General > General Technical Chat
Can anything be done about AC load "ripple"?
EPAIII:
"Clock Time" What are you, a politician who answers a question without giving any real facts?
So, the X axis numbers are HOURS and MINUTES?????
That would seem to say the "spikes" we see are changes over time periods of somewhere between 5 and 30 seconds.
OK, another question: At what rate, IN SECONDS, is this data being sampled?
If the sample rate is also in the order of a few seconds to perhaps 30 seconds, then those jumps are only changes in the load over that time period and they mean ABSOLUTELY NOTHING in terms of noise.
It is important to understand what we are actually looking at.
--- Quote from: paulca on July 06, 2023, 10:49:09 am ---The X axis is "clock time".
Y axis is Watts and VA
--- End quote ---
EPAIII:
That's what I am expecting. Except I would say you don't understand what your graph actually means.
--- Quote from: nctnico on July 08, 2023, 11:26:59 am ---
--- Quote from: paulca on July 06, 2023, 10:54:26 am ---Interestingly, if I look at the voltage chart, it does not have that noise. it's 230V, 50Hz stable. it droops and spikes with high load changes, but it doesn't have the noise.
This makes sense as it's load driven noise, the power requirements are altering, probably constantly, the graph resolution is only 0.2Hz tops.
So if voltage is stable and the VA is bouncing it means the current is bouncing.
--- End quote ---
Did you ever consider the load isn't constant? Just look at your process monitor on your computer. You'll see it jumping around which translates to more or less power consumption. There is nothing wrong with your setup. The problem is you not really understanding how electricity works :box:
--- End quote ---
EPAIII:
Resonant circuit stores AC. YES! Beat me to it.
But that is not what is needed here. What is needed is an actual understanding of what his graph means.
--- Quote from: jmelson on July 10, 2023, 01:45:21 am ---
--- Quote from: paulca on July 06, 2023, 10:54:26 am ---I need an AC capacitor and I know they don't exist. How do you store alternating current? With an alternator, aka a flywheel. I don't think a ton block axle and some AC induction motors/generators is worth it though LOL
--- End quote ---
Well, a great big inductor in series with a big capacitor will store energy at its resonant frequency.
Jon
--- End quote ---
AVGresponding:
--- Quote from: jmelson on July 10, 2023, 01:45:21 am ---
--- Quote from: paulca on July 06, 2023, 10:54:26 am ---I need an AC capacitor and I know they don't exist. How do you store alternating current? With an alternator, aka a flywheel. I don't think a ton block axle and some AC induction motors/generators is worth it though LOL
--- End quote ---
Well, a great big inductor in series with a big capacitor will store energy at its resonant frequency.
Jon
--- End quote ---
Indeed, this is how ferro-resonant transformers work.
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