WO2009090986A1 - モータの位置検出方法およびモータの駆動装置並びにポンプ - Google Patents
モータの位置検出方法およびモータの駆動装置並びにポンプ Download PDFInfo
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- WO2009090986A1 WO2009090986A1 PCT/JP2009/050436 JP2009050436W WO2009090986A1 WO 2009090986 A1 WO2009090986 A1 WO 2009090986A1 JP 2009050436 W JP2009050436 W JP 2009050436W WO 2009090986 A1 WO2009090986 A1 WO 2009090986A1
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- Prior art keywords
- rotor
- motor
- position detection
- tooth
- induced voltage
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- 238000001514 detection method Methods 0.000 title claims abstract description 75
- 238000004804 winding Methods 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 11
- 230000004907 flux Effects 0.000 description 8
- 239000000696 magnetic material Substances 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- 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
- H02K29/12—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using detecting coils using the machine windings as detecting coil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- 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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/22—Multiple windings; Windings for more than three phases
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- 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
Definitions
- the present invention relates to a brushless motor, and more particularly, to a motor position detecting method for detecting the axial position of a rotor provided in the brushless motor, a motor driving device, and a pump including the motor driving device.
- the rotor in a brushless motor used for a canned motor pump or the like such as an artificial heart pump, the rotor is not fixed in the direction of the rotation axis and is supported in a non-contact manner by a dynamic pressure bearing or a magnetic bearing. It is configured to be able to move in the direction. At this time, it is necessary to detect the position of the rotor in the axial direction in order to confirm whether or not the rotor is in an appropriate position and to adjust the position of the rotor in the rotational axis direction.
- a general-purpose displacement sensor optical type, eddy current type, capacitance type, etc.
- the position of the rotor is detected based on a signal from this sensor. It has been known.
- the adjustment device has at least one sensor having a sensor for detecting the axial movement of the rotor.
- the motor to be incorporated must be downsized. For this reason, the method for detecting the position of the rotor in the axial direction using the above-described general-purpose sensor has a problem that the motor cannot be reduced in size.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a motor position detection method, a motor drive device, and a pump that detect the position of the rotor in the axial direction without using a sensor. .
- a first aspect of the present invention is a method for detecting a position of a motor having a rotor and a stator around which a plurality of armature windings are wound, and a position detecting coil is disposed on one end surface in the axial direction of the stator core.
- the induced voltage generated in the position detecting coil is detected, and the position of the rotor in the axial direction is detected based on the detection result.
- the position detection coil is disposed on one end surface in the axial direction of the stator, the axial direction of the rotor can be detected by detecting the induced voltage corresponding to the axial position of the rotor generated in the position detection coil. Can be detected easily and without using a general-purpose sensor.
- the position detection coil is further disposed on the other axial end surface of the stator core, the induced voltage generated in the position detection coil disposed on the one axial end surface, the axial direction, and the like.
- the axial position of the rotor may be detected based on a voltage difference from an induced voltage generated in the position detection coil disposed on the end face.
- Position detection coils are arranged on both axial end faces of the stator core, and the rotor axial position is detected based on the voltage difference between the induced voltages generated in both position detection coils, further increasing the axial position detection accuracy of the rotor. It becomes possible to improve.
- the position detection coil is disposed approximately 1 / N of the outer periphery of the stator core.
- the position detection coil is arranged approximately 1 / N of the outer periphery of the stator core, so that it is possible to reliably capture the induced voltage generated in the position detection coil. It becomes. As a result, the rotor position detection accuracy can be further improved.
- the position detection coil may be integrally attached to the stator core.
- a second aspect of the present invention is a method for detecting a position of a motor having a rotor and a stator around which a plurality of phases of armature windings are wound.
- One end portion of the first tooth and the second tooth in the rotational axis direction of the rotor is made of a non-magnetic material, and the one end portion made of the non-magnetic material is formed by the first tooth and the second tooth.
