• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1509563 A.C.-D.C. conversion NEDERLANDSE GASUNIE NV 3 April 1975 [3 April 1974] 13781/75 Heading H2F [Also in Division H1] In an intrinsically safe converter, the supply mains is rectified at 2 and feeds a high frequency generator in the range 20-80 kHz which is coupled by means of a transformer 4 to one or more output circuits 7 each formed by a printed circuit board 12 containing a secondary winding 6, rectifier 13, smoothing circuit 14 . . . 16 and voltage regulator 17. The maximum values of resistance, inductance and capacitance in the output circuit are limited so that the circuit is intrinsically safe in gaseous atmospheres. As described, the transformer 4 may have a core of two U -sections of ferrite through one arm of which is threaded a plurality of printed circuit boards each containing the secondary 6 in printed circuit or other form together with the rectifying, smoothing and voltage stabilizing components 13 . . . 18. Transformer 1 may be a ferro-resonant constant voltage transformer.
    公开号:SU751338A3
    申请号:SU752118259
    申请日:1975-04-01
    公开日:1980-07-23
    发明作者:Генк Бурри Гармен Гейн Дийстельберген Петер；Уиллем Кореман Корнелис
    申请人:Н.Ф.Недерландсе Газуни (Фирма)；
    IPC主号:
    专利说明:

    (54) AC CONVERTER
    one
    The invention relates to a transformer circuit in which an alternating current voltage of 50 or 60 Hz is converted to a direct current voltage, which is converted to an alternating current voltage at a higher frequency, which in turn is transformed into one or more individual DC voltages.
    The known AC-to-DC converter containing the first transformer, the primary winding of which is powered from the industrial frequency AC source, is connected to the secondary winding of the first transformer, a rectifier with a smoothing filter, an inverter connected to the rectifier and the generated alternating current with a higher frequency, than industrial, and the second transformer with a ferromagnetic core, the primary winding of which is connected to the inverter, and having at least one secondary Coils, which is connected to a rectifier 1.
    This device is closest to the invention in its technical essence and the achieved result. PERMANENT
    Its disadvantage is low reliability.
    The purpose of the invention is to increase reliability.
    This is achieved by the fact that in an AC-to-DC converter, containing a first transformer, the primary winding of which is powered from a source of alternating current of industrial frequency, connected to the secondary winding of the first transformer, a rectifier with a smoothing filter, an inverter connected to the rectifier and the generator. alternating current with a higher frequency than the industrial one, and the second transformer with a ferromagnetic core, the primary winding of which is connected to the inverter, and having
    15 at least one secondary winding to which a rectifier is connected, the ferromagnetic core of the second transformer is made detachable from two C-shaped parts, on one composite rod of which the primary winding of the second transformer is placed, on the other - the secondary winding of the second transformer, and each of the secondary windings of the second transformer is made in the form of a flat printing of a spiral of not less than 20 turns, and placed together with a rectifier, which is made half-wave on a separate board, which additionally equipped with parallel co-capacitors, in the case of constant voltage from 12 to 24 V at the output, the total circuit capacity of each board is between 0.1 and 2 microfarads, the resistance is between 100 and 500 Ohms, and the frequency at the output is between 20 and 80 kHz.
    FIG. 1 shows an electrical converter circuit; in fig. 2 is a schematic view of a second transformer with several secondary rods, top view; in fig. 3 - the same side view.
    The converter consists of a transformer 1, which can be connected to a network of 50 or 60 Hz and to which a rectifier 2 is connected. Transformer 1 is ferroresonant, in which the primary voltage deviations result only in small secondary voltage deviations. The smoothed output voltage of the direct current of the rectifier 2 is transmitted to the circuits of the inverter 3, which generates an alternating current voltage with a frequency of 20–80 kHz, for example 50 kHz. This alternating current voltage is transmitted to the primary winding 4 of the transformer 5, which is provided with several secondary windings 6, 6, 6, each secondary winding 6 being connected to a rectifying, smoothing and stabilizing circuit 7, 7 and 1.
    FIG. Figures 2 and 3 show in detail how windings 4 and 6 and circuit 7 are connected together. The ferromagnetic core of the transformer 5 has the shape of a rectangle and consists of two C-shaped parts 8 and 9, which are identical and facing each other with the ends 10 and 11.
    The primary winding of the transformer 5 is placed on one composite core of the core, and on the other is the required number of secondary windings 6. Each winding 6 is in the form of a flat coil placed on the board 12, on which is also placed the circuit 7.
    Circuit 7 consists of rectifier 13 (for example, a Gretz circuit consisting of four diodes for double rectification), a capacitor 14, a resistor 15, a capacitor 16, a voltage regulator 17 and a capacitor 18. The resistor 15 has the function of current limiting and also Part of a smoothing filter consisting of capacitors 14, 16 and 18.
    This converter can be used as one or more safe energy sources, for example, for supplying electrical and control equipment with energy, stirring the environment, as it is not capable of generating high temperatures sufficient for an explosion, or a spark, and. it has enough energy to cause an explosion, since it has the following specific advantages: complete isolation, including the ground,
    has a circuit that can be short-circuited without damaging any component, has a low capacitive coupling between the earth network and equipment supplied with energy by the transforming circuit and a low capacitive coupling between the transformer leads and the ground. In addition, the strong suppression of ordinary and differential interference interference that can occur in networks, the ability to be connected to a source of power supply to any randomly grounded circuit.
