EP4066372A1 - Steuereinrichtung, wechselrichter, anordnung mit einem wechselrichter und einer elektrischen maschine, verfahren zum betreiben eines wechselrichters sowie computerprogramm - Google Patents
Steuereinrichtung, wechselrichter, anordnung mit einem wechselrichter und einer elektrischen maschine, verfahren zum betreiben eines wechselrichters sowie computerprogrammInfo
- Publication number
- EP4066372A1 EP4066372A1 EP20812251.5A EP20812251A EP4066372A1 EP 4066372 A1 EP4066372 A1 EP 4066372A1 EP 20812251 A EP20812251 A EP 20812251A EP 4066372 A1 EP4066372 A1 EP 4066372A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control device
- modulation
- inverter
- type
- operating parameter
- 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.)
- Pending
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
- 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
- H02P27/08—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 with pulse width modulation
- H02P27/085—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 with pulse width modulation wherein the PWM mode is adapted on the running conditions of the motor, e.g. the switching 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
- H02P27/08—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 with pulse width modulation
-
- 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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
-
- 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
- H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
Definitions
- Control device inverter, arrangement with an inverter and an electrical machine, method for operating an inverter and computer program
- the present invention relates to a control device for an inverter feeding an electrical machine, the control device being set up to provide pulse-width-modulated switching signals for controlling switching elements of the inverter.
- the invention relates to an inverter, an arrangement with an inverter and an electrical machine, a method for operating an inverter and a computer program.
- switching losses inevitably arise, which have a strong influence on the overall efficiency of an arrangement made up of the inverter and an electrical machine.
- the switching losses can make up a significant proportion of the inverter losses.
- a peak-valley value of a DC link voltage of the inverter is a limitation that must be strictly observed.
- the lower the maximum permissible peak-valley value the greater the DC link capacitance of the inverter must be.
- an intermediate circuit capacitor is required, which in turn is undesirable.
- the invention is therefore based on the object of specifying a possibility for reducing switching losses during operation and / or for reducing the required inter mediate circuit capacity.
- control device of the type mentioned at the outset in that the control device is set up to assign a type of modulation by means of which the pulse-width-modulated switching signals are generated, depending on operating point information that describes an operating point defined by at least one operating parameter determine men and to use a first type of modulation in at least a first work area and a second type of modulation in a further work area.
- the invention is based on the knowledge that different types of modulation cause switching losses of different magnitudes on the one hand, but also result in different peak-valley values of an intermediate circuit voltage depending on the operating point defined by the at least one operating parameter.
- the invention therefore proposes using the first type of modulation in at least one first working range in which the second type of modulation, which typically causes lower switching losses, generates excessively high peak-valley values of the intermediate circuit voltage.
- the invention thus allows a reduction in the switching losses during operation of the inverter with an essentially unchanged maximum peak-valley value of the intermediate circuit voltage occurring over all working points.
- the first type of modulation is a continuous type of pulse width modulation, in particular SVM (Space Vector Modulation).
- the second type of modulation can be discontinuous Pulse width modulation type, in particular GDPWM (Generalized Discontinous Pulse Width Modulation).
- an operating parameter is a torque of the electrical machine or a current strength of a machine current of the electrical machine.
- a first working area or a plurality of first working areas lies within an operating parameter interval defined by a lower operating parameter limit and an upper operating parameter limit. It was found experimentally and simulatively that the second type of modulation can be replaced by the first type of modulation under typical operating conditions from a certain amount of torque or the current strength of the machine current to reduce the peak-valley value of the intermediate circuit voltage.
- the operating parameter limit which is smaller in terms of amount, is typically at least 10%, preferably at least 25%, particularly preferably at least 40%, of a maximum value of the operating parameter in terms of amount.
- the operating parameter limits of the or a respective first work area have the same sign. For positive and / or negative operating parameters, several first working areas, each with an operating parameter interval, can be provided.
- the first work area or the first work areas are limited by the operating parameter interval or the operating parameter intervals.
- an operating parameter is a speed of the electrical machine.
- the at least one first working range lies within a speed interval defined by a lower speed limit and an upper speed limit.
- the second type of modulation can be replaced by the first type of modulation under typical operating conditions for certain speed values to reduce the peak-valley value of the intermediate circuit voltage.
- the lower speed limit is at least 5%, preferably at least 10%, particularly preferably at least 15%, of a maximum speed.
- the or a respective working range is limited by the speed interval and / or the operating parameter interval related to the torque or the current intensity.
- an operating parameter is an intermediate circuit voltage of the inverter.
