WO2016142218A1 - Resonanzwandler mit einem transformator mit mittelpunktanzapfung - Google Patents
Resonanzwandler mit einem transformator mit mittelpunktanzapfung Download PDFInfo
- Publication number
- WO2016142218A1 WO2016142218A1 PCT/EP2016/054326 EP2016054326W WO2016142218A1 WO 2016142218 A1 WO2016142218 A1 WO 2016142218A1 EP 2016054326 W EP2016054326 W EP 2016054326W WO 2016142218 A1 WO2016142218 A1 WO 2016142218A1
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- Prior art keywords
- output
- voltage
- resonant converter
- circuit
- transformer
- Prior art date
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/338—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1588—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load comprising at least one synchronous rectifier element
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/24—Electric supply or control circuits therefor
- B23K11/26—Storage discharge welding
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/26—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes without control electrode or semiconductor devices without control electrode to produce the intermediate ac
-
- 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
- H02M7/21—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 using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
- G01R17/20—AC or DC potentiometric measuring arrangements
-
- 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
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Definitions
- the subject invention relates to a resonant converter with a transformer with center tap and a resonant circuit, wherein the center of the secondary side of the transformer is connected via a first output line to a first output pole and the two outer terminals of the secondary side of the transformer are connected via an electrical switching element and connected via a second output line to a second output terminal, and the method for operating the resonant converter.
- transformers with center tap on the secondary side are often used.
- An example of this is a power converter 1 in the form of a known resonant converter 1 as shown in Figure 1, in which through the inductor L R , the capacitance C R and the primary side of the transformer T a
- Resonant circuit is formed.
- the resonant converter 1 is excited by a pulse pattern at the input U E to vibrate.
- the pulse pattern can be realized, for example, by a known switch arrangement and a PWM control (not shown in FIG. 1). This vibration is transmitted through the transformer T and rectified on the secondary side.
- the resonant converter 1 is operated pulsed idle. To the input U E of the resonant converter voltage pulses are applied for this purpose for a certain period of time. The vibration generated by the resonant converter 1 charges the smoothing capacitor C3 on the secondary side via the diode D3.
- the smoothing capacitor C3 discharges via the resistor R1. Therefore arises at the output of the resonant converter 1, an average output voltage U A, which may be held over adjustment of the voltage pulses at the input to a desired level. In normal operation of the resonant converter 1, this additional circuit 7 has no influence. Nevertheless, the smoothing capacitor C3 must be designed for the maximum output voltage U A and a maximum pulse frequency and is therefore to be dimensioned correspondingly large, which requires appropriate space on the circuit substrate 3.
- the switching elements on the secondary side of the resonant converter 1 are usually on a circuit carrier 3, such as a circuit board (as in Figure 2), or the like, arranged.
- the circuit elements can also be connected via copper brackets (especially at very high currents or voltages).
- the plus output line 2 is usually led to the outside as a separate line and not via a circuit carrier 3, on which a voltage measurement 4 for measuring the output voltage U A (FIG. 2) or the additional circuit 7 (FIG. 3) is implemented.
- this makes it necessary to connect the positive output line 2 to the circuit carrier 3 via an additional connecting line 5.
- a socket 6 is arranged on the circuit board 3, to which the connecting line 5 is connected.
- the additional connection line 5 and the need for a socket 6 on the circuit board 3 also increase the complexity of the electrical assembly.
- US Pat. No. 6,288,919 B1 shows such a resonant converter, which uses a smoothing capacitor at the output, which connects the center point to the additional circuit as a plus output line.
- two capacitors are used in parallel with the switching elements to allow for rapid decay of current flow in the switching elements.
- connecting line 5 dissolves over time, or that is completely forgotten in the assembly to connect the connecting line 5 with the circuit substrate 3, or with the plus-output line. Both can lead to failure of the resonant converter 1.
- the connecting line 5 is removed, an overvoltage may occur at the diodes D1, D2, which may also destroy them. It is therefore desirable to dispense with this additional connection line 5, which is a source of error.
- an output voltage is present between a first output terminal and a second output terminal, so that the first output terminal can be connected directly via the first output line without further connection in the form of an output-side smoothing capacitor between the first output terminal and the second output terminal.
- Gangpol is guided to the outside and parallel to the electrical switching elements, a respective capacitor is connected to maintain the output voltage at idle of the resonant converter.
