EP3935724A1 - Antriebssystem und verfahren zum betreiben eines antriebssystems - Google Patents
Antriebssystem und verfahren zum betreiben eines antriebssystemsInfo
- Publication number
- EP3935724A1 EP3935724A1 EP20706380.1A EP20706380A EP3935724A1 EP 3935724 A1 EP3935724 A1 EP 3935724A1 EP 20706380 A EP20706380 A EP 20706380A EP 3935724 A1 EP3935724 A1 EP 3935724A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inverter
- voltage
- drive system
- side connection
- switching unit
- 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
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims abstract description 13
- 239000004065 semiconductor Substances 0.000 claims description 9
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 238000013016 damping Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- 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
- H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC
- H02M5/42—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters
- H02M5/44—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC
- H02M5/453—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/4585—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
-
- 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
- H02M1/36—Means for starting or stopping 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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC
- H02M5/42—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters
- H02M5/44—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC
- H02M5/453—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- 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
- H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
- H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
- H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/125—Avoiding or suppressing excessive transient voltages or currents
-
- 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
- H02M7/66—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal
- H02M7/68—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal by static converters
- H02M7/72—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/79—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with 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
- H02M7/797—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with 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
Definitions
- the invention relates to a drive system and a method for operating a
- Inverter is connected.
- the AC voltage side connection of the rectifier is fed from an AC voltage supply network and from which
- AC voltage side connection of the inverter is fed by an electric motor.
- the invention is therefore based on the object of improving the energy efficiency of a drive system.
- the object is achieved in the drive system according to the features specified in claim 1 and in the method according to the features specified in claim 9.
- the drive system has a converter and a second inverter as well as at least one first switching unit, an electric motor being connected to the AC voltage-side connection of the second inverter, the converter having a first inverter and a rectifier, in particular a controllable rectifier , wherein the DC voltage side connection of the rectifier with the
- DC voltage side connection of the first inverter is connected, in particular connected in parallel, wherein a capacitance is arranged in parallel to the DC voltage side connection of the first inverter, in particular is connected, wherein the DC voltage side connection of the second inverter with the
- DC voltage side connection of the first inverter is connected, in particular connected in parallel, the AC voltage side connection of the first inverter depending on the switching state of the first switching unit, in particular via a line filter, with a
- AC voltage supply network ie three-phase power supply network, can be connected.
- the first switching unit is controlled by the signal electronics of the first inverter.
- the advantage here is that pre-charging is made possible via the free-wheeling diodes of the semiconductor switches of the inverter. This is because the rectifier, in particular the controlled rectifier, of the converter is not used at its connection on the AC voltage side and is therefore not able to supply electrical power to the intermediate circuit.
- Rectifier is not used, in particular is therefore open.
- the advantage here is that the
- Free-wheeling diodes of the semiconductor switches of the inverter act as rectifiers. This means that the intermediate circuit capacitor is precharged from the connection on the AC voltage side of the inverter.
- the capacitance is non-polar, in particular one
- Film capacitor or a film capacitor arrangement is.
- the advantage here is that the capacity is less than 10pF / kW, in particular between 2pF / kW and 8pF / kW, and the intermediate circuit can thus be implemented as a slim intermediate circuit.
- the converter has signal electronics that generate the control signals of the semiconductor switches of the first inverter,
- the switching units can be controlled by the signal electronics.
- the first switching unit can be closed in order to precharge the intermediate circuit capacitance, the second switching unit being closed after another threshold value of the intermediate circuit voltage has been exceeded.
- the AC voltage-side connection of the first inverter can be connected to an AC voltage supply network depending on the switching state of a second switching unit, in particular via a line filter, via ohmic resistances or impedances arranged in the phase lines, in particular where the value of the ohm in each of the phase lines 's resistance or impedance is the same.
- the signal electronics control the second switching unit.
- the advantage here is that the AC voltage supply network is only switched on after the intermediate circuit capacitor has been charged.
- a is on the housing of the converter
- the rectifier, the capacitance and the first inverter are arranged in a common housing, wherein the second inverter and / or the first and / or second switching unit is arranged in a separate housing.
- Important features of the method for operating a drive system are that when the drive system is switched on, the first switching unit is initially closed, in particular in such a way that the intermediate circuit capacitance C is precharged via resistors R, and then, in particular when the intermediate circuit voltage exceeds a first threshold value second switching unit is closed, in particular for supplying the intermediate circuit in the case of a motor-driven electric motor and for feeding back into the
- Electric motor but is connected to the AC voltage supply network.
- the same converter can also be used to feed an electric motor, in which case the AC voltage supply network is connected to the AC voltage-side connection of the converter of the converter. Only the software executed by the signal electronics has to be adapted accordingly.
- the first inverter always impresses a current in those phase lines during regenerative operation whose voltage is lower than the intermediate circuit voltage.
- FIG. 1 A drive system according to the invention is shown in FIG. 1
- the drive system has a converter, the housing 12 of which has a rectifier, in particular a controlled rectifier, and a first
- the DC voltage side connection of the rectifier 1 is with the
- a brake chopper 3 is supplied from the DC voltage side connection of the first inverter 5, which connects a braking resistor RB to the DC voltage side connection when the intermediate circuit voltage exceeds a threshold value.
- the braking chopper 3 with braking resistor RB is electrically connected in parallel to the intermediate circuit capacitor C.
