Wiki Superchargers Visited

[Tdreamer]

@tt.

welcome to my hood! How was your charge rate? There have been some complaints about lower kW than 72 but may just be cold or higher SOC.

I don’t recall the charge rate specifics, but my TealaFi log shows I arrived at 53% and charged up to 85%. So I’m guessing i wouldn’t have had a high charge rate for for very long, if at all.

 

[cpa]

Well, buckaroos, I managed to grab a number of new ones on my journey from Pismo to Indian Wells via San Clemente. Alas, traffic and considerable lines forced me to skip about five spots. I had a meeting with my best friend (since kindergarten in nineteen and fifty-eight) so had a bit of a time crunch.

30 November:

Malibu
Hawthorne @ Courtyard. (not Space X; it was full with five ahead of me)
Redondo Beach

1 December

San Clemente
Carlsbad
San Diego — Del Mar Heights
Lake Elsinore
Menifee
Palm Springs

Will grab Rancho Mirage during the week, as it is across from the site where I am getting edified all week.

 

[Bighorn]

Tennessee

Nashville (V3)

 

[JSergeant]

Tennessee

Nashville (V3)

Any noticeable difference in the charging speed?

 

[Bighorn]

Any noticeable difference in the charging speed?

No. Pedestals aren’t numbered. Cabinet is 480V 1200A. Two charger units for 8 stalls. I’m sure my 3 would be about 3 times faster.

 

[CharleyBC]

We added San Mateo (Bridgepoint) and Vallejo on Thanksgiving. (We lost time at the other San Mateo location, stuck in traffic going nowhere at the entrance to the hotel where the Superchargers are. My wife got out to look. There was a tow truck blocking several of the stalls, as well as utterly jamming all traffic, not just for Tesla folks. We found a gap to slip out of the snarl, and went to the other location.)

 

[PLUS EV]

Cabinet is 480V 1200A. Two charger units for 8 stalls.

Then how is it that pairing doesn't matter? 480*1200=576kW so it would seem impossible for 4 cars to plug in and get 200+kW each.

 

[CharleyBC]

Then how is it that pairing doesn't matter? 480*1200=576kW so it would seem impossible for 4 cars to plug in and get 200+kW each.

Interesting question. Maybe instead of pairing, we now have "quadding," or whatever the 4 equivalent of "pairing" is called. First in gets up to 250 kW. So does second. Third would only have 76 kW available if the first two are still at 250 each. Or maybe third gets to steal a bit of the power from the others. And so on for fourth.

It could be that they are banking on four cars not arriving simultaneously, and the taper will have no one at 250 for very long anyway. Heck, even if you share the 576 kW evenly across all four stalls, that's 144 kW each. I'm very happy today when I get in the 140s! I bet statistically there's very little problem here.

 

[tes-s]

Then how is it that pairing doesn't matter? 480*1200=576kW so it would seem impossible for 4 cars to plug in and get 200+kW each.

3P 480v 1200A is 1MW. But how big is the utility transformer that feeds it?

Here in CT, they have installed a 500kVA transformer for an 8-stall location that looks like it has pads for V3 cabinets. Will be interesting to see what that looks like when fully installed.

 

[Big Earl]

Then how is it that pairing doesn't matter? 480*1200=576kW so it would seem impossible for 4 cars to plug in and get 200+kW each.

480 3 phase is three legs of 277. 277*3*1200 = 997,200 Watts

V3 Supercharger cabinets share a common DC power bus that shares power between cabinets and takes power from on-site battery storage, if equipped. The battery storage allows the site to output more than double its grid input for periods of time.

With an extended full load like Kettleman City in Thanksgiving weekend, the site will eventually deplete the battery storage and go to a throttled state based on what’s available from the grid transformer (~125 kW average per vehicle for an 8 stall site).

 

[Big Earl]

3P 480v 1200A is 1MW. But how big is the utility transformer that feeds it?

Here in CT, they have installed a 500kVA transformer for an 8-stall location that looks like it has pads for V3 cabinets. Will be interesting to see what that looks like when fully installed.

8 stall V2 usually gets a 500 kVA transformer. 8 stall V3 sites have been getting 1,000 kVA transformers, which match the 1,200 amp switchgear nicely.

 

[tes-s]

8 stall V2 usually gets a 500 kVA transformer. 8 stall V3 sites have been getting 1,000 kVA transformers, which match the 1,200 amp switchgear nicely.

Usually. But this looks like a V3 pad for an 8-stall site with a 500kVA utility transformer....
Supercharger - Fairfield

And shouldn't an 8-stall V3 site get a 2000kVA utility transformer - 1MW for each of the charging cabinets since each cabinet serves 4 250kW non-shared stalls?

Introducing V3 Supercharging
"Supercharger stations with V3’s new power electronics are designed to enable any owner to charge at the full power their battery can take – no more splitting power with a vehicle in the stall next to you."

 

[theflyer]

Cape May and Tom's River, NJ for me on Saturday. Updating the spreadsheet now.

 

[Big Earl]

Usually. But this looks like a V3 pad for an 8-stall site with a 500kVA utility transformer....
Supercharger - Fairfield

And shouldn't an 8-stall V3 site get a 2000kVA utility transformer - 1MW for each of the charging cabinets since each cabinet serves 4 250kW non-shared stalls?

Introducing V3 Supercharging
"Supercharger stations with V3’s new power electronics are designed to enable any owner to charge at the full power their battery can take – no more splitting power with a vehicle in the stall next to you."