- This is a motor position detection method for detecting the position of the rotor in the axial direction.
- two teeth are arbitrarily selected as the first tooth and the second tooth among the teeth around which the in-phase armature winding is wound, and one end portion of the teeth in the rotor rotation axis direction is selected. It is composed of a non-magnetic material. At this time, the end portion formed of the nonmagnetic material is asymmetric between the first tooth and the second tooth. Thereby, the voltage induced in the armature winding wound around the first tooth and the voltage induced in the armature winding wound around the second tooth according to the rotational axis position of the rotor. It is possible to make it different.
- the shaft of the rotor is obtained.
- the position in the direction can be detected. This makes it possible to easily detect the rotor position without providing a rotor position detection sensor. Further, since it becomes possible to dispense with a sensor, space saving can be expected.
- the first teeth and the second teeth are arranged to face each other with the central axis of the stator interposed therebetween.
- a motor drive device having a rotor and a stator around which a plurality of phases of armature windings are wound, the position being disposed on one axial end surface of the stator core. It is a motor drive device that detects an induced voltage generated in a detection coil and detects the position of the rotor in the axial direction based on the detected induced voltage.
- a motor drive device having a rotor and a stator around which a plurality of phases of armature windings are wound, wherein the first phase is wound with in-phase armature windings.
- One end of each of the teeth and the second tooth in the direction of the rotation axis of the rotor is made of a nonmagnetic material, and the one end made of the nonmagnetic material is asymmetric between the first tooth and the second tooth. And based on the difference between the induced voltage generated in the armature winding wound around the first tooth and the induced voltage generated in the armature winding wound around the second tooth. It is a motor drive device that detects the position of the rotor in the axial direction.
- the motor position detection method and motor drive apparatus of the present invention are suitable for use in various brushless motors.
- it is suitable for use in pumps that require miniaturization, such as canned motor pumps such as artificial heart pumps.
- the said aspect can be utilized combining in the possible range.
- FIG. 1 is a cross-sectional view of a three-phase brushless motor according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the brushless motor shown in FIG. It is a schematic perspective view of the brushless motor for demonstrating the example of attachment of the coil for position detection. It is the figure which showed the magnetic flux loop of the brushless motor shown in FIG. 1 is a schematic configuration diagram of a motor drive device according to a first embodiment of the present invention. It is a schematic block diagram of the switching circuit shown in FIG.
- FIG. 4 is a diagram showing an example of an amplitude change of an induced voltage generated in a position detection coil with respect to an axial displacement of a rotor 3.
- FIG. 15 is a cross-sectional view of the motor shown in FIG. It is a figure for demonstrating the relationship between the voltage difference of the induced voltage which arises in the armature winding of the upstream and downstream of a U-phase non-energization period at the time of a motor drive, and the axial direction position of a rotor.
- FIG. 1 is a cross-sectional view of a three-phase brushless motor (hereinafter referred to as “motor”) according to the first embodiment of the present invention
- FIG. 2 is a cross-sectional view of the motor 1 shown in FIG.
- FIG. 3 is a schematic perspective view of a motor for explaining an example of attaching a position detection coil.
- the motor 1 shown in FIGS. 1 to 3 includes a stator 2 and a rotor 3.
- the stator 2 has a plurality of stator teeth 22 provided at predetermined intervals in the circumferential direction inside a cylindrical stator core 21 formed by laminating a large number of thin magnetic steel plates.
- the stator teeth 22 are wound with a three-phase armature winding 25 (see FIG. 2) that is Y-connected.
- a rotor 3 in which a predetermined air gap 23 is opened and a four-pole permanent magnet 24 is arranged in the circumferential direction is rotatably arranged.
- a position detection coil 5 for detecting the position of the rotor 3 in the axial direction is provided on the end surface in the axial direction of the stator core 21 of the stator 2.
