EP1922901A1 - Circuit, shrink fixing and regulation method - Google Patents
Circuit, shrink fixing and regulation methodInfo
- Publication number
- EP1922901A1 EP1922901A1 EP06777095A EP06777095A EP1922901A1 EP 1922901 A1 EP1922901 A1 EP 1922901A1 EP 06777095 A EP06777095 A EP 06777095A EP 06777095 A EP06777095 A EP 06777095A EP 1922901 A1 EP1922901 A1 EP 1922901A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- induction coil
- circuit
- voltage
- input
- inverter
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000033228 biological regulation Effects 0.000 title claims abstract description 10
- 230000006698 induction Effects 0.000 claims abstract description 58
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 230000001276 controlling effect Effects 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims description 14
- 239000003990 capacitor Substances 0.000 claims 1
- 238000013021 overheating Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/14—Tools, e.g. nozzles, rollers, calenders
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
Definitions
- This application relates to a circuit for controlling the supply of electrical power to an induction coil, in particular to an induction coil for heating a tool shrink fit, comprising a rectifier having an input for feeding an input power and a rectifier output, an inverter for outputting a AC voltage having an input and an inverter output for connecting the induction coil, a link for connecting the rectifier to the inverter, and a control unit for controlling the power supply to the induction coil, power supply unit for supplying electric power to an induction coil.
- the application relates to a shrink fit for tools comprising an induction coil for heating the shrink fit by generating eddy currents and / or by generating Ummagnethnes 1968, and a method for controlling the power supply to an induction coil, in particular to an induction coil for heating a shrink fitting for tools comprising a control step.
- the tool In lathes, milling machines, drills and the like, the tool is received in a Malawifutteral. For precise and defined machining of a workpiece, it is necessary to position the tool precisely in the case.
- the use of shrink chucks or shrink fittings has proven itself for the positioning and fixing of tools in the sheath.
- the sheath is first heated. Due to the thermal expansion of the inclusion of the shrink attachment, the tool can be inserted into the receiving opening and fixed there by subsequent cooling in the case. The positioning can be done in this way simple, accurate and reliable.
- An induction coil can be used to heat the shrink sleeve. This coil is supplied with an AC voltage. However, care must be taken that the maximum load limit of the induction coil and the power electronics is not exceeded. This can be the power supplied to most power supply units be preset. It goes without saying, however, that such adjustment possibilities are relatively inaccurate and, in particular, a relatively large distance from the maximum elastic limit of the induction coil and the power electronics must be maintained.
- An improved power supply unit as shown in FIG. 1, comprises a rectifier 3 with inputs 3a, 3b and 3c. At the output of the rectifier, a DC voltage intermediate circuit 4 is connected. An inverter 5 converts the DC voltage into AC voltage to operate an induction coil 2.
- input voltage is usually a rotational voltage with a predetermined voltage, for example from 360V to 500 V, used. Since the voltages of the power supplied vary from country to country, the power supply unit must be specially equipped depending on the location of use, for example with transformers or with differently designed components.
- measuring devices for measuring the voltage Vl and the current Al are arranged on the DC side. These measurements are used as inputs to a control unit (not shown) to control the power supplied to the coil 2.
- the determination of the apparent power from the values measured in the intermediate circuit is relatively simple in terms of measurement since variations of the voltage and of the current over time are not very pronounced. In particular, no significant voltage and current peaks occur. For example, no currents of more than 25 amperes occur in the DC link, so that more expensive and expensive converter modules can be dispensed with. In this way, cost-effective components, for example converter modules, which are used to measure the current intensity can be used for the measurement and determination of the actual values.
- a device for inductive heating of a chuck which provides as input for the control unit, a measuring device which may be connected at different points of the supply circuit and preferably measures the current in the primary circuit of a transformer at the AC output.
- the transformer On the secondary side, the transformer is connected to the inductor coil or the corresponding resonant circuit.
- the device provides a control device for controlling the supply circuit and a filter. Due to the shading at the AC output, the measured apparent power only corresponds approximately to the apparent power that is actually supplied to the induction coil in this device as well.
- DE 101 29 645 B4 discloses a method for welding plastic parts, in which a contoured wire is inductively heated by a coil at the welding point. Also, this device provides a current measurement for power limitation, in which case, however, a tool and not a tool holder is heated.
