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Re: General Discussions - northernblue - 02-14-2024

(02-14-2024, 05:56 AM)ElwoodBlues1 link Wrote:A 12v $60 Jump Starter will start your EV but you cant charge the battery with them, a Jackery or Bluetti type powerstation at the top end might be able to supply 1800-2000watts which could give you 10-12 kilometres worth of juice but thats going to set you back $3-4K.
You can use your EV to power your home, you need a bidirectional charger so you can convert DC back to AC for your home.....I believe but dont quote me that a couple of the present Mitsubishi's one being the Outlander PHEV can be configured for BiDirectional charging. Id expect it to become the norm across all EVs as well as being able to power appliances directly.
Think I read that a EV from Nissan was trialled in Japan and powered a house for 4 days.....

Yeah, it all comes down to battery capacity and load.
I've spoken to guys with tesla powerwalls (20Kwh ?) and plugging in their 70odd Kwh cars and lasting 3-4 days.
The bottom line is its all doable with some planning on your part and the gov.

Speaking of governments role, I also believe that the NT still has 3 large scale solar arrays that have been completed for 2+ years but our electricity distributor hasnt ticked them off to allow them to connect to the grid !
Sitting there idle.

I've spoken to guy overseas who has just handed back his electricity meter because for the past 2 years (I've seen pics of his bills) his consumption charge was $0 per month.
He was happy to pay the daily charge to have mains  backup but got constant grief in the form of various random inspections because they didnt believe he was using no power.


Re: General Discussions - LP - 02-14-2024

(02-14-2024, 05:03 AM)northernblue date Wrote:As i have stated previously that I'm not an ev owner but my understanding is that "fast chargers" use DC and most home chargers use AC.
All batteries are charged with DC, whether the charge circuit converts DC to DC or AC to DC makes no difference, most EV cars have smart sockets for both AC or DC charging. DC can mean CW(Constant Wattage, Constant Current, Constant Voltage) or Pulsed dependant on the charger design, but it's all DC. Some modulate power by varying voltage, others use PWM(Pulse Width Modulation.), many use a mix of both to recharge and condition batteries electrodes at the same time.

If you have a 12v / 240v inverter, you can use a 12v source like a lead acid battery to charge your EV enough to get it to a charge station. You could use jumper cables to run an inverter off the idling petrol or diesel vehicle, and the outback charge stations are often just diesel generators which have an integrated 240v inverter, coin or credit card operated of course, and which of course completely invalidates the carbon neutral use of an EV.

Most portable SolarPV won't have anywhere near the power to give any useful range via an inverter, at least not in a single day of charging, it would be like trying to warm your bath water with a candle. The best rooftop SolarPV panels are much more efficient than the portables and yet roof top panels typically only deliver a few hundred watts each day, I think the very best make it to about 650 Watts in a perfect conditions. Good portable panels are about 50% of the solid roof top variety. Your EV battery and motors are measured in tens of Kilowatts, I think a low end Tesla is in the order of 60 ~ 70Kw!

An interesting point, it you bolted a solid SolarPV to the roof of your Tesla in a weird attempt to extend the range, you would actually lose range, because the weight and drag of the panel more than offsets the energy it creates.


Re: General Discussions - northernblue - 02-14-2024

(02-14-2024, 06:52 AM)LP link Wrote:All batteries are charged with DC, whether the charge circuit converts DC to DC or AC to DC makes no difference, most EV cars have smart sockets for both AC or DC charging. DC can mean CW(Constant Wattage, Constant Current, Constant Voltage) or Pulsed dependant on the charger design, but it's all DC. Some modulate power by varying voltage, others use PWM(Pulse Width Modulation.)

If you have a 12v / 240v inverter, you can use a 12v source like a lead acid battery to charge your EV enough to get it to a charge station. You could use jumper cables to run an inverter off the idling petrol or diesel vehicle, and the outback charge stations are often just diesel generators which have an integrated 240v inverter, coin or credit card operated of course.

Most portable SolarPV won't have anywhere near the power to give any useful range via an inverter, at least not in a single day of charging, it would be like trying to warm your bath water with a candle. The best rooftop SolarPV panels are much more efficient than the portables and yet roof top panels typically only deliver a few hundred watts each day, I think the very best make it to about 650 Watts on a perfect conditions. Good portable panels are about 50% of the solid roof top variety. Your EV battery and motors are measured in tens of Kilowatts, I think a low end Tesla is in the order of 60 ~ 70Kw!

