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EV experience so far

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GlueGuy View Drop Down
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Post Options Post Options   Quote GlueGuy Quote  Post ReplyReply Direct Link To This Post Topic: EV experience so far
    Posted: 19 Feb 2023 at 10:46am
As it happens, very long transmission lines are slowly switching over to DC instead of AC. It requires long distance, and super high voltages; as in millions of volts. This has recently become more practical because of extremely large and high capacity valves (AKA diodes). Transmitting DC would mean no buzzing.
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Post Options Post Options   Quote lostagain Quote  Post ReplyReply Direct Link To This Post Posted: 18 Feb 2023 at 3:06pm
Constant buzzing sounds drive me crazy. Wacko
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Post Options Post Options   Quote GlueGuy Quote  Post ReplyReply Direct Link To This Post Posted: 18 Feb 2023 at 11:05am
Originally posted by David and Danette

 I wonder how the popularity of EV's will effect gasoline prices in the future. I would think if there is less of a demand for gasoline the price for gasoline would come down. I am surprised how quickly EV's are becoming popular for those who can afford them. Someone I know who works in a Nissan engine factory and he said he is surprised, it's a lttle surprising to comprehend. And I thought I have read high voltage power lines may affect ones health who lives near them I don't know if there is any truth to that. But what if they discover a health risk to sitting in a vehicle near a high voltage battery. Confused
I've been thinking about that as well.

I think in the relatively short term, as the demand for gasoline goes down, the price for it will go down as well. That means that it could dampen the demand for EVs. So it will be an interesting dynamic for sure.

Personally, I think that the fear about the magnetism over high voltage lines is overhyped. I will say that the buzzing sound is pretty annoying. I wouldn't want to live near them for that and the appearance. The other issue is the hazard of when/if the lines come down in a major weather event.
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Post Options Post Options   Quote David and Danette Quote  Post ReplyReply Direct Link To This Post Posted: 17 Feb 2023 at 12:57pm
 I wonder how the popularity of EV's will effect gasoline prices in the future. I would think if there is less of a demand for gasoline the price for gasoline would come down. I am surprised how quickly EV's are becoming popular for those who can afford them. Someone I know who works in a Nissan engine factory and he said he is surprised, it's a lttle surprising to comprehend. And I thought I have read high voltage power lines may affect ones health who lives near them I don't know if there is any truth to that. But what if they discover a health risk to sitting in a vehicle near a high voltage battery. Confused
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Post Options Post Options   Quote lostagain Quote  Post ReplyReply Direct Link To This Post Posted: 13 Feb 2023 at 2:02pm
StephenH, I share your concerns.  There is a YouTube program that delves into those issues called Just Have a Think.  It is not sponsored by any companies, but instead through its viewers.  The presenter, Dave Borlace, is not technical person himself, but does a very good job explaining stuff so a lay person can make sense of it.  He's done segments on the concerns you expressed about things such as recycling lithium batteries, decommissioning wind turbines, and much more.  Here's the link to the videos in general: https://www.youtube.com/@JustHaveaThink/videos
Hope you find it useful.
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Post Options Post Options   Quote StephenH Quote  Post ReplyReply Direct Link To This Post Posted: 13 Feb 2023 at 10:44am
One BIG question with all of this "green" energy is what is going to be needed to decommission things like wind turbines, solar panels, lithium batteries, etc. when they reach the end of their useful life. On top of that, what will the cost of dealing with the environmental challenges that stem from mining Lithium, Cobalt, and other rare earth minerals needed to make these technologies possible? Given the "There Ain't No Such Thing As A Free Lunch" (TANSTAAFL) rule (Robert Heinlein), I expect that will not be insignificant.
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Post Options Post Options   Quote gpokluda Quote  Post ReplyReply Direct Link To This Post Posted: 12 Feb 2023 at 5:25pm
Originally posted by offgrid

...So I smile when I put in my Bolt because thats a teeny bit less money and power I'm sending to these clowns. In the meantime the entire global lithium battery industry (revenue, not profit) was worth about 50 billion last year, or about 1% of Big Oil's profits (not revenue). Doesn't even move the needle yet, but that doesn't stop the oil and gas spending tens of millions trying to make us thinks its a problem. 

Life is full of contradictions and a person can drive them self insane trying to balance all of the causes out there and assign significance to their lives. Truth be told, none of us have it all figured out and never will. The best we can hope for is to be good human beings to each other and do what we think is right for our community.
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Post Options Post Options   Quote hogone Quote  Post ReplyReply Direct Link To This Post Posted: 12 Feb 2023 at 1:55pm
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Post Options Post Options   Quote GlueGuy Quote  Post ReplyReply Direct Link To This Post Posted: 12 Feb 2023 at 1:08pm
Originally posted by offgrid

The Prius has had regen braking since it was introduced in 1997. Its just weak compared to a pure EV because the electric motor in a hybrid is pretty small.  I think the GM EV1 had it in 1996. 

As far as I can tell the Tesla uses a good old 3 phase induction motor, patented by Nicola Tesla in 1887. The Prius actually has two motors, both are 3 phase, but they have permanent magnet rotors so they're not induction motors. The Bolt also has a PM rotor, not sure if its 3 phase or not but probably. 
 I think the main difference between PMAC and AC induction motors is that the induction motor has to be rotating in order to create a magnetic field in the rotor while the PM motor doesn't. So its a little more efficient and high rpm while the PMAC motor is a bit better at low rpm.  Probably the driver wouldn't notice any difference.

That's not what Martin explained to me. Their motor does use permanent magnets and it's an induction motor.
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Post Options Post Options   Quote offgrid Quote  Post ReplyReply Direct Link To This Post Posted: 12 Feb 2023 at 6:46am
Leaving CO2 emissions aside, here's my other motivation for going electric. 

The oil and gas companies' net income more than doubled in 2022  to over $4 trilion (with a t). And thats after a record year in 2021. This includes not only companies like Exxon, Chevron, Shell, and BP who are household names in the US but also the nice folks at Saudi Aramco (the largest by far), PetroChina, and Gazprom in Russia. Its all profit, it doesn't cost these guys any more to pump their black stuff out of the ground than it did a year ago.   Its a global not a US issue. 

Why such ridiculous wealth flowing to these guys, while so many folks with limited income struggle to buy enough gas just to get to their jobs? In Europe they are imposing windfall profit taxes to try to address some of this imbalance, but these guys have armies of accountants and tax attorneys expert at showing  the profits in whatever jurisdiction is the most favorable.  

So I smile when I put in my Bolt because thats a teeny bit less money and power I'm sending to these clowns. In the meantime the entire global lithium battery industry (revenue, not profit) was worth about 50 billion last year, or about 1% of Big Oil's profits (not revenue). Doesn't even move the needle yet, but that doesn't stop the oil and gas spending tens of millions trying to make us thinks its a problem. 

I have a simple approach I use to try to sift through all the nonsense. Its not always right but its a good starting point. If a PR firm is saying it, they're lying. If there are two PR firms saying  opposite things then they're both lying, but the bigger liar is the one getting the most funding because you have to repeat the bigger lie louder and more often to get people to believe it. Just ask the all time master of PR, Joseph Goebbels, if you can raise him from the dead. Come to think of it, lets not.....
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