CN203859713U - Control device for synchronous machine - Google Patents
Control device for synchronous machine Download PDFInfo
- Publication number
- CN203859713U CN203859713U CN201320412693.6U CN201320412693U CN203859713U CN 203859713 U CN203859713 U CN 203859713U CN 201320412693 U CN201320412693 U CN 201320412693U CN 203859713 U CN203859713 U CN 203859713U
- Authority
- CN
- China
- Prior art keywords
- converting unit
- synchronous motor
- plc
- control device
- programmable logic
- 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.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
- H02P6/085—Arrangements for controlling the speed or torque of a single motor in a bridge configuration
-
- 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
- H02P27/06—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 dc to ac converters or inverters
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/008—Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators
-
- 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
- H02P2207/05—Synchronous machines, e.g. with permanent magnets or DC excitation
-
- 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
- H02P27/05—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 supply for both the rotor and the stator circuits, the frequency of supply to at least one circuit being variable
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The utility model relates to a control device for a synchronous machine, wherein the synchronous machine is in a separation excitation mode. The control device comprises: a first conversion unit, which is arranged in a mode of being connected to a stator of the synchronous machine; and a second conversion unit, which is arranged in a mode of being connected to a rotor of the synchronous machine to excite the device. The first conversion unit has an inverter that is configured to produce or receive an alternating-current voltage; and the second conversion unit is selectively configured in a configurable mode to generate an alternating current or direct current so as to excite the rotor of the synchronous machine. Besides, the device also has a programmable logic controller that is connected to the first conversion unit and the second conversion unit, so that the first conversion unit and the second conversion unit are controlled as drivers of the synchronous machine and configuration is carried out on the first conversion unit and the second conversion unit.
Description
Technical field
The utility model relates to a kind of synchronous motor and relates in particular to by means of simple mechanism to be controlled separate excitation synchronous motor.
Background technology
Synchronous motor conventionally use industry, need in high-power driver for example motor in cement plant, mine, dismounting factory and as the generator in energy harvesting equipment.Typically, use in the following manner synchronous motor, make synchronous motor with constant speed rotation and export or otherwise, for example, regulate operation by means of adjuster valve by transmission control operation.
The operation of synchronous motor also can be controlled by means of frequency converter.Realize relatively frequency inverted driver with separate excitation synchronous motor, independent converting unit is connected on the energized circuit and stator loop of synchronous motor.The object that is connected to the converting unit on energized circuit is to provide the excitation of rotor, to such an extent as to described converting unit is fed to electric current to the magnetic pole winding that excitation is provided.In the time that synchronous motor act as motor, be connected to frequency converter on stator loop in one side to stator feed power, to form the magnetic field that the mode to expect is rotated; And in the time that correspondingly synchronous motor act as generator, the frequency converter being connected on stator loop is used as power transformer and receives in known manner the energy producing by means of generator.
Fig. 1 illustrates that for according to the principle of the control device of the separate excitation synchronous motor of prior art, wherein synchronous motor 1 is controlled by frequency converter 2 and driver transformer 3.Frequency converter 2 and driver transformer 3 are all connected on three phase supply net 4.Three phase converter 2 is connected on the stator of machine, and driver transformer produces the direct current for the rotor of machine, to encourage described machine.
By in the magnetic pole winding of direct current feed-in rotor, its rotor is provided with the magnetic pole rotating along with rotor.To in direct current feed-in rotor, can carry out by means of brush, or encourage execution by brushless.When using when brush, rotor outside, produce whole excitation winding current and will be transferred to for the energy that excitation consumes the rotor of rotation, to such an extent as to via the carbon brush conveying electric current that is arranged on epitrochanterian collector ring and the described ring of friction.
In brushless excitation, the needed electric current of magnetic pole winding produces by means of being arranged on epitrochanterian excitation set.In this case, with the rotor coaxial of synchronous motor locate the rotor winding of excitation set and the magnetic pole winding of stator surrounding excitation set.When the rotor winding of excitation set is during along with the rotor of main frame, the voltage of inducting and being rectified by means of being arranged on epitrochanterian rectifier in rotor winding.Rectifier output end is further connected on the magnetic pole winding of main frame, therefore magnetic pole winding feeding DC is flowed, and is provided for the magnetic pole of synchronous motor.
