CN111316561B - Operation of a permanent magnet excited synchronous motor - Google Patents
Operation of a permanent magnet excited synchronous motor Download PDFInfo
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- CN111316561B CN111316561B CN201780096601.9A CN201780096601A CN111316561B CN 111316561 B CN111316561 B CN 111316561B CN 201780096601 A CN201780096601 A CN 201780096601A CN 111316561 B CN111316561 B CN 111316561B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- 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
- H02P1/46—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual synchronous motor
- H02P1/52—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual synchronous motor by progressive increase of frequency of supply to motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- 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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
- H02P6/182—Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings
-
- 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
- H02P6/20—Arrangements for starting
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention relates to a method for operating a permanently excited synchronous machine (1) having a stator (2) with stator windings, a rotor (3) and phase currents (i) for regulating the stator windings U ，i V ，i W ) A thyristor regulator (4). In the method, at least two terminal voltages of the synchronous motor (1) are continuously detected. In order to start the synchronous machine (1), the stator windings are energized with at least one current pulse. After each current pulse, it is checked whether the voltage characteristic value formed by the terminal voltage exceeds a predefined voltage threshold value. Once the voltage characteristic value exceeds the voltage threshold value, the corresponding current pole wheel angle is repeatedly determined by using the respectively detected current terminal voltageUsing the corresponding current pole wheel angleThe respective current optimum firing angle for the synchronous machine (1) is calculated and the thyristor regulator (4) is controlled in correspondence with the respective current optimum firing angle to operate the synchronous machine (1).
Description
Technical Field
The invention relates to a method for operating a permanently excited synchronous machine having a stator with stator windings, a rotor and a thyristor regulator for regulating the phase currents of the stator windings.
Background
Three-phase motors are classified into different energy efficiency classes according to IEC standard 60034 according to their efficiency. Just in the low power range up to about 20kW, it is difficult to meet the preset value of the efficiency of the high efficiency motor (IE 4). Accordingly, there is an increasing effort to use permanent magnets in the rotor, in particular to use permanent magnet excited synchronous machines. Although this type of motor is capable of achieving high energy efficiency levels, starting and operating this type of motor on a rigid grid is not easily accomplished.
In order to enable the permanent magnet excitation synchronization to start and run on a rigid electrical network, a damping cage may be provided in the rotor of the electrical machine. The damping cage, although enabling a safe start-up on a rigid power network, nevertheless subjects the supplied power network to a very strong load due to the very high start-up current.
DE 10 2011 085 859 A1 (Siemens AG: benecke) discloses, on 2013, 5/8, a method for operating a synchronous machine with a three-phase current regulator of three phases, which is connected to a three-phase network, comprising three semiconductor regulators. In this case, when at least two semiconductor regulators are switched on, the torque profile of the synchronous machine is calculated in advance within a determinable time period taking into account the phase difference between the pole wheel voltage of the synchronous machine and the network voltage of the three-phase network, the rotational speed of the rotor of the synchronous machine, the stator current of the synchronous machine and the phase of the three-phase network. The switching times at which at least two semiconductor regulators are switched on are determined from the preliminary calculation. However, this method requires the current pole wheel angle and the current rotational speed of the synchronous motor, so that the synchronous motor must be equipped with a corresponding rotary encoder system for detecting the pole wheel angle and the rotational speed.
WO2018/072810A1 (Siemens AG: nannen; zatocil) discloses a method for aligning a three-phase motor on the 4 th month 26 2018, wherein in a first step an optimal firing angle is determined, in a second step a first alignment is performed using the determined optimal firing angle, and in a third step a reliability test of the alignment of the rotor is performed by the rotor being applied with the previously determined firing angle in the further current direction. To align the rotor according to this method, it usually takes several seconds. After aligning the rotor, the motor may be started. By aligning the rotor, the rotor is rotated to a defined initial position to determine a first firing angle for the starter motor. For start-up, a method can be used, for example, which is known from patent application WO2018/086688A1 (Siemens AG: nannen; zatocil) at 5, 17, 2018. In this case, the rotor is rotated from a known initial position with maximum torque by means of an ignition thyristor, the voltage induced by the rotation of the rotor is measured, and the optimum ignition angle of the synchronous machine is determined. This method enables starting the motor without a rotary encoder system, however provides for aligning the rotor prior to starting.
