EP1388203A1 - Electronically commutated multi-phase synchronous machine - Google Patents

Electronically commutated multi-phase synchronous machine

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Publication number
EP1388203A1
EP1388203A1 EP02729798A EP02729798A EP1388203A1 EP 1388203 A1 EP1388203 A1 EP 1388203A1 EP 02729798 A EP02729798 A EP 02729798A EP 02729798 A EP02729798 A EP 02729798A EP 1388203 A1 EP1388203 A1 EP 1388203A1
Authority
EP
European Patent Office
Prior art keywords
winding
synchronous machine
auxiliary
stator
rotor
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Withdrawn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
EP02729798A
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German (de)
French (fr)
Inventor
Harald Witzig
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1388203A1 publication Critical patent/EP1388203A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention is based on an electronically commutated multi-phase synchronous machine according to the preamble of claim 1.
  • the circuit device for operating the synchronous motor has three power transistors designed as MOS-FETs, each of which is connected in series with a winding phase of the stator winding, the drains of which are connected to the respectively associated winding phase and the sources thereof via a common resistance at the lower potential or the ground potential of the DC network.
  • the switching signals generated by the commutation device are applied to the gates of the LED MOSFETs, namely after Difference formation with a reference voltage taken from the resistor.
  • three position sensors are provided, which generate output signals corresponding to the rotational position of the rotor or rotor, which are integrated in a gate circuit
  • Three-phase signal can be electrically transformed with a 120 ° pitch without overlap.
  • the three-phase signal is fed to the commutation device, which generates the switching signals mentioned, which are each composed of a sequence of periodic square-wave pulses, for the power transistors.
  • the electronically commutated multi-phase synchronous machine according to the invention with the features of claim 1 has the advantage of sensorless detection of the rotor rotation position, which is very attractive from a cost point of view.
  • the evaluation of the voltage induced in the at least one auxiliary winding in order to obtain information about the rotor rotational position is possible in a simple manner with little circuit complexity.
  • auxiliary winding is assigned to each winding phase, so that the switching signals for each winding phase of the stator winding with the rotor rotating position be synchronized, so in a three-phase synchronous machine synchronization takes place during each rotation of the rotor by 120 ° electrically.
  • a zero crossing detector is assigned to each auxiliary winding, which detects the exceeding and falling below a reference potential by the voltage induced in each auxiliary winding and outputs it as a rotor rotation position signal.
  • the reference potential is preferably ground, but can also be set in a defined manner with a reference voltage source.
  • each auxiliary winding is made from a winding wire with a small wire cross section.
  • the auxiliary windings take up little winding space in the stator.
  • Wire cross-section or wire diameter is possible because only minimal currents flow in the auxiliary windings.
  • the auxiliary windings are wound with the greatest possible number of bonds, as a result of which the amplitude of the induced voltages increases and these can be better evaluated.
  • 1 is a block diagram of an electronically commutated three-phase synchronous motor
  • Fig. 2 is a block diagram of the
  • ⁇ Fig. 3 is a diagram of various signals in the
  • the electronically commutated three-phase synchronous motor hereinafter referred to as EC motor 12, operated as an exemplary embodiment of a general electronically commutated multiphase synchronous machine, which is operated in FIG stator 14 5 'with a star-connected stator winding 15, whose three .Wicklungsphasen 151, 152 and 153 to' electrically mutually offset 120 ° on the circumference of the stator 14 are arranged.
  • the switching device 10 has a total of six power transistors Tl-T6 designed as MOS-FET 0
  • Embodiment of general semiconductor switch on of which each have two power transistors Tl, T2 or T3, T4 or T5, T ⁇ connected in series. Their common connection point is in each case placed on one of the winding connections of the stator winding 15.
  • the three series connections of the power transistors Tl-T6 are connected in parallel, the parallel connection is connected to the DC voltage network 11, and a capacitor 16 is connected in parallel with the parallel connection.
  • the power transistors Tl-T6 are triggered by a commutation device 17, the switching signals generated by the commutation device 17 being applied to the control inputs of the power transistors Tl-T6, that is to say to the gates of the OS-FETs.