- the capacitors During normal operation (ie with a connected load), the capacitors only have to conduct a half period of current each time and can therefore be dimensioned much smaller than in the circuit according to the prior art (FIG. 3). Thus, a possible circuit carrier can be made smaller.
- this also makes it possible to dispense with the hitherto necessary connection line between the first output terminal and the circuit carrier. Since the center is led out via the first output line in the form of the first output pole, and is not connected further, (in particular is dispensed with a smoothing capacitor between the first output pole and second output pole) can advantageously be dispensed with a connection of the center with the additional circuit of the secondary side of the resonant converter become. Thus, a possible source of error in the form of the above-mentioned connection lines for connecting the center to the additional circuit of the secondary side (for example on a circuit carrier, or by means of a copper bracket, etc.) is ruled out from the outset.
- capacitors For a faster discharge of the capacitors may be connected in parallel to the electrical switching elements in each case at least one discharge resistor.
- the output voltage of the resonant converter can be measured particularly advantageously if at least two resistors connected in series are connected between the two outer terminals in order to form a measuring point between the two resistors, and a voltage measuring unit is provided which matches the output voltage between first and second output pole is applied, corresponding voltage between measuring point and second output pole measures.
- the output voltage can be measured without the need for a connecting line between the first output pole and voltage measuring unit as in the prior art ( Figure 2).
- the measurement of the output voltage also makes it possible to regulate the no-load voltage even when idling.
- the input voltage range of the voltage measuring unit can be reduced on account of the resulting voltage divider.
- the voltage measuring unit can thus be advantageously designed for a lower measuring voltage.
- FIG. 1 shows a typical resonant converter according to the prior art
- FIG. 2 shows the prior art voltage measurement on the secondary side of a transformer with center tap
- FIG. 1 shows a typical resonant converter according to the prior art
- FIG. 2 shows the prior art voltage measurement on the secondary side of a transformer with center tap
- FIG. 3 shows the auxiliary circuit customary in the prior art for regulating the output voltage of a series-parallel resonant converter when idling
- FIG. 7 shows a series-parallel resonant converter with inventive measuring arrangement for voltage measurement and secondary circuit for controlling the output voltage during idling.
- 4 shows a circuit arrangement 8 with a transformer T with secondary-side center tap.
- On the secondary side of the transformer T with center tap at least three ports are present.
- Outer Ports In general, however, it is stated that under a transformer with center tap according to the invention, the use of two or more transformer windings with common core, in which the secondary-side and the primary-side windings are each connected in series, is understood (as in Fig.5 shown).
- Independent transformers with parallel-connected primary windings and series-connected secondary windings are also included. An electrical connection between two series-connected secondary windings then corresponds to the center M, to which the first output line 10 can be connected.
- the secondary-side center M is guided via a first output line 10, here a plus output line, as the first output pole 12, here the positive pole, to the outside.
- the first output line 10 is in this case not via a circuit substrate 3, such as a circuit board, out, but out directly as a line to the outside.
- an output-side smoothing capacitor between the first output terminal 12 and the second output terminal 13 is dispensed with.
- the two outer, or non-series-connected, secondary-side terminals A1, A2 of the secondary side of the transformer T are each guided in a known manner to a first terminal of a switching element S1, S2.
- the respective second terminals of the switching elements S1, S2 are connected to each other and form the second output terminal 13, here the negative terminal of the rectifier, which is led to the outside with a second output line 1 1, here a negative output line.
- electrical switching elements S1, S2 If passive switching elements in the form of diodes are used as electrical switching elements S1, S2, a known center rectifier is obtained.
- electrical switching elements S1, S2 active switching elements such as semiconductor switches, eg MOSFETs, one obtains a known synchronous rectifier. Since the functions of a center rectifier and a synchronous rectifier are well known, and are irrelevant to the subject invention, will not be discussed in more detail here.
- the switching elements S1, S2 are arranged in a conventional manner on a circuit carrier 3. Of course, the circuit carrier 3 can also be designed to be split. Particularly in the case of active switching elements S1, S2, the power part with the active switching elements S1, S2 is often arranged on a separate circuit carrier 3.
- an electrical Messan- order 14 for measuring the output voltage U A is arranged on the circuit substrate 3 for voltage measurement.
- the circuit elements of the secondary side can also be connected to each other by copper brackets.
- a secondary-side circuit arrangement as a combination with circuit carrier 3 and copper bracket is conceivable.