Here are the pre-reveal specs V3, which, according to the data plates on the units, are pretty accurate.

Here’re the pre-reveal V3 specs from NetBrown on reddit. All seems pretty legit. You can’t just make this kind of stuff up, so I give it high likelihood of being correct.

• The liquid cooled cables will actually be much thinner than the current SC cables, the coolant pump is located in the base of the white SC stall where the current cable connects and is hung up (v3 can retrofit into existing v2 chargers), and while the cabinets can support 250kW max (so I suppose it would be possible to upgrade to 250kW in the future), the individual chargers will be max 200kW.
• PV and Power Pack integration is a part of the design spec, but no required.
• 40% better throughput performance compared to v2 per site
• Thermal Foldback improvements over v2
• v3 cabinets get 5 power stages at 70kW output per power stage for 350kW AC -> DC per v3 cabinet
• v3 cabinet also houses 2x DC-DC modules per post yielding 100kWx2 for the 200kW deliverer per post
• Any extra power (assuming the extra 50kW the cabinets can produce versus what the chargers are delivering if the cabinet is maxed, or if only partially maxed, any extra power) can be shared across cabinets. Since multiple cabinets will be at each site, this lessens if not removes the v2 "shared" power with linked chargers
• Site master controller is 4G LTE for communication of all diagnostics (as well as the verify car and billing of power consumed) so better knowledge when a site has a problem - leading to more proactive fixing of sites with broken/mafunctioning chargers
• The cost reduction will come from higher power conversion efficiency (96% for v3 versus 92% for v2), less harmonics, and no overvoltage sensitivity (though the cabinets are larger and heavier than v2), ultimately leading to an approximate 20% more customers served per dollar spent on power
• Overall AC input is 438kVA, 526A
  • Can link up to 7 v3 cabinets per bus (or a block), which can also link to one Power Pack
  • Cabinets are on a shared DC radial configured bus of 880-1000 volts
  • This is then pushed out to the chargers (posts) and DC 180-500v, 250kW max

The Fairfield picture does indeed show a 500 kVA transformer for what looks like electrical prep for two V3 chargers. I wonder if they plan on doing battery storage at this location and keeping the grid connection small to minimize demand charges.

 

[Melanie_S85]

Catching up and ready to travel and hit new superchargers. Anyone know off hand if there is an easily accessible list showing which locations have one or more nose in stations?

9/9/19 Ft Worth - Whitmore
9/20/19 Ft. Stockton, TX
9/20/19 Ozona, TX
11/9/19 Waco, TX

 

[scottf200]

The Fairfield picture does indeed show a 500 kVA transformer for what looks like electrical prep for two V3 chargers. I wonder if they plan on doing battery storage at this location and keeping the grid connection small to minimize demand charges.

FYI, in Bolingbrook IL, (New supercharger in Bolingbrook, IL)
the 1st 8 had a 500 KVA transformer and
the 2nd 8 have a 750 KVA transformer.

 

[AzEd]

I finally added some new supercharger locations to my list. The spreadsheet has been updated.

11/29/19
290 Ehrenberg, AZ
291 Rancho Mirage, CA
292 Palm Springs, CA
293 San Bernadino, CA
294 Fontana, CA
295 Pasadena, CA
296 Glendale, CA

11/30/19
297 Los Angeles - Francisco St, CA

12/01/19
298 Hawthorne - El Segundo Blvd, CA

12/02/19
299 Malibu, CA
300 Ojai, CA

 

[BM3B]

I finally added some new supercharger locations to my list. The spreadsheet has been updated.

11/29/19
290 Ehrenberg, AZ
291 Rancho Mirage, CA
292 Palm Springs, CA
293 San Bernadino, CA
294 Fontana, CA
295 Pasadena, CA
296 Glendale, CA

11/30/19
297 Los Angeles - Francisco St, CA

12/01/19
298 Hawthorne - El Segundo Blvd, CA

12/02/19
299 Malibu, CA
300 Ojai, CA

Congrats on 300! Did you have a toast in Ojai?

 

[AzEd]

Thanks, no toast in Ojai but we continued on to Santa Clarita and had a nice dinner while charging there.

 

[BM3B]

480 3 phase is three legs of 277. 277*3*1200 = 997,200 Watts

V3 Supercharger cabinets share a common DC power bus that shares power between cabinets and takes power from on-site battery storage, if equipped. The battery storage allows the site to output more than double its grid input for periods of time.

With an extended full load like Kettleman City in Thanksgiving weekend, the site will eventually deplete the battery storage and go to a throttled state based on what’s available from the grid transformer (~125 kW average per vehicle for an 8 stall site).

Three phase power is confusing, it is a megawatt cabinet but not because voltage is 3x.
Power in Three-Phase AC Circuits | Introduction to AC Circuits | InformIT

Summary:
Voltage (line) = sqrt(3) * Voltage (phase)
Current (line) = sqrt(3) * Current (phase)
Note: this assumes the voltages are 120 deg out of phase, and that the load is delta connected. The square root of 3 is because it is 3 phase. My 240 V circuit at home is 2 phase so 2*120.

Phase is for a single cable to ground or neutral, “line” is for a load on the system when you are tapping off of all 3.

So, the total power to a load is:
Power (line) = 3* Voltage (phase)*Current (phase)

= 3*277*1200 = 0.997 MW