DE19615095C1 - Flux regulation method for parallel asynchronous motors e.g. for rail-bound vehicles - Google Patents

Flux regulation method for parallel asynchronous motors e.g. for rail-bound vehicles

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Publication number
DE19615095C1
DE19615095C1 DE19615095A DE19615095A DE19615095C1 DE 19615095 C1 DE19615095 C1 DE 19615095C1 DE 19615095 A DE19615095 A DE 19615095A DE 19615095 A DE19615095 A DE 19615095A DE 19615095 C1 DE19615095 C1 DE 19615095C1
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Prior art keywords
torque
flux
setpoint
flow
rail
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DE19615095A
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German (de)
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Martin Dipl Ing Riese
Peter Dipl Ing Rieger
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Technische Universitaet Dresden
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Technische Universitaet Dresden
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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
    • H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
    • H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/02—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit
    • B60L15/025—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit using field orientation; Vector control; Direct Torque Control [DTC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L9/00—Electric propulsion with power supply external to the vehicle
    • B60L9/16—Electric propulsion with power supply external to the vehicle using ac induction motors
    • B60L9/24—Electric propulsion with power supply external to the vehicle using ac induction motors fed from ac supply lines
    • B60L9/28—Electric propulsion with power supply external to the vehicle using ac induction motors fed from ac supply lines polyphase motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Abstract

The flux regulation method has a required flux value (4) formed in dependence on the required torque value (2) provided by a rev regulator (1), or the actual calculated torque of the motor group, so that the ratio of the required or calculated torque to the required flux corresponds to the ratio of the measured torque and measured flux. The required torque and required flux are both supplied to a regulation control (5) for the parallel motor group (6) operated in the partial load range.

Description

Die Erfindung betrifft ein Verfahren zur drehmomentabhängigen Flußsollwertführung im Teillastbereich für eine Gruppe von parallel geschalteten Drehstrom-Asynchronmotoren, die von einem Umrichter gespeist werden, insbesondere von schienengeführten Fahrzeugen.The invention relates to a method for torque-dependent Flow setpoint control in the partial load range for a group of three-phase asynchronous motors connected in parallel by a converter, especially from rail-guided vehicles.

Die Parallelschaltung von Drehstrom-Asynchronmotoren an einem Wechselrichter ist möglich, wenn die Drehzahlen aller Motoren gleich sind, was bei einer starren Kopplung der Fall ist, oder nur unwesentlich, d. h. um deutlich weniger als den Bemessungsschlupf, differieren. Letzteres gilt z. B. für Lüfter, Pumpen etc. aber auch für Traktionsantriebe, insbesondere für schienengeführte Fahrzeuge. Typischerweise werden solche Mehrmotorenantriebe mit dem Verfahren der U/f-Steuerung betrieben. Das Ziel dieses Verfahrens liegt darin, den Gesamtfluß bis zum Bemessungspunkt konstant zu halten. Anstelle der U/f-Steuerung ist jedoch auch eine feldorientierte Regelung eines Mehrmotorenantriebes möglich. Die feldorientierte Regelung entspricht dem Stand der Technik und ist in verschiedenen Koordinationssystemen und Regelverfahren möglich (rotorfeldorientierte Regelung - Blaschke, F.; "Das Prinzip der Feldorientierung, die Grundlage für die Transvector-Regelung von Drehfeldmaschinen". Siemens-Z. 4f (1971), S. 757-760, direkte Selbstregelung - Depenbrock, M.; "Direkte Selbstregelung (DSR) für hochdynamische Drehfeldantriebe mit Stromrichterspeisung" Etz Archiv BD 7 (1985), H. 7, S. 211-218, Direct Torque Control - Pekka Tiitinen Msc, Pasi Pohjalainen Msc, Jarkko Lalu Msc; "The Next Generation Motor Control Method, Direct Torque Control (DTC)", EPE Journal Vol. 5 no. 1 March 1995). Dadurch ist es möglich, Fluß und Moment der Maschine auch im dynamischen Zustand unabhängig voneinander regeln zu können. Üblicherweise wird, um ein gutes Regelverhalten und eine gute Dynamik zu erreichen, der Fluß (Ständer- bzw. Rotorfluß) auch im Teillastbereich auf seinem Bemessungswert gehalten.The parallel connection of three-phase asynchronous motors on one Inverter is possible if the speed of all motors are the same as what is the case with a rigid coupling, or only insignificant, d. H. by significantly less than that Design slip, differ. The latter applies e.g. B. for Fans, pumps etc. but also for traction drives, especially for rail-guided vehicles. Typically, such multi-motor drives with the U / f control method operated. The goal of this The procedure is to measure the total flow to the design point to keep constant. Instead of V / f control is also a field-oriented control of a multi-motor drive possible. The field-oriented regulation corresponds to the state of the Technology and is in different coordination systems and Control procedure possible (rotor field-oriented control - Blaschke, F .; "The principle of field orientation, the basis for the transvector control of induction machines ". Siemens-Z. 4f (1971), pp. 757-760, direct self-regulation - Depenbrock, M .; "Direct Self-regulation (DSR) for highly dynamic three-phase drives with Converter power supply "Etz Archive BD 7 (1985), H. 7, pp. 211-218, Direct Torque Control - Pekka Tiitinen Msc, Pasi Pohjalainen  Msc, Jarkko Lalu Msc; "The Next Generation Motor Control Method, Direct Torque Control (DTC) ", EPE Journal Vol. 5 no. 1 March 1995). This makes it possible to flow and moment of Machine independent of one another even in dynamic condition to be able to regulate. Usually, to get a good one Control behavior and good dynamics to achieve the flow (Stator or rotor flux) also in the partial load range on his Design value kept.