- the object of the present invention is to improve the accuracy of the regulation of the power supply to an induction coil, in particular for heating a shrink fitting for tools, and to eliminate the disadvantages associated therewith.
- the inventive circuit for controlling the supply of electrical power to an induction coil in particular to an induction coil for heating a shrink fitting for tools, comprising a rectifier having an input for feeding an input power and a rectifier output an inverter for outputting an AC voltage having an input and an inverter output to connect the induction coil, a DC link to connect the rectifier to the inverter, and a control unit to control the power supply to the induction coil.
- the circuit has a measuring device for measuring a current as an input variable for the control unit, wherein the measuring device is connected to the output side of the inverter.
- the current measured at the inverter output is thus measured on the coil side with respect to the inverter.
- the current measured in the power supply from the inverter to the coil can be used to directly deduce the power supplied to the coil at the time of measurement. In other words, the current current flowing through the coil is directly measured.
- the input variable for the control thus corresponds to the actual controlled variable.
- a particular advantage of this arrangement is that no “smoothed" values are measured as in the prior art in connection with the shrinking technique, but the current, actual size to be controlled. As a result, the measured power and the control are more accurate in the present invention.
- the performance of the modules used in the circuit can be fully exploited without the risk of overloading the coil and power electronics.
- the limits of the load of the components can be gone.
- the components can be optimally dimensioned and utilized within their load capacity.
- larger components had to be used to protect against overloading, as already described above.
- the overload protection is optimized by the considerably increased accuracy of the measurement of the actual values. Since the load currently applied to the coil is exactly can be true, the load on the coil and the power electronics and thus the effectiveness of the heating can be increased. Due to this increase in the coil load, a significantly higher load, for example at least 30% to 50%, can be applied to the coil, in comparison to the prior art, without any delay in the control or by incorrect determination of the actual power a critical range is reached.
- the intermediate circuit comprises a capacitance which smoothes the voltage in the intermediate circuit and reduces current peaks.
- the inverter is designed in particular for generating an alternating voltage with a predetermined frequency, in particular with a frequency of 5 kHz to 2OkHz, in particular 1OkHz, at the inverter output.
- the frequency is fixed and can be optimized depending on the application and the requirements.
- the control unit regulates the power supply to the induction coil connected to the inverter output as a function of the input variable, in particular by varying a pulse width of the AC voltage generated by the inverter.
- Shorter pulse widths mean lower power at constant frequency and voltage.
- the power supply is independent of the input voltage to the rectifier inputs, since only the pulse widths are regulated and compensated for by these voltage fluctuations.
- not only voltage fluctuations in the network are compensated. Rather, the design ensures that different input voltages, according to international standards (for example, 400 V for Europe, 480 V for the United States) can be used. It is not necessary, as in the prior art to use more transformers to achieve an adaptation to the circumstances. Fluctuations or differences in the input and / or intermediate voltage are corrected automatically. This leads to greater flexibility and a universality of the circuit, without the cost of the overall circuit increases significantly.
- the circuit can be operated, in particular, with a voltage which is variable in a predetermined voltage range, in particular between 360 V and 500 V.
- the preferred voltage range includes the default values currently in force in major industrialized countries.
- the circuit with one-phase or multi-phase AC voltage is operable.
- the object is also achieved by providing a shrink-fit fastener for tools, comprising an induction coil for heating the shrinkage attachment by generating eddy currents and / or by generating magnetizing heat, and one of the circuits described above.
- the circuit according to the invention has proven particularly suitable for shrink fasteners for tools.
- a particularly accurate supply of heat to the shrink attachment is desirable to allow a quick and accurate fitting of the tools in the shrink fit.
- destruction of the induction coil and the power electronics despite a reaching to the limit load of the components supplied power by exceeding the Maximalbelast- limitability and overheating of the tool holder (by the accuracy of the adjustability of the heating time) can be prevented.
- the object is also achieved by a method for regulating the power supply to an induction coil, in particular to an induction coil for heating a shrink fitting for tools, comprising a control step in which the current supplied to the induction coil is used as input for controlling the power supply to the induction coil ,
- control step in which the power is determined by measuring the output current value, a timely and accurate control is achieved.