- the type of modulation can be set even more precisely as a function of a measured intermediate circuit voltage.
- the working ranges are determined in such a way that a peak-valley value of an intermediate circuit voltage of the inverter does not exceed a predetermined value.
- working ranges in continuous load operation are determined in such a way that the peak-valley value of the intermediate circuit voltage does not exceed a predetermined second value that is smaller than the first value.
- the first value is at least 1.5 times, preferably at least 1.8 times, and / or at most 3 times, in particular at most 2.5 times, the second value.
- the first value and / or the second value can be a function of an operating parameter, for example the torque or the machine current.
- a further value of the peak-valley value of the intermediate circuit voltage that is not to be exceeded is specified for further work areas.
- control device is set up to provide the switching signals with the same carrier frequency when both types of modulation are used.
- the control device is set up to provide the switching signals with a different, in particular lower, carrier frequency when using the first type of modulation than when using the second type of modulation.
- a higher carrier frequency for the second type of modulation the maximum of the peak-valley value of the intermediate circuit voltage can be significantly reduced across all working points both in continuous load operation and in high-load operation, which also makes it possible to reduce the capacity of the intermediate circuit capacitor compared to a Operation in which the first type of modulation with the lower carrier frequency is used in all operating points.
- the maximum value of the switching losses is also reduced across all working points, especially if the discontinuous type of modulation is used in the total th high-load operation.
- the carrier frequency of the second type of modulation is preferably at least 10% greater than the carrier frequency when using the first type of modulation.
- the carrier frequency of the first type of modulation and / or of the second type of modulation can be specified as a function of the working point.
- control device In order to enable a particularly low-cost implementation of the control device according to the invention, it is preferably set up to determine the type of modulation to be used by means of a characteristic map that assigns a respective one of the types of modulation to the at least one operating parameter.
- the A characteristic map can be implemented, for example, by a look-up table.
- the control device has a memory unit in which the characteristics map is stored.
- control device can be set up to determine the type of modulation to be used on the basis of a function that evaluates the at least one operating parameter.
- the map or the calculation rule can be determined, for example, by measurement or simulation for a specific configuration of the inverter and the electrical machine.
- the control device can furthermore be set up to determine the type of modulation to be used when receiving updated work point information and / or after a predetermined or predeterminable time span and / or after the end of an electrical period of the electrical machine. In this way, the type of modulation can be adapted to the current operating point at appropriate times.
- control device is set up to extract the operating point information from torque information received at an input and / or rotational speed information received at an input and / or current information describing the amperage of the machine current and / or current information describing the intermediate circuit voltage To determine voltage information and / or to estimate the operating point information in the context of a control system for determining the switching signals.
- the torque can also be determined from the stream information.
- an inverter comprising an intermediate circuit capacitor, switching elements which are connected up to control an intermediate circuit voltage applied to the intermediate circuit capacitor as a function of the switching elements To convert switching signals into a single or multi-phase alternating voltage, and a control device according to the invention.
- the intermediate circuit capacitor can be formed by a single capacitor element or by several capacitor elements connected in parallel and / or in series.
- the inverter can also include an analog-digital converter, which is set up to convert analog measurement signals into the current information and / or the voltage information and / or the torque information and / or the speed information.
- an analog-digital converter which is set up to convert analog measurement signals into the current information and / or the voltage information and / or the torque information and / or the speed information.
- the object on which the invention is based is also achieved by an arrangement with an inverter according to the invention and an electrical machine which can be operated by means of the alternating voltage.
- the object on which the invention is based is also achieved by a method for operating an inverter for supplying an electrical machine, comprising the following steps carried out by a control device: Determining a type of modulation by means of which pulse-width-modulated switching signals for controlling switching elements of the inverter are generated as a function of an operating point information that describes an operating point defined by at least one operating parameter, a first type of modulation being used in at least one first operating area and a second type of modulation being used in a further operating area; and providing the switching signals.
- the object on which the invention is based is achieved by a computer program comprising commands which, when the program is executed by a computer, cause the computer to execute the steps of the method according to the invention carried out by the control device.