Das grundsätzliche Problem beim Parallelbetrieb mehrerer Motoren an einem Umrichter besteht darin, daß die einzelnen Maschinenströme ohne zusätzlichen Aufwand nicht meß- und auswertbar sind. Standard-Industrieumrichter messen die Ströme am Ausgang des Umrichters, d. h. für den Wechselrichter stellt sich die Motorgruppe wie ein großer Motor dar. Beim Betrieb mehrerer Maschinen an einem Umrichter kommt es bei differierenden Drehzahlen zu Momentendifferenzen zwischen den einzelnen Motoren.The basic problem when operating several in parallel Motors on a converter is that the individual Machine currents cannot be measured and measured without additional effort are evaluable. Standard industrial inverters measure the currents at the output of the converter, d. H. for the inverter the engine group is like a big engine. During operation it comes from several machines on one converter differing speeds to torque differences between the individual motors.

In der DE 31 10 244 wird ein Verfahren zum Betrieb mehrerer Asynchronmotoren an einem Umrichter beschrieben, wobei der Strom jeder einzelnen Maschine gemessen und dem Umrichter zur Regelung zur Verfügung gestellt wird. Ziel dieser Regelung ist es, das Kippen der am stärksten belasteten Maschine zu verhindern.DE 31 10 244 describes a method for operating several Asynchronous motors described on a converter, the Current of each individual machine is measured and sent to the converter Scheme is made available. The aim of this regulation is it, tipping the most heavily loaded machine too prevent.

Die DE 40 11 319 beschreibt ein Verfahren zum Betrieb von zwei Motoren an einem Umrichter, wobei durch pauschale Spannungsabsenkung eine Abflachung der Motorkennlinien erfolgt. DE 40 11 319 describes a method for operating two Motors on one converter, with a flat rate Lowering of voltage a flattening of the motor characteristics he follows.  

Aus Weinmann: "Spezielle Vorkehrungen bei der Vorgabe des Statorflusses für die hochdynamische Regelung eines Traktionsantriebes" in Elin-Zeitschrift, 1993, H. 3/4, S. 116-123 ist ein Verfahren zum Betrieb eines Eisenbahn-Elektrofahrzeuges bekannt, bei dem im sogenannten "Economy-Betrieb" der Flußsollwert im Teillastbereich in Abhängigkeit vom Drehmonent-Sollwert vorgegeben wird. Diese Technik findet auch bei Lokomotiven und Straßenbahnen Verwendung, bei denen üblicher Weise eine Gruppe von Motoren parallel geschaltet, und von einem Umrichter gespeist werden. Ziel dieser Lösung ist die Erhöhung des Wirkungsgrades.From Weinmann: "Special precautions when specifying the Stator flux for the highly dynamic control of a Traction drives "in Elin-Zeitschrift, 1993, H. 3/4, pp. 116-123 is a process for operating a railway electric vehicle known in the so-called "economy mode" the flow setpoint in the partial load range depending is specified by the torque setpoint. This technique takes place also used on locomotives and trams where usually a group of motors connected in parallel, and fed by an inverter. Aim of this solution is the increase in efficiency.