  • the switching signals are formed by the commutation device 17 as a function of rotor rotational position signals, which provide information about the current rotational position of the rotor 13 of the EC motor 12.
  • auxiliary windings 181, 182 and 183 are arranged in the stator 14 of the EC motor 12.
  • An auxiliary winding 181-183 is assigned to one of the winding phases 151-153 of the stator winding 15 and is inductively coupled to it.
  • the one winding ends of the auxiliary windings 181 - 183 are placed on a common star point 19 and the others
  • auxiliary windings 181-183 Winding ends of the auxiliary windings 181-183 are guided to the commutation device 17. The star point 19 is also led out to the commutation device 17.
  • Each auxiliary winding 181 - 183 is made of a winding wire with a small wire cross section, so that it takes up little space in the stator 14.
  • Each auxiliary winding 181-183 is included as large a number of turns as possible in order to increase the amplitude of the voltage induced in the auxiliary windings 181-183.
  • the rotor rotation position signals are derived from the induced voltages of the auxiliary windings 181 ′ - 183, and the switching signals for the.
  • Power transistors Tl - T6 formed.
  • the commutation device 17 is shown in more detail in FIG. 2 in the block diagram.
  • the auxiliary windings " 181, 182, 183 and the star point 19 are connected to the inputs 1, 2, 3 and S of the commutation device 17.
  • the one of two inputs is provided by three zero crossing detectors 211, - 212 and 213, the other input of which is assigned a reference potential, for example ground potential, to which reference star 19 of auxiliary windings 181-183 is also connected via input S.
  • this fixed reference potential can also be obtained from a reference voltage source 20 which is shown in 2 is shown in dashed lines, in each zero crossing detector 211-213 assigned to an auxiliary winding 181-183 the exceeding and falling below the reference potential is detected by the voltage induced in the associated auxiliary winding 181-183 and at the output of the zero crossing detector 211-213 each output as a rotor rotation position signal
  • Rotor rotary position signals are fed to a trigger pulse generator 22, in which the trigger pulses are synchronized with the rotor rotary position signals, so that the outputs 1-6 of the commutation device 17 individual switching signals for the power transistors Tl - T6 occur logically.
  • the switching signal generation in the commutation device 17 is shown in the diagrams in FIG. 3.
  • Diagram a shows the voltages induced in auxiliary windings 151-153 at inputs 1, 2 and 3 of commutation device 17, diagram b shows the rotor rotation position signals generated by zero-crossing detectors 211-213 and diagram c shows the outputs 1- 6 of the commutation device 17 removable switching signals for the power transistors Tl-16, each by a rotation of the rotor 13 of ' 360 ° electrical. , " .
  • the full or divided mains voltage of the DC voltage network 11 can also be used as the reference potential for the zero crossing detectors.
  • the execution of the stator winding of the synchronous machine is not limited to three winding phases.

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

Abstract

The invention relates to an electronically commutated multi-phase synchronous machine comprising a rotor (13) and a stator (14) that supports a stator winding (15). Said stator comprises a switching device (10) consisting of a number of semiconductor switches (T1 - T6), which are assigned to the individual winding phases (151 - 153) of the stator winding (15) and which are provided for connecting the stator winding (15) to a d.c. mains (11), and comprises a commutating device (17) for sequentially controlling the semiconductor switches (T1 - T6) with switching signals that are derived from rotor rotational position signals. Auxiliary windings (181 - 183) are arranged inside the stator (14) in order to detect the rotational position of the rotor without the use of sensors. Said auxiliary windings are each inductively coupled to a winding phase (151 - 153), whereby the rotor rotational position signals are derived from the voltages induced in the auxiliary windings (181 - 183).

Description

Elektronisch kommutierte Mehrphasen-SynchronmaschineElectronically commutated multi-phase synchronous machine
Stand der TechnikState of the art
Die Erfindung geht aus von einer elektronisch kommutierten Mehrphasen-Synchronmaschine nach dem Oberbegriff des Anspruchs 1.The invention is based on an electronically commutated multi-phase synchronous machine according to the preamble of claim 1.
