|
|
|
|
| Author |
|
|
Registered
|
Tesla cars run on D/C!
The Tesla cars are powered by D/C batteries that get inverted to run the A/C motor. Edison was the D/C guy, and Tesla was the A/C guy. So shouldn't it be called an Edison Tesla?
|
||
11-13-2019, 10:25 AM
|
|
|
Back in the saddle again
Join Date: Oct 2001
Location: Central TX west of Houston
Posts: 56,119
|
Doh!
__________________
Steve '08 Boxster RS60 Spyder #0099/1960 - never named a car before, but this is Charlotte. '88 targa  SOLD 2004 - gone but not forgotten
|
||
|
11-13-2019, 10:53 AM
|
|
|
Too big to fail
|
I've never seen an a/c battery
__________________
"You go to the track with the Porsche you have, not the Porsche you wish you had." '03 E46 M3 '57 356A Various VWs |
||
|
11-13-2019, 11:39 AM
|
|
|
Get off my lawn!
|
Batteries ALL produce DC power. All of them. All they do is store the electricity.
Most cars are called gasoline powered, but there is way more oxygen burned than gasoline or diesel fuel. About 14 time more air than gasoline.
__________________
Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
||
|
11-13-2019, 11:41 AM
|
|
|
Cars & Coffee Killer
Join Date: Sep 2004
Location: State of Failure
Posts: 32,246
|
I'm surprised they use AC motors.
It was my understanding that DC motors are better for applications where you need to vary the speed, and AC motors are more efficient at running at a single speed for long periods.
__________________
Some Porsches long ago...then a wankle... 5 liters of VVT fury now -Chris "There is freedom in risk, just as there is oppression in security." |
||
|
11-13-2019, 11:42 AM
|
|
|
Too big to fail
|
Quote:
__________________
"You go to the track with the Porsche you have, not the Porsche you wish you had." '03 E46 M3 '57 356A Various VWs |
||
|
11-13-2019, 11:46 AM
|
|
|
|
(the shotguns)
Join Date: Feb 2006
Location: Maryland
Posts: 21,672
|
actually in many cases they are coal powered.
but hey, let's keep pretending.
__________________
***************************************** Well i had #6 adjusted perfectly but then just before i tightened it a butterfly in Zimbabwe farted and now i have to start all over again! I believe we all make mistakes but I will not validate your poor choices and/or perversions and subsidize the results your actions. |
||
|
11-13-2019, 11:53 AM
|
|
|
Registered
Join Date: Jun 2008
Location: SE Pa.
Posts: 1,222
|
Modern inverters /VFD's do a fine job of speed control and can be more efficient than DC - even with the conversion from the AC batteries.
I'm a mechanical guy but these modern A/C motors can be nothing short of miraculous - Marathon Black series provide full torque from 0 RPM.
__________________
1981 911 SC 2013 Mini Cooper JCW 2017 GMC K1500 |
||
|
11-13-2019, 11:57 AM
|
|
|
Registered
Join Date: Nov 2000
Location: AZ
Posts: 8,414
|
Quote:
The "engine" is AC and the "fuel" is initially provided via AC, then converted to DC to charge the batteries. If they used DC motors, then the Tesla moniker might be a head-scratcher. Makes you think about the actual "greenness" of an EV though. First you produce the energy (primarily via coal/oil/gas). Then you transfer that energy via long transmission lines to a charging station. Then you convert that energy to DC to charge a bank of DC Li-Ion batteries. Then you convert (most) of that DC energy to AC to power the motor. All of that with the many losses and inefficiencies of transferring/converting/inverting electrical energy along the way. Not to mention you are starting from a point of far, far less energy-density than gasoline to begin with. Oh, and your "gas tank" is perpetually "leaking" (self discharge), and is continually shrinking in size (capacity loss). |
||
|
11-13-2019, 12:17 PM
|
|
|
Cars & Coffee Killer
Join Date: Sep 2004
Location: State of Failure
Posts: 32,246
|
Could we call it a Westinghouse? Is that name taken?
__________________
Some Porsches long ago...then a wankle... 5 liters of VVT fury now -Chris "There is freedom in risk, just as there is oppression in security." |
||
|
11-13-2019, 12:21 PM
|
|
|
Too big to fail
|
Quote:
__________________
"You go to the track with the Porsche you have, not the Porsche you wish you had." '03 E46 M3 '57 356A Various VWs |
||
|
11-13-2019, 01:02 PM
|
|
|
AutoBahned
|
Quote:
Nuclear and natural gas-fired power plants supply about 66% of Maryland's electricity net generation; 27% overall for the US https://www.eia.gov/state/analysis.php?sid=MD https://www.eia.gov/energyexplained/electricity/electricity-in-the-us.php Last edited by RWebb; 11-13-2019 at 01:23 PM.. |
||
|
11-13-2019, 01:07 PM
|
|
|
|
Registered
Join Date: Nov 2000
Location: AZ
Posts: 8,414
|
Quote:
Theft of a Tesla = 1st degree Grand Edisonry. 
|
||
|
11-13-2019, 01:12 PM
|
|
|
(the shotguns)
Join Date: Feb 2006
Location: Maryland
Posts: 21,672
|
Quote:
__________________
***************************************** Well i had #6 adjusted perfectly but then just before i tightened it a butterfly in Zimbabwe farted and now i have to start all over again! I believe we all make mistakes but I will not validate your poor choices and/or perversions and subsidize the results your actions. |
||
|
11-13-2019, 03:42 PM
|
|
|
Dept store Quartermaster
Join Date: Jul 2001
Location: I'm right here Tati
Posts: 19,858
|
I believe A/C motors (seven wire) provide significantly greater flexibility than DC but I'm definitely out of my depth.
__________________
Cornpoppin' Pony Soldier |
||
|
11-13-2019, 04:12 PM
|
|
|
AutoBahned
|
Quote:
EIA should be able to tell you what state or county has highest % of coal - but that isn't the issue saw your MD address so included that too things have changed fast w/coal |
||
|
11-13-2019, 07:21 PM
|
|
|
Unregistered
Join Date: Aug 2000
Location: a wretched hive of scum and villainy
Posts: 55,652
|
|
||
|
11-14-2019, 07:43 AM
|
|
I
Carrera