- the braking resistor RB is outside the housing 12 of the
- Inverter arranged.
- the connections of the intermediate circuit i.e. the upper and the lower potential of the intermediate circuit voltage, are led out of the housing 12 as DC voltage connection 11 so that the DC voltage side connection of a second inverter 7, which feeds an electric motor M, can be supplied.
- the first inverter 5 has a parallel connection of half bridges, the parallel connection being supplied from the intermediate circuit voltage, in particular being connected directly to the DC voltage-side connection of the rectifier 1.
- Each half-bridge is designed as a series circuit, each of the series circuits having two controllable semiconductor switches, so that the respective connection node is led out to the AC voltage-side connection of the first inverter 5 and provides a respective phase.
- a conventional converter can therefore be used as the converter if its
- a freewheeling diode is connected in parallel to each controllable semiconductor switch of each half-bridge of the first inverter 5, so that when a three-phase voltage is applied to the
- Rectifier functions and leads out the rectified three-phase voltage at the DC voltage-side connection of the inverter 5.
- the drive system is connected to the public AC voltage supply network via a line reactor 10.
- a switching unit 9, in particular a contactor, is arranged between the line reactor 10 and the connection on the AC voltage side of the inverter 5. When the first switching unit 9 is closed, the line reactor 10 is thus directly connected to the AC voltage-side connection of the
- the line reactor 10 is also connected to the AC voltage-side connection of the inverter 5 via a second switching unit 8, in particular a contactor, a resistor being arranged in each of the phase lines.
- the second switching unit 8 is closed, the line choke 10 is thus connected via these resistors to the connection on the AC voltage side of the inverter 5.
- This connection can be separated by opening the second switching unit 8.
- the intermediate circuit capacitor C is first precharged by closing the second switching unit 8, so that the precharging is then effected via the resistors R and the rectifier formed from free-wheeling diodes.
- the first switching unit 9 is open so that the resistors are not bridged.
- the switching unit 8 is opened and the first
- Switching unit 9 closed, so that in motor operation of the electric motor M electrical power from the public supply network via the line choke 10 and the as
- Rectifier functioning freewheeling diodes of the inverter 5 is conducted into the intermediate circuit of the converter and from there via the DC voltage connection 11 of the converter to the second inverter 7, which then feeds the electric motor.
- Inverter 7 electrical power passed into the intermediate circuit and by means of the
- Inverter 5 then passed through the line reactor 10 into the public supply network.
- the controllable half-liter switches of the first inverter are operated by means of block-shaped feedback, i.e. the corresponding semiconductor switch is opened when the intermediate circuit voltage is greater than the voltage detected on the respective phase line.
- the line choke 10 suppresses any high-frequency interfering current components.
- the three-phase connection 2 is therefore not used.
- a means 4 for detecting the intermediate circuit voltage is connected to the signal electronics 6 of the first inverter 5.
- the signal electronics 6 controls the second switching unit 8 and the first switching unit 9.
- the second switching unit 8 When switching on, only the second switching unit 8 is initially closed, so that the capacitance C is precharged.
- the first switching unit 9 is then closed, so that the inverter 5, in particular the freewheeling diodes of the half-bridges of the inverter 5, functions as a rectifier in motor operation and the inverter 5 in generator operation
- Electric motor M of the inverter acts as a block-shaped feedback.
- the semiconductor switches of the inverter 5 are first opened and then both switching units (8, 9) may be opened simultaneously.
- the two switching units (8, 9) are arranged outside the housing 12 of the converter.
- the converter does not have to be converted or changed for the operation according to the invention, with the exception of its software. Because the first inverter 5 is used as a block-shaped feedback and not to generate a rotating field with a predetermined speed.
- a respective impedance is used instead of the resistors R, in particular a respective inductance. This enables the intermediate circuit voltage to build up even more gently.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Rectifiers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019001582 | 2019-03-08 | ||
| PCT/EP2020/025073 WO2020182341A1 (de) | 2019-03-08 | 2020-02-17 | Antriebssystem und verfahren zum betreiben eines antriebssystems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3935724A1 true EP3935724A1 (de) | 2022-01-12 |
Family
ID=69645909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20706380.1A Pending EP3935724A1 (de) | 2019-03-08 | 2020-02-17 | Antriebssystem und verfahren zum betreiben eines antriebssystems |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3935724A1 (de) |
| DE (1) | DE102020001006A1 (de) |
| WO (1) | WO2020182341A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4021431B2 (ja) * | 2004-08-10 | 2007-12-12 | ファナック株式会社 | コンバータ装置、インバータ装置及びdcリンク電圧の制御方法 |
| JP2006340466A (ja) * | 2005-06-01 | 2006-12-14 | Fuji Electric Fa Components & Systems Co Ltd | Pwmコンバータ制御装置 |
| US9654021B2 (en) * | 2013-10-09 | 2017-05-16 | Rockwell Automation Technologies, Inc. | Multifunction power converter with option for integrated magnetics |
-
2020
- 2020-02-17 DE DE102020001006.7A patent/DE102020001006A1/de active Pending
- 2020-02-17 WO PCT/EP2020/025073 patent/WO2020182341A1/de not_active Ceased
- 2020-02-17 EP EP20706380.1A patent/EP3935724A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102020001006A1 (de) | 2020-09-10 |
| WO2020182341A1 (de) | 2020-09-17 |
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