The shortcoming of the current equipment for control synchro is, needs two dissimilar frequency converters in order to control, and is connected to or rather frequency converter on stator and for encouraging the driver transformer of rotor.The cost of the maintenance of two different mechanisms and maintenance and described mechanism is the remarkable shortcoming in known solution.
Utility model content
Basic object of the present utility model is that a kind of device that can eliminate shortcoming proposed above is provided.The purpose of this utility model realizes by means of the device of described in this article feature.Preferred implementing form of the present utility model is theme below.
The utility model based on thought be to use converter unit to produce for the exciting current of separate excitation synchronous motor.Therefore it can be similar, being connected on stator loop and transducer that be connected on rotor loop.The converter unit that produces exciting current for rotor is configured by rights, makes to produce alternating voltage or to produce direct voltage according to the energisation mode of rotor by means of frequency converter.In addition, control two converting units with common control device in the utility model, wherein the control of synchronous motor driver is simple, and converting unit is considered as unique controllable device by user.
Enumerate feature of the present utility model with the form of numbering below:
Aspect 1. is for the control device of synchronous motor (21), wherein said synchronous motor (21) is separate excitation, described control device has: the first converting unit (22) arranging in the mode that can be connected on the stator of described synchronous motor, with the second converting unit (24) arranging in the epitrochanterian mode that can be connected to described synchronous motor, to encourage described device, wherein said the first converting unit (21) has the inverter that is set to for generation of or receives alternating voltage, it is characterized in that
Described the second converting unit (24) can selectively be set in the mode that can configure, make described the second converting unit produce alternating current or produce the excitation of direct current for the described rotor of described synchronous motor, and described device also has programmable logic controller (PLC) (PLC), described programmable logic controller (PLC) is connected in described the first converting unit (21) and described the second converting unit (24), to described the first converting unit and described the second converting unit are controlled and described the first converting unit and described the second converting unit are configured as synchronous motor driver.
Aspect 2., according to the control device for synchronous motor described in aspect 1, is characterized in that, the structure of described the second converting unit (24) is corresponding to the structure of described the first converting unit (21).
Aspect 3., according to the control device for synchronous motor described in aspect 1 or 2, is characterized in that, described the second converting unit (24) has inverter.
Aspect 4. is according to the control device for synchronous motor described in aspect 3, it is characterized in that, described programmable logic controller (PLC) (PLC) is set to regulate the parameter of described the second converting unit (24), makes the described inverter of described the second converting unit produce the direct current for the described rotor of described separate excitation synchronous motor.
Aspect 5. is according to the control device for synchronous motor described in aspect 3, it is characterized in that, described programmable logic controller (PLC) (PLC) is set to be converted to frequency reference value and the flux reference in the described inverter that is fed into described the second converting unit (24) for its given current reference value.
Aspect 6. is according to the control device for synchronous motor described in aspect 1 or 2, it is characterized in that, described device has net inverter (25) and direct voltage intermediate loop (23) in addition, wherein said net inverter is arranged between electrical network (26) and described direct voltage intermediate loop (23) with the form that can connect, and wherein said the first converting unit (21) and described the second converting unit (24) are all the inverters being connected in identical direct voltage intermediate loop.
Aspect 7. is according to the control device for synchronous motor described in aspect 1 or 2, it is characterized in that, described the first converting unit (21) and described the second converting unit (24) are the frequency converters that comprises inverter, and wherein said frequency converter arranges in the mode that can be connected to electrical network.
Aspect 8., according to the control device for synchronous motor described in aspect 1 or 2, is characterized in that, described programmable logic controller (PLC) (PLC) is set to, and for user provides described synchronous motor driver, makes the frequency inverted driver that provides unique.
Aspect 9., according to the control device for synchronous motor described in aspect 1 or 2, is characterized in that, described programmable logic controller (PLC) is the independent programmable logic controller (PLC) (PLC) that is connected to described the first converting unit and described the second converting unit.
Aspect 10., according to the control device for synchronous motor described in aspect 1 or 2, is characterized in that, described programmable logic controller (PLC) is the programmable logic controller (PLC) of the inside of one in described the first converting unit and described the second converting unit.
The advantage of mechanism of the present utility model is can significantly save maintenance and the maintenance cost of mechanism, because the convertor assembly needing in synchronous motor driver is similar or or even identical.
