EP3014762A2 - Method and device for operating an asynchronous machine, and an asynchronous machine - Google Patents
Method and device for operating an asynchronous machine, and an asynchronous machineInfo
- Publication number
- EP3014762A2 EP3014762A2 EP14728536.5A EP14728536A EP3014762A2 EP 3014762 A2 EP3014762 A2 EP 3014762A2 EP 14728536 A EP14728536 A EP 14728536A EP 3014762 A2 EP3014762 A2 EP 3014762A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnetic field
- target
- torque
- asynchronous machine
- magnetic flux
- 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
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000004907 flux Effects 0.000 claims abstract description 27
- 239000004065 semiconductor Substances 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/08—Controlling based on slip frequency, e.g. adding slip frequency and speed proportional frequency
-
- 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
Definitions
- the invention relates to a method for operating an asynchronous machine having a rotatably mounted rotor and a stator fixed to the housing, wherein a torque of the asynchronous machine by specifying a desired magnetic flux of a rotating magnetic field of the stator and by
- Presetting a desired slip between a rotor speed of the rotor and the rotational speed of the rotating magnetic field is set.
- the invention relates to a corresponding device for operating an asynchronous machine, which has a rotatably mounted rotor and a
- the means for adjusting the torque specifies a desired magnetic flux of a rotating magnetic field of the stator and a target slip between a rotor speed of the rotor and the rotational speed of the rotating magnetic field.
- the invention relates to a corresponding asynchronous machine.
- asynchronous machines depend on two variables, the magnetic flux of the magnetic field circulating around the stator and the slip between the rotor speed and the "rotational speed" of the rotating magnetic field
- a desired slip is so set that a rotational frequency of the rotating magnetic field
- the setpoint value of the rotational frequency of the stator field can be calculated to be 0 Hz, while a significant current flows through the stator.
- a limit for the operation of power electronics or the asynchronous machine driving device is the thermal capacity of the switching elements or circuit breaker.
- Machine for example, is still zero.
- the method according to the invention provides that, at least in a load case, alternatively whenever a target rotational frequency of the rotating stator of the stator is zero, the desired magnetic flux and / or the desired slip at constant torque are changed such that the Actual rotational frequency of the rotating magnetic field is not equal to zero, so that a minimum rotational frequency greater than zero is achieved.
- This is achieved in a simple and cost-effective manner, that the stator is not performed by a single circuit breaker for a long period of time, but alternately by different circuit breakers, whereby the power electronics is protected from thermal overload.
- the initially calculated set rotational frequency is correspondingly changed or not set to zero, or that the target rotational frequency, for example, an offset value is added, which leads to a corresponding rotational frequency.
- the setpoint slip is reduced while the torque remains the same and the setpoint magnetic flux, which is proportional to the stator current, is increased.
- the desired minimum rotational frequency of the circulating magnetic field is achieved with constant torque by reducing the desired slip and increasing the desired magnetic flux, which is proportional to the stator current.
- the desired minimum rotational frequency of the circulating magnetic field is achieved with a constant torque by increasing the desired slip and reducing the desired magnetic flux.
- the method according to the invention is carried out in a generator operation of the asynchronous machine.
- Asynchronous machine can be reduced overall.
- the device according to the invention with the features of claim 5 is characterized in that the device in the load case when the target rotational frequency of the rotating magnetic field of the stator is zero, the desired magnetic flux and / or the desired slip at constant torque changed so in that the actual rotational frequency is not equal to zero.
- the setpoint slip is reduced while the torque remains the same, and the desired magnetic flux is increased in order to bring the actual rotational frequency to a value not equal to zero. This will cause uneven thermal loading of circuit breakers of the device or the power electronics and motor phases bypassed. The performance or performance of the asynchronous machine is not affected.
- the setpoint slip is increased while the torque remains the same and the setpoint magnetic flux is reduced to the desired one
- the device has a bridge circuit, in particular a B6 bridge with six circuit breakers, in particular semiconductor switching elements or power semiconductor switches.
- Figure 1 shows an asynchronous machine in a simplified representation
- FIG. 2 shows an advantageous method for operating the asynchronous machine.
- FIG. 2 shows in a flowchart a method for operating an asynchronous machine 1, as illustrated by way of example and simplified in FIG. 1, which has a stator 2 fixed to the housing and a rotatably mounted rotor 3 and a device 4 for operation.
- the device 4 the
- Implementation of the method includes, inter alia, a device which is designed as power electronics 5, and in particular by specifying a desired magnetic flux of a rotating magnetic field of the stator and by specifying a target slip of the rotor, ie a difference between the rotor speed and speed of circulating magnetic field, a torque of the asynchronous machine 1 sets.
- the power electronics have a B6 bridge or bridge circuit which has six power semiconductor switches.
- the procedure provides that after commissioning a the
- Asynchronous machine 1 having drive device in a first step S1 first the desired torque is detected in a step S2.
- the setpoint magnetic flux and the setpoint slip are set in step S2.
- step S3 it is determined to which target rotational frequency the predetermined nominal magnetic flux and the predetermined nominal slip of the circulating magnetic field lead.