The NANNEN HAUKE et al article "soft starter driven line start PMSM based on back EMF measurement Sensorless start-up of soft starter driven line-start PMSM based on back EMF measurement", 2017, IEEE 26, international industrial electronics conference (ISIE), IEEE, (20170619), doi:10.1109/isie.2017.8001272, pages 354-361, XP033136538 describes a method for starting an IE4 direct permanent magnet excitation synchronous motor (PMSM) without an encoder on the soft start device. After the initial rotor position has been determined by means of the pulsating current space vector, the motor is started from a standstill by means of the soft start device using a known starting angle. The subsequent firing angle may be calculated based on the induced EMK (electromotive force) voltage of the motor.
The article "soft starter driven Sensorless start-up of soft starter driven IE motor for IE4 motors" by ZATOCIL HEIKO et al, 2017, IEEE-PELS and EPE association held in combination 19 th european power electronics and applications conference (EPE' 17ECCE EUROPE), (20170911), doi:10.23919/EPE17ECCEEUROPE.2017.8098972, XP033250354, describes a method for starting an IE4 direct permanent magnet excited synchronous motor (PMSM) without an encoder on the soft start device. The initial rotor position is first determined by means of the pulsating current space vector. The motor is then started from a stationary state by means of a soft start device using a known starting angle. The subsequent firing order was calculated based on the estimated flow angle and velocity through a reduced Lu Enba grid observer (Luenber-Beobachter), which does not require an additional encoder other than a standard industrial soft start device.
Disclosure of Invention
The object of the present invention is therefore to provide a method for operating a permanently excited synchronous machine, which is improved in particular with respect to the time required for starting the synchronous machine and which is also suitable without a rotary encoder system for detecting the pole wheel angle.
According to the invention, this object is achieved by the features of claim 1.
Advantageous embodiments of the invention are the subject matter of the dependent claims.
In the method according to the invention for operating a permanently excited synchronous machine having a stator with stator windings, a rotor and a thyristor regulator for regulating the phase currents of the stator windings, at least two terminal voltages of the synchronous machine are continuously detected. To start the synchronous machine, the stator windings are energized with at least one current pulse. After each current pulse, it is checked whether a voltage characteristic value formed by the end voltage (for example, the maximum value of the detected amplitude of the end voltage or the amplitude of a voltage space vector formed by the end voltage) exceeds a predefined voltage threshold value, at which the pole wheel angle can be determined using the end voltage. Once the voltage characteristic value exceeds the voltage threshold value, the synchronous machine is operated by repeatedly determining a respective current pole wheel angle using the respectively detected current terminal voltages, calculating a respective current optimum firing angle for the synchronous machine using the respective current pole wheel angle, and controlling the thyristor regulator in correspondence with the respective current optimum firing angle. The stator winding of a synchronous machine is here understood to be a three-phase stator winding, i.e. the entirety of the phase windings of the stator.
The invention therefore provides for the terminal voltage of the permanently excited synchronous machine to be detected and for the pole wheel angle of the rotor of the synchronous machine to be determined using the detected terminal voltage. In operation of the synchronous machine, the pole wheel angle is repeatedly determined, and a corresponding optimum firing angle is calculated using the corresponding current pole wheel angle, with which the thyristor controller is controlled to regulate the phase currents of the stator windings of the synchronous machine. In this way, an expensive rotary encoder system for detecting the pole wheel angle and subsequently calculating the optimum firing angle can advantageously be dispensed with.
In addition, the invention provides that for starting the synchronous machine, the stator winding is energized with current pulses until a voltage characteristic value formed by the terminal voltage exceeds a predetermined voltage threshold value, which is sufficient to determine the pole wheel angle. The following are fully utilized here: empirically, at least one terminal voltage is already large enough to determine the pole wheel angle, usually only after a few current pulses. In this way, time-consuming alignment of the rotor can be dispensed with, so that the synchronous machine can be started significantly faster than in a two-stage method in which the rotor is first aligned by setting a defined pole wheel angle. In general, in the method according to the invention, it is already possible to determine the pole wheel angle from the terminal voltage after 10ms to 100ms, whereas a complete alignment of the rotor usually takes several seconds, thus saving several seconds to start the synchronous motor.
The embodiment of the invention provides that at least two phase currents are detected and, using the detected phase currents, a corresponding current pole wheel angle is determined and/or, using the detected phase currents, a corresponding current ignition angle is calculated. This embodiment of the invention makes it possible to take into account the phase current in addition to the end voltage when determining the pole wheel angle and/or the optimum ignition angle. In this way, the determination of the pole wheel angle can be improved and/or the ignition angle can also be calculated as a function of the phase current and thus be further optimized.