- the load on the coil can be significantly increased by the increased accuracy without the risk of exceeding a critical load limit.
- the power supplied to the induction coil can be determined using the impedance of the coil and the current measured by a measuring device. On the other hand, an additional measurement of the voltage can be dispensed with.
- the method preferably provides that the size of the shrink-fit fastening for tools, in particular the size of a shrink-fit chuck, is automatically determined by means of the measured current.
- the parameters for various shrink fasteners for tools no longer have to be set manually, but can be stored, for example in the machine control.
- the input voltage is measured to automatically determine the size of the shrink fit for tools.
- the input voltage is preferably determined by a voltage measurement in front of the rectifier or in the intermediate circuit or in the coil circuit.
- the measurement of the size of the shrink fit for tools is also possible with a change in the input voltage caused by the shrinking process. Overheating of the shrink fitting for tools due to a wrong selection of its size can therefore be avoided.
- the induction coil is preferably an alternating voltage with a predetermined frequency, in particular with a frequency of about 5 kHz to 20 kHz supplied.
- the regulation of the power supply to the induction coil is carried out in a particular embodiment by varying a pulse width of the AC voltage.
- the power supplied to the coil can thus be kept reliably constant even with a change in the input variables, the physical properties of the components or external influences.
- the method can be used for various industry standards corresponding voltage values, for example for 360 V, 400 V or 500 V.
- Fig. 1 shows a specific embodiment of the circuit according to the invention.
- Fig. 2 shows a corresponding circuit according to the prior art
- FIG. 1 shows a circuit 1 according to the invention for controlling the electrical power supply to an induction coil 2.
- the circuit is implemented on a circuit board and thus represents a control board for the power supply to the coil 2.
- the induction coil 2 is used in particular for heating a shrink fit for tools.
- the induction coil 2 generates during the heating process, an alternating electromagnetic field to which the shrink fitting is coupled.
- Heat is generated by the eddy currents generated in the shrink-fit fastening and / or by magnetic reversal in a shrink-fit fastening made of ferromagnetic material, so that a tool holder expands so that the tool can be inserted.
- the induction coil 2 During the heating process, it is desirable for the induction coil 2 to be as constant as possible and, under consideration of the maximum load capacity of the components, to be supplied with maximum power. In any case, it must first be avoided that the maximum load limit of the induction coil 2 and the power electronics is exceeded, on the other hand, the coil 2 as high power to be supplied in order to carry out the heating effectively and to avoid overheating of the tool holder.
- the circuit comprises a rectifier 3 with input contacts 3a, 3b and 3c, via which an input voltage, for example a three-phase current, is fed.
- An intermediate circuit 4 connected to the output of the rectifier 3 essentially comprises a capacitance 7 which is charged or discharged by the coil 2, depending on the direction of flow of the current.
- An inverter 5 whose input is connected to the intermediate circuit 4, generates a modulated, substantially rectangular AC voltage with a frequency of about 5 kHz to 20 kHz.
- the frequency is adjustable and can be specified by the user.
- the direct current fed by the rectifier 3 into the intermediate circuit 4 is fed via the output of the intermediate circuit 4 into the input of the inverter 5.
- the AC voltage generated by the inverter 5 is applied to the output terminals 5a and 5b of the inverter 5.
- the coil 2 is connected to these terminals 5a and 5b.
- the coil 2 is connected. Further, in this area, an ammeter 6 is arranged, which measures the current flowing through the coil current.
- any suitable current measuring device 6 can be used. In the current measurement according to the present invention, however, it should be noted that, in contrast to the current / voltage measurement in the intermediate circuit 4, cf. Fig. 2 - much higher currents occur. In the tip, for example, up to 400 amps compared to 25 amps in the intermediate circuit 4 incurred, so that in the inventive solution in the measuring range appropriately sized components, such as converter modules, must be used.
- the measured or determined from the measured values actual values of the current or the power are received by a control unit (not shown) as WhatsgröOe.
- the control can be based, for example, on the basis of an actual setpoint comparison of a desired power set for the coil 2 and a voltage derived from the measured current Actual performance will be performed. After the actual target comparison with a predetermined size, the power supply from the converter 5 to the coil 2 is readjusted if necessary.
- the control unit may be connected to the circuit 1 or integrated into the circuit 1.