- the position detecting coil 5 includes, for example, a thin iron core 6 provided in the circumferential direction on the axial end surface of the stator core 21 and a winding 7 wound around the iron core 6.
- the length of the iron core 6 is not particularly limited.
- the length is about 1 / N of the circumference of the stator core 21, that is, in this embodiment, the circumference of the stator core 21.
- the length should be about one-fourth of the length.
- the magnetic flux generated from the N pole of an arbitrary permanent magnet 24 passes through the air gap 23 and passes through the outer periphery of the winding wound around the stator teeth 22. After passing through the gap 23 again, it returns to the south pole of the adjacent permanent magnet 24.
- FIG. 5 is a diagram showing an overall schematic configuration of the drive device of the motor 1.
- the motor drive device 30 includes a DC power supply 31, a controller 32, and a switching circuit 33.
- the switching circuit 33 includes six switching elements 41 to 46 connected in a three-phase bridge.
- Examples of the switching elements 41 to 46 include power transistors, IGBTs, and power FETs.
- a power diode (not shown) is connected to each switching element 41 to 46 in antiparallel.
- Each of the switching elements 41 to 46 performs a switching operation according to a control signal from the controller 32, for example, a PWM control signal, and supplies power to each phase armature winding U, V, W of the motor 1 from the DC power supply 31.
- a control signal from the controller 32 for example, a PWM control signal
- the switching elements 41 and 42 correspond to the U-phase, and one end of the U-phase armature winding is connected to the connection point.
- Switching elements 43 and 44 correspond to the W phase, and one end of the W phase armature winding is connected to the connection point.
- the switching elements 45 and 46 correspond to the V phase, and one end of the V-phase armature winding is connected to the connection point. The other end of each phase armature winding is connected in common.
- the voltage across the winding 7 constituting the position detecting coil 5 shown in FIGS. 1 to 3 is measured by a voltage measuring device (not shown) and input to the controller 32.
- the controller 32 generates a PWM control signal based on the required torque or the required rotational speed and supplies it to the switching circuit 33 and detects the axial position of the rotor 3 based on the voltage across the position detection coil 5. To do.
- FIG. 7 is a diagram showing an example of the amplitude change of the voltage across the winding 7 with respect to the axial displacement of the rotor 3, that is, the induced voltage VL generated in the position detecting coil 5, and FIG. 8 shows the axial position of the rotor 3. It is the figure which showed the relationship between the amplitude of induced voltage VL.
- the horizontal axis represents time
- the vertical axis represents the induced voltage
- the horizontal axis represents the position of the rotor in the axial direction (the amount of displacement from the reference position, in other words, the amount of deviation of the axial center of the rotor 3 from the axial center of the stator core 21)
- the vertical axis represents the amplitude of the induced voltage.
- the amplitude of the induced voltage VL generated in the position detection coil 5 increases.
- the amplitude of the induced voltage VL generated in the position detection coil 5 becomes small.
- a table in which the position of the rotor 3 in the axial direction and the amplitude of the induced voltage VL are associated for example, a table as shown in FIG. 8 is registered in the controller 32 (see FIG. 5) in advance, the motor The position of the rotor 3 in the axial direction can be easily obtained by acquiring the axial position of the rotor 3 corresponding to the amplitude of the induced voltage generated in the position detecting coil 5 from the table shown in FIG. It becomes possible to detect.
- the position detection coil 5 is arranged on one axial end surface of the stator core 21, and the position detection coil 5 Since the axial position of the rotor 3 is detected based on the generated induced voltage VL, the axial position of the rotor 3 can be easily detected without using a sensor. Moreover, since the space in which the position detection coil 5 is provided is originally an empty space, it is possible to effectively utilize a space that has not been conventionally used.
- the position detection coil 5 is arranged only on one end face in the axial direction of the stator core 21, but in this embodiment, the shaft of the stator core 21 is arranged. Position detection coils 5 and 5 'are provided on both end faces in the direction.