- a load case that is, for example, a torque request and the speed of the electric machine is equal to zero
- the determined target rotational frequency is checked whether it is equal to zero or not equal to zero.
- small deviations from zero are preferably also rated as zero value.
- the setpoint slip and / or the desired magnetic flux are changed in a step S6, wherein the desired torque determined in step S2 is maintained.
- the setpoint slip is reduced somewhat and the stator current, which is proportional to the desired magnetic flux, is increased somewhat.
- the desired slip can be increased and the desired magnetic flux can be reduced.
- the method is carried out when the asynchronous machine is operated as a generator.
- the procedure can be applied to both motor vehicles, the one
- Hybrid drive device with an internal combustion engine and at least one electric machine, as well as in motor vehicles, which have only at least one electric machine as a drive device, are performed.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310212054 DE102013212054A1 (en) | 2013-06-25 | 2013-06-25 | Method and device for operating an asynchronous machine, asynchronous machine |
PCT/EP2014/061525 WO2014206692A2 (en) | 2013-06-25 | 2014-06-04 | Method and device for operating an asynchronous machine, and an asynchronous machine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3014762A2 true EP3014762A2 (en) | 2016-05-04 |
Family
ID=50896283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14728536.5A Ceased EP3014762A2 (en) | 2013-06-25 | 2014-06-04 | Method and device for operating an asynchronous machine, and an asynchronous machine |
Country Status (6)
Country | Link |
---|---|
US (1) | US9641116B2 (en) |
EP (1) | EP3014762A2 (en) |
JP (1) | JP6383413B2 (en) |
CN (1) | CN105432014B (en) |
DE (1) | DE102013212054A1 (en) |
WO (1) | WO2014206692A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016206059A1 (en) | 2016-04-12 | 2017-10-12 | Zf Friedrichshafen Ag | Method and control unit for operating a rotating field machine at a standstill or starting a rotor of the induction machine, as well as vehicle drive train |
JP6694405B2 (en) * | 2017-03-17 | 2020-05-13 | 本田技研工業株式会社 | Control equipment for transportation equipment |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1389261A (en) | 1972-03-21 | 1975-04-03 | Litton Industrial Products | Method and means for controlling the output conditions of a self-excited alternating current motor |
JPS61196787A (en) * | 1985-02-25 | 1986-08-30 | Fanuc Ltd | Torque control system for induction motor |
US5334923A (en) * | 1990-10-01 | 1994-08-02 | Wisconsin Alumni Research Foundation | Motor torque control method and apparatus |
JP2817123B2 (en) * | 1991-12-17 | 1998-10-27 | 東洋電機製造株式会社 | Method and apparatus for adjusting magnetic flux of induction motor |
DE10102117A1 (en) * | 2001-01-18 | 2002-08-08 | Diehl Ako Stiftung Gmbh & Co | Procedure for quickly starting an asynchronous motor |
JP2003092803A (en) * | 2001-09-18 | 2003-03-28 | Hitachi Ltd | Electric motor car |
JP2005130601A (en) * | 2003-10-23 | 2005-05-19 | Toyo Electric Mfg Co Ltd | Induction machine controller |
DE102005034243A1 (en) * | 2005-07-21 | 2007-01-25 | Jungheinrich Ag | Method for encoderless speed determination of an asynchronous machine |
JP5168274B2 (en) | 2007-05-14 | 2013-03-21 | 富士通セミコンダクター株式会社 | Manufacturing method of semiconductor device |
JP5301905B2 (en) * | 2008-07-16 | 2013-09-25 | 株式会社豊田中央研究所 | Multi-phase rotating electrical machine drive device, multi-phase generator converter, multi-phase rotating electrical machine, and rotating electrical machine drive system |
CN101582677B (en) * | 2009-06-10 | 2010-10-27 | 重庆交通大学 | Motor non-speed sensor control method for smoothly switching composite rotating speed identification |
AT511134B1 (en) * | 2012-05-24 | 2013-12-15 | Voith Turbo Kg | Method for controlling the torque of an asynchronous machine |
-
2013
- 2013-06-25 DE DE201310212054 patent/DE102013212054A1/en not_active Withdrawn
-
2014
- 2014-06-04 WO PCT/EP2014/061525 patent/WO2014206692A2/en active Application Filing
- 2014-06-04 CN CN201480036056.0A patent/CN105432014B/en active Active
- 2014-06-04 JP JP2016522364A patent/JP6383413B2/en active Active
- 2014-06-04 EP EP14728536.5A patent/EP3014762A2/en not_active Ceased
- 2014-06-04 US US14/901,437 patent/US9641116B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2014206692A3 (en) | 2015-07-02 |
WO2014206692A2 (en) | 2014-12-31 |
CN105432014B (en) | 2018-11-27 |
CN105432014A (en) | 2016-03-23 |
JP2016523506A (en) | 2016-08-08 |
US20160156298A1 (en) | 2016-06-02 |
JP6383413B2 (en) | 2018-08-29 |
US9641116B2 (en) | 2017-05-02 |
DE102013212054A1 (en) | 2015-01-08 |
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