- the measuring arrangement 14 for measuring the output voltage U A could be arranged on a circuit carrier 3 and the remaining circuit elements could be connected by means of copper bars.
- This measuring arrangement 14 for measuring the output voltage U A consists essentially of two resistors R3, R4, which are connected in series between the two outer terminals A1, A2 of the secondary side of the transformer T. As a result, a measuring point P is generated between the two resistors R3, R4, at which a voltage U P is established with respect to the second output pole 13, which corresponds to the output voltage U A present at the center M.
- This voltage U P at the measuring point P can be measured with any voltage measuring unit V and made available as an analog or digital measured value MW.
- the voltage measuring unit V can be designed as an amplifier circuit with an operational amplifier, wherein the output of the amplifier circuit is digitized in an analog-to-digital converter and is passed to the outside as a digital measured value MW.
- the voltage U P at the measuring point P corresponds to the output voltage U A at the midpoint M, that is to say the voltage at the first output terminal 12 in the exemplary embodiment shown. If the resistors R 3, R 4 are not the same, then the am Measuring point P is a span corresponding to the ratio of the resistors R3, R4. one. In both cases, the output voltage U A can thus be measured at the measuring point P by measuring the voltage U P of the measuring point P with respect to the second output pole 13, as indicated in FIG.
- the voltage U P at the measuring point P can be measured directly, but also the measurement via a voltage divider is conceivable. This allows the use of a voltage measuring unit V with a reduced input range, whereby circuit simplifications can be achieved.
- a voltage divider can be generated between measuring point P and second output pole 13 by means of an additional resistor R2, as indicated in FIG.
- the resistor R2 causes in connection with the resistors R3 and R4 at the measuring point P, a corresponding reduction of the voltage U P , which is nevertheless proportional to the output voltage U A.
- the resistor R2 can be divided in a known manner into two resistances in a known manner in order to achieve an adaptation to the input voltage range of the voltage measuring unit V.
- FIG. 5 shows a series-parallel resonant converter 1 with a primary-side series resonant circuit of inductor L R , resonant capacitor C R and the primary side of the transformer T, a secondary side parallel resonant circuit of oscillating capacitor C P and the secondary side of the transformer T and a center rectifier (ie with diodes D1, D2 as electrical switching elements S1, S2) on the secondary side.
- the primary side is not completely shown; in particular, the electrical circuit known per se for generating the illustrated input voltage U E is missing.
- the primary-side resonant circuit could be known but also designed as a parallel resonant circuit, in which the resonant capacitor C R, for example, is connected in parallel to the primary side of the transformer T.
- the resonant circuit could be known differently or even not formed on the secondary side.
- the diodes D1, D2 could be reversed polarity or be replaced by other electrical switching elements S1, S2.
- a secondary circuit 15 in which parallel to the electrical switching elements S1, S2, here diodes D1, D2, in each case at least one capacitor C1, C2 is switched.
- the secondary circuit 15 for setting the open circuit voltage.
- a desired output voltage U A is to be maintained at the resonant converter 1.
- t- ⁇ voltage pulses U E are applied to the primary side of the transformer T for a certain period of time, which excite the resonant circuit on the primary side.
- the excitation leads to a vibration on the secondary side of the transformer.
- the voltages applied to the capacitors C1, C2 also oscillate about the level of the output voltage U A.
- the capacitors C1, C2 are thereby charged during the excitation on the primary side in the time span t- ⁇ , which also leads to an increase in the no-load voltage at the output U A.
- the primary-side excitation for a second time period t 2 is interrupted. In this phase, the capacitors C1, C2 discharge.
- the two capacitors C1, C2 of the secondary circuit 15 can be dimensioned smaller than the smoothing capacitor C3 in the hitherto conventional circuit according to the prior art ( Figure 3).
- Figure 3 By omitting the smoothing capacitor C3, space can also be saved on the circuit carrier 3. Apart from this, so that the thermal load of the circuit substrate 3 can be reduced, which also results in that the circuit substrate 3 can be reduced in size.
- the smaller capacitance values C1, C2 in comparison to the smoothing capacitor C3 additionally cause the output voltage U A to decrease more rapidly during idling, which is advantageous in particular for use in welding current sources, because this allows the permitted maximum voltage to be reached more quickly after the welding has ended.