- description of points that are common to the first embodiment will be omitted, and different points will be mainly described.
- the controller 32 holds in advance the relationship between the axial position of the rotor 3 and the voltage difference between the induced voltages VL and VL ′ as shown in FIG.
- the rotor axial position is detected by obtaining the rotor axial position corresponding to the difference between the measured values of the induced voltages VL and VL ′ input from the voltage measuring instrument (not shown) from the table shown in FIG. .
- the position detection coils 5 and 5 ′ are provided on both axial end surfaces of the stator core 32, and these position detection coils are provided. Since the axial position of the rotor 3 is detected based on the voltage difference ⁇ V between the induced voltages generated at 5 and 5 ′, the detection sensitivity of the axial position of the rotor 3 can be increased, and the position detection accuracy can be further improved. It becomes possible to plan.
- the output of the center position is 0 V (zero volt)
- the position of the rotor 3 in the axial direction is detected by providing the position detection coil 5 on one axial end surface of the stator core 21.
- the axial position of the rotor 3 is detected by measuring the induced voltage generated in any one of the U, V, and W phases.
- FIG. 13 is a diagram showing an example of connection of armature windings according to the present embodiment
- FIG. 14 is a cross-sectional view of the motor according to the present embodiment
- FIG. 15 is a BB arrow of the motor shown in FIG. FIG.
- one end portion 55 in the axial direction of the rotor of the first tooth 53 around which a part (upstream side) Up of the U-phase armature winding is wound is nonmagnetic. Consists of body materials. Further, one end portion 56 in the axial direction of the rotor of the second tooth 54 around which a part (downstream side) Ud of the armature winding having the same phase as the armature winding Up wound around the first tooth 53 is wound. It is composed of a non-magnetic material.
- the one end portions 55 and 56 made of a non-magnetic material are asymmetric between the first tooth 53 and the second tooth 54.
- the non-magnetic material include resin, ceramics, aluminum, copper, and the like.
- the induced voltage Vp generated in the armature winding Up wound around the first tooth 53 is measured by the first voltage measuring device 51 and output to the controller.
- the induced voltage Vd generated in the armature winding Ud wound around the second tooth 54 is measured by the second voltage measuring device 52 and output to the controller.
- the controller calculates a voltage difference ⁇ V ′ between the induced voltage Vp and the induced voltage Vd input from the first voltage measuring instrument 51 and the second voltage measuring instrument 52, and based on this voltage difference ⁇ V ′, the axial direction of the rotor 3 is calculated. Detect position.
- the direction in which the nonmagnetic material of the upstream teeth 53 is provided is defined as negative, and the direction in which the nonmagnetic material of the downstream teeth 54 is provided is defined as positive.
- induced voltages Vp and Vd corresponding to the axial position of the rotor 3 are generated in the U-phase armature winding Up and the armature winding Ud.
- the induced voltage generated in the U phase is preferably measured in a period in which both of the switching elements 41 and 42 (see FIG. 6) corresponding to the U phase are off, that is, in the U phase non-energization period, from the viewpoint of measurement accuracy. Therefore, for example, as shown in FIG. 16, the controller inputs from the first voltage measuring instrument 51 and the second voltage measuring instrument 52 when switching the switching elements 41 and 42 corresponding to the U phase from OFF to ON. A voltage difference ⁇ V ′ between the induced voltages Vp and Vd is obtained, and the position of the rotor 3 is detected based on the voltage difference ⁇ V ′.
- the controller previously holds a table in which the voltage difference ⁇ V ′ is associated with the axial position of the rotor 3, and during the motor drive period, Then, the axial position of the rotor 3 is detected by extracting the axial position of the rotor corresponding to the voltage difference ⁇ V ′ from the table.