Brief description of the drawings
Now, describe the utility model with reference to the accompanying drawing of enclosing in detail in conjunction with preferred form of implementation, accompanying drawing illustrates:
Fig. 1 illustrates the synchronous motor driver according to prior art; And
Fig. 2 illustrates the theory structure according to mechanism of the present utility model.
Embodiment
Fig. 2 illustrates the theory structure according to mechanism of the present utility model.The first converting unit 22 is connected on synchronous motor 21, described the first converting unit is inverter and in the time that machine is motor, produce the stator current of synchronous motor by means of described the first converting unit, and in the time that correspondingly machine is generator, converting unit act as along the rectifier towards electrical network direction feed-in power.Inverter is connected in the direct voltage intermediate loop of the capacitor cell being made up of one or more capacitors 23 with intermediate loop.Inverter, that is to say that inverter comprises the phase place output of multiple series circuits with gate-controlled switch.Described series circuit is connected between the positive supply rail and negative supply rail of direct voltage intermediate loop.In the time alternately controlling gate-controlled switch top and series connection bottom, can on phase place output, apply positive voltage or the negative voltage of intermediate loop.In the time extending or shorten the duration of the pulse forming by this way, can on phase place output, produce fifty-fifty the voltage of expecting.In the time producing for the stator voltage as the synchronous motor of motor or stator current, typically modulate gate-controlled switch, make stator be provided with the electric current of sinusoidal variations.In Fig. 2, do not illustrated more accurately for the control device of inverter, because described control device is to be apparent for those skilled in the art.
Fig. 2 also illustrates with the first converting unit and is connected in the same manner the second converting unit 24 in direct voltage intermediate loop.It is not alternating voltage or direct voltage that converting unit is illustrated the output making for the rotor loop of synchronous motor in Fig. 2.According to thought of the present utility model, the structure of the second converting unit corresponding to the first converting unit, that is to say the structure of inverter.Therefore, the second converting unit is structurally configured to inverter, but described equipment can be used as to the DC current source of replacement standard inverter by the parameter of set device.Carry out the setting of the parameter of the second converting unit according to the energisation mode of separate excitation synchronous motor.If by means of brush excitation synchronous motor, be provided with so the second converting unit as controlled DC current source, if do not apply the excitation of brushless in synchronous motor, the second converting unit act as and makes it produce alternating current so.
Fig. 2 illustrates that the first and second converting units are as the inverter being connected on common voltage intermediate circuit.But converting unit can be also frequency translation unit, and in the case, two converting units have rectifier and the direct voltage intermediate loop of himself.In form of implementation, common rectification unit 25 produces the direct voltage from electrical network 26 to direct voltage intermediate loop shown in figure 2.Have in the form of implementation of rectifier of himself two converting units, it is online that described rectifier is connected to alternating voltage in the corresponding way.
In the form of implementation of Fig. 2, programmable logic controller (PLC) PLC or corresponding process control equipment are connected with two converting units.Described programmable logic controller (PLC) is configured to user interface the entirety being made up of transducer in the following manner, makes to manage synchronous motor driver by means of programmable logic controller (PLC).Programmable logic controller (PLC), by the function combination of independent frequency converter, is wherein realized the controller being arranged by programmable logic controller (PLC) on current transformer in an identical manner.Therefore, user does not need to control two independent current transformers, so that control synchro driver.
Programmable logic controller (PLC) comprises that the program with the function for arranging according to synchronous motor driver of the present utility model with the function of the independent converting unit of the control of carry out desired, for example, starts, stops, rotating speed is controlled to particular value or emergent stopping.For example on two current transformers, start operation by the given initiation command of programmable logic device, the object of described operation is starting synchronous motor driver.According to described order, carry out the excitation of rotor by means of the second converting unit, and in the time having encouraged, by means of the first converting unit, stator current is conducted to the stator to machine.
Also can change rapidly converting unit by using programmable logic controller (PLC).If transducer is the standard cell that can change in synchronous motor driver, can determines required parameter for converting unit by means of programmable logic controller (PLC) so and change.