Bei einem bekannten Dreiphasen-Synchronmotor, auch EC-Motor genannt, (DE 40 40 926 Cl) ist die Statorwicklung inIn a known three-phase synchronous motor, also called an EC motor (DE 40 40 926 Cl), the stator winding is in
Sternschaltung ausgeführt, deren Sternpunkt an das positive Potential des Gleichspannungsnetzes angeschlossen ist . Die Schaltungsvorrichtung zum Betreiben des Synchronmotors weist drei als MOS-FET ausgebildete Leistungstransistoren auf, die jeweils in Reihe mit einer Wicklungsphase der Statorwicklung liegen, wobei deren Drains an der jeweils zugeordneten Wicklungsphase und deren Sources über einen gemeinsamen Widerstand an dem unteren Potential bzw. dem Massepotential des Gleichspannungsnetzes liegen. An den Gates der Ledstungs- MOS-FETs werden die von der Kommutierungsvorrichtung erzeugten Schaltsignale gelegt, und zwar nach Differenzbildung mit einer am Widerstand abgenommenen Referenzspannung. Zur Rotorstellungsabfrage sind drei Positionssensoren vorgesehen, die entsprechend der Drehstellung des Rotors oder Läufers Ausgangssignale erzeugen, die in einer Gatterschaltung in einStar connection implemented, the star point of which is connected to the positive potential of the DC voltage network. The circuit device for operating the synchronous motor has three power transistors designed as MOS-FETs, each of which is connected in series with a winding phase of the stator winding, the drains of which are connected to the respectively associated winding phase and the sources thereof via a common resistance at the lower potential or the ground potential of the DC network. The switching signals generated by the commutation device are applied to the gates of the LED MOSFETs, namely after Difference formation with a reference voltage taken from the resistor. For position detection, three position sensors are provided, which generate output signals corresponding to the rotational position of the rotor or rotor, which are integrated in a gate circuit
Dreiphasensignal ohne Überlappung mit einer Teilung von 120° elektrisch umgeformt werden. Das Dreiphasensignal wird der Kommutierungsvorrichtung zugeführt, die die angesprochenen Schaltsignale, die jeweils aus einer Folge von periodischen Rechteckimpulsen zusammengesetzt sind, für die Leistungstransistoren generiert.Three-phase signal can be electrically transformed with a 120 ° pitch without overlap. The three-phase signal is fed to the commutation device, which generates the switching signals mentioned, which are each composed of a sequence of periodic square-wave pulses, for the power transistors.
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße elektronisch kommutierte- Mehrphasen- Synchronmaschine mit den Merkmalen des Anspruchs 1 hat den Vorteil einer sensorlosen Erfassung der Rotordrehstellung, die unter Kostengesichtspunkten sehr attraktiv ist. Die Auswertung der in der mindestens einen Hilfswicklung induzierten Spannung zur Erlangung einer Information über die Rotordrehlage ist mit wenig Schaltungsaufwand in einfacher Weise möglich.The electronically commutated multi-phase synchronous machine according to the invention with the features of claim 1 has the advantage of sensorless detection of the rotor rotation position, which is very attractive from a cost point of view. The evaluation of the voltage induced in the at least one auxiliary winding in order to obtain information about the rotor rotational position is possible in a simple manner with little circuit complexity.
Die Einbringung von nur einer Hilfswicklung in den Stator, und zwar in Zuordnung zu einer Wicklungsphase, liefert nur eine Rotordrehstellungsinformation pro elektrischer Umdrehung der Synchronmaschine, was aber für Antriebe mit geringen Dynamikanforderungen oftmals ausreichend ist. Für eine höhere Dynamikanforderung wird jeder Wicklungsphase eine Hilfswicklung zugeordnet, so daß die Ξchaltsignale fü jede Wicklungsphase der Statorwicklung mit der Rotordrehstellung synchronisiert werden, bei einer Dreiphasen-Synchronmaschine also eine Synchronisation während jeder Verdrehung des Rotors um 120° elektrisch erfolgt.The introduction of only one auxiliary winding into the stator, and that in association with a winding phase, provides only one rotor position information per electrical revolution of the synchronous machine, but this is often sufficient for drives with low dynamic requirements. For a higher dynamic requirement, an auxiliary winding is assigned to each winding phase, so that the switching signals for each winding phase of the stator winding with the rotor rotating position be synchronized, so in a three-phase synchronous machine synchronization takes place during each rotation of the rotor by 120 ° electrically.