- the one end portions 55 and 56 of the first tooth 53 and the second tooth 54 are made of a nonmagnetic material, Further, by making the end portion made of the non-magnetic material asymmetric, when the rotor 3 moves in the axial direction, the induced voltage Vp generated in the armature winding Up wound around the first tooth 53 It is possible to make the induced voltage Vd generated in the armature winding Ud wound around the second tooth 54 different.
- the axial position of the rotor 3 can be detected based on the voltage difference ⁇ V ′ between the induced voltage Vp generated in the armature winding Up and the induced voltage Vd generated in the armature winding Ud.
- ⁇ V ′ the voltage difference between the induced voltage Vp generated in the armature winding Up and the induced voltage Vd generated in the armature winding Ud.
- the position of the rotor 3 is detected based on the induced voltage generated in the U phase.
- the rotor is based on the induced voltage generated in the W phase or the V phase.
- the position detection may be performed.
- stator teeth when it had six stator teeth was demonstrated, when it has more stator teeth, ie, when each phase winding is wound around three or more teeth, respectively.
- the non-magnetic material is selected so that the two teeth around which the armature winding of the same phase is wound are selected as the first tooth and the second tooth from among the teeth, and the end portions in the axial direction of the rotor are asymmetric.
- the axial position of the rotor 3 may be detected from the difference between the induced voltages generated in the armature windings wound around the teeth.
- the two teeth arranged opposite to each other across the central axis of the stator are connected to the first teeth. And it is good to select as the 2nd tooth. As a result, the position detection accuracy can be improved.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Electromagnetic Pumps, Or The Like (AREA)
- Details Of Reciprocating Pumps (AREA)
- Brushless Motors (AREA)
Abstract
Description
また、上記態様は、可能な範囲で組み合わせて利用することができるものである。
2 ステータ
3 ロータ
5,5´ 位置検出用コイル
6 鉄心
7 巻線
21 ステータコア
22 ステータティース
23 エアギャップ
24 永久磁石
30 モータの駆動装置
31 直流電源
32 コントローラ
33 スイッチング回路
41~46 スイッチング素子
Up 上流側巻線
Ud 下流側巻線
図1は、本発明の第1の実施形態に係る3相のブラシレスモータ(以下「モータ」という。)の断面図、図2は図1に示したモータ1のA-A矢視断面図、図3は位置検出用コイルの取り付け例を説明するためのモータの概略斜視図である。
図1乃至図3に示されるモータ1は、ステータ2と、ロータ3とを備えている。ステータ2は、薄肉の磁性鋼板を多数積層してなる円筒状のステータコア21の内側に、その周方向に所定の間隔を隔てて設けられた複数のステータティース22を有している。ステータティース22には、Y結線される3相電機子巻線25(図2参照)が巻きつけられている。
次に、本発明の第2の実施形態について、図10を用いて説明する。
