WO2020221712A1 - Réduction du spectre de tension perturbatrice dans des convertisseurs parallèles et cadencés avec un décalage de phase au moyen d'une adaptation dynamique du décalage de phase - Google Patents

Réduction du spectre de tension perturbatrice dans des convertisseurs parallèles et cadencés avec un décalage de phase au moyen d'une adaptation dynamique du décalage de phase Download PDF

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Publication number
WO2020221712A1
WO2020221712A1 PCT/EP2020/061682 EP2020061682W WO2020221712A1 WO 2020221712 A1 WO2020221712 A1 WO 2020221712A1 EP 2020061682 W EP2020061682 W EP 2020061682W WO 2020221712 A1 WO2020221712 A1 WO 2020221712A1
Authority
WO
WIPO (PCT)
Prior art keywords
phase
cell arrangement
conduction path
frequency
conductor loop
Prior art date
Application number
PCT/EP2020/061682
Other languages
German (de)
English (en)
Inventor
Sebastian Schroth
Original Assignee
Ebm-Papst Mulfingen Gmbh & Co. Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ebm-Papst Mulfingen Gmbh & Co. Kg filed Critical Ebm-Papst Mulfingen Gmbh & Co. Kg
Priority to EP20725628.0A priority Critical patent/EP3874589A1/fr
Priority to CN202080009991.3A priority patent/CN113330675A/zh
Publication of WO2020221712A1 publication Critical patent/WO2020221712A1/fr

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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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
    • 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
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • 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
    • H02M1/38—Means for preventing simultaneous conduction of switches
    • 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
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
    • 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
    • H02M3/1584—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 with a plurality of power processing stages connected in parallel
    • 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
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • H02M1/15—Arrangements for reducing ripples from dc input or output using active 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
    • 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
    • H02M3/1584—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 with a plurality of power processing stages connected in parallel
    • H02M3/1586—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 with a plurality of power processing stages connected in parallel switched with a phase shift, i.e. interleaved