- FIG. 1 shows a block diagram of an exemplary embodiment of an arrangement according to the invention with an exemplary embodiment of an inverter according to the invention and a first embodiment of a control device according to the invention;
- Fig. 2 is a torque-speed diagram with Ar work areas during operation of the arrangement with the first exemplary embodiment from the control device;
- FIG. 3 shows a torque-speed diagram with insulated lines of peak-valley values of an intermediate circuit voltage during operation of the arrangement with the first exemplary embodiment of the control device;
- Fig. 4 shows a torque-speed diagram with drawn Isoli lines of total losses during operation of the arrangement with the first embodiment of the control device
- Fig. 5 is a torque-speed diagram with drawn Isoli lines of percentage changes in total losses when operating the arrangement with the first embodiment of the Control device compared to an arrangement according to the prior art;
- FIG. 6 and 7 each show a torque-speed diagram with working areas drawn in during the operation of an arrangement according to FIG. 1 with further exemplary embodiments of the control device;
- FIG. 8 shows a diagram of a possible percentage reduction of an inter mediate circuit capacitance over the carrier frequency of the second type of modulation with a constant carrier frequency of the first type of modulation
- FIGS. 10 and 11 each show a torque-speed diagram with working areas drawn in during the operation of an arrangement according to FIG. 1 with further exemplary embodiments of the control device.
- Fig. 1 is a block diagram of an embodiment of an arrangement 1 to summarize an embodiment of an inverter 2 and an electrical Ma machine 3, which is set up to drive a partially or fully electrically drivable vehicle.
- the arrangement 1 also includes a DC voltage source 4, which is designed in the present case as a high-voltage battery.
- the inverter 2 comprises a filter device 5, which in the present case is designed as an EMC filter, an intermediate circuit capacitor 6, a power unit 7, an exemplary embodiment of a control device 8, a first measuring device 9, a second measuring device 10 and an analog-to-digital converter device
- the power unit 7 comprises a plurality of switching elements 12, which are designed as semiconductor switching elements, for example as IGBT or power MOSFET.
- the switching elements 12 are connected in pairs to form half bridges.
- a control input 13 of a respective switching element 12, a driver 14 is switched upstream. For the sake of clarity, only one switching element 12 and one driver 14 are provided with reference symbols.
- the drivers 14 receive pulse-width-modulated switching signals 15 from the control device 8, which are provided in such a way that an output voltage for supplying the electrical machine 3 is provided at a respective tap of the half-bridges.
- the power unit 7 therefore converts, as a function of the switching signals 15, an intermediate circuit voltage stabilized by the intermediate circuit capacitor 6 into an alternating voltage that is present in three phases.
- the voltage present at the intermediate circuit capacitor 6 is therefore to be understood as the intermediate circuit voltage.
- the first measuring device 9 is set up to detect a machine current and to provide measurement signals to the analog-digital converter device 11, which converts the analog measurement signals from the first measuring device 9 into digital current information 16.
- the second measuring device 10 is set up accordingly to detect a speed of the electrical machine 3 and to provide measurement signals to the analog-digital converter device 11, which converts the analog measurement signals of the second measuring device 10 into digital speed information 17.
- the speed information 17 can already be provided digitally by the second measuring device 10.
- the control device 8 receives the current information 16 and the speed information 17 on the input side. From this, it determines a torque information that describes the torque of the electrical machine 3. Alternatively, the torque information can also be estimated by the control device 8 as part of a regulation for determining the switching signals 15.
- a third measuring device 18 is optionally provided in the inverter 2, which detects an intermediate circuit voltage present across the intermediate circuit capacitor 6.
- the analog measurement signals of the third measurement device 18 are converted into a voltage information 19 by the analog-to-digital converter device 11, which the control device 8 also holds on the input side.
- the control device 8 determines operating point information which describes an operating point defined by a tuple of operating parameters.
- the operating parameters are the torque of the electrical machine 3 and also a speed of the electrical machine.
- a current strength of the machine current of the electrical machine 3 determined on the basis of the current information 16 can be used as an operating parameter.
- the operating point information can also include the intermediate circuit voltage as an operating parameter.
- the control device 8 is set up to determine a type of modulation, by means of which the pulse-width-modulated switching signals 15 are generated, as a function of the operating point information.
- the control device 8 comprises a memory unit 20, in which a characteristic map implemented as a look-up table, which is assigned to pairs of rotational speed values and torque values, is stored with a type of modulation.
- the control device 8 selects a corresponding type of modulation based on the operating point information from the map.
- a uniform carrier frequency of, for example, 10 kHz is used for both types of modulation.
- Fig. 2 is a torque-speed diagram with drawn Häberei surfaces during the operation of the arrangement 1 shown in Fig. 1, wherein a torque is generally designated with M and a speed with f rot .
- the map has a first working range 21 which lies between a positive lower torque limit 22 and a likewise positive upper torque limit 23 and is limited by the upper torque limit 23.
- the first working range 21 is also between a lower operating parameter limit 24 and an upper operating parameter limit 25, which in the present case are speed limits.
- the first working range 21 extends from a basic speed mode 26 to a power limiting mode 27.
