WO2012072075A2 - Alimentation électrique - Google Patents

Alimentation électrique Download PDF

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Publication number
WO2012072075A2
WO2012072075A2 PCT/DK2011/000142 DK2011000142W WO2012072075A2 WO 2012072075 A2 WO2012072075 A2 WO 2012072075A2 DK 2011000142 W DK2011000142 W DK 2011000142W WO 2012072075 A2 WO2012072075 A2 WO 2012072075A2
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
power supply
circuit
converter
voltages
Prior art date
Application number
PCT/DK2011/000142
Other languages
English (en)
Other versions
WO2012072075A3 (fr
Inventor
Hans Ole Hjulmand Kragh
Original Assignee
Hydria Elektronik Aps
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 Hydria Elektronik Aps filed Critical Hydria Elektronik Aps
Priority to EP11799229.7A priority Critical patent/EP2647118A2/fr
Publication of WO2012072075A2 publication Critical patent/WO2012072075A2/fr
Publication of WO2012072075A3 publication Critical patent/WO2012072075A3/fr

Links

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
    • H02M7/2176—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 comprising a passive stage to generate a rectified sinusoidal voltage and a controlled switching element in series between such stage and the 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade
    • 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
    • H02M1/081—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters wherein the phase of the control voltage is adjustable with reference to the AC source
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection

