EP3698463A1 - Anordnung mit einer asynchronmaschine und verfahren zu deren betrieb - Google Patents
Anordnung mit einer asynchronmaschine und verfahren zu deren betriebInfo
- Publication number
- EP3698463A1 EP3698463A1 EP17826445.3A EP17826445A EP3698463A1 EP 3698463 A1 EP3698463 A1 EP 3698463A1 EP 17826445 A EP17826445 A EP 17826445A EP 3698463 A1 EP3698463 A1 EP 3698463A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- arrangement
- asynchronous machine
- stator
- rotor
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/007—Control circuits for doubly fed generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
-
- 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
-
- 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
Definitions
- the invention relates to an arrangement with an Asynchronma machine with a rotor and a stator, wherein the arrangement is set up in a generator mode for feeding electrical energy into an AC voltage network.
- Known power generation plants which are usually driven with tur bines, are at high nominal power na almost exclusively coupled via synchronous generators to the alternating voltage network.
- the alternating voltage network is usually an electrical supply or distribution network.
- the synchronous machine is a mechanical Turbi nenfrequenz to that of the electrical mains frequency or an integer divider thereof set.
- the fixed mechanical turbine frequency significantly limits the optimization of the drive with regard to efficiency, costs and performance.
- the object of the invention is to propose a kind of arrangement that is as cost effective and flexible in use.
- the object is erfindungsge accordance with an artful arrangement in that the asynchronous double-fed ge is operable, the asynchronous machine by means of a modular Mehrmenumrichters in matrix configuration with the AC mains is connectable, the modu lare Mehrmenumrichter in a motor operation of the arrangement to a start of Asynchronous short-circuiting of the rotor or the stator is set up.
- the asynchronous machine of the invention is to order a double-fed induction machine (Double Feed Induction Generator, DFIG).
- the asynchronous machine is connected in matrix configuration with the AC voltage network via the modular multistage converter.
- the modular multi-stage converter is characterized by a modular design.
- the modular multi-stage converter includes two-pole
- Switching modules which are switchable in series with each other, wherein each switching module comprises a power semiconductor circuit and egg nen own energy storage.
- Each of the switching modules can be controlled individually by means of a control device.
- a voltage dropping across a series connection of the switching modules is equal to the sum of voltages falling off the associated switching modules.
- the modular Mehrmenum judge is a particularly advantageous step-shaped Wech selledge generated.
- Matrix configuration is in the present context, a configuration of the multi-stage converter, in which a multi-phase output AC voltage is directly converted to the alternator in a multi-phase AC voltage, ie in particular without egg nen DC intermediate circuit.
- the advantage of scalability is the use of a modular multi-level converter in matrix configuration for connecting a DFIG to the AC power grid. Due to its scalability, the modular multi-stage converter can be adapted to the respective application and the respective asynchronous machine or DFIG using components of the same type become. This lowers the cost of the arrangement. Another advantage arises from the fact that the modular Mehrmenum judge the arrangement according to the invention must be designed for a lower rated power than the full converter of the known arrangement, which also provides a cost advantage. In addition, can be reduced by the already described advantageous sinusoidal shape of the voltage generated by means of the modular multistage voltage or current, the thermal loading of the asynchronous machine Chine.
- the modular multi-stage converter is set up in a motor operation of the arrangement for starting the asynchronous machine with short-circuiting of the rotor or the stator.
- the multi-stage converter is set up to remove electrical energy from the alternating voltage network during engine operation of the arrangement and to use it to start the Asynchron machine.
- the startup or startup of the Asyn chronmaschine or the connected turbine is doing un ter shorting of the rotor or the stator made.
- the invention is based on the finding that the modular multi-stage inverter in matrix configuration We sentlichen can only be operated technically meaningful if the at the input and output of the multi-stage converter he testified voltage frequencies are sufficiently different. Due to the configuration of the arrangement when driving the asynchronous machine, the multi-stage converter to generate an output voltage with a starting frequency that corresponds to the difference between the turbine frequency and the grid frequency in the AC mains or nearly equal (the slip is taken into account). At startup, the turbine frequency is initially zero so that the difference between turbine frequency and grid frequency is equal to or nearly equal to the grid frequency.
- the short-circuiting of the rotor or the stator is in this context understood as an electrical Ver bind, in particular low-resistance connecting the individual phases of the rotor or the stator (or the Ro torwicklept or the stator windings) with each other, so that the phases short-circuited, in particular sym metric shorted, are.