A further embodiment of the invention provides that the voltage threshold is a minimum voltage characteristic value, in which the pole wheel angle can be determined using the end voltage. This maximizes the time saving already mentioned above (zeitgewin) when starting the synchronous machine.
A further embodiment of the invention provides that the torque window and the phase current window are predefined, and that the respective current optimum firing angle is the firing angle in which the torque acting on the rotor is located inside the torque window and each phase current of the stator winding is located inside the phase current window. This embodiment of the invention advantageously prevents the synchronous machine or the network connected to the synchronous machine and the consumers connected to the network from being excessively heavily loaded by excessively high torques or excessively high phase currents.
A further embodiment of the invention provides that the current space vector of the current pulse is changed relative to the current space vector of the preceding current pulse if the voltage characteristic value does not exceed the voltage threshold value. In particular, the current space vector of each current pulse may be changed with respect to the current space vector of the current pulse preceding it, as long as the voltage characteristic value does not exceed the voltage threshold value. When changing the current space vector of the successive current pulses, the current space vector is rotated, for example, in the direction of rotation of the rotating field of the synchronous machine. Furthermore, when changing the current space vector of successive current pulses, the current space vector is rotated, for example, by 60 degrees or a multiple of 60 degrees. By means of this embodiment of the invention, it is possible to prevent a plurality of current pulses from being generated, which, due to the space vector direction of their current space vector and the current position of the rotor, do not lead to a rotation of the rotor or only to a slight rotation of the rotor. Thereby further accelerating the start-up of the synchronous motor.
A further embodiment of the invention provides that the maximum number of current pulses is predefined, and that the energization of the stator winding with current pulses is terminated if the number of current pulses reaches the maximum number of pulses and the voltage characteristic value does not exceed the voltage threshold value. A further embodiment of the invention provides that a maximum number of changes is predefined and that the energization of the partial windings with current pulses is terminated if the number of changes in the current space vector of the successive current pulses reaches the maximum number of changes without the voltage characteristic value exceeding the voltage threshold value. This embodiment of the invention takes into account fault situations in which the synchronous machine cannot be started, for example, due to a defect or a fault. In this case, the method is terminated if the number of current pulses reaches a predefined maximum number of pulses and/or the number of changes in the current space vector of the successive current pulses reaches a predefined maximum number of changes.
The permanently excited synchronous machine according to the invention comprises a stator with stator windings, a rotor, a thyristor regulator for regulating the phase currents of the stator windings, a voltage measuring device for detecting the voltage of at least two terminals of the synchronous machine and a control unit for controlling the thyristor regulator according to the method according to the invention. The advantages of such a synchronous machine result from the above-mentioned advantages of the method according to the invention.
Drawings
The above-described features, and advantages of the present invention and the manner in which the same are accomplished will become more readily apparent and understood from the following description of the embodiments taken in conjunction with the accompanying drawings. In this figure:
figure 1 shows a circuit diagram of a permanent magnet excited synchronous motor,
figure 2 shows a flow chart of a method for operating a permanent magnet excited synchronous motor,
fig. 3 shows a time-varying process of phase currents of stator windings of a permanent magnet excited synchronous motor, and
fig. 4 shows the time-varying course of the pole wheel angle of the rotor of a permanently excited synchronous machine.
Detailed Description
Fig. 1 shows a circuit diagram of a permanent magnet excited synchronous motor 1. The synchronous machine 1 comprises a stator 2 with (not shown) three-phase stator windings, a rotor 3, phase currents i for regulating the stator windings U 、i V 、i W A thyristor regulator 4 and a control unit 5 for controlling the thyristor regulator 4.
For each phase U, V, W of the stator winding, the thyristor regulator 4 has two pairs 6, 7, 8 of thyristors A1, A2, B1, B2, C1, C2 connected in anti-parallel. The firing electrodes of the thyristors A1, A2, B1, B2, C1, C2 are connected to a control unit 5, from which the firing signals required for firing the thyristors A1, A2, B1, B2, C1, C2 are provided. By firing thyristors A1, A2, B1, B2, C1, C2 associated with phase U, V, W, a phase current i of this phase U, V, W of the stator winding is generated U 、i V 、i W . When the phase current i of the phase U, V, W U 、i V 、i W When it goes to zero or changes its sign, the thyristors A1, A2, B1, B2, C1, C2 of phase U, V, W turn off themselves. According to the method described in detail with reference to fig. 2, the control unit 5 is designed for controlling the thyristor regulator 4. For example, the control unit 5 is implemented as a programmable microcontroller which is programmed for implementing the method.