Definitions

  • the invention relates to a power supply for electronic equipment, such as measurement equipment and signal transmitters for industrial control systems, said power supply being adapted to be connected to a wide range of voltages on the supply network and comprising an input stage with an overload protection, a circuit for rectifying the supply voltage, a phase cut circuit for determining the input voltage to a DC/DC converter as well as a DC/DC converter of the switch mode type.
  • the document US 5,587,895 A discloses an AC/DC converter which is capable of operating in a range from 24 Vac to 277 Vac.
  • the power supply is equipped with a half way rectifier 12, and the rectified voltage is connected to a MOSFET transistor 14, which supplies a charging current to a charging capacitor 18 on the dc side, where a load L is arranged.
  • the load and the control circuit of the MOSFET are supplied exclusively from the capacitor.
  • the document describes a power supply with a single unstabilized output, which is not galvanically separated from the supply network.
  • the document EP 0 651 499 A2 discloses an AC/DC converter comprising a half wave rectifier (D1 ), and where the rectified voltage is connected to a MOSFET (QM2), which supplies power to a stabilized series power supply (1 1 ) with a single output. The output is not galvanically separated from the supply network.
  • the circuit is adapted to compensate for sudden changes of the load.
  • the document US 6,169,391 B1 discloses an AC/DC converter, which comprises a rectifier, a control circuit and a linear voltage regulator. Via a voltage sensor, the control circuit controls a switch transistor, which is to keep the feed voltage over the charging capacitor so low as to enable the regulator to work.
  • the circuit is constructed to operate with a selected fixed mains voltage supply.
  • a power supply as described in the introductory portion of claim 1 , comprising an input stage with protection against overload and adapted for the connection of mains voltages in the range from 100 Vac to 690 Vac, a circuit for rectifying the supply voltage, a phase cut circuit which blocks voltages from the rectifier circuit exceeding 290 Vac, and which determines the input voltage to a DC/DC converter, as well as a DC/DC converter of the switch mode type.
  • Coupling of the input stage, the rectifier circuit and the phase cut circuit with a DC/DC converter provides an AC/DC converter which may be connected to mains voltages in the range from 100 Vac to 690 Vac, and which is capable of supplying a stabilized voltage to supply measurement equipment and signal transmitters. It is moreover ensured that the stabilized voltage is galvanically separated from the supply network. Further, it is ensured that a mains transformer may be omitted, and that it is possible to use diodes and charging capacitors having low inverse and/or testing voltages, thereby allowing the whole circuit to be built on circuit boards and allowing these to be arranged in industrial standard type modules.
  • the input stage When the input stage is arranged such that it comprises a resistor with a protection function, a varistor and a power-limiting resistor, it is ensured that the power supply may be protected against overvoltages or surge pulses arisen on the supply network.
  • the rectifier circuit comprises a set of diodes arranged in series with the input stage, a single rectification with half waves of the applied sine voltage is achieved.
  • the phase cut circuit comprises a switch transistor and a control circuit, said control circuit comprising a voltage circuit which keeps the switch transistor in a conductive state, as well as an optocoupler and a comparator to interrupt the conductive state of the transistor, it is ensured that current and power to the subsequent DC/DC converter may be regulated.
  • the one input of the comparator is connected to a reference voltage, and the other input is connected to the rectified half wave voltage via a voltage divider, it is ensured that the comparator activates the optocoupler when the divided half wave voltage exceeds the reference voltage, and cuts off the switch transistor.
  • the comparator When, as stated in claim 5, the comparator receives its voltage supply by passing the power consumption of the DC/DC converter through a zener diode and filtering the produced zener voltage in a capacitive filter, access to a supply which does not load the outputs of the converter is achieved. At the same time, the outputs of the converter are kept galvanically separate from the supply network.
  • the DC/DC converter is adapted to work with input voltages in the range from 100 Vdc to 300 Vdc, it is ensured that a commercially available converter may be used.
  • the outputs of the DC/DC converter are galvanically separated via a circuit which comprises a switch transformer and an optocoupler, a high insulation and security between the outputs and the supply network are achieved.
  • a circuit which comprises a switch transformer and an optocoupler, a high insulation and security between the outputs and the supply network are achieved.
  • the inverse voltage of the rectifier diodes does not exceed 1000 V, and that the testing voltage of the charging capacitor does not exceed 350 Vdc, it being ensured thereby that components with relatively small dimensions may be used, and that the area of the power supply may be reduced.
  • the switch transistor is a MOSFET switch transistor with a maximum voltage of 1000 Vdc.
  • fig. 1 shows a diagram of the power supply as well as some graphs showing current or voltages at selected points of the diagram.
  • FIG. 1 shows that the power supply 1 comprises an input stage 2, a rectifier circuit 3, a phase cut circuit 4 and a DC/DC converter 5.
  • the figure also shows the graphs A - D, which show current or voltages at selected points in the circuit.
  • the input stage 2 is connected to a supply network with a sine-shaped voltage from 100 Vac and up to 690 Vac.
  • R1 is a resistor with incorporated protection function, and R2 serves as a current limiter in the event that the varistor VR1 opens because of overvoltage or a surge pulse arisen in the supply network.
  • the diodes D1 , D2 are coupled to the input stage 2 and involve a single rectification of the applied sine voltage, so as to produce a half wave with a shape as shown in the graph A.
  • the phase cut circuit 4 is based on a switch transistor Q1 , which, most advantageously, might be a MOSFET transistor with a max voltage of 1000 Vdc.
  • a switch transistor Q1 which, most advantageously, might be a MOSFET transistor with a max voltage of 1000 Vdc.
  • the gate source of the transistor Via the resistor R5, the zener diode D3 and the resistor R6, the gate source of the transistor is biased with a voltage of 12 V, and is thereby conductive as long as the optocoupler U2 is interrupted, and the half wave of the rectified mains voltage has an amplitude which causes Q1 to be in a conductive state.
  • the optocoupler U2 is controlled by the comparator circuit, which is based on the analog amplifier U1.
  • the reference voltage of the comparator is obtained via the zener diode D4, which is connected to the voltage supply of the comparator via the resistor R7.
  • the zener voltage of D4 is typically 5.6 V.
  • the reference voltage is connected to the +input on the analog amplifier.
  • the input signal of the comparator is obtained from the voltage divider R3, R4, so that the single- rectified voltage is divided down to 5.6 V, when the peak value of the half wave is 290 V (see the graph A).
  • the output of the comparator is an open collector, which is connected to the cathode of the optocoupler U2 via the resistor R8 and the zener diode D5.
  • the anode is connected to a voltage of 12 V.
  • the comparator circuit requires a voltage supply. It is established via the power consumption of the converter, which is passed through the zener diode D8. D8 gives a voltage drop of 15 V, and the zener voltage is filtered through the capacitors C1 , C2 and the diode D9 to a voltage of 12 Vdc.
  • the phase cut function is as follows:
  • the output D of the comparator switches to a low level, the optocoupler U2 is activated, its transistor output becomes conductive and short-circuits the gate source of the switch transistor Q1 , whereby this is cut off. This means that charging of the charging capacitors C3, C4 is interrupted.
  • the charging starts again when the half wave has a value which is larger than the voltage of the charging capacitors C3, C4.
  • the diode D6 blocks discharging of the capacitors C3, C4 through the phase cut circuit in the pause.
  • the graph B shows the course of the charging current I in each half wave cycle.
  • the graph C shows the voltage of the charging capacitors C3, C4 of the DC/DC converter.
  • the graph D shows the output voltage of the comparator U1.
  • the phase cut circuit ensures that the voltage of the charging capacitors does not exceed 280 V, even though the supply voltage is up to 690 Vac.
  • the peak value of the rectified half wave is 975 V in this case, but the voltage to the DC/DC converter is kept effectively down by means of the switch transistor Q1.
  • the DC/DC converter comprises a circuit with a switch transformer T1 and an optocoupler U3. Both components ensure that there is a galvanic separation between the 12 V outputs of the converter and the supply network.
  • D7 is a transorber with a rated voltage of 330 V. It is introduced as a protection against destruction of the DC/DC converter. If the switch transistor Q1 fails and short-circuits, the transorber opens and causes the protection resistor R1 to cut off the mains voltage supply.
  • R3, R5 and R6 are selected such that they can withstand the high voltage. Typical values of R3 is 1 Mohm and for R5 and R6 0.5 Mohm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Rectifiers (AREA)