- the modular multi-stage converter is connected to the rotor of the asynchronous machine. At the same time is the
- the modular multi-stage converter can be designed for a relatively small rated power.
- the modular multi-stage converter is designed for a rated power that is 20% to 50% of a rated input power of the asynchronous machine.
- the input rated power corresponds, for example, to the mechanical rated power output by a turbine connected to a shaft of the asynchronous machine.
- the modular multi-stage converter can be selectively connected to the rotor or the stator of the asynchronous machine by means of suitable switching devices.
- the multi-stage converter feeds either on the rotor or on the stator.
- the short-circuiting of the rotor can be canceled, wherein the multi-stage converter is connected to the rotor.
- the arrangement comprises a Kurzschliesßvorraum for shorting the rotor or a short-circuiting device for short-circuiting of the stator, wherein the Kurzsch Stammvorrich device has at least one (possibly earthed) resistance element.
- the short-circuiting therefore takes place via a counterclaim.
- Both variants, namely the short-circuiting of the stator and the shorting of the rotor are reali sierbar in this way.
- the short-circuiting device may comprise one or more resistive elements in series with a suitable short-circuiting switch.
- the stator may be connectable to ground via the short-circuiting device. In such a case, the Mehrmenum judge expediently connected to the rotor or
- the multi-stage converter can advantageously be connected to the stator or the rotor by means of suitable switching devices.
- the short-circuiting switch is suitable for establishing or canceling the short circuit (possibly via resistors) and optionally a grounding.
- the Kurzsch.vorrich device comprises a plurality of resistive elements, which are connected to a (possibly grounded) star point. This represents a particularly effective variant of the short-circuiting device for a multiphase AC voltage connection.
- the multistage converter comprises a plurality of converter arms, each converter arm comprising a series circuit of bipolar switch modules, each of the switch modules having turn-off power semiconductor switches and an energy store.
- Each Umrichtarm expediently extends between a phase of a first multi-phase AC voltage terminal of the Mehreasenum richters and a phase of a second multi-phase alternating voltage connection of the multi-stage inverter.
- the power semiconductor switches may be, for example, IGBT, IGCT or the like.
- the multi-stage inverter has an n-phase first AC terminal connected to the asynchronous machine and an m-phase second AC terminal connected to the AC mains, each of the n phases of the AC input being connected to each of the m Phases of the second Messpan connection via exactly one of the inverter arms is connected.
- the connection to the AC voltage network can be done for example via a transformer.
- the power semiconductor switch short: semiconductor switch
- the energy storage of the switching modules each in a full bridge Circuit interconnected.
- a full bridge module scarf device is characterized in that two series circuits of two semiconductor switches are connected in parallel, wherein parallel to the series circuits of the semiconductor switches of the energy storage, usually in the form of a capacitor, is arranged.
- the full bridge module circuit has two terminal terminals or poles, one of which is arranged with a potential point between the semiconductor switches of one series circuit and the other one with a potential point between the semiconductor switches of the other series circuit.
- At the terminals of the semiconductor switching module is a drop in the energy storage or anste immediate energy storage voltage, a zero voltage or the inverse energy storage voltage can be generated.
- At least one charging resistor which is arranged in one of the converter arms and can be bridged by means of a bridging switch.
- the charging resistor was used to pre-charge the energy storage units of the switching modules.
- Each of the converter arms can be equipped with such Ladewi resistance.
- the multi-stage converter is connected via a transformer transformer to the AC mains.
- the arrangement may comprise further components, such as a grounding or short-circuiting device, and / or a neutral point generator for balancing unbalanced errors, which are arranged between the multi-stage converter and the transformer.
- the asynchronous machine is on the input side mechanically connected to a turbine of a conventional energy system.
- Turbi ne may be, for example, a gas turbine, a steam turbine or a turbine driven by water power.
- a startup of the turbine can advantageously be made possible by means of the multi-stage inverter from the AC voltage network voltage related electrical energy into a mechanical Rotational energy of the turbine is converted.
- the turbine is operable at a turbine frequency, wherein the turbine frequency and the frequency of the AC mains are different.
- a 50 Hz turbine can be operated by means of the arrangement in conjunction with a 60 Hz alternating voltage network (or vice versa).
- generators with Polzipiere greater than one can be connected to an AC voltage network different network frequency, where appropriate, in oversynchronous operation. This enables the operation of frequency-variable and mains-unsynchronized turbines.
- the arrangement comprises a control device for controlling the multi-stage converter.