Definitions

  • the present invention relates to a switching cell and a method for reducing the radio interference voltage of an electronic commutation device.
  • Switching power supplies and commutation devices generate as a result of them high frequency radio interference. These propagate by means of electromagnetic fields in free space and via the mains connection cables in the form of high-frequency voltages and currents.
  • High-frequency switching devices emit radio interference radiation. This is measured as the radio interference field strength in (pV / m).
  • the intensity of the radio interference radiation depends, for example, on the steepness of the edges of the switched currents and voltages and, to a very large extent, on the structure of the circuit. For this purpose, devices and solutions have become known from the prior art which attempt to reduce the interference voltage.
  • a circuit arrangement for generating a direct voltage from a sinusoidal input voltage is known from EP 0 223 315 B1, by means of which the interference voltages are reduced at low frequencies.
  • the known circuit arrangement comprises a switched-mode power supply comprising a diode, a coil, a capacitor and a transistor, to which the essentially sinusoidal input voltage is applied via a rectifier and whose elements are arranged such that in the conductive state of the transistor, the diode is blocked and the coil current flows at least through the transistor and in the blocked state through the diode and a parallel circuit of a load and the capacitor.
  • switching pulses for the transistor are generated from the input voltage, the frequency of which changes continuously over time between a minimum frequency at the maximum value of the rectified input voltage and a maximum frequency at the minimum value.
  • a non-electrically isolating further switched-mode power supply is connected between the rectifier and the capacitor, which means a high circuit complexity.
  • Attenuators are known from DE 35 37 536 A, with which lossy damping of back oscillation pulses can be carried out on high-frequency switches.
  • Such circuits can be used in particular for reducing high-frequency interference, since they limit the rate of rise of the reverse voltage at the high-frequency switch.
  • the faster the voltage at the high-frequency switch can rise when switching to the blocked state the greater the capacitive interference currents that flow in the parasitic capacities around the high-frequency switch, for example a connection of the high-frequency switch connected to a heat sink and ground. If such disturbances are not combated from the outset, complex line filters may be necessary to suppress them.
  • the described attenuators also represent additional circuit complexity.
  • the circuit complexity becomes particularly high if the described, known measures for suppressing the low-frequency interference and the high-frequency interference have to be used together in a power supply circuit.
  • the invention has the object of providing a circuit arrangement which, with little circuit complexity, leads to a reduction in the radio interference voltage and in particular in the harmonics and harmonics of the switching frequency.
  • phase offset of the circuit is changed dynamically, in particular by operating at least two clocked power electronic switching cells in parallel by means of a targeted dynamic phase shift of the carrier signal modulated by the power electronic switching cells, thereby reducing the radio interference voltage in a targeted manner.
  • phase offset of the carrier of the modulation scheme of at least one switching cell of the switching cell arrangement is a phase offset of the carrier of the modulation scheme of at least one switching cell of the switching cell arrangement.
  • At least one switching cell of the switching cell arrangement takes place through a variation of the phase offset and through frequency jittering of the modulation scheme.
  • a switching cell arrangement with the following properties is proposed for this purpose:
  • the phase shift of the circuit is changed dynamically in such a way that the radio interference voltage spectrum (FSS) is reduced.
  • FSS radio interference voltage spectrum
  • the phase offset can be varied according to a predetermined function.
  • the circuit is designed in such a way that the phase shift takes place so quickly that it leads to a reduction in the radio interference voltage spectrum (FSS) due to a limited pulse width of a measuring receiver.
  • FSS radio interference voltage spectrum
  • the switching cell arrangement has the following for this purpose: a. with at least two parallel conduction paths with are a common input-side first terminal for supplying a an AC input voltage U and the second common Lei processing nodes, each with a first common output-side terminal for providing an output AC voltage U aU s ver connected a first conductor loop which one common line node, respectively, and b. a second conductor loop with at least two parallel Lei processing paths which a common management nodes, each with a common input-side second terminal for supplying the input AC voltage U and the second common Lei processing nodes each having a common second output-side terminal for providing the output AC voltage are U from ver inhibited c.
  • control circuit is designed to superimpose a frequency jittering to change the frequency of the phase shift achieved in addition to the phase shift f of the currents ii ... i n .
  • the first switch is arranged in an electrical conduction path between the first conduction path of the first conductor loop and the first conduction path of the second conductor loop.
  • the second switch is arranged in an electrical conduction path between the second conduction path of the first conductor loop and the second conduction path of the second conductor loop.
  • An embodiment is further advantageous in which a first diode is arranged in the first electrical conduction path of the second conductor loop and, furthermore, a second diode is arranged in the second electrical conduction path of the second conductor loop.
