Recent content by GregoryGr

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    Experienced with PQ Control and PI Tuning for Inverter Power Control?

    Thank you, I will check this out. What you are suggesting I am currently experimenting with (and even though I haven't managed to work it out, it seems to be responding in the right direction! ). Truth be told, current control without classic hysterysis or bandwidth control seems strange to me...
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    Experienced with PQ Control and PI Tuning for Inverter Power Control?

    Hm, I haven't really modeled the grid, it's a fixated 3ph sine source with 400 polar voltage/50Hz and an inductance. What did you have in mind for the grid? The approach was to orient the grid voltage so Vq = 0 as to use Iq and Id for decoupled power control (sensors are placed in the PCC). So...
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    Experienced with PQ Control and PI Tuning for Inverter Power Control?

    Does anyone have experience modeling active/reactive management in an inverter? I'm working on it for a project, more precisely I'm trying to implement that PQ control with references of voltage, as is seen in this image: Problem is I've tried many PI regulators, and my I_dq doesn't want to...
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    Broken Multimeter: Get New or Fix with Soldering?

    So here's the update: I went to an electronics store with my multimeter and spare fuses, the guy working there was kind enough to solder it for free so I bought some 555 IC and capacitors from him. The multimeter works like a charm! :D But I'm considering getting a soldering iron myself, I...
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    Broken Multimeter: Get New or Fix with Soldering?

    Thanks for the help. I'll update you tomorrow. Unfortunately there isn't enough space for such fixes, it's a "portable" multimeter...
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    Broken Multimeter: Get New or Fix with Soldering?

    Well I can't find someone who has a soldiering gun so I guess I'll take it to an electronics store and see if they'll repair it...
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    Broken Multimeter: Get New or Fix with Soldering?

    Here you go
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    Broken Multimeter: Get New or Fix with Soldering?

    No that was actually very easy. Got a pack of 10 for 1 euro in an electronics store. The problem is I have no gun so if it's expensive I'll probably buy a new multi...
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    Broken Multimeter: Get New or Fix with Soldering?

    So if I got a gun I could melt the sides and stick another fuse there?
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    Broken Multimeter: Get New or Fix with Soldering?

    Since it's my first time playing around with a multimeter, i finally short-circuited it, tried to measure a current incorrectly, so now my fuse is burnt... The problem is, the fuse is soldered on my multimeter. What should I do, get another multimeter or get a soldering gun and try to fix it...
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    Building a Circuit: GND Grounding

    nope, sorry... But I think it's this one: http://cpc.farnell.com/1/1/11782-breadboard-round-hole-840-points-bx-4112n-pros-kit.html
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    Building a Circuit: GND Grounding

    Here's the breadboard...
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    Building a Circuit: GND Grounding

    Homework Statement Basically construct the circuit on a breadboard and take some measurements: http://ithaki.eng.auth.gr/aetos/elab/image.php?x=44 Homework Equations - The Attempt at a Solution - My only question is how am I supposed to do the GND grounding that it wants? o.O
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    LaTeX Finding a Latex Editor to Type Greek Characters

    Yes, I found out that you need to put these in \usepackage[english,greek]{babel} \usepackage[iso-8859-7]{inputenc} But it still doesn't work...
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    LaTeX Finding a Latex Editor to Type Greek Characters

    I am using ubuntu, and downloaded "Gummi" latex editor to make latex papers. However, even though it is nice and easy to use, I need it to show Greek characters as well. And I'm not talking about the latex symbols like \lambda , but I need to be able to write sentences in Greek but unfortunately...