Fig. 2 illustrate as independent equipment, be connected to the programmable logic controller (PLC) in converting unit by means of applicable bus.Programmable logic controller (PLC) can be also a part for the function of the first or second converting unit.Be known that, inverter has the programmable logic controller (PLC) as unit standard or alternative, utilize programmable logic controller (PLC) described in these to there is identical function and unit, utilize these programmable logic controller (PLC)s and utilize that independent programmable logic controller (PLC) is the same can carry out identical function and program.Therefore, one in converting unit can be used as main equipment, carries out relatively the control of synchronous motor driver in the corresponding way as with independent programmable logic controller (PLC) by described converting unit.
Fig. 2 illustrates, how synchronous motor driver can be connected via programmable logic controller (PLC) with Process Control System 27 in addition.Process Control System can be process computation device or the corresponding more control device of upper level, and synchronous motor driver is controlled via described control device.
If the excitation of synchronous motor is implemented by means of brush, so typically rotor must feed-in have direct current.Can regulate inverter to act as direct current regulator by parametrization.That is to say, be structurally that the second converting unit of inverter causes, for the rotor of synchronous motor produces required exciting current.Some inverters for example have the DC drive characteristic that is provided for encouraging bypass motor, therefore in starter, realize large as far as possible torque.In the utility model, make full use of this DC excitation or the similar function of inverter, and because described characteristic can replace independent driver transformer by conventional inverter.
In inverter, the DC excitation of the transformable parameter with inverter of bringing into operation.By means of described parameter, can set the size and Orientation of exciting current, exciting current should flow through which output phase of inverter.Typically, the inverter of standard is three-phase equipment, so in output phase only two be connected on excitation winding, and the through-flow of exciting current be directed through excitation winding via described phase place, i.e. time magnetic pole winding.Can regulate the size of exciting current, to such an extent as to the through-flow time variation of the switch of inverter, and the voltage of the intermediate loop of feed-in electric current keeps substantially constant.
If being activated in the situation that there is no carbon brush of synchronous motor carried out, the rotor of excitation set is connected on the rotor of synchronous motor so, and on the rotor of described excitation set, shape is given birth to exciting current in the manner described above.Rectifier is also connected on rotor, to the alternating current rectification being produced by excitation set.This excitation system typically feed-in has alternating current, and described alternating current is rectified and is fed in the stator of excitation set.Therefore, comprise that by the second converting unit inverter is by the energized circuit of alternating current or alternating voltage feed-in synchronous motor.Described alternating current is rectified by means of rectifier in synchronous motor, be fed in the stator winding of excitation set, the described stator winding alternating voltage of inducting in the rotor winding of excitation set, described alternating voltage is rectified and is fed in the magnetic pole winding of synchronous motor, so that the rotor of excitation synchronous motor.
Encourage relatively with brushless, inverter or frequency converter can be configured to work in grade adjusting pattern, wherein allow the voltage to being fed in energized circuit to regulate.For programming for the programmable logic controller (PLC) that regulates magnetic pole winding current, make to change the reference value of the magnetic pole winding current in programmable logic controller (PLC), for producing frequency reference value or speed reference and flux reference for inverter.In other words, the given reference value that relates to magnetic pole winding current or exciting current of programmable logic controller (PLC), described reference value is converted to the reference value for inverter by programmable logic controller (PLC), to realize the magnetic pole winding current of expecting.
Also contemplated that, be the excitation of rectifier feed-in direct current for excitation set as the inverter of the second converting unit, because direct current can flow through rectifier bridge unchangeably.In the case, as above with excitation relatively, can regulate by means of brush the stator current of excitation set.
Above-mentioned energisation mode and the approach that relates to the electric current that formation will be used for encouraging are not the possibilities of unique execution excitation, and described approach can be understood to bring the possibility according to solution of the present utility model.In the time that the utility model relates to the following application design of synchronous motor; be not described in detail the measurement relevant to application, protection and the function of synchronous motor and adjusting, in described application design by means of the transducer of controlling two independent equipment preferably with inverter as the common adjusting driver of programmable logic controller (PLC).
It will be apparent to one skilled in the art that basic thought of the present utility model can be realized in a different manner in the time of technique progress.Therefore, the utility model and form of implementation thereof are not limited to above-described example, but can change within the scope of the claims.