- another first working range 28 can also be seen, which extends from a full load line 29, at which there is a maximum torque in terms of amount, to a lower amount Torques extends.
- Further first working areas 30, 31 are defined for negative torques. The remaining working points lie in a second working area 32.
- the control device is set up to provide a continuous type of pulse width modulation in the first working areas 21, 28, 30, 31, here space vector modulation (SVM), and in the second working area 32 a discontinuous type of pulse width modulation, here Generalized Discontinous Pulse Width Modulation (GDPMW) to use to generate the switching signals 15.
- SVM space vector modulation
- GDPMW Generalized Discontinous Pulse Width Modulation
- the working ranges 21, 28, 30 to 32 are determined so that a peak-valley value of an intermediate circuit voltage of the inverter does not exceed a predetermined first value when the electrical machine 3 is in a high-load operation 33, 34, and one second value, which is, for example, smaller by a factor of 2 than the first value when the electrical machine 3 is in continuous load operation 35.
- the first value is 27.3 V and the second value is 13.65 V.
- a torque-speed diagram in FIG. 3 with isolines of peak-valley values of the intermediate circuit voltage during operation of the arrangement 1 is shown infer that by the working point-dependent Specification of the modulation types these values are not exceeded.
- 4 is a torque-speed diagram with isolines of total losses, defined as a sum of switching losses and conduction losses in the inverter 2, during operation of the arrangement 1.
- FIG. 5 shows a torque-speed diagram for this purpose Isolines of percentage changes in the total losses compared to an arrangement corresponding to arrangement 1 according to the prior art, in which only SVM is used. It can be seen from FIG. 5 that in the second working area 32 there is a considerable reduction in the total losses compared to an exclusive use of SVM.
- the following table 1 shows in a column “SVM 10 kHz” operating properties of this arrangement according to the state of the art as reference, in a column “GDPWM 10 kHz” for comparison corresponding operating properties with exclusive use of GDPWM and in a column “SVM 10 kHz and GDPWM 10 kHz "corresponding operating properties when operating the arrangement 1 according to the present embodiment.
- This is shown for three intermediate circuit voltages of 270 V, 350 V and 450 V at a constant carrier frequency of 10 kHz.
- a value of 650 pF is assumed as the intermediate circuit capacitance.
- UDC the peak-to-peak of
- the first working areas each show in a torque-speed diagram the limitations of the first working areas, which are represented by lines 38 to 42, in further embodiments for a carrier frequency of 10 kHz when using SVM and different carrier frequencies in the Use of GDPMW in comparison to the limitations of the first working areas, which are represented by lines 44, in the first embodiment, in which the carrier frequency is 10 kHz for GDPWM as well.
- the lines 38 refer to a carrier frequency of 6 kHz
- the lines 39 to a carrier frequency of 8 kHz
- the lines 40 to a carrier frequency of 11 kHz
- the lines 41 to a carrier frequency of 12 kHz
- the line 42 to a carrier frequency of 13 kHz.
- the first working areas visibly decrease with increasing carrier frequency when using GDPWM.
- the choice of the carrier frequency when using GDPWM influences the global maximum of the peak-valley value of the intermediate circuit voltage and thus the possible reduction in the intermediate circuit capacitance, the maximum total losses and the partial load efficiency.
- the carrier frequency increases when GDPWM is used, the global maximum of the peak-valley value of the intermediate circuit voltage falls, which enables the intermediate circuit capacitance to be reduced.
- Fig. 8 shows a diagram of the possible percentage reduction of the intermediate circuit capacitance over the carrier frequency of the second type of modulation with a constant carrier frequency of the first type of modulation using a line 49.
- a line 50 is also shown, the maximum possible reduction in DC link capacity with exclusive use of GDPWM in comparison to the exclusive use of SVM.
- FIG. 9 shows a diagram of the maximum percentage reduction in the total losses over the carrier frequency of the second type of modulation at a constant carrier frequency of the first type of modulation.
- a line 51 describes the maximum relative reduction in total losses with an intermediate circuit voltage of 270 V
- a line 52 the maximum relative reduction in total losses with an intermediate circuit voltage of 350 V
- line 53 the maximum relative reduction in total losses with an intermediate circuit voltage voltage of 450 V.
- FIGS. 10 and 11 are each a torque-speed diagram with working areas drawn in in an arrangement 1 according to FIG. 1 with further exemplary embodiments of the control device 8.
- FIGS. 10 and 11 show qualitatively the arrangement of first working areas 21, 30 and second Work areas 32, 32a,
- the first working range 21 for positive torques is limited only by the lower torque limit 22 and the upper torque limit 23, regardless of the speed.