- the regulating device is set up to regulate reactive power at the asynchronous machine and in the alternating voltage network.
- the arrangement itself by means of the modular multi-stage inverter neces sary reactive power can provide both on the network side and on the generator side.
- the invention further relates to a method for operating egg ner arrangement for feeding electrical energy into an AC voltage network with an asynchronous machine.
- the object of the invention is to propose such a procedural ren, which is as cost effective and flexible.
- the object is achieved according to the invention by a procedural ren, in which the asynchronous generator is operated in generator mode using a modular multi-stage inverter in matrix configuration, and on drive the asynchronous by means of modular multi-stage converter with shorting a rotor or a stator of the asynchronous machine is carried out.
- the essential advantages of the method according to the invention correspond to those which have already been described in connection with the arrangement according to the invention.
- the inventive method is especially against a start of the asynchronous machine by means of the multi-stage converter without short circuiting of the stator or the ro tor, ie in the same interconnection as in normal operation of the arrangement, advantageous. Because this would make sense from a minimum speed of the turbine of more than one third of the rated speed reasonable and economical.
- the method is to drive the asynchronous stator short-circuited, where at the rotor by means of the multi-stage converter with a driving frequency below a network frequency of the AC clamping voltage network is fed. Accordingly, for the initial run-up or starting a deviating operation of the energy generating Nor the configuration of the arrangement is set.
- the stator is short-circuited, for example by means of one of the previously described variants of the short-circuiting device. To short-circuit the stator of the sen phase lines or phase outputs miteinan are electrically connected.
- the multi-stage converter converts an electrical power from the AC voltage network and supplies it to the rotor, whereby the frequency of the supplied power or voltage generated by the multi-stage converter is lower than the mains frequency Initially, the starting frequency can be almost zero betra gene.
- a suitable control or control can be set a desired driving torque for the shaft of a connected turbine.
- the starting frequency is increased over time.
- the voltage and starting frequency generated by the multi-stage converter are suitably increased in accordance with a U / f characteristic of the asynchronous machine.
- a corresponding ramp slope and the duration of the run-up can expediently be so dimensioned or limited that the te to overcome the inertial te of components of the arrangement (for example, the turbine blades or asynchronous machine) and the resistors (essentially the turbine compressor ) required driving torque to a tilting torque of the asynchronous machine never exceeds.
- a slip frequency of the asynchronous machine is monitored.
- a rotor circuit current can be monitored.
- a torque-limiting control acting via the slip frequency is also conceivable.
- the startup frequency reaches or exceeds a predetermined frequency threshold
- the shorting of the stator is canceled and the stator is connected to the AC power grid.
- the cancellation of the short circuit and the connection to the AC mains can be carried out immediately or with a defined time delay. Also, the cancellation of the short circuit and the connection to the AC voltage network must not happen at the same time.
- the frequency threshold can be determined as a function of parameters of the asynchronous machine, such as, for example, the inductances of the asynchronous machine and / or of a modulation limit of the multistage converter and / or the design of the multistage converter.
- the rotor shortge is closed to start the asynchronous machine, wherein the stator is fed by means of the multi-stage converter with a starting frequency below a mains frequency of the AC voltage network.
- the short-circuiting of the rotor can be realized substantially similar to the short-circuiting of the stator.
- the starting frequency is increased over time.
- the voltage generated by the multi-stage converter and starting frequency in accordance with a U / f characteristic of the asynchronous machine are suitably increased in the course of this speed upramp.
- the corresponding ramp steepness and the duration of the run-up can be expediently dimensioned or be limited be that to overcome the moments of inertia of components of the assembly (for example, the turbine blades or asynchronous machine) and the resistors (essentially the turbine compressor ) required driving torque to a tilting torque of the asynchronous machine never exceeds.
- a slip frequency of the asynchronous machine is monitored.
- a rotor circuit current can be monitored.
- a torque-limiting control acting via the slip frequency is also conceivable.
- the startup frequency reaches or exceeds a predetermined frequency threshold
- the short circuit of the rotor is canceled, and the stator is connected to the AC power grid and the rotor is connected to the multi-stage inverter.
- the individual steps do not necessarily have to be carried out at the same time.
- the phase of the process until the frequency threshold is exceeded can also be referred to as the first start-up phase.
- a second start-up phase is provided. Accordingly, the starting frequency is further increased above the frequency threshold and fed the asynchronous machine by means of the multi-stage converter with the starting frequency until the starting frequency reaches a second frequency threshold.