Durch die in den 'weiteren. Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Anspruch 1 angegebenen Synchronmaschine möglich.Through the in the ' further. Measures listed claims advantageous refinements and improvements of the synchronous machine specified in claim 1 are possible.
Gemäß einer vorteilhaften Ausführungsform der Erfindung ist ' jeder Hilfswicklung ein Nulldurchgangsdetektor zugeordnet, der das Über- und Unterschreiten eines Bezugspotentials durch die in jeder Hilfswicklung induzierte Spannung erfaßt und als Rotordrehstellungssignal ausgibt. Das Bezugspotential ist vorzugsweise Masse kann aber auch mit einer - Referenzspannungsquelle definiert eingestellt werden.According to an advantageous embodiment of the invention, a zero crossing detector is assigned to each auxiliary winding, which detects the exceeding and falling below a reference potential by the voltage induced in each auxiliary winding and outputs it as a rotor rotation position signal. The reference potential is preferably ground, but can also be set in a defined manner with a reference voltage source.
Gemäß einer vorteilhaften Ausführungsform der Erfindung ist jede Hilfswicklung aus einem Wicklungsdraht mit kleinem Drahtquerschnitt gefertigt. Dadurch beanspruchen die Hilfswicklungen nur wenig Wickelraum im Stator. Der kleineAccording to an advantageous embodiment of the invention, each auxiliary winding is made from a winding wire with a small wire cross section. As a result, the auxiliary windings take up little winding space in the stator. The small
Drahtquerschnitt oder Drahtdurchmesser ist möglich, da in den Hilfswicklungen nur minimale Ströme fließen.Wire cross-section or wire diameter is possible because only minimal currents flow in the auxiliary windings.
Gemäß einer vorteilhaften Ausführungsform der Erfindung werden die Hilfswicklungen mit einer möglichst großen lindungszahl gewickelt, wodurch sich die Amplitude der induzierten Spannungen erhöht und diese besser ausgewertet werden können . ZeichnungAccording to an advantageous embodiment of the invention, the auxiliary windings are wound with the greatest possible number of bonds, as a result of which the amplitude of the induced voltages increases and these can be better evaluated. drawing
Die Erfindung ist anhand eines in der Zeichnung dargestellten Ausführungsbeispiels in der nachfolgenden Beschreibung näher 5. erläutert. Es zeigen:The invention is explained in more detail in the following description using an exemplary embodiment shown in the drawing. Show it:
Fig. 1 ein Blockschaltbild eines elektronisch kommutierten Dreiphaseri-Synchronmotors,1 is a block diagram of an electronically commutated three-phase synchronous motor,
0 Fig. 2 ein Blockschaltbild der0 Fig. 2 is a block diagram of the
Kommutierungsvorrichtung in Fig. 1,Commutation device in Fig. 1,
■ Fig. 3 ein Diagramm verschiedener Signale in der ■ Fig. 3 is a diagram of various signals in the
Kommutierungsvorrichtung der Synchronmaschine 5 • gemäß Fig..1.Commutation device of the synchronous machine 5 • according to Fig.1.