    The selected location allows you to select the optimal location for grounding, regardless of the connection to the ground and the simple supply of multiple sources of energy.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    AC to DC converter containing the first transformer, the primary winding of which is powered from an alternating current source of industrial frequency, a rectifier with a smoothing filter connected to the secondary winding of the first transformer, an inverter connected to a rectifier and generated alternating current with higher jJ frequency than the industrial one, and the second transformer with a ferromagnetic core, the primary winding of which is connected to the inverter, and having at least one secondary winding, to which is connected to a rectifier, characterized in that
    5 that, in order to increase reliability, the ferromagnetic core of the second transformer is made detachable from two C-shaped parts, on one composite rod of which the primary winding of the second transformer is placed, on the other secondary windings of the second transformer, and each of the secondary windings of the second transformer are made in as a flat printed spiral of not less than 20 turns, and is placed together with a straightener, which is made full-wave on a separate board, which is additionally equipped with parallel capacitors, a current-limiting resistor and a stabilizer, in this case, in the case of constant voltages from 12 to 24V at the output, the total circuit capacity of each board is between 0.1 and 2 μs, the resistance is between 100 and 500 Ohms, and the frequency at the output between 20 and 80 kHz.
    Sources of information taken into account in the examination 1. Application of the Netherlands JSTo 69166956, cl. H 02 M 3/32, 1971.
     6
    +
    +
    +
    77
    // 2
    g 6
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    US3107328A|1963-10-15|Saturable reactor dimmer
    同族专利:
    公开号 | 公开日
    IT1035154B|1979-10-20|
    FR2266966A1|1975-10-31|
    BE827423A|1975-10-01|
    FR2266966B1|1980-05-30|
    CH600665A5|1978-06-30|
    ATA252875A|1976-11-15|
    ES436235A1|1977-02-01|
    AT337831B|1977-07-25|
    DE2514331A1|1975-10-16|
    JPS50140826A|1975-11-12|
    GB1509563A|1978-05-04|
    US4024449A|1977-05-17|
    NL7404518A|1975-10-07|
    CA1031418A|1978-05-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3129398A|1961-01-13|1964-04-14|Thomson Houston Comp Francaise|Printed coil with removable core support and core|
    NL143757B|1964-08-11|1974-10-15|Philips Nv|DEVICE CONTAINS A VOLTAGE CONVERTER AND AN INPUT FILTER FOR THIS INVERTER|
    US3409805A|1965-08-12|1968-11-05|Foxboro Co|Printed-circuit board coupling circuit with d-c isolation|
    US3624449A|1970-08-24|1971-11-30|Sybron Corp|Intrinsically safe transmitter system|DE2712941C2|1977-03-24|1982-09-16|Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt|Circuit arrangement for generating the supply voltage for an electronic device|
    DE2806782C2|1978-02-17|1987-01-15|Brown, Boveri & Cie Ag, 6800 Mannheim, De|
    DE2950789C2|1979-12-17|1982-07-01|May & Christe Gmbh, Transformatorenwerke, 6370 Oberursel|Ballast for fluorescent lamps|
    DE3533319A1|1985-09-18|1987-03-26|Siemens Ag|Pulsed power supply unit without a transformer, for producing a regulated DC voltage|
    US4777575A|1986-03-25|1988-10-11|Hitachi Ltd.|Switching power supply|
    US7236086B1|1993-06-14|2007-06-26|Vlt, Inc.|Power converter configuration, control, and construction|
    CN1050242C|1993-06-14|2000-03-08|Vlt公司|Power converter configuration, control, and construction|
    GB2301489B|1995-05-26|2000-02-09|Coutant Lambda Limited|A power output module for a power supply unit|
    FR2752642B1|1996-08-20|1998-11-06|Thomson Csf|TRANSFORMER-RECTIFIER T.H.T. FOR SURFACE MOUNTING|
    EP0896419A3|1997-08-04|1999-06-02|Alcatel|Power converter incorporated in a magnetic circuit|
    GB2377823B|2001-06-15|2005-11-23|Marconi Applied Technologies|Transformer/rectifier arrangement|
    GB2409940B|2004-01-12|2006-05-10|Siemens Ag|A bidirectional power supply transformer|
    US7732367B2|2005-07-25|2010-06-08|Saudi Basic Industries Corporation|Catalyst for methacrolein oxidation and method for making and using same|
    EP2605355B1|2011-12-15|2016-08-03|Siemens Aktiengesellschaft|Intrinsically safe energy limiting circuit|
    US9343899B2|2013-10-03|2016-05-17|Fisher Controls International Llc|Intrinsically safe voltage limiting shunt regulator circuit|
    CN103973124B|2014-05-15|2017-01-18|广州市特种机电设备检测研究院|Method for designing intrinsic safety type quasi-resonance flyback converter|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL7404518A|NL7404518A|1974-04-03|1974-04-03|INTRINSICALLY SAFE POWER SOURCE.|
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