- the multi-stage converter is operated by a motor.
- the interconnection corresponds to that used in normal operation of the arrangement (generator operation). Accordingly, in the second start-up phase, the turbine system continues to accelerates (for example within the scope of a suitable torque control) by means of Ro tor currents generated by the multi-stage converter with a suitable starting frequency and direction of rotation.
- the second frequency threshold is preferably close to the nominal speed of the asynchronous machine.
- the turbine can be used to assist throughout the described process or in individual parts.
- the support provided by the turbine can advantageously shorten the run-up time.
- the turbine may be fired at a starting frequency that is about 25% of the nominal turbine speed.
- a full turbine torque can be achieved at approximately 70% of the nominal speed.
- the motor operation of the asynchronous machine from the ignition of the turbine can be redu ed or terminated. It is conceivable to dispense with the second driving phase of the method by the turbine, after reaching the first frequency threshold value by the starting frequency, accelerating further on its own. In the meantime, in such a case, the pre-reconfiguring reconfiguration of the multi-stage converter to the normal or generator operation can already be brought forward in time.
- a third start-up phase defined who the.
- a transition to a normal or generator operation is performed.
- the control of the arrangement may change to a constant speed control mode.
- the control can be superordinate or inte grated into the multi-stage controller.
- the following division of the control functions may be useful here: - Fast converter control; the desired speed and / or the operating point are set by generating a generator of the opposite counteracting regenerative torque;
- a superordinate slow turbine control which serves to adjust the power and / or the Energyerzeu supply.
- Figure 1 shows a first embodiment of an inventions to the invention arrangement in a schematic representation
- Figure 2 shows a second embodiment of an inventions to the invention arrangement in a schematic representation
- Figure 3 shows an example of a modular multi-stage inverter in matrix configuration for the arrangements of Figures 1 and 2;
- Figure 4 shows an example of Umrichterarms the Mehrstu fenumrichters of Figure 3 in a schematic representation
- FIG. 5 shows an example of a switching module of the arrangement of FIGS. 1 to 4 in a schematic representation.
- Figure 6 shows a schematic flow diagram for an exemplary embodiment of a method according to the invention.
- an arrangement 1 is shown in Figure 1, by means of which a mechanical energy is provided at an output 2 of a turbine 3, umwan delbar in electrical energy and can be fed into an AC voltage network 4.
- the turbine 3 is a gas turbine and operates according to the example shown in FIG. 1 with a turbine frequency of 50 Hz.
- the mains frequency in the AC voltage network 4 in the example shown here is 60 Hz.
- the arrangement 1 comprises an asynchronous machine 5 in the form of egg nes doubly fed asynchronous generator (DFIG).
- DFIG doubly fed asynchronous generator
- Asychron machine 5 comprises a stator 6, which is connected directly to the alternating voltage network 4. Furthermore, the asynchronous machine 5 comprises a rotor 7 which is connected by means of slip rings 8a-c with and via optional smoothing inductances 9a-c (see FIG. 3) to a first, three-phase alternating voltage connection 11 of a modular multistage inverter 10 in matrix configuration.
- the stator 6 can be short-circuited by means of a short-circuiting device 17.
- the short-circuiting device 17 comprises a short-circuiting switch SR in series with three resistive elements Rs connected together in a grounded star point circuit 18. In general, earthing the short circuit is optional.
- the arrangement 1 further comprises a power switch Snetz and two further switches SN1 and SN2.
- the multi-stage converter 10 also has a second, three-phase AC voltage terminal 12, which is connected via a transformer 13 to the AC voltage network 4.
- the transformer 13 transforms the network-side clamping voltage at the multi-stage converter 10 in the example shown high on 25 kV.
- the arrangement 1 additionally comprises a regulating device 14 which is set up to regulate current and voltage both on the network side and on the rotor side of the multistage converter 10 by suitable control of power semiconductor switches of the multistage converter 10. Furthermore, a turbine control 15 is provided for controlling the turbine 3.
- a higher-level control device 16 is suitable, taking into account measured actual values from the alternating voltage network 4 to make a control of the switching devices of the order 1 and to influence the control of the turbine 3 and the multi-stage converter 10.
- the first switch SN1 and the second switch SN2 are closed.
- the short-circuit switch SR is open, so that the stator 6 verbun directly (via the transformer 13) with the AC voltage network 4 is the.
- the multi-stage converter 10 is placed in a motor operation of the arrangement 1 and feeds electrical power to the rotor 7.