- the regulation becomes more accurate and more effective, since in the measurement of the input variables in the intermediate circuit 4, the currents occurring in the coil 2 as a consequence of the impedance of the coil 2 are only approximated.
- the control unit regulates the supplied power in the exemplary embodiment on the basis of a variation of the pulse width of the output signal of the inverter 5.
- a larger pulse width at the same voltage means a higher power input.
- the control unit always regulates so that voltage fluctuations that reach the converter input are compensated.
- the output power at the converter is also independent of the magnitude of the input voltage at the rectifier 3 within a certain voltage range, which in the best case includes all standard international voltages. In this way, the circuit can be used without modifications within international standards.
- the assembly can be operated with components whose performance can be almost fully utilized.
- the risk of overloading the coil 2 is reduced by the timely and accurate control.
- no significant deviations between real occurring power peaks and, for example, measured in the intermediate circuit 4 performances, can be expected. Due to this increase in coil loading can, in comparison to State of the art, a significantly higher load applied to the coil and overheating of horraurhahme be avoided.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005042615A DE102005042615A1 (en) | 2005-09-07 | 2005-09-07 | Circuit, shrink fitting and method of regulation |
PCT/EP2006/008413 WO2007028523A1 (en) | 2005-09-07 | 2006-08-28 | Circuit, shrink fixing and regulation method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1922901A1 true EP1922901A1 (en) | 2008-05-21 |
EP1922901B1 EP1922901B1 (en) | 2013-04-24 |
Family
ID=37242588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06777095.8A Active EP1922901B1 (en) | 2005-09-07 | 2006-08-28 | Circuit, shrink fixing and regulation method |
Country Status (8)
Country | Link |
---|---|
US (1) | US8102682B2 (en) |
EP (1) | EP1922901B1 (en) |
JP (1) | JP5232648B2 (en) |
CN (2) | CN111818685B (en) |
DE (1) | DE102005042615A1 (en) |
ES (1) | ES2421588T3 (en) |
RU (1) | RU2406275C2 (en) |
WO (1) | WO2007028523A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013110135A1 (en) * | 2013-09-13 | 2015-03-19 | Maschinenfabrik Alfing Kessler Gmbh | A method of determining a thermal real power and inductor heater |
DE102015016830A1 (en) | 2015-12-28 | 2017-06-29 | Haimer Gmbh | Shrinking device for preferably mobile use |
DE102015016831A1 (en) * | 2015-12-28 | 2017-06-29 | Haimer Gmbh | Shrinking device with heating control |
CN107919739B (en) * | 2017-11-15 | 2020-02-07 | 太原理工大学 | Transmission power frequency selection method of wireless electric energy transmission system |
AT522345B1 (en) | 2019-03-29 | 2020-11-15 | Primetals Technologies Austria GmbH | Heating device for inductive heating of a flat steel strip in a hot rolling mill |
IT201900019756A1 (en) * | 2019-10-24 | 2021-04-24 | Nuova Simat S R L | CONTROL METHOD FOR INDUCTION HEATING MACHINE AND RELATED MACHINE |
DE102022103166A1 (en) | 2022-02-10 | 2023-08-10 | E. Zoller GmbH & Co. KG Einstell- und Messgeräte | Induction heating apparatus, shrink fit apparatus and method |
DE102022122629A1 (en) | 2022-09-06 | 2024-03-07 | Franz Haimer Maschinenbau Kg | Device for heat treatment |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2567693B1 (en) * | 1984-07-13 | 1986-11-14 | Saphymo Stel Applic Phys Mod E | POWER STATIC FREQUENCY CONVERTER |
US4638138A (en) * | 1984-07-23 | 1987-01-20 | Westinghouse Electric Corp. | High frequency inverter circuit for melting and induction heating |
US4876637A (en) * | 1988-03-22 | 1989-10-24 | Kabushiki Kaisha Toshiba | Power converter and method of controlling the same |
JP2684798B2 (en) * | 1989-12-20 | 1997-12-03 | 富士電機株式会社 | Induction heating inverter control method |
US5053939A (en) * | 1990-08-27 | 1991-10-01 | Sundstrand Corporation | Control of PWM inverters by pattern development from stored constants relating D.C. link harmonics to output distortion |
JP2791273B2 (en) * | 1993-09-07 | 1998-08-27 | 株式会社東芝 | Power converter |
US5483140A (en) * | 1993-10-01 | 1996-01-09 | Wisconsin Alumni Research Foundation | Thyristor based DC link current source power conversion system for motor driven operation |
DE19527827C2 (en) | 1995-07-29 | 1998-02-12 | Kuka Schweissanlagen & Roboter | Method and device for generating electrical heat |
US6031738A (en) * | 1998-06-16 | 2000-02-29 | Wisconsin Alumni Research Foundation | DC bus voltage balancing and control in multilevel inverters |
DE20008937U1 (en) | 2000-05-19 | 2000-08-17 | IWT Induktive Wärmetechnik GmbH, 58454 Witten | Device for the inductive heating of a chuck |