  • the switches are electronic switches, in particular power semiconductor Switches are.
  • Another aspect of the present invention relates (in addition to the previously explained description of the device) to a method for reducing the radio interference voltage of an electronic commutation device by means of a switch cell arrangement as described above with at least the following step.
  • a core of the invention relates to the aspect that the phase shift f is changed dynamically.
  • phase shift f This is achieved by using the control circuit of the phase shift f, a frequency jittering is superimposed to quickly change the frequency.
  • the change in phase shift used here is particularly effective when the change is in the range of 13 kHz.
  • phase position is changed from 180 ° to 90 ° or from 90 ° to 45 ° by means of phase jittering.
  • FIG. 3 shows a view of a first measurement curve (interleaved 180 °);
  • FIG. 6 shows a view of a fourth measurement curve (interleaved jittered).
  • FIG. 1 shows an exemplary switching cell arrangement 1.
  • This switching cell arrangement 1 consists of a first Letterschleife LS1 with two parallel line paths 12, 13 of which one common line node 10 is connected to a common input-side first connection U ei for feeding in an input AC voltage U a .
  • a second common line node 11 is connected to a respective first ge common output-side terminal U ai to provide an AC output voltage U a u s.
  • the input voltage is lower than the output voltage and the arrangement is used analogously to a step-up converter.
  • a second conductor loop LS2 has two parallel line paths 22, 23 of which one common line node 20 is each connected to a common second connection U e 2 on the input side for feeding in the AC input voltage U em .
  • Their second common line node 21 is, as can be seen in FIG. 1, connected to a common second connection U a2 on the output side for providing said output AC voltage U out .
  • Line paths 30, 31, each with a switch S1, S2, are provided between the two conductor loops LS1, LS2.
  • a first diode D1 is in the first electrical conduction path 22 of the second conductor loop LS2 after the branch node to the conduction path
  • the switch S1 When the switch S1 is switched on, the current i1 in the coil L1 increases. If the switch S1 is then opened again in the step-up converter mode mentioned, the current i1 flows continuously through the coil L1 and through the diode D1 and drops again in the process.
  • the switch S2 When the switch S2 is switched on, the current i2 in the coil L2 increases. If the switch S2 is subsequently opened again in the step-up converter mode mentioned, the current i2 flows steadily through the coil L2 and through the diode D2 and decreases again. If further identical commutation cells are used, the input current is divided between the individual stages.
  • first and second conductor loops can be provided which, together with the respectively adjacent conductor loop, form two line paths arranged in parallel, one of which is a common line node with the common input-side connection for feeding in an AC input voltage and its second common line node with the common output-side connection are connected and between the conductor loops a further conduction path each with a further switch is provided, so that a cascade-like parallel connection of such switching cells results.
  • the radio interference measuring receiver used for measuring the radio interference voltage according to CISPR16 it has a defined pulse bandwidth that is divided into different ranges depending on the measuring frequency and has a bandwidth of 9 kHz in the 150kHz-30MHz range.
  • the solution now consists in changing the phase position of the individual commutation cells (each consisting of a line path in the upper and lower conductor loop, the respective coil and the diode in the upper path and the switch with the connection path) to one another so quickly that the through Alternate the phase-shifted clocking harmonics.
  • the phase position is changed so quickly that this change is over half the pulse bandwidth of the measuring receiver, which reduces the measured interference.
  • the quotient of the clock frequency and phase position change preferably corresponds to frequency is an integer multiple, which has a positive effect on the control behavior.
  • a phase position is changed from 180 ° to 90 ° (or, as shown in the measurements, from 90 ° to 45 °) and back again.
  • the resulting harmonics which are influenced by the respective interleaving, are thus reduced and the filter required to meet the EMC standards can be reduced.
  • FIGS. 3 to 6 show an example of the spectrum of a normalized mean-value-free current that is output via a signal generator to the input of the measuring receiver.
  • the second harmonic is missing, since only the 130 kHz and multiples thereof are masked out.
  • the third harmonic is missing at 260 kHz.
  • the fourth harmonic is missing.
  • the advantage of the dynamic phase position change is clearly shown by the lowest amplitudes in FIG. 6 in which a mode “Interleaved jittered from 45 ° to 90 ° with 13 kHz phase position change frequency” is shown.
  • the method can also be operated in combination with a frequency variation in order to achieve a further smoothing of the spectrum.
  • the method described can also be used for motor commutation when operating two or more inverters in parallel, for example.
  • the change in the phase position can be controlled by means of a mathematical func on, so several phase positions with different transitions (jump, constant change, etc.) as well as one continuously changing phase can be used.
  • the respective time spans in the respective phase positions can also be selected to be of different lengths.
  • the method according to the invention has effects not only on the input current, but also on the disturbances caused jointly by the switching cells.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Inverter Devices (AREA)
  • Dc-Dc Converters (AREA)

