 ) for detecting the rotational position of the rotor ( 1 ) relative to the magnetic field of the stator ( 6 ), which sensor ( 7 ) on the cover ( 3 ) in the vicinity of the rotor bearing ( 5 ) is arranged such that as a sensor track of the sensor ( 7 ) the rotor hub ( 4 ) or one with the rotor hub ( 4 ) rotatably connected component is used. Elektromaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Abdeckung (3) derart ausgeführt ist, dass ein definierter Luftspalt zwischen dem Sensor (7) und der Geberspur des Sensors (7) entsteht.Electric machine according to claim 1, characterized in that the cover ( 3 ) is designed such that a defined air gap between the sensor ( 7 ) and the sensor track of the sensor ( 7 ) arises.
DE200910001353 2009-03-05 2009-03-05 Electric machine i.e. permanent magnet-excited synchronous machine, has sensor detecting rotational position of rotor and arranged on cover such that rotor hub or component torque-proofly connected with hub serve as sensor track of sensor Withdrawn DE102009001353A1 (en)

Priority Applications (1)

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DE200910001353 DE102009001353A1 (en) 2009-03-05 2009-03-05 Electric machine i.e. permanent magnet-excited synchronous machine, has sensor detecting rotational position of rotor and arranged on cover such that rotor hub or component torque-proofly connected with hub serve as sensor track of sensor

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DE200910001353 DE102009001353A1 (en) 2009-03-05 2009-03-05 Electric machine i.e. permanent magnet-excited synchronous machine, has sensor detecting rotational position of rotor and arranged on cover such that rotor hub or component torque-proofly connected with hub serve as sensor track of sensor

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013203388B3 (en) * 2013-02-28 2014-03-20 Schaeffler Technologies AG & Co. KG Rotor position sensor for an electronically commutated electrical machine with a reference encoder
WO2018024280A1 (en) 2016-08-05 2018-02-08 Schaeffler Technologies AG & Co. KG Control unit and method for controlling an electric machine
DE102021120800A1 (en) 2021-08-10 2023-02-16 Schaeffler Technologies AG & Co. KG electrical machine
DE102021131033B3 (en) 2021-11-26 2023-03-02 Schaeffler Technologies AG & Co. KG Sensor arrangement and electrical machine
DE102022101157A1 (en) 2022-01-19 2023-07-20 Schaeffler Technologies AG & Co. KG Sensor arrangement and electrical machine
DE102022102630A1 (en) 2022-02-04 2023-08-10 Schaeffler Technologies AG & Co. KG Sensor arrangement and electrical machine
DE102022106475A1 (en) 2022-03-21 2023-09-21 Schaeffler Technologies AG & Co. KG Sensor carrier, inductive position sensor, method for compensating non-linearities in sensor carriers, computer program product, control unit and X-by-wire system
DE102022116956A1 (en) 2022-07-07 2024-01-18 Schaeffler Technologies AG & Co. KG Inductive position sensor, method for compensating measurement errors in an inductive position sensor, computer program product, electrical machine and X-by-wire system for a motor vehicle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0650246A1 (en) * 1992-07-09 1995-04-26 Seiko Epson Corporation Brushless motor
DE10338140A1 (en) * 2003-08-19 2005-03-24 Minebea Co., Ltd. Outer-rotor type motor has two roll bearings which are respectively arranged at support shaft drawing portion positioned between stator and base, and stress transmission structure in base

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0650246A1 (en) * 1992-07-09 1995-04-26 Seiko Epson Corporation Brushless motor
DE10338140A1 (en) * 2003-08-19 2005-03-24 Minebea Co., Ltd. Outer-rotor type motor has two roll bearings which are respectively arranged at support shaft drawing portion positioned between stator and base, and stress transmission structure in base

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013203388B3 (en) * 2013-02-28 2014-03-20 Schaeffler Technologies AG & Co. KG Rotor position sensor for an electronically commutated electrical machine with a reference encoder
WO2014131408A2 (en) 2013-02-28 2014-09-04 Schaeffler Technologies Gmbh & Co. Kg Rotor position encoder for an electronically comutated electric machine having a reference encoder
US10177638B2 (en) 2013-02-28 2019-01-08 Schaeffler Technologies AG & Co. KG Rotor position encoder for an electronically commutated electric machine having a reference encoder
WO2018024280A1 (en) 2016-08-05 2018-02-08 Schaeffler Technologies AG & Co. KG Control unit and method for controlling an electric machine
DE102016214497A1 (en) 2016-08-05 2018-02-08 Schaeffler Technologies AG & Co. KG Control unit and method for controlling an electric machine
DE102021120800A1 (en) 2021-08-10 2023-02-16 Schaeffler Technologies AG & Co. KG electrical machine
DE102021131033B3 (en) 2021-11-26 2023-03-02 Schaeffler Technologies AG & Co. KG Sensor arrangement and electrical machine
WO2023093928A1 (en) 2021-11-26 2023-06-01 Schaeffler Technologies AG & Co. KG Sensor arrangement and electric machine
DE102022101157A1 (en) 2022-01-19 2023-07-20 Schaeffler Technologies AG & Co. KG Sensor arrangement and electrical machine
DE102022102630A1 (en) 2022-02-04 2023-08-10 Schaeffler Technologies AG & Co. KG Sensor arrangement and electrical machine
DE102022106475A1 (en) 2022-03-21 2023-09-21 Schaeffler Technologies AG & Co. KG Sensor carrier, inductive position sensor, method for compensating non-linearities in sensor carriers, computer program product, control unit and X-by-wire system
DE102022116956A1 (en) 2022-07-07 2024-01-18 Schaeffler Technologies AG & Co. KG Inductive position sensor, method for compensating measurement errors in an inductive position sensor, computer program product, electrical machine and X-by-wire system for a motor vehicle

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Effective date: 20121002