WO2021043769A1 - Procédé et dispositif pour déterminer le sens de rotation d'un champ tournant et démarreur de moteur hybride - Google Patents

Procédé et dispositif pour déterminer le sens de rotation d'un champ tournant et démarreur de moteur hybride Download PDF

Info

Publication number
WO2021043769A1
WO2021043769A1 PCT/EP2020/074353 EP2020074353W WO2021043769A1 WO 2021043769 A1 WO2021043769 A1 WO 2021043769A1 EP 2020074353 W EP2020074353 W EP 2020074353W WO 2021043769 A1 WO2021043769 A1 WO 2021043769A1
Authority
WO
WIPO (PCT)
Prior art keywords
phase
polarity
current
phases
instantaneous
Prior art date
Application number
PCT/EP2020/074353
Other languages
German (de)
English (en)
Inventor
Dirk Plewka
Matthias BORUTTA
Original Assignee
Phoenix Contact Gmbh & Co. Kg
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 Phoenix Contact Gmbh & Co. Kg filed Critical Phoenix Contact Gmbh & Co. Kg
Priority to DE112020004165.4T priority Critical patent/DE112020004165A5/de
Publication of WO2021043769A1 publication Critical patent/WO2021043769A1/fr

Links

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
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/02—Details of starting control
    • H02P1/022—Security devices, e.g. correct phase sequencing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/18—Indicating phase sequence; Indicating synchronism
    • 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
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
    • H02P1/40—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor in either direction of rotation
    • 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
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/16—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using ac to ac converters without intermediate conversion to dc
    • 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
    • H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
    • H02P2207/01—Asynchronous machines