Beschreibung des AusführungsbeispielsDescription of the embodiment
Der in Fig. 1 in Verbindung mit einer Schaltungsvorrichtung 0 10 an einem Gleichspannungsnetz 11 betriebene, elektronisch kommutierte Dreiphasen-Synchronmotor, im folgenden kurz EC- Motor 12 genannt, als Ausführungsbeispiel einer allgemeinen elektronisch kommutierten Mehrphasen-Synchronmaschine, weist einen permanentmagneterregten Rotor 13 und einen Stator 14 5 ' mit einer in Stern geschalteten Statorwicklung 15 auf, deren drei .Wicklungsphasen 151, 152 und 153 um '120° elektrisch zueinander am Umfang des Stators 14 versetzt angeordnet sind.The electronically commutated three-phase synchronous motor, hereinafter referred to as EC motor 12, operated as an exemplary embodiment of a general electronically commutated multiphase synchronous machine, which is operated in FIG stator 14 5 'with a star-connected stator winding 15, whose three .Wicklungsphasen 151, 152 and 153 to' electrically mutually offset 120 ° on the circumference of the stator 14 are arranged.
Die Schaltvorrichtung 10 weist insgesamt sechs als MOS-FET 0 ausgebildete Leistungstransistoren Tl - T6 alsThe switching device 10 has a total of six power transistors Tl-T6 designed as MOS-FET 0
Ausführungsbeispiel allgemeiner Halbleiterschalter auf, von denen jeweils, zwei Leistungstransistoren Tl, T2 bzw. T3, T4 bzw. T5, Tβ in Reihe geschaltet sind. Ihr gemeinsamer Verbindungspunkt ist jeweils auf einen der Wicklungsanschlüsse der Statorwicklung 15 gelegt. Die drei Reihenschaltungen der Leistungstransistoren Tl - T6 sind parallelgeschaltet, die Parallelschaltung ist an das Gleichspannungsnetz 11 angeschlossen, und der Parallelschaltung ist ein Kondensator 16 parallelgeschaltet. Die Leistungstransistoren Tl - T6 werden von einer Kommutierungsvorrichtung 17 getriggert, wobei die von der Kommutierungsvorrichtung 17 erzeugten Schaltsignale an die Steuereingänge der Leistungstransitoren Tl - T6, also an die Gates der OS-FETs, gelegt sind. Die Schaltsignale werden von der Kommutierungsvorrichtung 17 in Abhängigkeit von Rotordrehstellungssignalen gebildet, die Informationen über die momentane Drehstellung des Rotors 13 des EC-Motors 12 liefern.Embodiment of general semiconductor switch on, of which each have two power transistors Tl, T2 or T3, T4 or T5, Tβ connected in series. Their common connection point is in each case placed on one of the winding connections of the stator winding 15. The three series connections of the power transistors Tl-T6 are connected in parallel, the parallel connection is connected to the DC voltage network 11, and a capacitor 16 is connected in parallel with the parallel connection. The power transistors Tl-T6 are triggered by a commutation device 17, the switching signals generated by the commutation device 17 being applied to the control inputs of the power transistors Tl-T6, that is to say to the gates of the OS-FETs. The switching signals are formed by the commutation device 17 as a function of rotor rotational position signals, which provide information about the current rotational position of the rotor 13 of the EC motor 12.