上述した第1の実施形態にかかる位置検出方法及びモータの駆動装置においては、位置検出用コイル5をステータコア21の軸方向片側端面にのみ配置していたが、本実施形態では、ステータコア21の軸方向両端面に位置検出用コイル5,5´を設けている。以下、本実施形態の位置検出方法及びモータの駆動装置について、第1の実施形態と共通する点については説明を省略し、異なる点について主に説明する。
次に、本発明の第3の実施形態について、図13を用いて説明する。
上述した第1の実施形態に係るモータの位置検出方法及びモータの駆動装置においては、ステータコア21の軸方向片端面に位置検出用コイル5を設けることでロータ3の軸方向位置検出を行っていたが、本実施形態では、U,V,W相のいずれかの相に発生する誘起電圧を測定することでロータ3の軸方向位置検出を行うこととしている。
Claims (9)
- ロータと複数相の電機子巻線が巻きつけられたステータとを有するモータの位置検出方法であって、
ステータコアの軸方向一端面に位置検出用コイルを配置し、該位置検出用コイルに発生する誘起電圧を検出し、この検出結果に基づいて前記ロータの軸方向の位置を検出するモータの位置検出方法。 - 前記ステータコアの軸方向他端面に前記位置検出用コイルを更に配置し、前記軸方向一端面に配置された前記位置検出用コイルに発生する誘起電圧と、前記軸方向他端面に配置された前記位置検出用コイルに発生する誘起電圧との電圧差に基づいて前記ロータの軸方向の位置を検出する請求項1に記載のモータの位置検出方法。
- 前記ロータの磁極数がNである場合に、前記位置検出用コイルは、前記ステータコアの外周の略N分の1に配置されている請求項1または請求項2に記載のモータの位置検出方法。
- 前記位置検出用コイルは、前記ステータコアに一体的に取り付けられている請求項1から請求項3のいずれかに記載のモータの位置検出方法。
- ロータと、複数相の電機子巻線が巻きつけられたステータとを有するモータの位置検出方法であって、
同相の電機子巻線が巻きつけられている第1ティース及び第2ティースの前記ロータの回転軸方向における一端部をそれぞれ非磁性体材料で構成するとともに、該非磁性体材料で構成される前記一端部が前記第1ティースと前記第2ティースとで非対称とされており、
前記第1ティースに巻きつけられた前記電機子巻線に生ずる誘起電圧と、前記第2ティースに巻きつけられた前記電機子巻線に生ずる誘起電圧との差分に基づいて前記ロータの軸方向の位置を検出するモータの位置検出方法。 - 前記第1ティースと前記第2ティースとは、前記ステータの中心軸を挟んで対向して配置されている請求項5に記載のモータの位置検出方法。
- ロータと、複数相の電機子巻線が巻きつけられたステータとを有するモータの駆動装置であって、
前記ステータのコアの軸方向一端面に配置される位置検出用コイルに発生する誘起電圧を検出し、検出した前記誘起電圧に基づいて前記ロータの軸方向の位置を検出するモータの駆動装置。 - ロータと、複数相の電機子巻線が巻きつけられたステータとを有するモータの駆動装置であって、
同相の電機子巻線が巻きつけられている第1ティース及び第2ティースの前記ロータの回転軸方向における一端部をそれぞれ非磁性体材料で構成するとともに、該非磁性体材料で構成される前記一端部が前記第1ティースと前記第2ティースとで非対称とされており、
前記第1ティースに巻きつけられた前記電機子巻線に生ずる誘起電圧と、前記第2ティースに巻きつけられた前記電機子巻線に生ずる誘起電圧との差分に基づいて前記ロータの軸方向の位置を検出するモータの駆動装置。 - 請求項7または請求項8に記載のモータの駆動装置を備えるポンプ。
Priority Applications (2)
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DE112009000098T DE112009000098T5 (de) | 2008-01-15 | 2009-01-15 | Motorpositionserfassungsverfahren, Motorantriebseinheit und Pumpe |
US12/673,429 US8324852B2 (en) | 2008-01-15 | 2009-01-15 | Motor position detecting method, motor driving unit, and pump |
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JP2008006051A JP5101309B2 (ja) | 2008-01-15 | 2008-01-15 | モータの位置検出方法およびモータの駆動装置並びにポンプ |
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JP (1) | JP5101309B2 (ja) |
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US9300194B2 (en) * | 2011-11-09 | 2016-03-29 | Hamilton Sundstrand Corporation | Electromagnetic device |
KR101923731B1 (ko) | 2012-02-03 | 2018-11-29 | 한국전자통신연구원 | Bldc 모터의 구동 장치 |
DE102018200920A1 (de) * | 2018-01-22 | 2019-07-25 | Robert Bosch Gmbh | Elektromotor |
KR102030063B1 (ko) * | 2018-04-19 | 2019-11-29 | 김병국 | 속도감지회로 일체형 전동기 |
DE102018216722A1 (de) * | 2018-09-28 | 2020-04-02 | Voith Patent Gmbh | Verfahren und Anordnung zur Bestimmung und/oder Regelung eines Betriebszustandes einer elektrischen Maschine |
Citations (3)