- the multi-stage converter 10 At the first AC voltage connection 11, the multi-stage converter 10 generates an output voltage having a starting frequency which is initially close to zero and is increased over time. If the starting frequency in this process exceeds a predetermined frequency threshold, the short-circuiting switch SR opens and the first switch SN1 is closed.
- Other phases of start-up described above can be performed in this configuration of the arrangement.
- Figure 2 is a second embodiment of an Anord tion 20, by means of which a mechanical energy is provided at an output from a turbine 2 3, convertible into electrical energy and can be fed into an AC voltage network 4.
- a mechanical energy is provided at an output from a turbine 2 3, convertible into electrical energy and can be fed into an AC voltage network 4.
- Figures 1 and 2 the same and similar elements are provided with the same reference numerals. For reasons of clarity, therefore, in the following single Lich on the differences of the arrangements 1 and 20 a closer gone.
- the multi-stage converter 10 is connected to both the stator 6 - with means of a first auxiliary switch Be - and with the rotor 7 - by means of a second auxiliary switch Sc2 - connectable.
- the first switch SN1 and the second auxiliary switch Sc2 open.
- the first auxiliary switch Sei and the short-circuiting switch SR are closed.
- the rotor 7 is short-circuited and the multi-stage converter 10 feeds on the stator.
- the first switch SN1 and the second auxiliary switch Sc2 are closed, while the short-circuiting switch SR and the second auxiliary switch Sc2 ge opens.
- the multi-stage converter 10 feeds on the rotor 7, while the stator 6 is connected to the AC mains 4.
- FIG. 3 shows a modular multi-stage converter 10 in matrix configuration, which can be used for example in one of the arrangements 1 and 20 of FIGS. 1 and 2.
- the multi-stage converter 10 comprises nine converter arms A1-A9, wherein each one phase of the first AC voltage terminal lla-c is connected to one phase of the second AC voltage terminal 12a-c via one of the converter arms A1-A9. In the exemplary embodiment illustrated in FIG. 1, all the converter arms A1-A9 have a similar structure. On the construction on the converter arms A1-A9 is discussed in more detail in the following Figure 4.
- the multi-stage converter 10 further includes the phases of the first AC voltage terminal 11a-c to ordered smoothing inductances 9a-c.
- FIG. 4 shows an example of the structure of one of
- FIG. 4 shows a converter arm A which can be switched between a phase of a first AC voltage terminal 11 a-c and a phase of a second AC voltage terminal 12 a-c (see FIG.
- the Umrichterarm A includes a series switching two-pole switching modules SM, in the embodiment shown here, for example, all switching modules SM are constructed similar.
- the number of series-connected switching modules SM is basically arbitrary and can be adapted to the respective appli cation, which is indicated in Figure 4 by a dotted Li never L.
- In series with the switching modules SM Arminduktivi ity 21 is arranged.
- the converter arm A has a charging resistor 22, which can be bridged by means of a controllable switch 23
- FIG. 5 An example of a switching module SM in the form of a full bridge module circuit 101 is shown schematically in Figure 5.
- the full bridge circuit 101 has a first semiconductor switch 102 in the form of an IGBT to which a first freewheeling diode 103 is connected in antiparallel and a second semicon terschalter 104 in the form of an IGBT, the second freewheeling diode 105 is connected in antiparallel.
- the forward direction of the two semiconductor switches 102 and 104 is tet Gleichgerich.
- the full bridge circuit 101 comprises a th th semiconductor switch 109 in the form of an IGBT, the th third freewheeling diode 110 is connected in antiparallel and a fourth semiconductor switch 111 in the form of an IGBT, the fourth freewheeling diode 112 is connected in antiparallel.
- a first pole or connection XI of the switching module SM is arranged at a potential point 113 between the semiconductor switches 102, 104, and a second pole or connection X2 of the switching module SM is arranged at a potential point 114 between the semiconductor switches 109, 111.
- the voltage present at the terminals XI, X2 can be generated, but the voltage at the capacitor 106 rising voltage Uc, but the voltage dropping across the capacitor 106 voltage with opposite polarity (- Uc) or zero voltage.
- IGCT opposite polarity
- FIG. 6 shows a flow chart.
- the flow chart illustrates an exemplary embodiment of a method for operating one of the arrangements of FIGS. 1 or 2.
- a first method step 201 the stator or the rotor of the asynchronous machine is short-circuited. If the stator is short-circuited, the multi-stage inverter is connected to the rotor. If the rotor is short-circuited, the multi-stage inverter is connected to the stator.