Zur Gewinnung der Rotordrehstellungssignale sind im Stator 14 des EC-Motors 12 drei Hilfswicklungen 181, 182 und 183 angeordnet. Jeweils eine Hilfswicklung 181 - 183 ist einer der Wicklungsphasen 151 - 153 der Statorwicklung 15 zugeordnet und mit dieser induktiv gekoppelt. Die einen Wicklungsenden der Hilfswicklungen 181 - 183 sind auf einen gemeinsamen Sternpunkt 19 gelegt und die anderenTo obtain the rotor rotational position signals, three auxiliary windings 181, 182 and 183 are arranged in the stator 14 of the EC motor 12. An auxiliary winding 181-183 is assigned to one of the winding phases 151-153 of the stator winding 15 and is inductively coupled to it. The one winding ends of the auxiliary windings 181 - 183 are placed on a common star point 19 and the others
Wicklungsenden der Hilfswicklungen 181 - 183 sind zu der Kommutierungsvorrichtung 17 geführt. Auch der Sternpunkt 19 ist zu der Kommutierungsvorrichtung 17 herausgeführt. Jede Hilfswicklung 181 - 183 ist aus einem Wickeldraht mit kleinem Drahtquerschnitt gefertigt, so daß sie im Stator 14 wenig Bauraum beansprucht. Jede Hilfswicklung 181 - 183 ist mit einer möglichst großen Windungszahl ausgeführt, um die Amplitude der in den Hilfswicklung 181 - 183 induzierten Spannung zu erhöhen. Aus den induzierten Spannungen der Hilfswicklungen 181 '- 183 werden in der Kommutierungsvorrichtung 17 die Rotordrehstellungssignale abgeleitet, und mit den Rotordrehstellungssignalen werden die Schaltsignale für die. Leistungstransitoren Tl - T6 gebildet.Winding ends of the auxiliary windings 181-183 are guided to the commutation device 17. The star point 19 is also led out to the commutation device 17. Each auxiliary winding 181 - 183 is made of a winding wire with a small wire cross section, so that it takes up little space in the stator 14. Each auxiliary winding 181-183 is included as large a number of turns as possible in order to increase the amplitude of the voltage induced in the auxiliary windings 181-183. In the commutation device 17, the rotor rotation position signals are derived from the induced voltages of the auxiliary windings 181 ′ - 183, and the switching signals for the. Power transistors Tl - T6 formed.
Die Kommutierungsvorrichtung 17 ist in Fig. 2 im Blockschaltbild detaillierter dargestellt. An den Eingängen 1, 2, 3 und S der Kommutierungsvorrichtung 17 sind die Hilfswicklungen "181, 182, 183 und der Sternpunkt 19 angeschlossen. Mit je einem der Eingängen 1, 2 und 3 ist der eine von zwei Eingängen von drei Nulldurchgangsdetektoren 211,- 212 und 213 verbunden, deren anderer Eingang mit einem Bezugspotential, z.B. Massepotential, belegt ist. An dieses Bezugspotential ist über den Eingang S auch der Sternpunkt 19 der Hilfswicklungen 181 - 183 angeschlossen. Alternativ kann dieses feste Bezugspotential auch von einer Referenzspannungsquelle 20, die in Fig. 2 strichliniert dargestellt ist, abgegriffen werden. In jedem einer Hilfswicklung 181 - 183 zugeordneten Nulldurchgangsdetektor 211 - 213 wird das Über- und Unterschreiten des Bezugspotentials durch die in der zugeordneten Hilfswicklung 181 - 183 induzierte Spannung detektiert und am Ausgang des Nulldurchgangsdetektors 211 - 213 jeweils als Rotordrehstellungssignal ausgegeben. DieThe commutation device 17 is shown in more detail in FIG. 2 in the block diagram. The auxiliary windings " 181, 182, 183 and the star point 19 are connected to the inputs 1, 2, 3 and S of the commutation device 17. With each of the inputs 1, 2 and 3, the one of two inputs is provided by three zero crossing detectors 211, - 212 and 213, the other input of which is assigned a reference potential, for example ground potential, to which reference star 19 of auxiliary windings 181-183 is also connected via input S. Alternatively, this fixed reference potential can also be obtained from a reference voltage source 20 which is shown in 2 is shown in dashed lines, in each zero crossing detector 211-213 assigned to an auxiliary winding 181-183 the exceeding and falling below the reference potential is detected by the voltage induced in the associated auxiliary winding 181-183 and at the output of the zero crossing detector 211-213 each output as a rotor rotation position signal