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JPH11148819A (ja) * | 1997-11-17 | 1999-06-02 | Nikkiso Co Ltd | モータの軸受摩耗監視装置における軸方向ゼロ点調整方法及びその装置 |
JP2002153018A (ja) * | 2000-11-14 | 2002-05-24 | Teikoku Electric Mfg Co Ltd | モータ軸受の軸方向摩耗検出装置 |
JP2003525561A (ja) * | 1999-04-20 | 2003-08-26 | フォルシュンクスツェントルム ユーリッヒ ゲーエムベーハー | ロータ装置 |
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US4553075A (en) * | 1983-08-04 | 1985-11-12 | Rotron Incorporated | Simple brushless DC fan motor with reversing field |
JPH01308143A (ja) * | 1988-06-03 | 1989-12-12 | Teikoku Denki Seisakusho:Kk | キャンドモータの運転監視装置 |
WO1998011650A1 (de) | 1996-09-10 | 1998-03-19 | Sulzer Electronics Ag | Rotationspumpe und verfahren zum betrieb derselben |
DE69904422T2 (de) * | 1998-09-28 | 2003-12-04 | Victor Company Of Japan, Ltd. | Magnetplattenantriebsvorrichtung |
JP2001236721A (ja) * | 2000-02-22 | 2001-08-31 | Alps Electric Co Ltd | スピンドルモータのインデックス位置検出装置及びそれを備えたモータ装置 |
DE10123138B4 (de) | 2001-04-30 | 2007-09-27 | Berlin Heart Ag | Verfahren zur Lageregelung eines permanentmagnetisch gelagerten rotierenden Bauteils |
DE10121767A1 (de) * | 2001-05-04 | 2002-11-14 | Bosch Gmbh Robert | Elektronisch kommutierte Mehrphasen-Synchronmaschine |
KR20040064698A (ko) * | 2001-12-18 | 2004-07-19 | 가부시키가이샤 데이코쿠 덴키 세이사쿠쇼 | 캔드모터의 축방향 축받이 마모검출장치 |
US6836032B2 (en) * | 2002-11-14 | 2004-12-28 | Levram Medical Systems, Ltd. | Electromagnetic moving-coil device |
DE102004046824B4 (de) | 2004-09-27 | 2016-06-16 | Siemens Aktiengesellschaft | Geschwindigkeitsmessung bei einer elektrischen permanenterregten Synchronmaschine |
JP4135748B2 (ja) * | 2006-04-27 | 2008-08-20 | 国産電機株式会社 | エンジン制御装置 |
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2008
- 2008-01-15 JP JP2008006051A patent/JP5101309B2/ja active Active
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2009
- 2009-01-15 US US12/673,429 patent/US8324852B2/en active Active
- 2009-01-15 DE DE112009000098T patent/DE112009000098T5/de active Pending
- 2009-01-15 WO PCT/JP2009/050436 patent/WO2009090986A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH11148819A (ja) * | 1997-11-17 | 1999-06-02 | Nikkiso Co Ltd | モータの軸受摩耗監視装置における軸方向ゼロ点調整方法及びその装置 |
JP2003525561A (ja) * | 1999-04-20 | 2003-08-26 | フォルシュンクスツェントルム ユーリッヒ ゲーエムベーハー | ロータ装置 |
JP2002153018A (ja) * | 2000-11-14 | 2002-05-24 | Teikoku Electric Mfg Co Ltd | モータ軸受の軸方向摩耗検出装置 |
Also Published As
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JP5101309B2 (ja) | 2012-12-19 |
US20110175561A1 (en) | 2011-07-21 |
US8324852B2 (en) | 2012-12-04 |
DE112009000098T5 (de) | 2010-11-04 |
JP2009171718A (ja) | 2009-07-30 |
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