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Rev 3.0.4 February 2006 Single-phase distortion, Power triangles, vector-based phase shift during voltage sags, waveforms with phase-sequence vectors, additional translations, and more...
- Includes English and these languages:
- Traducción español de Francisco Patxi PAZOS
- Traduction française par Georges SIMARD
- Deutsche Übersetzung von Stefan FASSBINDER
- Traducere în româna de Mircea CHINDRIS
- Tradução Português por Bianco SANTANA and Paulo F. RIBEIRO
- Polski T³umaczenie Roman TARGOSZ
- Traduzione italiana a cura di Antonio BRACALE e Daniela PROTO
- Svensk översättning av Mats / Gustav HÄGER
- I am grateful for the kind translations. All errors in the program are my responsibility. - Alex McEachern
- Trouble with downloading or installing?
It may be your system's security settings. Some networks do not permit you to download an executable file (.exe).
I will happily send you a CD-ROM of this program by post. Just send me your post address at Alex@PowerStandards.com.
Tested on Windows 95, Windows 98, and Windows XP. (For hints on Windows 2000, see below.)
- Making copies for students, colleagues
FREE copying. There are absolutely no restrictions on copying and distributing this program.
Please feel free to make as many copies as you like, give copies away, post a copy of the installation program on your web site, etc.
- Starting the program after installation
The program will not start automatically. After installation, look in your "Start" menu, in a folder called "Alex McEachern".
New in Revision 3.0.3 - Vector-based sag/dip adjustments
New in Revision 3.0.3 - Power triangles - try grabbing the vertex and moving it!
New in Revision 3.0.3 - Languages
More - typical screens in the Power Quality Teaching Toy
I use this program to help teach my power quality seminars - the engineers often get an intuitive feel for the power quality concepts, just by playing with the controls and seeing what happens.
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Have fun!
Alex McEachern
Alex@PowerStandards.com
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Technical note: We have tested this program on U.S. editions of Windows 95, Windows 98, and Windows XP.
It will probably work on any other version of Windows. The program is set up for an 1024x768 display, because that's what is available almost anywhere
world-wide on video projectors. Again, the program is FREE, so NO SUPPORT is available...
Windows 2000 Technical update: Marc Dekenah (here is his web site) points out that there may be installation
problems with Windows 2000. My guess is that if there are problems with Windows 2000, there will also be problems with Windows NT. Sorry! This program was
developed and packaged entirely with Microsoft tools, so what we're dealing with here is Microsoft encouraging you to upgrade to the latest version of Windows.
Possible work-around for Windows 2000: Here's what Marc tried, and it worked for him: Marc writes: "I did a 'non install' installation. I opened
up the install executable with WinZip. I then extracted 'PQTTIndex.CAB'. I then opened this file with WinZip and simply placed all the files in one directory within
Win2K (I put them in the "Program Files" folder under a folder called "PQtoy") and then simply called the program "PQTTIndex.exe" via a
shortcut placed on the desktop - success - and 10 more people were introduced to your program! I have not had time to experiment with trying to install from
the 'PQTTIndex.CAB' unzipped files (as there is a setup.exe in there), but all I needed was a quick fix. When I get another Win2K machine in my paws, I'll give it a try." (Thanks, Marc!)
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Fundamental power flow
On-screen knobs for dialing in current, voltage, and phase angle - interact in real time with instantaneous volts, amps, power, power triangle with VA, W, VAR, PF, and more.
Drag the waveform cursor left and right to demonstrate that the power waveform is simply the instantaneous voltage waveform multiplied by the instantaneous current waveform.
Try dragging around the vertex of the power triangle, just to see what happens.
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Sags and dips
Play with voltage sags, and see in real-time how your sag affects single-phase and three-phase supplies. Knobs for adjusting power supply parameters, load,
source impedance. Real-time display of volts, amps, unregulated voltage, regulated DC. NEW - grab the ends of vectors during voltage sags, and slide them around...
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Symmetrical components
An animated, interactive way to understand unbalanced three-phase systems, and how positive-sequence and negative-sequence vectors work. Knobs for adjusting amplitude and angle of
+, -, and 0 sequence vectors. Real-time effects of vectors, and vector sums. Corresponding sine waves shown, too.
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Harmonics primer
An intuitive harmonics simulator - just adjust the amplitude and phase angle knobs for each harmonic, and immediately see the effect on the waveform.
The sliding cursor makes it very clear what we mean when we say "add up the sine waves".
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Voltage distortion, impedance, and harmonic currents
Knobs let you adjust resistive and inductive impedance. See how distorted currents affect the voltage waveform. Includes resonance, with
knobs to adjust resonant frequency and Q.
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Harmonic power flow
A crystal clear graphic explanation of why harmonic currents increase volt-amps, without increasing power transfer.
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Harmonic sequences
Intuitive, graphical explanation of harmonic sequencing for balanced 3-phase systems.
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Flicker
Knbos let you control the frequency and amplitude of flicker on your PC display screen. Check out the difference betwen looking at the screen directly, and watching it with you peripheral vision.
Are you more sensitive to a particular flicker frequency?
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