Rotordrehstellungssignale sind einem Triggerimpulsgenerator 22 zugeführt, in dem die Triggerimpulse mit den Rotordrehstellungssignalen synchronisiert werden, so daß an den Ausgängen 1 - 6 der Kommutierungsvorrichtung 17 die einzelnen Schaltsignale für die Leistungstransistoren Tl - T6 folgerichtig auftreten. Die Schaltsignalerzeugung in der Kommutierungsvorrichtung 17 ist in den Diagrammen der Fig. 3 dargestellt. Dabei zeigt das Diagramm a die in den Hilfswicklungen 151 - 153 induzierten, an den Eingängen 1, 2 und 3 der Kommutierungsvorrichtung 17 liegenden Spannungen, das Diagramm b die von den Nulldurchgangsdetektoren 211 - 213 erzeugten Rotordrehstellungssignale und das Diagramm c die an den Ausgängen 1 - 6 der Kommutierungsvorrichtung 17 abnehmbaren Schaltsignale für die Leistungstransistoren Tl - 16, jeweils über eine Drehung des Rotors 13 von' 360° elektrisch. ." .Rotor rotary position signals are fed to a trigger pulse generator 22, in which the trigger pulses are synchronized with the rotor rotary position signals, so that the outputs 1-6 of the commutation device 17 individual switching signals for the power transistors Tl - T6 occur logically. The switching signal generation in the commutation device 17 is shown in the diagrams in FIG. 3. Diagram a shows the voltages induced in auxiliary windings 151-153 at inputs 1, 2 and 3 of commutation device 17, diagram b shows the rotor rotation position signals generated by zero-crossing detectors 211-213 and diagram c shows the outputs 1- 6 of the commutation device 17 removable switching signals for the power transistors Tl-16, each by a rotation of the rotor 13 of ' 360 ° electrical. , " .
Die Erfindung ist nicht auf das vorstehend beschriebene Ausführungsbeispiel eines elektronisch kommutiertenThe invention is not based on the embodiment of an electronically commutated described above
Dreiphasen-Synchronmotors beschränkt. So kann im Stator nur eine einzige Hilfswicklung vorgesehen werden, die mit nur einer Wicklungsphase induktiv gekoppelt ist. -Damit wird pro elektrischer Umdrehung nur eine Rotordrehstellungsinfor ation erhalten, was aber für Antriebe mit geringenThree-phase synchronous motor limited. Thus, only a single auxiliary winding can be provided in the stator, which is inductively coupled with only one winding phase. -This means that only one rotor position information is received per electrical revolution, but this is true for drives with low
Dynamikanforderungen oftmals ausreichend ist. Als Bezugspotential für die Nulldurchgangsdetektoren kann auch die volle oder geteilte Netzspannung des Gleichspannungsnetzes 11 verwendet werden. Auch ist die Ausführung der Statorwicklung der Synchronmaschine nicht auf drei Wicklungsphasen beschränkt. Dynamic requirements are often sufficient. The full or divided mains voltage of the DC voltage network 11 can also be used as the reference potential for the zero crossing detectors. The execution of the stator winding of the synchronous machine is not limited to three winding phases.

Claims

Ansprüche Expectations
1. Elektronisch kommutierte Mehrphasen-Synchronmaschine mit einem Rotor (13) und einem Stator (14), der eine aus mehreren Wicklungsphasen (151 - 153) bestehende Statorwicklung (15) aufweist, mit einer Schaltvorrichtung (10) zum Anschließen der Statorwicklung (15) an ein Gleichspannungsnetz (11), -die eine Mehrzahl von den einzelnen Wicklungsphasen (151 - 153) zugeordneten Halbleiterschaltern (Tl - T6) aufweist, und mit einer Kommutierungsvorrichtung (17) zum folgerichtigen Ansteuern der Halbleiterschalter (Tl - T6) mit Schaltsignalen, die abhängig von die1. Electronically commutated multi-phase synchronous machine with a rotor (13) and a stator (14), which has a stator winding (15) consisting of several winding phases (151-153), with a switching device (10) for connecting the stator winding (15) to a DC voltage network (11), which has a plurality of semiconductor switches (Tl-T6) assigned to the individual winding phases (151-153), and with a commutation device (17) for the consequent control of the semiconductor switches (Tl-T6) with switching signals which depending on the
Rotordrehstellung angebenden Rotordrehstellungssignalen gebildet sind, dadurch gekennzeichnet, daß im Stator (14) mindestens eine mit einer Wicklungsphase induktiv gekoppelte Hilfswicklung angeordnet ist und daß die Rotordrehstellungssignale aus einer in der mindestens einen Hilfswicklung induzierten Spannung abgeleitet sind.Rotor rotary position signals indicating rotor rotary position are formed, characterized in that at least one auxiliary winding inductively coupled to a winding phase is arranged in the stator (14) and that the rotor rotary position signals are derived from a voltage induced in the at least one auxiliary winding.