Definitions

  • the invention relates to a method and a device for determining the direction of rotation of a rotating field.
  • the proposal also relates to a hybrid motor starter which is used to control three-phase electric motors.
  • a motor starter and an associated diagnostic method are known from DE 102016203755 A1. This is provided with passive overcurrent protection in the first and second phases.
  • This object is achieved by a method for determining the direction of rotation of a rotating field according to claim 1, a device for determining the direction of rotation of a rotating field according to claim 8 and a hybrid motor starter according to claim 16.
  • the proposal according to the invention relates to a method for determining the direction of rotation of a rotating field, the rotating field being generated by three alternating currents offset in phase.
  • the phases in three-phase sockets are always connected in such a way that a clockwise rotating field results.
  • this is monitored with a method that evaluates only two of the three phases. In the case of two phases, the direction of the current is recorded as the polarity of the alternating currents.
  • this is done in such a way that the transition of the instantaneous value of the current direction from one polarity to the other polarity is determined in one of the two monitored phases and that, starting from this point, the polarity of a number of successive instantaneous values of the current direction is detected in the other of the two phases and that an evaluation takes place which proportion of the instantaneous values in the other of the two phases of the total number of instantaneous values recorded in this way has a certain polarity in order to determine the direction of rotation of the rotating field.
  • the device according to the invention which works according to the method, manages with just two current transformers, which are required in order to be able to detect the direction of rotation. This saves material and manufacturing costs.
  • the instantaneous current strength of the alternating currents is recorded for two phases, and the transition of the instantaneous value of the current strength from one polarity to the other polarity is determined in one phase.
  • the measured values for the current are signed and ideally lie on a sine curve or cosine curve. In the areas where the measured values have a positive sign, one speaks of positive polarity, correspondingly the direction of the current is positive. Negative polarity is used in the areas where the measured values have a negative sign, and the current direction is correspondingly negative.
  • the polarity of a number of successive instantaneous values of the current intensity in the other phase is recorded and an evaluation is carried out to determine which portion of the recorded instantaneous values of the current intensity in the other phase has a certain polarity in order to determine the direction of rotation of the rotating field. Often the current strength is required in addition to the current direction for further processing. It is then advantageous if the instantaneous values of the current intensity are recorded, from which the instantaneous values for the direction of the current also result. It is advantageous for the evaluation algorithm if the transition of the instantaneous value of the current intensity from one polarity to the other polarity in the first phase corresponds to the transition from negative to positive polarity. This point can be determined quickly and reliably in the sampled values of the corresponding phase. In another embodiment, it would also be possible to determine the transition point from positive to negative polarity.
  • the number of successive instantaneous values of the current intensity in the other of the two phases is measured in such a way that the instantaneous values are recorded in a quarter period of the alternating current from the determined transition point.
  • the two phases to which the current transformers are connected are the first phase L1 and the second phase L2.
  • the evaluation algorithm works in such a way that a clockwise rotating field is inferred if the number of instantaneous values determined in the second phase L2 with negative polarity after detection of the transition value in the first phase L1 is greater than two thirds of the total instantaneous values determined in T / 4.
  • the ideal signal form with correct installation even shows that all samples falling in this measurement period should have negative polarity.
  • the first phase L1 and the third phase L3 are selected for the measurement value acquisition.
  • an evaluation algorithm is used that works in such a way that a clockwise rotating field is deduced if the number of instantaneous values determined in the third phase L3 with positive polarity after detection of the transition value in the first phase L1 is greater than two thirds of the total instantaneous values determined.
  • This variant offers the same advantages as the first embodiment.
  • the second phase L2 and the third phase L3 are recorded, with the evaluation algorithm inferring a clockwise rotating field if the number of instantaneous values determined in the third phase L3 with negative polarity after detection of the transition value in the second phase L2 is greater than two thirds of the total instantaneous values determined.
  • This variant also offers the same advantages.
  • an error status can be output if the evaluation algorithm detects a different status.
  • the invention also relates to a device for carrying out the method according to the invention.
  • the device has input connections for connecting the three phases of a three-phase line, and the device is equipped with two current transformers, which are used to detect the current direction as polarity in two selected phases of the three-phase line.
  • the device has evaluation electronics that are designed to determine a point in time in order to start measured value acquisition for the instantaneous polarity values in the second of the two phases and to evaluate the acquired measured values around the direction of rotation of the rotating field determine.
  • the device manages with only two current transformers in order to be able to detect the direction of rotation.
  • the two current transformers are also used to record the current strength of the current.
  • the evaluation electronics are designed for the transition of the instantaneous value of the current intensity from one polarity to the other polarity in the first of the two phases
  • Instantaneous values of the current intensity are recorded by the two current transformers, to determine the type that the time for the transition of the instantaneous value of the current intensity from one polarity to the other polarity for the first of the two phases corresponds to the time of the change from negative to positive polarity.
  • the evaluation electronics are designed in such a way that they measure the number of successive instantaneous values of the current strength and polarity in the other phase in such a way that the instantaneous values are recorded in a quarter period of the alternating current. This corresponds to the realization of a favorable compromise with regard to the reliability of the internal rotation detection and the speed of the internal rotation detection.
  • the three variants of the implementation of the evaluation algorithm described are all equally advantageous.
  • the two phases L1 and L2 of the AC line are used for the evaluation.
  • the evaluation electronics are designed in such a way that they recognize a clockwise rotating field from the fact that the number of instantaneous values with negative polarity determined in the second phase L2 after detection of the transition value in the first phase L1 is greater than two thirds of the total instantaneous values determined.