Abstract

L'invention concerne une alimentation électrique (1) pour un équipement électronique, tel qu'un équipement de mesure et des émetteurs de signaux pour des systèmes de commande industriels, ladite alimentation électrique étant adaptée pour être connectée à une large plage de tensions du réseau d'alimentation et comprenant un étage d'entrée (2) doté d'une protection de surcharge, un circuit (3) permettant de redresser la tension d'alimentation, et un circuit de découpe de phase (4) permettant de déterminer la tension d'entrée d'un convertisseur continu/continu ainsi qu'un convertisseur continu/continu (5) du type à mode de commutation. Ceci permet d'obtenir une alimentation électrique avec un convertisseur alternatif/continu qui peut être connecté à une alimentation de tension de réseau avec des tensions dans la plage de 100 Vca à 690 Vca, et qui a une tension de sortie stabilisée. L'invention concerne en outre un circuit sans transformateur principal, dans lequel la tension inverse du redresseur et la tension d'essai du condensateur de charge sont basses, le circuit pouvant être incorporé dans un module industriel.
PCT/DK2011/000142 2010-12-01 2011-11-29 Alimentation électrique WO2012072075A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11799229.7A EP2647118A2 (fr) 2010-12-01 2011-11-29 Alimentation électrique

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DKPA201001089 2010-12-01
DKPA201001089 2010-12-01
DKPA201001129 2010-12-16
DKPA201001129A DK177225B1 (da) 2010-12-01 2010-12-16 AC/DC Strømforsyning med fasesnitkredsløb

Publications (2)

Publication Number Publication Date
WO2012072075A2 true WO2012072075A2 (fr) 2012-06-07
WO2012072075A3 WO2012072075A3 (fr) 2012-11-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2011/000142 WO2012072075A2 (fr) 2010-12-01 2011-11-29 Alimentation électrique

Country Status (3)

Country Link
EP (1) EP2647118A2 (fr)
DK (1) DK177225B1 (fr)
WO (1) WO2012072075A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103997279A (zh) * 2013-03-25 2014-08-20 穆尔芬根依必派特股份有限公司 用于控制无刷电机的方法和控制电路
EP2775604A1 (fr) * 2013-03-07 2014-09-10 Nxp B.V. Convertisseur de puissance principale et procédés de fonctionnement et équipement l'incorporant
WO2023006587A1 (fr) * 2021-07-29 2023-02-02 Truma Gerätetechnik GmbH & Co. KG Ensemble de surveillance et système comprenant un ensemble de surveillance

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0651499A2 (fr) 1993-11-01 1995-05-03 Kabushiki Kaisha Toshiba Convertisseur de tension alternative à tension continue utilisant un commutateur non-verrouillant
US5587895A (en) 1994-09-07 1996-12-24 Harkins; Michael T. Electrical power supply with single output from range of input voltages
US6169391B1 (en) 1999-07-12 2001-01-02 Supertex, Inc. Device for converting high voltage alternating current to low voltage direct current

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5517402A (en) * 1992-06-04 1996-05-14 Sanden Corporation Inverter circuit with an improved inverter driving circuit
US7355867B2 (en) * 2004-08-17 2008-04-08 Elster Electricity, Llc Power supply for an electric meter having a high-voltage regulator that limits the voltage applied to certain components below the normal operating input voltage
CN101399499A (zh) * 2007-09-26 2009-04-01 力博特公司 一种宽输入电压范围的电源模块
US8451627B2 (en) * 2007-11-16 2013-05-28 Itron, Inc. Devices and methods for converting alternating current (AC) power to direct current (DC) power

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0651499A2 (fr) 1993-11-01 1995-05-03 Kabushiki Kaisha Toshiba Convertisseur de tension alternative à tension continue utilisant un commutateur non-verrouillant
US5587895A (en) 1994-09-07 1996-12-24 Harkins; Michael T. Electrical power supply with single output from range of input voltages
US6169391B1 (en) 1999-07-12 2001-01-02 Supertex, Inc. Device for converting high voltage alternating current to low voltage direct current

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2647118A2

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2775604A1 (fr) * 2013-03-07 2014-09-10 Nxp B.V. Convertisseur de puissance principale et procédés de fonctionnement et équipement l'incorporant
CN103997279A (zh) * 2013-03-25 2014-08-20 穆尔芬根依必派特股份有限公司 用于控制无刷电机的方法和控制电路
EP2784931A1 (fr) * 2013-03-25 2014-10-01 ebm-papst Mulfingen GmbH & Co. KG Procédé et circuit de commande destinés à la commande d'un moteur électrique sans brosse
WO2023006587A1 (fr) * 2021-07-29 2023-02-02 Truma Gerätetechnik GmbH & Co. KG Ensemble de surveillance et système comprenant un ensemble de surveillance

Also Published As

Publication number Publication date
DK177225B1 (da) 2012-07-23
WO2012072075A3 (fr) 2012-11-08
EP2647118A2 (fr) 2013-10-09
DK201001129A (da) 2012-06-02

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