- a second method step 202 the Asyn chronmaschine by means of the Mehreasenumrichters in a Mo door operation with a starting frequency below a Netzfre frequency of the AC voltage network fed.
- the starting frequency is increased in time.
- a third method step 203 after the driving frequency to a predetermined frequency threshold he goes or exceeds, the short-circuiting of the stator or the rotor canceled.
- the stator is connected in such a way that it is connected to the AC mains.
- the multi-speed converter feeds on the rotor.
- a fourth method step 204 the starting frequency is further increased above the frequency threshold value.
- the asynchronous machine is fed by means of the multi-stage converter with the starting frequency until the starting frequency reaches a second frequency threshold.
- the second frequency threshold is close to a nominal frequency of the turbine.
- a fifth method step 205 the generator mode is switched so that the energy generated by means of the turbine is converted into electrical energy and fed into the AC voltage network.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2017/081550 WO2019110090A1 (de) | 2017-12-05 | 2017-12-05 | Anordnung mit einer asynchronmaschine und verfahren zu deren betrieb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3698463A1 true EP3698463A1 (de) | 2020-08-26 |
Family
ID=60953810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17826445.3A Ceased EP3698463A1 (de) | 2017-12-05 | 2017-12-05 | Anordnung mit einer asynchronmaschine und verfahren zu deren betrieb |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US11482956B2 (de) |
| EP (1) | EP3698463A1 (de) |
| WO (1) | WO2019110090A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES3048485T3 (en) * | 2019-08-13 | 2025-12-10 | Vestas Wind Sys As | Intelligent discharge control for modular multilevel converter |
| WO2021132456A1 (ja) * | 2019-12-26 | 2021-07-01 | 大日本印刷株式会社 | 金属調加飾シート及びこれを備える金属調加飾成形体 |
| US12246556B2 (en) * | 2019-12-27 | 2025-03-11 | Dai Nippon Printing Co., Ltd. | Metal tone decorative sheet and metal tone decorative molded body provided with metal tone decorative sheet |
| EP3965248A1 (de) * | 2020-09-02 | 2022-03-09 | Siemens Energy Global GmbH & Co. KG | Anordnung und verfahren zum stabilisieren eines wechselspannungsnetzes |
| CN114977832B (zh) * | 2022-06-22 | 2025-02-07 | 国网浙江省电力有限公司电力科学研究院 | 模块化多电平矩阵式换流器的桥臂及桥臂电抗器布置方法 |
| FR3145071B1 (fr) * | 2023-01-13 | 2025-01-10 | Skf Magnetic Mechatronics | Procédé de compensation de puissance réactive, système de commande associé et circuit pilote de capteur |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1284045A1 (de) | 2000-05-23 | 2003-02-19 | Vestas Wind System A/S | Windturbine variabler geschwindigkeit mit einem matrixwandler |
| EP1679787A1 (de) | 2005-01-07 | 2006-07-12 | Siemens Aktiengesellschaft | Stromaggregat und Verfahren zur Erzeugung von Strom einer vorbestimmten Netzfrequenz |
| KR100886194B1 (ko) | 2007-06-08 | 2009-02-27 | 한국전기연구원 | 계통 연계형 고압 권선형 유도 발전기 제어 장치 |
| WO2009118433A1 (es) | 2008-03-28 | 2009-10-01 | Ingeteam Energy, S.A. | Método y sistema para operar un aerogenerador |
| US8987926B2 (en) * | 2013-03-13 | 2015-03-24 | General Electric Company | Systems and methods for variable speed operation of combustion engines |
| DE102013208067B4 (de) * | 2013-05-02 | 2022-01-13 | Ge Energy Power Conversion Gmbh | Mehrphasige elektrische Schaltung |
| US11101755B2 (en) * | 2017-07-21 | 2021-08-24 | Siemens Aktiengesellschaft | Arrangement for injecting electric power into an AC network by means of an asynchronous machine, and method for operating the asynchronous machine |
-
2017
- 2017-12-05 WO PCT/EP2017/081550 patent/WO2019110090A1/de not_active Ceased
- 2017-12-05 EP EP17826445.3A patent/EP3698463A1/de not_active Ceased
- 2017-12-05 US US16/770,177 patent/US11482956B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019110090A1 (de) | 2019-06-13 |
| US11482956B2 (en) | 2022-10-25 |
| US20210167705A1 (en) | 2021-06-03 |
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