  • the two phases L1 and L3 of the AC line are used for the evaluation.
  • the evaluation electronics are designed in such a way that they recognize a clockwise rotating field from the fact that the number of instantaneous values determined in the third phase L3 with positive polarity after detection of the transition value in the first phase L1 is greater than two thirds of the total instantaneous values determined.
  • the two phases L2 and L3 of the alternating current line are used for the evaluation.
  • the evaluation electronics are set up in such a way that they use the two phases L2 and L3 of the alternating current line for the acquisition of measured values.
  • the evaluation electronics are designed in such a way that they recognize a clockwise rotating field from the fact that the number of instantaneous values with negative polarity determined in the third phase L3 after detection of the transition value in the second phase L2 is greater than two thirds of the total instantaneous values determined.
  • An advantageous sampling rate for the evaluation electronics to record the instantaneous values of the current intensity and polarity corresponds to a sampling rate of 4k samples per second.
  • the rotating field detection described can also be used in mobile or permanently installed measuring devices such as an undervoltage measuring relay.
  • the device described can be used very advantageously in a hybrid motor starter for controlling a three-phase electric motor.
  • the hybrid motor starter is typically equipped with programmable electronics that can also execute the evaluation algorithm.
  • the measurement effort is low because samples only have to be recorded for two phases.
  • the hardware outlay is also reduced because measured values only have to be recorded for two phases.
  • the evaluation is carried out with the help of an evaluation algorithm that is processed by a programmable processing unit, such as a microcontroller, FPGA, ASIC, etc. This solution can be easily integrated in a hybrid motor starter.
  • FIG. 2 shows a flow chart for an evaluation algorithm for testing whether a right rotating field has been installed by evaluating phases L1 and L3;
  • FIG. 3 shows a signal diagram with the current curves in the three phases of a three-phase line when installing a clockwise rotating field for the evaluation algorithm according to FIG. 2;
  • FIG. 5 shows a flow chart for an evaluation algorithm for testing whether a right rotating field has been installed and evaluating phases L1 and L2;
  • FIG. 6 shows a signal diagram with the current curves in the three phases of a three-phase line with installation of a clockwise rotating field and evaluation of phases L1 and L2;
  • FIG. 11 shows a block diagram of a hybrid motor starter which contains a device for determining the direction of rotation of a rotating field.
  • the reference number 10 denotes a device which is connected between a three-phase load 20 and the three-phase line 5. This device 10 also serves to protect the three-phase application.
  • Typical three-phase loads are three-phase electric motors and heating devices such as electric stoves, instantaneous water heaters and hot water storage devices.
  • the main application for three-phase current is in electric motors, in which the rotating magnetic field drives a rotor. To this end, a further exemplary embodiment is described below.
  • the reference numeral 12 denotes two current transformers which enable measurement value acquisition in two phases of the three-phase line 5.
  • the first current transformer 12 is connected to the first phase L1 and the second Current transformer 12 to the third phase L3.
  • No current transformer is provided for the second phase L2.
  • Typical current transformers are small power transformers that transform high currents into easily measurable values.
  • the input winding is switched into the conductor of the respective phase L1, L2 and the current to be measured flows through it.
  • a conventional ammeter is connected to the output winding.
  • a third variant of current transformers 12, which can also be used in the described device, are Hall-effect current transformers. These utilize the Hall effect, which consists in generating an electrical voltage in a current-carrying conductor that is located in a stationary magnetic field. Hall generators of this type are typically designed to be flat, with a magnetic field that is as homogeneous as possible being generated, which is oriented perpendicular to the flat conductor. The Hall voltage is picked up at the outer edges of the flat conductor across the direction of the current.
  • the measured values are recorded by the evaluation electronics 14 of the device and temporarily stored for the evaluation.
  • the evaluation electronics 14 can be designed as a microcontroller. This is equipped with an A / D converter and scanning unit to record successive measured values. It also contains a memory (eg CMOS RAM memory) to temporarily store the measured values.
  • the main component is a microcomputer that is programmable and executes the evaluation algorithm. Another component is an output unit via which the various switching signals are output. It is then z. B. the load on the three-phase line switched on when the evaluation of the measured values shows that the power installation is correct.
  • the individual phases can be monitored, for example with a high-resistance measuring resistor (not shown), in order to test whether the respective phase L1, L2, L3 is actually carrying current. However, this can also be made dependent on whether the installation has correctly assigned the phases so that a rotating field with clockwise rotation results. This is prescribed by VDE for a three-phase installation.
  • the two current transformers 12 are used to measure the direction of rotation.
  • the device 10 is installed in such a way that the two current transformers 12 are connected to the phases L1 and L3.
  • an evaluation algorithm is used, the flow chart of which is shown in FIG. 2.
  • This evaluation algorithm works in the following way.
  • the start of the program is denoted by the reference number 50.
  • the program can be started the first time it is connected to the supply network.
  • the program is preferably started periodically by a timer, which can be contained in the microcontroller, for example. This has the advantage that the installation is continuously monitored and errors that occur while the system is in operation can also be detected.
  • program step 51 the starting point is sought from which measurement value acquisition is to take place.
  • a special signal transition ÜL1 is sought on the first phase L1.
  • the signal transition is preferably determined in such a way that the polarity of the instantaneous values of the recorded current intensity is recorded and that point in time is determined as the signal transition in phase L1 at which the polarity of the measured values changes from negative polarity to positive polarity.
  • the measurement value acquisition starts in program step 52 in the third phase L3.
  • the measured values are recorded for a quarter of the period T of the alternating current in phase L3.
  • the appropriate signal diagram is shown in FIG. 3.
  • the mains frequency in Germany is 50 Hz.
  • a quarter of the period T therefore corresponds to one Time span of 5 ms.
  • the sampling rate for measured value acquisition is in the range of kS / s.
  • the sampling rate was 4 kS / s. But it can also be lower or higher.
  • 3 shows a signal diagram in which the alternating current behavior is shown in the three phases L1, L2, L3. If the installation is correct, a rotating field on the right is generated. Then the waveforms are as shown in FIG.
