Prices of the electricity we use to charge
- Thread starter flecc
- Start date
Is there a way to see how much harmonic distortion there is on the mains short of a 220vac recording oscilloscope ?
Why are you interested in a small amount harmonics on AC supply? If a device needs DC supply, harmonics are removed by the ac-dc converter stage. Atherwise, the amount of harmonics generated by the appliance is usually more than the grid's but gets absorbed locally. Incidentally, that guy regurgitate irrelevant facts and fictions. Btw, datacentres have their own uninteruptible power supply circuits so feeding no harmonics back to the grid in any significant amount.
Yeah, my bike can now do 1000 miles on one charge too. Long live EVs!
Health alerts come into force ahead of second heatwave
www.bbc.co.uk
How weather and climate change are shaping the future of UK sport
www.metoffice.gov.uk
UK weather: Health alerts come into force ahead of second heatwave
The UK could see its hottest day of the year on Monday, as a likely heatwave coincides with Glastonbury and Wimbledon.
www.bbc.co.uk
How weather and climate change are shaping the future of UK sport
How weather and climate change are shaping the future of UK sport
As the UK experiences increasingly variable and extreme weather, the impact on sporting events is becoming more evident.
www.metoffice.gov.uk
They talk about some of these "straws" in this doc about the IEEE519-2014 standard.
"Effects of Harmonics
Harmonics don’t only influence the signal shapes, but operation and the life span of electrical devices and equipment. Harmonic frequencies in motors and generators can result a various mechanical phenomena that all lead to efficiency reduction. Among these are higher audible noise, faster ageing of the shaft, insulation and mechanical parts. Furthermore pulsating or reduced torque as well as increased heat development."
Chapter 3 - Harmonics & IEEE 519 - Power Quality Explained
Harmonics & IEEE 519 explained - definitions, causes and classification of Harmonics + how to measure - explained from our point of view.
www.neo-messtechnik.com
Wiki quotes IE61000-4-7 as *the* standard on Harmonics and their eddy current / hysteresis heating losses in motor cores, shortening their life.
But it's a bit over my pay grade..
They are cars bought for special projects which have changed or cancelled, so they are surpluses. You have auctions like that in China but they don't have much if any effect on growth of EV sales across the world.Might take a chance for the Scrap price?
Demand for oil seems to have peaked.
As I said, the guy regurgitate irrelevant facts ans fictions. If he did the calculations instead, he would have seen that UPS that datacentres use takes out harmonics from the grid instead of add to.They talk about some of these "straws" in this doc about the IEEE519-2014 standard.
"Effects of Harmonics
Harmonics don’t only influence the signal shapes, but operation and the life span of electrical devices and equipment. Harmonic frequencies in motors and generators can result a various mechanical phenomena that all lead to efficiency reduction. Among these are higher audible noise, faster ageing of the shaft, insulation and mechanical parts. Furthermore pulsating or reduced torque as well as increased heat development."
Chapter 3 - Harmonics & IEEE 519 - Power Quality Explained
Harmonics & IEEE 519 explained - definitions, causes and classification of Harmonics + how to measure - explained from our point of view.
Wiki quotes IE61000-4-7 as *the* standard on Harmonics and their eddy current / hysteresis heating losses in motor cores, shortening their life.
But it's a bit over my pay grade..
Datacentres have to comply with IEEE519 and EU EN610000-3-2 for their permit. Their servers have APFC (active power factor correction). You worry about nothing really.
Southern Europe swelters as heatwave spreads
www.bbc.co.uk
How climate change could start the next financial crisis
The climate shocks that could trigger wider market turmoil
Southern Europe swelters as heatwave spreads
Spain, Italy and France are among the countries issuing warnings to protect health and stop wildfires.
www.bbc.co.uk
How climate change could start the next financial crisis
The climate shocks that could trigger wider market turmoil
It blacked out Spain, Portugal, and more..
How is that "worry about nothing"?
Did you forget? Here's a reminder
So "green", so "sustainable", so "sunk cost"!
They are going to clean up this pollution out of the ocean, yes?
Cobalt Tuna in lithium salts anyone?
They are going to clean up this pollution out of the ocean, yes?
Cobalt Tuna in lithium salts anyone?
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