Ein gleichartiger Antrieb ist auch aus der EP 437 669 A1 bekannt, wobei ebenfalls die Erhöhung des Wirkungsgrades im Mittelpunkt steht.A similar drive is also known from EP 437 669 A1 known, also increasing the efficiency in The focus is on.

Aus der DE 32 12 263 A1 ist eine Flußsollwertführung bekannt, die abhängig vom Lastsignal arbeitet. Die Abhängigkeit ist hier linear. Das beschriebene System ist besonders stromsparend.A flow setpoint control is known from DE 32 12 263 A1, that works depending on the load signal. The dependency is here linear. The system described is special energy saving.

Zur Minimierung von Momentendifferenzen mehrerer parallel laufender Motoren wird in der DE 40 11 319 A1 vorgeschlagen, die Kennlinien weich zu gestalten. Der Fluß wird dazu auf einem reduzierten Wert konstant gehalten. Eine proportionale Regelung erfolgt bei dieser Lösung nicht.To minimize torque differences of several in parallel running engines is proposed in DE 40 11 319 A1, to make the characteristics soft. The river is going to kept constant at a reduced value. A proportional one Regulation does not take place with this solution.

Die Aufgabe der Erfindung besteht darin, die Momentendifferenzen zwischen an einem Umrichter parallel betriebenen Motoren im Teillastbereich zu minimieren. The object of the invention is that Torque differences between in parallel on one converter to minimize operated engines in the partial load range.  

Erfindungsgemäß wird die Aufgabe durch die Verfahrensmerkmale des Anspruchs 1 gelöst. According to the invention, the object is achieved through the process features of claim 1 solved.  

Wesentlich an der Erfindung ist, daß den Drehstrom-Asynchronmotoren ein entsprechend dem Moment veränderlicher Fluß geregelt oder gesteuert eingeprägt wird.It is essential to the invention that the three-phase asynchronous motors a flow that changes according to the moment regulated or controlled is impressed.

Der Sollwert für den einzuprägenden Fluß wird, in Abhängigkeit des extern oder von einem übergeordneten Drehzahlregler vorgegebenen Momenten-Sollwertes oder des berechneten aktuellen Istmomentes, vorgegeben.The setpoint for the flow to be impressed becomes dependent of the external or from a superordinate speed controller specified torque setpoint or the calculated current Actual torque, specified.

Vorteilhafte Weiterbildungen des Verfahrens werden in den Unteransprüchen 2 bis 5 angegeben.Advantageous developments of the method are in the Subclaims 2 to 5 specified.

Der wesentliche Vorteil des erfindungsgemäßen Verfahrens besteht darin, daß die Momentendifferenzen einer Gruppe von Motoren, die an einem Umrichter betrieben werden, im Teillastbereich vermindert werden können. Dabei werden die Verluste im Rotor jedes Motors nicht größer als im Bemessungspunkt und der Gesamtwirkungsgrad des Antriebs verbessert sich.The main advantage of the method according to the invention is in that the torque differences of a group of motors that operated on an inverter in the partial load range can be reduced. The losses in the rotor each motor is not larger than the rated point and the The overall efficiency of the drive improves.

Nachfolgend wird die Erfindung an Hand eines Ausführungsbeispiels näher erläutert. In den Zeichnungen zeigenThe invention is described below using a Embodiment explained in more detail. Show in the drawings

Fig. 1 ein Blockschaltbild zur Veranschaulichung des Verfahrens Fig. 1 is a block diagram to illustrate the method

Fig. 2 ein Signalflußplan entsprechend der Fig. 1 FIG. 2 shows a signal flow diagram corresponding to FIG. 1

Fig. 3 einen an sich bekannten Signalflußplan eines feldorientierten geregelten Mehrmotorenantriebes Fig. 3 shows a known signal flow diagram of a field-oriented controlled multi-motor drive

Fig. 4 ein Diagramm zur Veranschaulichung der praktischen Ausführung des Verfahrens im rotorflußorientierten Koordinatensystem. Fig. 4 is a diagram illustrating the practical implementation of the method in the rotor flux-oriented coordinate system.

Der prinzipielle Ablauf des Verfahrens wird an Hand der Fig. 1 dargestellt. Aus dem extern oder von einem übergeordneten Regler 1 (Drehzahlregler) vorgegebenen Moment-Sollwert 2 wird in einem Flußsollwertgeber 3 ein Signal für den Flußsollwert ψsoll 4 gebildet. Sollfluß- und Moment werden der Motorgruppe 6 dann durch eine entsprechende Steuerung oder Regelung 5 eingeprägt.The basic sequence of the method is illustrated with the aid of FIG. 1. Given from the parent or externally by a controller 1 (speed controller) torque setpoint 2 is intended in a Flußsollwertgeber ψ 3 a signal for the reference flux formed. 4 The desired flow and torque are then impressed on the motor group 6 by a corresponding control or regulation 5 .