  • a phase difference of 120 ° is set in each case between the phases L1, L2, L3.
  • the signal curves shown with a phase difference of 120 ° generate a magnetic field rotating in the right direction in the stator of an electric motor with three coils arranged offset by 120 °.
  • the recorded measured values are evaluated. This analyzes whether 2/3 of the recorded measured values have positive polarity. From the signal curves in FIG. 3 it can be seen that in the range from 0 to 5 ms (0 to p / 2) or in the range from 20 to 25 ms (2p to 5p / 2) the signal curve of L3 is two-thirds positive Samples should give and negative samples for a third.
  • the reference symbol NPL3 denotes the range in which the measured values with negative polarity are in phase L3. If this condition is met, the program branches in program step 53 to program step 54 in which the result is determined that a right direction of rotation is present. Otherwise, the result is determined in program step 55 that there is an error in the installation.
  • a corresponding register entry can be made in each of the program steps 54 and 55.
  • Another part of the program accesses this register and can control appropriate displays to inform the user.
  • different LEDs can be made to light up, i.e. one LED that shows the clockwise rotation of the rotating field and one LED that outputs an error status. After clockwise rotation is displayed, the load 20 is switched on to the three-phase current in program step 56. This does not take place if the error status is present.
  • FIG. 5 shows the flow chart of an evaluation algorithm for a further exemplary embodiment of the invention.
  • the current transformers 12 are connected to phase L1 and L2 in order to detect the direction of rotation.
  • FIG. 6 shows the phase position of the current curves for the generation of a right-hand rotating field and the area in which the instantaneous values of the current curve are recorded in phase L2.
  • the evaluation algorithm again determines the transition point ÜL1 in phase L1 as described above in the corresponding program step 61.
  • the sampled values are recorded for phase L2. This takes place in program step 62.
  • the reference symbol NPL2 denotes the range in which the measured values with negative polarity are in phase L2.
  • the evaluation takes place in program step 63. This tests whether at least 2/3 of the measured values have negative polarity. If this condition is met, it is determined in program step 64 that the right direction of rotation has been recognized. If this test turns out negative, the error status is registered in program step 65. If the clockwise direction of rotation has been recognized, the load 20 is switched to the three-phase current in program step 66. The program then ends in program step 67, as well as after the error status has been registered.
  • Fig. 7 shows the current curves for the case that a rotating field with a left direction of rotation has to be installed. Then it results for the sampled values in phase L2 that 2/3 of the measured values have the positive polarity. This would be checked by the evaluation algorithm. 8 shows a further flow diagram of an evaluation algorithm. The flow chart shown there is provided for a further exemplary embodiment.
  • the current transformers 12 are connected to phases L2 and L3 in order to detect the direction of rotation.
  • Fig. 9 shows the phase position of the current curves for the generation of a right rotating field.
  • the search for the transition from negative to positive polarity in phase 2 in program step 71 leads to point UL2, which is approximately 7 ms.
  • the samples are acquired for phase L3. This takes place in program step 72.
  • the reference symbol NPL3 denotes the range in which the measured values with negative polarity are in phase L3.
  • the evaluation takes place in program step 73. If the phase position is correct, all sampled values from phase L3 will have negative polarity. It is therefore tested in program step 73 whether at least 2/3 of the measured values have negative polarity. If this condition is met, it is determined in program step 74 that the right direction of rotation has been recognized. If this test turns out negative, the error status is registered in program step 75. If the clockwise direction of rotation has been recognized, the load 20 is switched to the three-phase current in program step 76. The program then ends in program step 77, as well as after the error status has been registered.
  • FIG. 10 shows the current curves when a left rotating field is to be installed. In this case 2/3 of the samples are in the range of positive polarity. This is then checked by the corresponding evaluation algorithm.
  • Hybrid motor starters are installed in control cabinets of industrial systems or other systems using top hat rail mounting in order to control and monitor three-phase electric motors. They can be used to replace the reversing contactor circuits and motor protection devices that are usually to be installed, which reduces the installation effort.
  • Hybrid motor starters include ICs that are built using hybrid technology and combine semiconductor components and robust relay technology based on micromechanics in one housing. Hybrid motor starters typically provide the following functions:
  • the reference number 30 denotes the three-phase electric motor. It is, for example, a three-phase asynchronous motor.
  • Reference number 16 denotes triacs, the function of which is to switch the alternating current in phase L2 and phase L3 in both current directions. The control current can be used to set whether the phase to the motor is fully switched on or only partially. A power control, a soft start, etc. can thus be implemented.
  • the triac's 16 are controlled by the evaluation electronics 14.
  • the reference number 17 denotes relays which can be designed as overload protection relays. Input switches 18 are provided for phases L1 and L2, which can switch phases on and off.
  • Output switches 19 are provided for phases L1 and L3, with which the phases of the electric motor can be switched on or off, and can also be reversed.
  • the switches 18 and 19 are also controlled by the evaluation electronics 14.
  • the right and left rotation of the electric motor can be set via this. It should be understood that the proposed method and associated devices can be implemented in various forms of hardware, software, firmware, special purpose processors, or a combination thereof.
  • the current intensity was recorded with the current transformers and the current direction was derived from it. In a simplified variant, it is sufficient to only record the current direction of the current in the respective phase.
  • Specialty processors can include application specific integrated circuits (ASICs), reduced instruction set computers (RISC), and / or field programmable gate arrays (FPGAs).
  • ASICs application specific integrated circuits
  • RISC reduced instruction set computers
  • FPGAs field programmable gate arrays
  • the proposed method and the device are preferably implemented as a combination of hardware and software.
  • the software is preferably installed as an application program on a program storage device. Typically, it is a computer platform-based machine that includes hardware such as one or more central processing units (CPU), random access memory (RAM), and one or more input / output (I / O) interfaces.
  • An operating system is also typically installed on the computer platform.
  • the various processes and functions described here can be part of the application program or a part that is executed by the operating system.
  • Electric motor 30 different program steps of a 1st computer program 50-56 different program steps of a 2nd computer program 60-66 different program steps of a 3rd computer program 70-76 first phase L1 second phase L2 third phase L3