- the further first working range 30 for negative torques is also limited independently of the speed by a lower torque limit 22a and an upper torque limit 23a.
- the first working range 21 for positive torques by the lower torque limit 22 and the upper torque limit 23 and by the lower speed limit 24 and the upper speed limit 25 is limited.
- the further first working range 30 for negative torques is through the lower torque limit 22a and the upper one Torque limit 23a and limited by the lower speed limit 24a and the upper speed limit 25a.
- control device 8 can, as an alternative to using a characteristic map, be set up to determine the type of modulation to be used on the basis of a function evaluating the at least one operating parameter.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019132509.9A DE102019132509A1 (de) | 2019-11-29 | 2019-11-29 | Steuereinrichtung, Wechselrichter, Anordnung mit einem Wechselrichter und einer elektrischen Maschine, Verfahren zum Betreiben eines Wechselrichters sowie Computerprogramm |
| PCT/EP2020/083122 WO2021105079A1 (de) | 2019-11-29 | 2020-11-24 | Steuereinrichtung, wechselrichter, anordnung mit einem wechselrichter und einer elektrischen maschine, verfahren zum betreiben eines wechselrichters sowie computerprogramm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4066372A1 true EP4066372A1 (de) | 2022-10-05 |
Family
ID=73598066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20812251.5A Pending EP4066372A1 (de) | 2019-11-29 | 2020-11-24 | Steuereinrichtung, wechselrichter, anordnung mit einem wechselrichter und einer elektrischen maschine, verfahren zum betreiben eines wechselrichters sowie computerprogramm |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12074550B2 (de) |
| EP (1) | EP4066372A1 (de) |
| CN (1) | CN114846741B (de) |
| DE (1) | DE102019132509A1 (de) |
| WO (1) | WO2021105079A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2954333B2 (ja) * | 1990-11-28 | 1999-09-27 | 株式会社日立製作所 | 交流電動機可変速システム |
| US7307401B2 (en) * | 2006-03-16 | 2007-12-11 | Gm Global Technology Operations, Inc. | Method and apparatus for PWM control of voltage source inverter |
| US7679310B2 (en) * | 2007-10-24 | 2010-03-16 | Gm Global Technology Operations, Inc. | Method and system for controlling pulse width modulation in a power inverter in electric drives |
| FR3004299B1 (fr) * | 2013-04-05 | 2016-10-28 | Valeo Equip Electr Moteur | Procede et dispositif de commande d'un onduleur polyphase |
| DE102013109224A1 (de) * | 2013-08-26 | 2015-02-26 | Linde Material Handling Gmbh | Steuerungsverfahren für einen elektrischen Antrieb einer mobilen Arbeitsmaschine |
| DE102014225099A1 (de) * | 2014-12-08 | 2016-06-09 | Zf Friedrichshafen Ag | Schaltung und Verfahren zum Ansteuern eines Wechselrichters bei einer Drehstrommaschine |
| JP6414513B2 (ja) * | 2015-06-05 | 2018-10-31 | アイシン・エィ・ダブリュ株式会社 | 回転電機制御装置 |
| US12459376B2 (en) * | 2023-10-04 | 2025-11-04 | Borgwarner Inc. | Optimization of switching frequency and pulse width modulation technique for traction power inverters |
-
2019
- 2019-11-29 DE DE102019132509.9A patent/DE102019132509A1/de active Pending
-
2020
- 2020-11-24 US US17/780,836 patent/US12074550B2/en active Active
- 2020-11-24 WO PCT/EP2020/083122 patent/WO2021105079A1/de not_active Ceased
- 2020-11-24 EP EP20812251.5A patent/EP4066372A1/de active Pending
- 2020-11-24 CN CN202080080710.3A patent/CN114846741B/zh active Active
Non-Patent Citations (1)
| Title |
|---|
| LAUMEN MICHAEL ET AL: "Optimized space vector modulation for DC-link balancing in three-level neutral-point-clamped inverters for electric drives", 2017 IEEE 12TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND DRIVE SYSTEMS (PEDS), IEEE, 12 December 2017 (2017-12-12), XP033320336, [retrieved on 20180209], DOI: 10.1109/PEDS.2017.8289216 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114846741B (zh) | 2026-03-31 |
| US20230019218A1 (en) | 2023-01-19 |
| WO2021105079A1 (de) | 2021-06-03 |
| DE102019132509A1 (de) | 2021-06-02 |
| US12074550B2 (en) | 2024-08-27 |
| CN114846741A (zh) | 2022-08-02 |
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