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Recent content by FreeRiderCz

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    Voltage single phase active front end rectifier - simulation problem

    If i understand you right well i thought that V1 and V2 should be ON and OFF at same time, and in opposite V44 and V3 should be ON and OFF at same time but inverted in compare of V1-V2, as the proper function of AFE rectifier. I read in theory i used that IGBT is best for AFE rectifiers thx to...
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    Voltage single phase active front end rectifier - simulation problem

    Hello, thanks for the reply, i just want to ask about IGBT - you said i should try it without them only with diods, im not sure what means "Try maybe with only diodes first and IGBTs in the low side only." Also i thought that theta =omega*t=2*3,14*50*0,002 thus its 6,28 (i take 2pif so...
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    Voltage single phase active front end rectifier - simulation problem

    I did what you suggest - make node for output on E3 and E3 (they was similar and got same problem) and it helps i can "run" simulation now, now i just cant get results duo to convergence problems :-D - - - Updated - - - I did what you suggest - make node for output on E3 and E2 (they was...
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    Voltage single phase active front end rectifier - simulation problem

    well i get rid of some errors (obviously if i use hirearchical blocks i cant use PI regulator as name with "space" between PI and regulator) but now is there only problem in hirearchical block of PWM - nodes are floating.... here is curent version of my schematic Moderator action: removed link...
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    Voltage single phase active front end rectifier - simulation problem

    Well only one node didnt help, still getting same error ....
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    Active front end rectifier - single phase, current

    Wchich libraries do you mean exactly?
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    Voltage single phase active front end rectifier - simulation problem

    I understand, i try to avoid inductor, about that ground icon, i use one at input and i thought its enough, should i add ground also on output side and to regulatory part? Could you suggest any N-mosfet instead parts i was using? thank you wery much edit: i actually got 2 grounds 1 on input...
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    Voltage single phase active front end rectifier - simulation problem

    Oh so its the (theta = ω*t = 2*pi*50*t) omega *t of time base of that input voltage, am i right?
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    Voltage single phase active front end rectifier - simulation problem

    Oh i know what you mean, i just think that theta (phase shift of voltage and current on input) is still 30 or 60 angle or 90 im not sure now (thats why i used constat for theta), also i didnt know how to get continuous measuring of that phase shift (theta), i was solving how to get "probe" to...
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    Voltage single phase active front end rectifier - simulation problem

    Well i followed mathematical desrcibe when i make this regulation schematics, if by sin generation you mean this SIN block then i have it there: i followed this mathematic explanation for epsilon regulation: https://drive.google.com/file/d/1iZlgO7sVXG4VazvnvSmmwGzvQ2nlHobF/view?usp=sharing
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    Voltage single phase active front end rectifier - simulation problem

    I didnt have simulation schematics - i just simply try to simulate this scheme in post #1 just as it is (dunno if thats the correct attitude ? ) but i didnt find anwhere on internet someone simulating AFE controlers in OrCad.
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    Voltage single phase active front end rectifier - simulation problem

    Thanks for a reply BradtheRad, i was trying to simulate single wave and 2 wave rectifiers and they were working, active front end rectifiers can be bidirectional but this scheme is focused only in one way to get higher voltage on the output than on the input To your last 2 points, my...
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    Voltage single phase active front end rectifier - simulation problem

    Well i hope somebody will see this and gime some pointers:-)
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    Voltage single phase active front end rectifier - simulation problem

    Samo topology but different type of regulation. I´m just looking for a help thats all.
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    Voltage single phase active front end rectifier - simulation problem

    Hello, im trying to run this schematic : with this regulation: In OrCad 16.6 , i used PI regulator and PWM, but my simulation is making errors... and im unable to solve them. Can anyone pinpoint what am i doing wrong here? I ´m kinda self learning about these and i try to run some...

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