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

L'invention a pour objet un procédé pour déterminer le sens de rotation d'un champ tournant, le champ tournant étant généré par des courants alternatifs triphasés à décalage de phase. Le champ tournant correspond à un champ magnétique tournant. Le procédé consiste à enregistrer la polarité instantanée des courants alternatifs dans deux des trois phases (L1, L2, L3). Pour déterminer le sens de rotation, la transition de la valeur instantanée de la polarité d'une polarité à l'autre est déterminée dans une phase (L1, L2, L3), et sur la base de ce point, la polarité d'un certain nombre de valeurs instantanées successives est enregistrée dans l'autre phase (L1, L2, L3). Ces valeurs de mesure sont évaluées de manière à déterminer quelle proportion des valeurs instantanées dans l'autre phase (L1, L2, L3) présente une polarité particulière pour déterminer la direction de rotation du champ de rotation.
PCT/EP2020/074353 2019-09-02 2020-09-01 Procédé et dispositif pour déterminer le sens de rotation d'un champ tournant et démarreur de moteur hybride WO2021043769A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112020004165.4T DE112020004165A5 (de) 2019-09-02 2020-09-01 Verfahren und vorrichtung zur ermittlung der drehrichtung eines drehfeldes sowie hybrid-motorstarter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE20195576A BE1027539B1 (de) 2019-09-02 2019-09-02 Verfahren und Vorrichtung zur Ermittlung der Drehrichtung eines Drehfeldes sowie Hybrid-Motorstarter
BEBE2019/5576 2019-09-02

Publications (1)

Publication Number Publication Date
WO2021043769A1 true WO2021043769A1 (fr) 2021-03-11

Family

ID=67999501

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/074353 WO2021043769A1 (fr) 2019-09-02 2020-09-01 Procédé et dispositif pour déterminer le sens de rotation d'un champ tournant et démarreur de moteur hybride

Country Status (3)

