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Hello.
I am using a Synchronous Generator Model in Matlab which gives me Internal Stator Voltages (not the terminal voltages) in DQ0 form. However I would like to also view these in ABC form.
If I use the inverse Clark/Park DQ0 block to transformer back to abc, what do I use for the theta...
Well we are already pretty invested in Matlab/Simulink tools and Windows....but I have used PSCAD at my last job. (I've also been to your hometown Manitoba for some RTDS training a few Januarys back. Wow that was cold!)
I'm reading a book now called 'Multicore Simulation of Power System...
Ok I see.
Looking at possibly getting 1kHz sample rate in order to get true 60Hz simulation. Only have about 16 samples per cycle but should be enough. Worried about it getting unstable. Controls probably will still run at 200Hz timestep. Any experience here?
(How can I move this to a...
I am starting to think that maybe there is no clear systematic approach.....?
I spent a few hours trying to get the Synchronous Machine to match when changing from 60Hz to 6Hz but it is quite tricky.
I know in general that the impedance of an inductor should be 10x more and the impedance of a...
Yes exactly. 6Hz is good enough to develop an RMS that is OK for a User to see.
So for example regarding the Synchronous Machine. I am using the Model from SimPowerSystems-Simscape Technology. I have turned off any saturation effects.
It already has various parameters that I would like to use...
I can pick any time step I want in my simulator (using Matlab/Simulink/Simscape/SimpowerSystems).
However the limitation is regarding the Resources on the intended Real-Time target. I am not able to choose a fast FPGA or Embedded Processor solution like OPAL-RT or RTDS. Instead our target must...
I wanted to get the forums thoughts on Simulating a typical 60Hz Power System as 6Hz. 10 times less than the actual system frequency.
The motivation for this is to be able to simulate at only 0.005 time step (200Hz) and run real-time on a typical Computer.
At the 0.005 timestep there would...
I think i found now what I needed. Treez, i dont have any actual R's or C's so the problem is much simpler than that.
The form for 1st order Low Pass transfer function is:
1
----------
(1+s/wc)
with wc being the 'cutoff frequency' in radians per second
wc is the inverse of the time...
How do I design a 1st order filter with 2 second time constant?
1 / (s + ?)
Once i have it in continuous form I can convert using BiLinear and design the digital filter I need.
I am trying to build and eventually implement digitally a Filter with specific phase delay at a single frequency.
So for example at 60Hz the signal should be delayed 45 degrees, etc.
How would one approach this on paper, circuit and say Matlab?
Hi, When picking out a simple indicator LED for a circuit there are 2 main things to consider?
1. Using resistor to limit the current to appropriate level 10-20ma?
2. Making sure the Voltage Forward isn't any higher than the voltage of the circuit?
Example: I have a 1.8V Power Rail that I...
I see your point as a Battery. Its just a floating voltage, so Yes. Thanks.
Thanks for this suggestion. So I would need to pick out an IC Controller and build a inverting buck-boost? This would be non-isolated, but inverting? Wouldn't this take up more real-estate than a DC-DC brick? Isn't a...
Hi I am making a PCB that has power coming into the board as 12V and 5V.
However I also need a on-board -12V power rail for some OpAmps. If I use a 12Vto12V isolated DC-DC Brick, then connect it up backwards so that output 12V is ground and output GND is 12V, would this give me the -12V that I...
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