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A KW Switch Mode Regulated High Voltage Power Supply

Konusu 'Smps Devreleri Ve Uygulamaları' forumundadır ve guclusat tarafından 14 Ağustos 2011 başlatılmıştır.

  1. guclusat
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    guclusat Tanınmış Üye Süper Moderatör

    Katılım:
    14 Haziran 2009
    Mesajlar:
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    Ödül Puanları:
    48
    [SIZE=+4]SAFETY WARNING!![/SIZE]
    [SIZE=+1]This unit handles voltages and currents that can be INSTANTLY LETHAL upon contact. Both the input and output ends of the unit are dangerous, as they both contain high voltages and are capable of high currents.[/SIZE]
    [SIZE=+1]IF YOU DO NOT HAVE EXPERIENCE IN WORKING WITH HIGH VOLTAGES, THEN DO NOT ATTEMPT TO CONSTRUCT THIS POWER SUPPLY WITHOUT THE GUIDANCE OF A PROPERLY QUALIFIED INSTRUCTOR.[/SIZE]
    [SIZE=+3]DEATH IS PERMANENT[/SIZE]
    [SIZE=+1]PLEASE BE CAREFUL!![/SIZE]
    [HR][/HR] [SIZE=+1]The data sheets listed below are all in Adobe PDF format.[/SIZE]
    I suggest that you download these files for reference while reading the circuit description.
    [SIZE=+1]Click HERE for the schematic diagram of the 120 Volt unit.[/SIZE]
    [SIZE=+1]Click HERE for the parts list for the 120 Volt unit.[/SIZE]
    [SIZE=+1]Click HERE for the schematic diagram of the 240 Volt unit.[/SIZE]
    [SIZE=+1]Click HERE for the parts list for the 240 Volt unit. [/SIZE]
    [SIZE=+1]Click HERE for the data sheet on the TL494 switching controller IC. [/SIZE]
    [SIZE=+1]Click HERE for the data sheet on the TL594 Switching controller IC.[/SIZE]
    Note: the ON Semiconductor version of the TL594 is a higher powered version of the more common TL494 and is a better choice for this circuit because it will provides higher IGBT drive capability. It also has a low voltage lockout circuit, which is not required for this power supply. The output transistors in the TL594 are rated at 500 ma, whereas the TL494 is rated at only 200 ma. However, the TL594 that is manufactured by Texas Instruments has the same current ratings as the standard TL494, and therefore has no particular advantage over the TL494. If you do use a TL594 in place of the TL494, it may be used with no circuit changes required.
    [SIZE=+1]Click HERE for the data sheet for the HGTG27N120BN power transistor. [/SIZE]
    [SIZE=+1]Click HERE for the data sheet on the UF4007 diode. [/SIZE]
    [SIZE=+1]Click HERE for the data sheet on the Ferroxcube "U" transformer core. [/SIZE]
    [SIZE=+1]Click HERE for the data sheet on the Ferroxcube "I" transformer core. [/SIZE]
    [HR][/HR] The following files are useful as reference material if you want to design your own switching power supply:
    [SIZE=+1]Click HERE for "Topologies for Switched Mode Power Supplies"[/SIZE]
    [SIZE=+1]Click HERE for "ON Semiconductor SMPS Power Supply Design Manual"[/SIZE]
    [SIZE=+1]Click [SIZE=+1]HERE[/SIZE] for the "Fuji IGBT Application Manual REH984[/SIZE]"
    [SIZE=+1]Click HERE for "Design of Magnetic Components"[/SIZE]
    [SIZE=+1]Click HERE for "Inverter Transformer Design and Core Selection"[/SIZE]
    [SIZE=+1]Click HERE for "Reactive Elements in Switched Power Conversion"[/SIZE]
    [SIZE=+1]Click HERE for "Wakefield Heatsink Thermal Tutorial" [/SIZE]
    The following files were added on June 8, 2005
    [SIZE=+1]Click HERE for "Choose Wisely" IGBT or MOSFET selector" [/SIZE]
    [SIZE=+1]Click HERE for "IGBT Basics" by Motorola [/SIZE]
    [SIZE=+1]Click HERE for "IGBT Basics by Fairchild [/SIZE]
    [SIZE=+1]Click HERE for "Introduction to IGBT Operation" [/SIZE]
    [SIZE=+1]Click HERE for "IGBT Gate Drive for Maximum Efficiency" [/SIZE]
    [SIZE=+1]Click HERE for "AC Power Drive Topology" (Up to 8 MW!)" [/SIZE]
    [SIZE=+1]Click HERE for "Stranded Wire as a Substitute for Litz Wire in Transformers" [/SIZE]
    NOTICE: Copyright on the above listed Data Sheets and Application Manuals remain with the original copyright holder. No claim to any portion of said copyright is made or inferred by the operator of this Web Site.
    [HR][/HR] The following files are in MPG format. They show the power supply 3 second startup cycle.
    [SIZE=+1]Click HERE for a wide view video of the startup showing the lamp load[/SIZE]
    [SIZE=+1]Click HERE for a video of the voltage and current meters during startup[/SIZE]
    [SIZE=+1]Click HERE for a video of the PWM waveform during startup [/SIZE]
     
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