Country Link
BE (1) BE1027539B1 (fr)
DE (1) DE112020004165A5 (fr)
WO (1) WO2021043769A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4887018A (en) 1985-03-01 1989-12-12 Square D Company Line to line to line to neutral converter
US5003242A (en) 1985-03-01 1991-03-26 Square D Company Reduced voltage starter
DE19508769C1 (de) * 1995-03-01 1996-08-29 Siemens Ag Verfahren zur Bestimmung des Drehsinnes eines Drehstromnetzes und Schaltungsanordnung zur Durchführung des Verfahrens
DE102016203755A1 (de) 2016-03-08 2017-09-14 Siemens Aktiengesellschaft Motorstarter und Diagnoseverfahren
DE102017222420A1 (de) * 2017-12-11 2019-06-13 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur plausibilisierung bei der stromversorgung eines elektrischen motors

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4887018A (en) 1985-03-01 1989-12-12 Square D Company Line to line to line to neutral converter
US5003242A (en) 1985-03-01 1991-03-26 Square D Company Reduced voltage starter
DE19508769C1 (de) * 1995-03-01 1996-08-29 Siemens Ag Verfahren zur Bestimmung des Drehsinnes eines Drehstromnetzes und Schaltungsanordnung zur Durchführung des Verfahrens
DE102016203755A1 (de) 2016-03-08 2017-09-14 Siemens Aktiengesellschaft Motorstarter und Diagnoseverfahren
DE102017222420A1 (de) * 2017-12-11 2019-06-13 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur plausibilisierung bei der stromversorgung eines elektrischen motors

Also Published As

Publication number Publication date
BE1027539A1 (de) 2021-03-24
DE112020004165A5 (de) 2022-05-25
BE1027539B1 (de) 2021-03-29

Similar Documents

Publication Publication Date Title
DE112010000959B4 (de) Vorrichtung zur Erfassung von Isolationsabbau
EP2619599B1 (fr) Dispositif electrique et procede de detection d'une perte de phase dans un dispositif electrique
DE112013005190T5 (de) Verbesserungen bei elektrischen Servolenksystemen
DE102015008831A1 (de) Hochvolt-Netz und Verfahren zum Lokalisieren eines Isolationsfehlers in einem Hochvolt-Netz für ein Kraftfahrzeug
DE102014223234B3 (de) Verfahren und Vorrichtung zur Diagnose elektrischer Weichen
DE102007040217A1 (de) Sensorloser Betrieb einer elektronisch kommutierten Gleichstrommaschine
DE112018001976T5 (de) Stückweise schätzung von gegenspannung zur fehlererkennung in elektrischen systemen
DE69721455T2 (de) Überwachung eines elektrischen Motors
DE102009020473A1 (de) Verfahren zur Fehlererkennung bei der Ansteuerung eines Drehfeldmotors
DE102013012861A1 (de) Diagnoseverfahren für eine elektrische Maschine
DE102012215166B4 (de) Schaltgerät für einen Einphasenmotor und einen Drehstrommotor
DE102020205796A1 (de) Verfahren zum Diagnostizieren eines Fehlers in einer Motorschaltung
BE1027539B1 (de) Verfahren und Vorrichtung zur Ermittlung der Drehrichtung eines Drehfeldes sowie Hybrid-Motorstarter
EP0609261B1 (fr) Systeme de controle d'un systeme de commande electrique
DE102019123406A1 (de) Verfahren und Vorrichtung zur Ermittlung der Drehrichtung eines Drehfeldes sowie Hybrid-Motorstarter
DE102018002188A1 (de) Verfahren zum Prüfen eines Antriebs und Antrieb
DE102009010408A1 (de) Verfahren zum Betreiben eines Elektromotors
EP1994417B1 (fr) Dispositif pour mesurer une première tension et une seconde tension au moyen d'un voltmètre différentiel
DE102015003446A1 (de) Versorgung eines Kraftfahrzeugs mit Spannungsprüfung
DE112004002642B4 (de) Plausibilitätsprüfung eines elektrischen Drei-Phasen-Systems
DE4437750A1 (de) Verfahren und Schaltungsanordnung zur Messung der Drehzahl eines Elektromotoros
DE102012220843A1 (de) Diagnose einer Drehfeldmaschine
DE2732379A1 (de) Geraet zur automatischen uebertragungssteuerung
EP3577476A1 (fr) Procédé de détection d'un défaut sur un générateur et système de test de générateur
DE3706932C2 (fr)

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20764090

Country of ref document: EP

Kind code of ref document: A1

REG Reference to national code

Ref country code: DE

Ref legal event code: R225

Ref document number: 112020004165

Country of ref document: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20764090

Country of ref document: EP

Kind code of ref document: A1