DE20008927U1 (en) * | 2000-05-19 | 2001-09-27 | Schwarzbich, Jörg, 33615 Bielefeld | Telescopic mechanism |
US20020024828A1 (en) * | 2000-08-31 | 2002-02-28 | Hidetake Hayashi | Inverter suitable for use with portable AC power supply unit |
JP3652239B2 (en) * | 2000-12-04 | 2005-05-25 | 第一高周波工業株式会社 | Induction heating power supply |
DE10129645B4 (en) * | 2001-06-20 | 2004-01-29 | KSI Gesellschaft für Kunststoff-Schweißtechnik und Industrieautomation mbH. | Process for welding plastic parts |
DE10215454C1 (en) | 2002-04-09 | 2003-10-02 | Kuka Schweissanlagen Gmbh | Process for regulating the current source of electrical resistance welding device, comprises the energy or electrical amount introduced during several, preferably all impulses and controlling the switching duration of the impulses |
EP2405710B1 (en) * | 2002-06-26 | 2015-05-06 | Mitsui Engineering and Shipbuilding Co, Ltd. | Induction heating method and unit |
US6768284B2 (en) * | 2002-09-30 | 2004-07-27 | Eaton Corporation | Method and compensation modulator for dynamically controlling induction machine regenerating energy flow and direct current bus voltage for an adjustable frequency drive system |
CN2580674Y (en) * | 2002-11-01 | 2003-10-15 | 李继林 | Electronic frequency conversion power source for three-phase input electric chain saw |
DE112004002551D2 (en) | 2003-12-23 | 2006-10-12 | Ema Indutec Gmbh | Inverter with a device for generating switching signals and method therefor |
DE10361458A1 (en) | 2003-12-23 | 2005-09-22 | Ema Indutec Gmbh | Converter, in particular for producing active power for inductive heating, with device for producing switching signals determines switching time point of load circuit signal by deriving from period to next anticipated null crossing |
DE102004010331B4 (en) * | 2004-02-25 | 2014-03-20 | Newfrey Llc | Method and device for generating an electrical heating current, in particular for inductive heating of a workpiece |
DE102004021217A1 (en) | 2004-04-29 | 2005-12-08 | Ema Indutec Gmbh | Method for controlling an inverter, in particular for generating active power for inductive heating |
US7372174B2 (en) * | 2005-11-11 | 2008-05-13 | Converteam Ltd | Power converters |
WO2008072348A1 (en) * | 2006-12-15 | 2008-06-19 | Mitsubishi Electric Corporation | Inverter |
JP2010104075A (en) * | 2008-10-21 | 2010-05-06 | Yutaka Denki Seisakusho:Kk | Power supply circuit |
EP2209197A1 (en) * | 2009-01-16 | 2010-07-21 | Whirpool Corporation | Method for controlling resonant power converters in induction heating systems, and induction heating system for carrying out such method |
-
2005
- 2005-09-07 DE DE102005042615A patent/DE102005042615A1/en not_active Ceased
-
2006
- 2006-08-28 ES ES06777095T patent/ES2421588T3/en active Active
- 2006-08-28 WO PCT/EP2006/008413 patent/WO2007028523A1/en active Application Filing
- 2006-08-28 RU RU2008113168/07A patent/RU2406275C2/en active
- 2006-08-28 CN CN202010669171.9A patent/CN111818685B/en active Active
- 2006-08-28 CN CNA2006800324589A patent/CN101273665A/en active Pending
- 2006-08-28 US US12/065,248 patent/US8102682B2/en active Active
- 2006-08-28 JP JP2008529505A patent/JP5232648B2/en active Active
- 2006-08-28 EP EP06777095.8A patent/EP1922901B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2007028523A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN111818685A (en) | 2020-10-23 |
RU2008113168A (en) | 2009-10-20 |
CN101273665A (en) | 2008-09-24 |
US20080219034A1 (en) | 2008-09-11 |
EP1922901B1 (en) | 2013-04-24 |
WO2007028523A1 (en) | 2007-03-15 |
ES2421588T3 (en) | 2013-09-04 |
JP2009507464A (en) | 2009-02-19 |
DE102005042615A1 (en) | 2007-03-08 |
US8102682B2 (en) | 2012-01-24 |
CN111818685B (en) | 2023-07-04 |
RU2406275C2 (en) | 2010-12-10 |
JP5232648B2 (en) | 2013-07-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1922901B1 (en) | Circuit, shrink fixing and regulation method | |
EP1386078B1 (en) | Wind energy plant and method for operating a wind energy plant | |
DE19524005C2 (en) | Bidirectional DC insulation converter | |
DE60207489T2 (en) | System interconnection for an electric power generator and control method therefor | |
DE202018006738U1 (en) | Power converter unit, plasma processing device and control device for controlling multiple plasma processes | |
DE2455581A1 (en) | SWITCH ARRANGEMENT FOR A DC ARC POWER SUPPLY, IN PARTICULAR FOR WELDING | |
EP0720266B1 (en) | Process and device for temperature monitoring of a universal motor | |
EP3281266A1 (en) | Method and device for supplying energy to a low-voltage load | |
EP3186865A1 (en) | Electronic circuit breaker | |
DE102013109827B4 (en) | A method for minimizing the harmonic load and welding power source caused by a welding power source for performing the method | |