Die Generierung des Flußsollwertes erfolgt so, daß das Verhältnis von Fluß und Moment der Asynchronmaschine auch im Teillastbereich dem Verhältnis von Fluß und Moment am Nennpunkt der Maschine bzw. Motorgruppe entspricht:The flow setpoint is generated so that the Ratio of flow and moment of the asynchronous machine also in Part load range the ratio of flow and moment at the nominal point corresponds to the machine or motor group:

Der Schlupf ωr einer Asynchronmaschine ergibt sich als Quotient aus momentbildendem Strom und Fluß wie folgt:The slip ω r of an asynchronous machine results as the quotient of the moment-forming current and flow as follows:

wobei K ein vom gewählten Koordinatensystem abhängiger Faktor ist. Daraus ist zu ersehen, daß bei geringerem Fluß ein größerer Schlupf und ein größerer momentbildender Strom notwendig sind, um das gleiche Moment zu erzeugen. Ist der Schlupf der Maschinen größer, wirken sich Drehzahldifferenzen bei Mehrmotorenantrieben weniger stark aus. Eine beliebige Flußabsenkung ist jedoch nicht möglich, da die thermische Belastung der Motoren beachtet werden muß und der Kippschlupf nicht überschritten werden darf. Eine Führung des Flußsollwertes entsprechend des erfindungsgemäßen Verfahrens gewährleistet jedoch, daß die Verluste im Rotor jedes Motors nicht größer sind als im Bemessungspunkt, d. h. das Verfahren auf jeden Motor auch ohne Kenntnisse der motorspezifischen thermischen Verhältnisse angewandt werden kann.where K is a factor dependent on the selected coordinate system is. From this it can be seen that with a lower flow a larger one Slip and a larger torque-generating current are necessary, to create the same moment. Is the slip of the machines larger, speed differences have an effect on multi-motor drives less strong. However, any river subsidence is not possible because the thermal load on the motors is taken into account must and the tilt slip must not be exceeded. A Management of the flow setpoint according to the invention However, the process ensures that the losses in the rotor each Motors are not larger than in the design point, i.e. H. the Procedure on any engine even without knowledge of engine-specific thermal conditions are applied can.

Fig. 3 zeigt einen an sich bekannten Signalflußplan eines feldorientierten geregelten Mehrmotorenantriebes. Dabei erfolgt die Regelung der elektrischen Größen im rotorflußorientierten Koordinatensystem. Fig. 3 shows a known signal flow diagram of a field-oriented controlled multi-motor drive. The electrical variables are controlled in the rotor flux-oriented coordinate system.

Die Stromkomponenten isd bzw. isq, welche aus der Vektordrehung des Gesamtständerstromes isa und isb mit dem berechneten Rotorflußwinkel resultieren, sind Rotorfluß bzw. drehmomentproportionalen Größen. Mit diesen Größen wird damit das Gesamtfluß bzw. Gesamtmomentenverhalten der parallelgeschalteten Drehstrom-Asynchronmotoren beschrieben. The current components i sd and i sq , which result from the vector rotation of the total stator current i sa and i sb with the calculated rotor flux angle, are rotor flux or quantities proportional to torque. These variables are used to describe the total flow or total torque behavior of the three-phase asynchronous motors connected in parallel.

Aufgrund der magnetischen Sättigung des Drehstrom-Asynchronmotors ist es nicht sinnvoll, die rotorflußproportionale Stromkomponente isd* über den Nennmagnetisierungsstrom hinaus zu erhöhen. Aus diesem Grund sollte diese Stromkomponente bei einer größeren Belastung als dem Bemessungsmoment den Bemessungswert nicht wesentlich überschreiten.Due to the magnetic saturation of the three-phase asynchronous motor, it does not make sense to increase the current component i sd * proportional to the rotor flux beyond the nominal magnetizing current. For this reason, this current component should not significantly exceed the rated value when the load is greater than the rated torque.