Fig. 2 shows a flow chart of a method for operating a permanently excited synchronous machine 1. In this method, at least two terminal voltages of the synchronous motor 1 are continuously detected. Furthermore, the method steps S1 to S7 described below are carried out.
In a first method step S1, the stator windings of the stator 2 are energized with current pulses. For this purpose, the thyristors A1, A2, B1, B2, C1, C2 of the two phases U, V, W are ignited such that the phase current i of the phase U 、i V 、i W The magnitudes are the same but of opposite sign to each other. Thyristors A1, A2, B1, B2, C1, C2 of the third phase U, V, W are not fired, so that the third phase current i U 、i V 、i W Zero.
After the first method step S1, i.e. after the current pulse has decayed or at each phase current i U 、i V 、i W Or by the phase current i U 、i V 、i W After the amplitude of the resulting current space vector has fallen below a predefined current threshold, the method is continued with a second method step S2.
In a second method step S2, it is checked whether a voltage characteristic value formed by the end voltage (for example, the maximum value of the detected amplitude of the end voltage or the amplitude of a voltage space vector formed by the end voltage) exceeds a predefined voltage threshold value, at which the pole wheel angle of the rotor 3 can be determined using the end voltage. If the check shows that the voltage characteristic value does not exceed the voltage threshold value, the method is continued with a third method step S3, otherwise the method is continued with a fifth method step S5.
In a third method step S3, the value of a counting variable that counts the current pulses generated for energizing the stator winding is increased by 1. If the value of the counting variable has reached a predefined maximum number of pulses, the method ends in a fourth method step S4. Otherwise, the first method step S1 is carried out again after the third method step S3.
In the first four method steps S1 to S4, the stator winding is therefore energized with current pulses until the voltage characteristic exceeds a predefined voltage threshold or the number of current pulses reaches a predefined maximum number of pulses. In the event that the voltage characteristic exceeds the voltage threshold, the rotor 3 rotates sufficiently rapidly to determine the pole wheel angle from the detected terminal voltageThe method can thus be continued with a fifth method step S5. In the event that the number of current pulses reaches a predefined maximum number of pulses, it is provided to terminate the method in order to cope with a fault situation in which the synchronous machine 1 cannot be started.
The further steps S5 to S7 correspond to the method for operating the synchronous machine 1 known from the patent application with application number PCT/EP2016/077201 and are therefore not described in detail here.
In a fifth method step S5, a current pole wheel angle is determined using the detected current terminal voltageAfter the fifth method step S5, the method continues with a sixth method step S6.
In a sixth method step S6, the current pole wheel angle is usedThe respective current optimum firing angle for the synchronous machine 1 is calculated. The optimum firing angle is such that the torque acting on the rotor 3 in this case lies within a predefined torque window and each phase current i U 、i V 、i W Is positioned at a preset positionAn ignition angle inside a phase current window of (a). After the sixth method step S6, the method continues with a seventh method step S7.
In a seventh method step S7, the thyristor controller 4 is controlled in accordance with the current optimum firing angle. After the seventh method step S7, the method continues with a fifth method step S5.