DE102019129413B4 (en) | Compensation device for leakage currents | |
EP0963024A1 (en) | Protective switching device | |
DE19641183C2 (en) | Circuit arrangement for current detection of a current conductor for controlling electronically controllable tripping devices | |
EP3714539B1 (en) | Short circuit-resistant converter with direct current control | |
WO2004019474A1 (en) | Mains plug | |
DE10254698A1 (en) | power plug | |
DE19830065C1 (en) | Operating method for microprocessor-based over-current release of circuit breaker | |
DE4305339C2 (en) | Power source | |
EP0255658B1 (en) | Device for influencing a switching apparatus | |
DE3909761C2 (en) | ||
WO2000001049A1 (en) | Method for operating an electronic overcurrent trip for a power circuit breaker | |
DE102018217977A1 (en) | Method and device for adjusting PWM values of a field-oriented control of an electrical machine | |
DE102007060222B4 (en) | Generator device with current discharge elements | |
DE8812436U1 (en) | Device for generating a smoothed direct voltage from an alternating or three-phase voltage source | |
WO2018184814A1 (en) | Device and method for actuating an inverter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20080313 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
17Q | First examination report despatched |
Effective date: 20091007 |
|
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 609253 Country of ref document: AT Kind code of ref document: T Effective date: 20130515 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502006012768 Country of ref document: DE Effective date: 20130620 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: TROESCH SCHEIDEGGER WERNER AG, CH |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2421588 Country of ref document: ES Kind code of ref document: T3 Effective date: 20130904 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: VDEP Effective date: 20130424 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130725 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130826 Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130424 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130424 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130424 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130824 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130424 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130424 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130424 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130424 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130724 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130424 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130424 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130424 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130424 |
|
BERE | Be: lapsed |
Owner name: FRANZ HAIMER MASCHINENBAU K.G. Effective date: 20130831 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130424 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130424 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20140127 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20130828 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130424 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502006012768 Country of ref document: DE Effective date: 20140127 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130831 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130828 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130828 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 609253 Country of ref document: AT Kind code of ref document: T Effective date: 20130828 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20140820 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130828 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20060828 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130828 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 10 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150831 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150831 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 12 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: TR Payment date: 20220818 Year of fee payment: 17 Ref country code: IT Payment date: 20220831 Year of fee payment: 17 Ref country code: ES Payment date: 20220919 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20220822 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20230822 Year of fee payment: 18 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20231106 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230828 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230831 |