Claims (5)

1. Verfahren zur drehmomentabhängigen Flußsollwertführung im Teillastbereich für eine Gruppe von parallel geschalteten Drehstrom-Asynchronmotoren, die von einem Umrichter gespeist werden, dadurch gekennzeichnet, daß der Flußsollwert ψsoll so gebildet wird, daß das Verhältnis von Sollmoment Msoll bzw. Istmoment Mist der Motorgruppe und Flußsollwert ψsoll dem Verhältnis von Bemessungsmoment und Bemessungsfluß entspricht.Is 1. A method for torque-dependent Flußsollwertführung in the part-load range for a group of parallel connected three phase induction motors, which are fed by a converter, characterized in that the reference flux to ψ formed so that the ratio of the setpoint torque M soll and the actual torque M is the Motor group and flux setpoint ψ should correspond to the ratio of the rated torque and the rated flow. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß für die Berechnung des Flußsollwertes ψsoll der Maximalwert mehrerer zurückliegender Momentenwerte benutzt wird.2. The method according to claim 1, characterized in that to ψ to calculate the Flußsollwertes the maximum value is used a plurality of past torque values. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Flußsollwert ψsoll dem Momentenist- bzw. Sollwert verzögert nachgeführt wird.3. The method according to claim 1 or 2, characterized in that the flow setpoint ψ should the actual torque or setpoint is tracked with a delay. 4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die Verzögerung betriebspunktabhängig erfolgt.4. The method according to claim 3, characterized in that the There is a delay depending on the operating point. 5. Verfahren nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß die Nachführung des Flußsollwertes ψsoll nur innerhalb bestimmter, festgelegter Mindest- und/oder Maximalwerte erfolgt.5. The method according to claim 1 to 4, characterized in that the tracking of the flow setpoint ψ should only take place within certain, defined minimum and / or maximum values.
DE19615095A 1996-04-17 1996-04-17 Flux regulation method for parallel asynchronous motors e.g. for rail-bound vehicles Expired - Fee Related DE19615095C1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0959556A1 (en) * 1998-05-20 1999-11-24 Institut National Polytechnique De Grenoble Flux oriented control system for asynchron motors with minimal energy
DE102004063028A1 (en) * 2004-12-22 2006-07-13 Hanning Elektro-Werke Gmbh & Co. Kg Motor driven apparatus has ac synchronous motor with cage rotor that is battery driven through a frequency converter
DE102010021488A1 (en) 2009-05-22 2011-04-07 Lenze Drives Gmbh Method for copper loss-optimal control and/or regulation of asynchronous machine, involves computing and defining control value of regulator and adapting voltage vector to regulator over control value
WO2012037983A1 (en) 2010-09-24 2012-03-29 Lenze Drives Gmbh Method for controlling an asynchronous machine having a converter in a manner that is optimal for (copper) loss
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Publication number Priority date Publication date Assignee Title
EP0959556A1 (en) * 1998-05-20 1999-11-24 Institut National Polytechnique De Grenoble Flux oriented control system for asynchron motors with minimal energy
FR2779017A1 (en) * 1998-05-20 1999-11-26 Inst Nat Polytech Grenoble REGULATION SYSTEM OF ASYNCHRONOUS MINIMUM ENERGY MOTOR BY ORIENTED FLOW CONTROL
US6239574B1 (en) 1998-05-20 2001-05-29 Schneider Electric Industries Sa Minimum energy regulation system for an asynchronous motor by field oriented control
DE102004063028A1 (en) * 2004-12-22 2006-07-13 Hanning Elektro-Werke Gmbh & Co. Kg Motor driven apparatus has ac synchronous motor with cage rotor that is battery driven through a frequency converter
DE102010021488A1 (en) 2009-05-22 2011-04-07 Lenze Drives Gmbh Method for copper loss-optimal control and/or regulation of asynchronous machine, involves computing and defining control value of regulator and adapting voltage vector to regulator over control value
WO2012037983A1 (en) 2010-09-24 2012-03-29 Lenze Drives Gmbh Method for controlling an asynchronous machine having a converter in a manner that is optimal for (copper) loss
US8975858B2 (en) 2010-09-24 2015-03-10 Lenze Drives Gmbh Method for controlling an asynchronous machine having a converter in a manner that is optimal for (copper) loss
WO2014020107A2 (en) * 2012-08-02 2014-02-06 Ssb Wind Systems Gmbh & Co. Kg Control device for a rotor blade servo drive of a wind turbine
WO2014020107A3 (en) * 2012-08-02 2014-08-14 Ssb Wind Systems Gmbh & Co. Kg Control device for a rotor blade servo drive of a wind turbine

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