Fig. 3 and 4 exemplarily illustrate method steps S1 to S3 and S5. Fig. 3 shows the phase current i as a function of time t U 、i V 、i W The phase current has two successive current pulses with which the stator winding is energized. In the example shown, the thyristors A1, A2, B1, B2 of phases U and V are ignited in order to generate a current pulse. FIG. 4 shows pole wheel angleAnd the pole wheel angle determined using the respectively detected current terminal voltages +.>Corresponding change procedure of (a). In the case shown in fig. 3 and 4, the rotor 3 does not rotate before the first current pulse, so that the pole wheel angle +.>And remain constant until the first current pulse. The rotor 3 is put in rotation by the first current pulse and, due to its inertia, continues to rotate at approximately the same angular velocity between the first current pulse and the second current pulse, whereby a terminal voltage is induced. However, this angular velocity is not yet sufficient for determining the pole wheel angle +.>That is, the voltage characteristic value has not exceeded the voltage threshold between the first current pulse and the second current pulse. The rotor 3 is further accelerated by the second current pulse, so that after the second current pulse,the angular speed of rotation of the rotor 3 is sufficient to determine the pole wheel angle using the detected terminal voltage induced by the rotor rotation>That is, after the second current pulse, the voltage characteristic value exceeds the voltage threshold. FIG. 4 also shows the pole wheel angle determined using the detected terminal voltage +.>Very good and practical pole wheel angle +.>And consistent. In the example shown in fig. 3 and 4, it has been possible to determine the pole wheel angle +.>。
The method described above with respect to fig. 2 can be extended in different ways. For example, in the case of repeated execution of the first method step S1, the current space vector of the current pulse may be changed relative to the current space vector of the preceding current pulse. In particular, the current space vector can be rotated here, for example by 60 degrees or a multiple of 60 degrees, in the direction of rotation of the rotating field of the synchronous machine 1 relative to the current space vector of the preceding current pulse. If a predetermined number of successive current pulses of the current space vector having the same space vector direction are implemented, a rotation of the current space vector can be specified, for example. It may also be provided that the current space vector of each current pulse is rotated relative to the current space vector of the current pulse preceding the current pulse. By means of this embodiment, it is possible to prevent a plurality of current pulses from being generated, which have a current space vector in the direction of a disadvantageous or ineffective space vector.
In a third method step S3, it can be correspondingly provided that the method is terminated in a fourth method step S4 when the number of changes in the current space vector of the successive current pulses reaches a predefined maximum number of changes.
It can furthermore be provided that at least two phase currents i are detected U 、i V 、i W And in a fifth method step S5, the detected phase current i is used U 、i V 、i W Is used for determining the polar angleAnd/or in a sixth method step S6, the detected phase current i is used U 、i V 、i W The ignition angle is calculated in the case of (a).
While the invention has been illustrated and described in detail with reference to preferred embodiments, the invention is not limited to the examples disclosed and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention.
Claims (13)
1. Method for operating a permanently excited synchronous machine (1) having a stator (2) with stator windings, a rotor (3) and phase currents (i) for regulating the stator windings U ，i V ，i W ) But without a rotary encoder system for detecting the pole wheel angle, wherein,
continuously detecting at least two terminal voltages of the synchronous motor (1),
energizing the stator winding with at least one current pulse for starting the synchronous motor (1),
-after each current pulse, checking whether a voltage characteristic value formed by a terminal voltage exceeds a predefined voltage threshold value, in which case the terminal voltage can be used to determine the pole angle of the rotor (3)And
-once the voltage characteristic value exceeds the voltage threshold value, by using the respectively detected current end electricityRepeatedly determining the corresponding current pole wheel angle under the condition of pressureIn using the corresponding current pole wheel angle +.>To calculate a respective current optimum firing angle for the synchronous motor (1) and to control the thyristor regulator (4) in correspondence with the respective current optimum firing for operating the synchronous motor (1),
characterized in that the start-up of the synchronous motor (1) is carried out without prior alignment of the rotor (3).
2. The method according to claim 1,
characterized in that at least two phase currents (i U ，i V ，i W ) And when using the detected phase current (i U ，i V ，i W ) In the case of determining the corresponding current pole wheel angle
3. The method according to claim 1,
characterized in that at least two phase currents (i U ，i V ，i W ) And when using the detected phase current (i U ，i V ，i W ) The corresponding current firing angle is calculated.
4. The method according to claim 1 to 3,
wherein the voltage threshold is a minimum voltage characteristic value in which the pole wheel angle can be determined using the end voltage
5. The method according to claim 1 to 3,
characterized in that a torque window and a phase current window are predefined, and the respective current optimum firing angle is such that the torque acting on the rotor (3) in the case thereof is located inside the torque window, and each phase current (i U ，i V ，i W ) An ignition angle located inside the phase current window.
6. The method according to claim 1 to 3,
wherein the current space vector of the current pulse is changed with respect to the current space vector of the preceding current pulse if the voltage characteristic value does not exceed the voltage threshold value.
7. The method according to claim 1 to 3,
wherein the current space vector of each current pulse is changed relative to the current space vector of the current pulse preceding the current pulse as long as the voltage characteristic value does not exceed the voltage threshold value.
8. The method according to claim 6, wherein the method comprises,
characterized in that the current space vector of successive current pulses is rotated in the direction of rotation of the rotating field of the synchronous motor (1) when the current space vector is changed.