- the measurement arrangement 14 for voltage measurement and the Sekundarbescaria 15 for regulating the output voltage U A idling can also be combined, as shown in Figure 7, using a resonant converter 1 with central rectifier. Such a combination is particularly advantageous because then the output voltage U A at idle (open circuit voltage) by measuring the output voltage U A corresponding voltage U P at the measuring point P can be controlled to a desired value, or ensured a desired value of the open circuit voltage can be.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680014505.0A CN107431437B (zh) | 2015-03-09 | 2016-03-01 | 具有带有中心抽头的变压器的谐振变换器 |
US15/556,925 US10199941B2 (en) | 2015-03-09 | 2016-03-01 | Resonant converter having a transformer with central point tap |
DE112016001109.1T DE112016001109B4 (de) | 2015-03-09 | 2016-03-01 | Resonanzwandler mit einem transformator mit mittelpunktanzapfung |
JP2017547503A JP6807855B2 (ja) | 2015-03-09 | 2016-03-01 | センタータップ付きの変圧器を有する共振形コンバータ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50187/2015 | 2015-03-09 | ||
ATA50187/2015A AT516902A1 (de) | 2015-03-09 | 2015-03-09 | Resonanzwandler mit einem Transformator mit Mittelpunktanzapfung |
Publications (1)
Publication Number | Publication Date |
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WO2016142218A1 true WO2016142218A1 (de) | 2016-09-15 |
Family
ID=55446806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2016/054326 WO2016142218A1 (de) | 2015-03-09 | 2016-03-01 | Resonanzwandler mit einem transformator mit mittelpunktanzapfung |
Country Status (6)
Country | Link |
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US (1) | US10199941B2 (de) |
JP (1) | JP6807855B2 (de) |
CN (1) | CN107431437B (de) |
AT (1) | AT516902A1 (de) |
DE (1) | DE112016001109B4 (de) |
WO (1) | WO2016142218A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3482862A1 (de) | 2017-11-08 | 2019-05-15 | FRONIUS INTERNATIONAL GmbH | Verfahren zur berührungslosen zündung eines lichtbogens und schweissstromquelle zur durchführung eines zündverfahrens |
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DE2849170B1 (de) | 1978-11-13 | 1980-02-28 | Beluk Gmbh | Schaltungsanordnung zur Messung des Leistungsfaktors cos upsilon |
US4164016A (en) * | 1978-11-13 | 1979-08-07 | Esb Incorporated | Current sensing system |
US4860184A (en) * | 1987-09-23 | 1989-08-22 | Virginia Tech Intellectual Properties, Inc. | Half-bridge zero-voltage switched multi-resonant converters |
JP2751962B2 (ja) * | 1992-10-01 | 1998-05-18 | ネミック・ラムダ株式会社 | スイッチング電源装置 |
JPH06311743A (ja) * | 1993-04-23 | 1994-11-04 | Sanken Electric Co Ltd | Dc−dcコンバータ |
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Publication number | Priority date | Publication date | Assignee | Title |
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EP3482862A1 (de) | 2017-11-08 | 2019-05-15 | FRONIUS INTERNATIONAL GmbH | Verfahren zur berührungslosen zündung eines lichtbogens und schweissstromquelle zur durchführung eines zündverfahrens |
WO2019091934A1 (de) | 2017-11-08 | 2019-05-16 | Fronius International Gmbh | Verfahren zur berührungslosen zündung eines lichtbogens und schweissstromquelle zur durchführung eines zündverfahrens |
CN111344097A (zh) * | 2017-11-08 | 2020-06-26 | 弗罗纽斯国际有限公司 | 电弧的无接触点火方法和用于执行点火工艺的焊接电流源 |
JP2020535968A (ja) * | 2017-11-08 | 2020-12-10 | フロニウス・インテルナツィオナール・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツングFronius International Gmbh | アークの非接触点火の方法、および点火工程を実施するための溶接電流源 |
US11633800B2 (en) | 2017-11-08 | 2023-04-25 | Fronius International Gmbh | Method for contactlessly striking an arc and welding current source for carrying out a striking process |
Also Published As
Publication number | Publication date |
---|---|
CN107431437A (zh) | 2017-12-01 |
DE112016001109B4 (de) | 2022-06-30 |
US20180034371A1 (en) | 2018-02-01 |
DE112016001109A5 (de) | 2017-11-30 |
CN107431437B (zh) | 2020-07-07 |
US10199941B2 (en) | 2019-02-05 |
JP2018508175A (ja) | 2018-03-22 |
AT516902A1 (de) | 2016-09-15 |
JP6807855B2 (ja) | 2021-01-06 |
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