Abstract

L'invention concerne un ensemble de cellules de commutation (1) et un procédé pour réduire la tension perturbatrice d'un dispositif de commutation électronique.
PCT/EP2020/061682 2019-04-29 2020-04-28 Réduction du spectre de tension perturbatrice dans des convertisseurs parallèles et cadencés avec un décalage de phase au moyen d'une adaptation dynamique du décalage de phase WO2020221712A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20725628.0A EP3874589A1 (fr) 2019-04-29 2020-04-28 Réduction du spectre de tension perturbatrice dans des convertisseurs parallèles et cadencés avec un décalage de phase au moyen d'une adaptation dynamique du décalage de phase
CN202080009991.3A CN113330675A (zh) 2019-04-29 2020-04-28 通过相位偏移的动态调节在并联且相位偏移的时钟转换器中降低无线电噪声电压频谱

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019110988.4 2019-04-29
DE102019110988.4A DE102019110988A1 (de) 2019-04-29 2019-04-29 Schaltzellenanordnung zur reduktion des funkstörspannungsspektrums einer elektronischen kommutierungseinrichtung

Publications (1)

Publication Number Publication Date
WO2020221712A1 true WO2020221712A1 (fr) 2020-11-05

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PCT/EP2020/061682 WO2020221712A1 (fr) 2019-04-29 2020-04-28 Réduction du spectre de tension perturbatrice dans des convertisseurs parallèles et cadencés avec un décalage de phase au moyen d'une adaptation dynamique du décalage de phase

Country Status (4)

Country Link
EP (1) EP3874589A1 (fr)
CN (2) CN211508898U (fr)
DE (1) DE102019110988A1 (fr)
WO (1) WO2020221712A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019110988A1 (de) * 2019-04-29 2020-10-29 Ebm-Papst Mulfingen Gmbh & Co. Kg Schaltzellenanordnung zur reduktion des funkstörspannungsspektrums einer elektronischen kommutierungseinrichtung

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DE3537536A1 (de) 1985-10-22 1987-04-23 Walter Hirschmann Eintakt- sperr- oder durchflusswandler mit geringer sperrspannung fuer den schaltertransistor
EP0223315B1 (fr) 1985-11-22 1990-02-28 Philips Patentverwaltung GmbH Disposition de circuit pour produire une tension continue à partir d'une tension d'entrée sinusoidale
US20060158163A1 (en) * 2005-01-18 2006-07-20 Brian Machesney Low-noise switching voltage regulator and methods therefor
US20120014148A1 (en) * 2010-07-16 2012-01-19 Qian Li Adaptive on-time control for power factor correction stage light load efficiency
DE102014119502B3 (de) * 2014-12-23 2016-03-24 Sma Solar Technology Ag Netzgekoppelter Wechselrichter, Wechselrichteranordnung und Betriebsverfahren für eine Wechselrichteranordnung
DE102016213068A1 (de) * 2016-07-18 2018-01-18 Robert Bosch Gmbh Schaltwandleranordnung für ein Fahrzeug
DE102018219277A1 (de) * 2018-11-12 2020-05-14 Kaco New Energy Gmbh Verfahren zum Betreiben eines PV-Wechselrichters und PV-Wechselrichter

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DE102019110988A1 (de) * 2019-04-29 2020-10-29 Ebm-Papst Mulfingen Gmbh & Co. Kg Schaltzellenanordnung zur reduktion des funkstörspannungsspektrums einer elektronischen kommutierungseinrichtung

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537536A1 (de) 1985-10-22 1987-04-23 Walter Hirschmann Eintakt- sperr- oder durchflusswandler mit geringer sperrspannung fuer den schaltertransistor
EP0223315B1 (fr) 1985-11-22 1990-02-28 Philips Patentverwaltung GmbH Disposition de circuit pour produire une tension continue à partir d'une tension d'entrée sinusoidale
US20060158163A1 (en) * 2005-01-18 2006-07-20 Brian Machesney Low-noise switching voltage regulator and methods therefor
US20120014148A1 (en) * 2010-07-16 2012-01-19 Qian Li Adaptive on-time control for power factor correction stage light load efficiency
DE102014119502B3 (de) * 2014-12-23 2016-03-24 Sma Solar Technology Ag Netzgekoppelter Wechselrichter, Wechselrichteranordnung und Betriebsverfahren für eine Wechselrichteranordnung
DE102016213068A1 (de) * 2016-07-18 2018-01-18 Robert Bosch Gmbh Schaltwandleranordnung für ein Fahrzeug
DE102018219277A1 (de) * 2018-11-12 2020-05-14 Kaco New Energy Gmbh Verfahren zum Betreiben eines PV-Wechselrichters und PV-Wechselrichter

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Publication number Publication date
EP3874589A1 (fr) 2021-09-08
CN113330675A (zh) 2021-08-31
CN211508898U (zh) 2020-09-15
DE102019110988A1 (de) 2020-10-29

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