2. Synchronmaschine nach Anspruch 1, dadurch gekennzeichnet, daß jeder Wicklungsphase (151 - 153) eine Hilfswicklung (181 - 183) zugeordnet ist und daß die einen, Enden der Hilfswicklungen (181 - 183) auf einen Sternpunkt (19) gelegt sind und zwischen den anderen Enden der Hilfswicklungen (181 - 183) und dem Sternpunkt (19) die in jeder Hilfswicklung (181 - 183) induzierte Spannung abgenommen ist.2. Synchronous machine according to claim 1, characterized in that each winding phase (151 - 153) is associated with an auxiliary winding (181 - 183) and that one end of the auxiliary windings (181-183) is placed on a star point (19) and between the other ends of the auxiliary windings (181-183) and the star point (19) the voltage induced in each auxiliary winding (181-183) is reduced ,
3. Synchronmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß jeder Hilfswicklung (181 - 183) ein Nulldurchgangsdetektor (211 - 213) zugeordnet ist, der das Über- und Unterschreiten eines Bezugspotentials durch die in der Hilfswicklung (181 - 183) induzierte Spannung detektiert und jeweils als Rotordrehstellungssignal ausgibt .3. Synchronous machine according to claim 1 or 2, characterized in that each auxiliary winding (181 - 183) is associated with a zero crossing detector (211 - 213) which exceeds or falls below a reference potential by the voltage induced in the auxiliary winding (181 - 183) detected and output as a rotor position signal.
4. Synchronmaschine nach Anspruch 3, dadurch gekennzeichnet, daß der Sternpunkt (19) der Hilfswicklungen (181 - 183) auf das Bezugspotential gelegt ist.4. Synchronous machine according to claim 3, characterized in that the star point (19) of the auxiliary windings (181 - 183) is set to the reference potential.
5. Synchronmaschine nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß das Bezugspotential vom Pluspol oder Massepol des Gleichspannungsnetzes (11) abgenommen ist.5. Synchronous machine according to claim 3 or 4, characterized in that the reference potential from the positive pole or ground pole of the DC voltage network (11) is removed.
6. Synchronmaschine nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß das Bezugspotential von einer6. Synchronous machine according to claim 3 or 4, characterized in that the reference potential of one
Referenzspannungsquelle (20) abgegriffen ist.Reference voltage source (20) is tapped.
7. Synchronmaschine nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, daß jede Hilfswicklung (181 - 183) aus einem Wicklungsdraht mit kleinem Drahtquerschnitt gefertigt ist. Synchronmaschine nach einem der Ansprüche 1 - 7, dadurch gekennzeichnet, daß jede Hilfswicklung (181 - 183) mit einer möglichst großen Wicklungszahl ausgeführt ist. 7. Synchronous machine according to one of claims 1-6, characterized in that each auxiliary winding (181 - 183) is made from a winding wire with a small wire cross-section. Synchronous machine according to one of claims 1-7, characterized in that each auxiliary winding (181-183) is designed with the largest possible number of windings.
EP02729798A 2001-05-04 2002-03-16 Electronically commutated multi-phase synchronous machine Withdrawn EP1388203A1 (en)

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DE10121767 2001-05-04
DE10121767A DE10121767A1 (en) 2001-05-04 2001-05-04 Electronically commutated multi-phase synchronous machine
PCT/DE2002/000969 WO2002091557A1 (en) 2001-05-04 2002-03-16 Electronically commutated multi-phase synchronous machine

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DE10121767A1 (en) 2002-11-14
US20030155884A1 (en) 2003-08-21
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WO2002091557A1 (en) 2002-11-14
JP2004519996A (en) 2004-07-02

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