Claims (10)
1. for the control device of synchronous motor (21), wherein said synchronous motor (21) is separate excitation, described control device has: the first converting unit (22) arranging in the mode that can be connected on the stator of described synchronous motor, with the second converting unit (24) arranging in the epitrochanterian mode that can be connected to described synchronous motor, to encourage described device, wherein said the first converting unit (21) has the inverter that is set to for generation of or receives alternating voltage, it is characterized in that
Described the second converting unit (24) can selectively be set in the mode that can configure, make described the second converting unit produce alternating current or produce the excitation of direct current for the described rotor of described synchronous motor, and described device also has programmable logic controller (PLC) (PLC), described programmable logic controller (PLC) is connected in described the first converting unit (21) and described the second converting unit (24), to described the first converting unit and described the second converting unit are controlled and described the first converting unit and described the second converting unit are configured as synchronous motor driver.
2. the control device for synchronous motor according to claim 1, is characterized in that, the structure of described the second converting unit (24) is corresponding to the structure of described the first converting unit (21).
3. the control device for synchronous motor according to claim 1 and 2, is characterized in that, described the second converting unit (24) has inverter.
4. the control device for synchronous motor according to claim 3, it is characterized in that, described programmable logic controller (PLC) (PLC) is set to regulate the parameter of described the second converting unit (24), makes the described inverter of described the second converting unit produce the direct current for the described rotor of described separate excitation synchronous motor.
5. the control device for synchronous motor according to claim 3, it is characterized in that, described programmable logic controller (PLC) (PLC) is set to be converted to frequency reference value and the flux reference in the described inverter that is fed into described the second converting unit (24) for its given current reference value.
6. the control device for synchronous motor according to claim 1 and 2, it is characterized in that, described device has net inverter (25) and direct voltage intermediate loop (23) in addition, wherein said net inverter is arranged between electrical network (26) and described direct voltage intermediate loop (23) with the form that can connect, and wherein said the first converting unit (21) and described the second converting unit (24) are all the inverters being connected in identical direct voltage intermediate loop.
7. the control device for synchronous motor according to claim 1 and 2, it is characterized in that, described the first converting unit (21) and described the second converting unit (24) are the frequency converters that comprises inverter, and wherein said frequency converter arranges in the mode that can be connected to electrical network.
8. the control device for synchronous motor according to claim 1 and 2, is characterized in that, described programmable logic controller (PLC) (PLC) is set to, and for user provides described synchronous motor driver, makes the frequency inverted driver that provides unique.
9. the control device for synchronous motor according to claim 1 and 2, is characterized in that, described programmable logic controller (PLC) is the independent programmable logic controller (PLC) (PLC) that is connected to described the first converting unit and described the second converting unit.
10. the control device for synchronous motor according to claim 1 and 2, is characterized in that, described programmable logic controller (PLC) is the programmable logic controller (PLC) of the inside of one in described the first converting unit and described the second converting unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20134101U FI10120U1 (en) | 2013-04-23 | 2013-04-23 | Synchronous machine control system |
| FIU20134101 | 2013-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203859713U true CN203859713U (en) | 2014-10-01 |
Family
ID=48748615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320412693.6U Expired - Lifetime CN203859713U (en) | 2013-04-23 | 2013-07-11 | Control device for synchronous machine |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN203859713U (en) |
| DE (1) | DE202013102392U1 (en) |
| FI (1) | FI10120U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113824269A (en) * | 2020-06-18 | 2021-12-21 | 奥迪股份公司 | Inverter with a voltage regulator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2911288A1 (en) * | 2014-02-20 | 2015-08-26 | ABB Technology AG | Separately excited synchronous machine with excitation supplied from dc-link of stator inverter |
-
2013
- 2013-04-23 FI FI20134101U patent/FI10120U1/en active IP Right Grant
- 2013-06-04 DE DE202013102392U patent/DE202013102392U1/en not_active Expired - Lifetime
- 2013-07-11 CN CN201320412693.6U patent/CN203859713U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113824269A (en) * | 2020-06-18 | 2021-12-21 | 奥迪股份公司 | Inverter with a voltage regulator |
Also Published As
| Publication number | Publication date |
|---|---|
| FI10120U1 (en) | 2013-06-12 |
| DE202013102392U1 (en) | 2013-06-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181122 Address after: Baden, Switzerland Patentee after: ABB Switzerland Co.,Ltd. Address before: Helsinki Patentee before: ABB Inc. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141001 |
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| CX01 | Expiry of patent term |