9. The method according to claim 6, wherein the method comprises,
wherein the current space vector is rotated by 60 degrees or a multiple of 60 degrees when changing the current space vector of successive current pulses.
10. The method according to claim 1 to 3,
the method is characterized in that a maximum number of changes is predefined, and if the number of changes in the current space vector of successive current pulses reaches the maximum number of changes without the voltage characteristic value exceeding the voltage threshold value, the energization of the stator winding with current pulses is terminated.
11. The method according to claim 1 to 3,
wherein a maximum number of current pulses is predefined and energizing the stator winding with current pulses is terminated if the number of current pulses reaches the maximum number of pulses without the voltage characteristic exceeding the voltage threshold.
12. The method according to claim 1 to 3,
wherein the voltage characteristic value is a maximum value of the magnitude of the detected terminal voltage or a magnitude of a voltage space vector formed by the terminal voltage.
13. A permanent magnet excited synchronous motor (1) without a rotary encoder system for detecting pole wheel angles, comprising:
a stator (2) with stator windings,
-a rotor (3),
-a thyristor regulator (4) for regulating the phase current (i U ，i V ，i W )，
-a voltage measuring device for detecting at least two terminal voltages of the synchronous motor (1), and
-a control unit (5) for controlling the thyristor regulator (4) according to the method according to any of the preceding claims.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2017/073005 WO2019052640A1 (en) | 2017-09-13 | 2017-09-13 | Operating a permanently excited synchronous machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111316561A CN111316561A (en) | 2020-06-19 |
| CN111316561B true CN111316561B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201780096601.9A Active CN111316561B (en) | 2017-09-13 | 2017-09-13 | Operation of a permanent magnet excited synchronous motor |
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|---|---|
| CN (1) | CN111316561B (en) |
| BR (1) | BR112020004974A2 (en) |
| DE (1) | DE112017008030A5 (en) |
| WO (1) | WO2019052640A1 (en) |
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| US11799411B2 (en) | 2021-08-31 | 2023-10-24 | Kinetic Technologies International Holdings Lp | Multi-phase permanent magnet rotor motor with independent phase coil windings |
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| CN102904510A (en) * | 2011-07-25 | 2013-01-30 | 阿思科尔控股责任有限公司 | Starting method for permanent magnet single-phase synchronous motor and electronic device for implementing same |
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| DE19820929A1 (en) * | 1998-05-09 | 1999-11-11 | Ako Werke Gmbh & Co | Device for controlling a single-phase synchronous motor |
| US7791307B2 (en) * | 2005-10-17 | 2010-09-07 | Siemens Industry, Inc. | AC motor controller |
| DE102008057701A1 (en) * | 2008-11-17 | 2010-05-20 | Siemens Aktiengesellschaft | Method of operating synchronous motors and associated equipment |
| DE102011085859A1 (en) | 2011-11-07 | 2013-05-08 | Siemens Aktiengesellschaft | Method and arrangement for operating synchronous motors |
| EP2634898A1 (en) * | 2012-03-01 | 2013-09-04 | Siemens Aktiengesellschaft | Method for operating an electric machine |
| DE102015208353A1 (en) * | 2015-05-06 | 2017-02-02 | Robert Bosch Gmbh | Method for switching on a multi-phase electric machine in a motor vehicle |
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2017
- 2017-09-13 DE DE112017008030.4T patent/DE112017008030A5/en active Pending
- 2017-09-13 WO PCT/EP2017/073005 patent/WO2019052640A1/en active Application Filing
- 2017-09-13 BR BR112020004974-3A patent/BR112020004974A2/en not_active Application Discontinuation
- 2017-09-13 CN CN201780096601.9A patent/CN111316561B/en active Active
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| CA2911858A1 (en) * | 2005-11-09 | 2007-05-09 | Regal Beloit America, Inc. | Electrical machine and method of controlling the same |
| CN102904510A (en) * | 2011-07-25 | 2013-01-30 | 阿思科尔控股责任有限公司 | Starting method for permanent magnet single-phase synchronous motor and electronic device for implementing same |
| CN102684595A (en) * | 2012-05-31 | 2012-09-19 | 杭州万工科技有限公司 | Self-anti-interference starting method for permanent magnetic synchronous motor |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111316561A (en) | 2020-06-19 |
| DE112017008030A5 (en) | 2020-07-02 |
| WO2019052640A1 (en) | 2019-03-21 |
| BR112020004974A2 (en) | 2020-09-15 |
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