An interesting point, it you bolted a solid SolarPV to the roof of your Tesla in a weird attempt to extend the range, you would actually lose range, because the weight and drag of the panel more than offsets the energy it creates.

""When it comes to electric mobility, two types of electrical currents can be used to charge an electric vehicle (EV)—AC (alternating current) and DC (direct current).

All home EV chargers and the majority of public charging stations use AC, while DC is used for fast charging.

When we talk about charging an EV, the main difference between AC and DC charging (and the time it takes to do so) is where the conversion from AC to DC happens, i.e. in the vehicle or the charging station.

    The power that comes from the grid is always AC (alternating current).
    The energy stored in batteries is always DC (direct current).

This article explores the differences between AC and DC EV charging and takes a look at how it works.""

https://blog.evbox.com/difference-between-ac-and-dc

Without looking for my tape measure so we can have a measure off that is the first article that came up when I googled.
Whilst you're not wrong that at some point its gotta be DC that goes into the battery, we were talking about charging points and you claimed that all charging points are DC.


Re: General Discussions - ElwoodBlues1 - 02-14-2024

(02-14-2024, 06:20 AM)northernblue link Wrote:Yeah, it all comes down to battery capacity and load.
I've spoken to guys with tesla powerwalls (20Kwh ?) and plugging in their 70odd Kwh cars and lasting 3-4 days.
The bottom line is its all doable with some planning on your part and the gov.

Speaking of governments role, I also believe that the NT still has 3 large scale solar arrays that have been completed for 2+ years but our electricity distributor hasnt ticked them off to allow them to connect to the grid !
Sitting there idle.

I've spoken to guy overseas who has just handed back his electricity meter because for the past 2 years (I've seen pics of his bills) his consumption charge was $0 per month.
He was happy to pay the daily charge to have mains  backup but got constant grief in the form of various random inspections because they didnt believe he was using no power.
The NT was/is always a bit of a mess with solar, think an Italian conglomerate own a few of the facilities and the system up there has too many cooks in the kitchen. They wont connect those solar facilities to the grid because of storage battery issues and a fear the ageing infrastructure will fall over plus when you connect a lot of solar arrays at once you get poorer regulation which means dirty power which spikes the line up to very high voltages which kills older infrastructure so they switch those feeds off.
They will probably need to get a 3rd party Engineering Consultant company in to test and sign off on the system because thats how it usually works and they dont come cheap.
NT Government give good rebates on EV vehicles dont they?


Re: General Discussions - northernblue - 02-14-2024

(02-14-2024, 07:09 AM)ElwoodBlues1 link Wrote:The NT was/is always a bit of a mess with solar, think an Italian conglomerate own a few of the facilities and the system up there has too many cooks in the kitchen. They wont connect those solar facilities to the grid because of storage battery issues and a fear the ageing infrastructure will fall over plus when you connect a lot of solar arrays at once you get poorer regulation which means dirty power which spikes the line up to very high voltages which kills older infrastructure so they switch those feeds off.
They will probably need to get a 3rd party Engineering Consultant company in to test and sign off on the system because thats how it usually works and they dont come cheap.
NT Government give good rebates on EV vehicles dont they?

You're certainly more knowledgeable of the tech side than me lol.
I do know a guy who is involved in the remote generation and distribution and he did say that the biggest problem with solar production was things like cloud cover, as in everything is humming along and a cloud comes over and output drops, batteries are needed to keep everything running whilst the (usually) diesel generator kicks in.
He says its not bad, it just needs to be integrated and well managed.

I'm not sure of the ev subsidy's but I believe the battery one is better than most.
Something that helps NT take up solar and battery is that many are remote, at least compared to you mob down south.
Even if theres power to the front, the acreage can still make renewables stack up well price wise.


Re: General Discussions - kruddler - 02-14-2024

(02-14-2024, 06:52 AM)LP link Wrote:If you have a 12v / 240v inverter, you can use a 12v source like a lead acid battery to charge your EV enough to get it to a charge station. You could use jumper cables to run an inverter off the idling petrol or diesel vehicle, and the outback charge stations are often just diesel generators which have an integrated 240v inverter, coin or credit card operated of course, and which of course completely invalidates the carbon neutral use of an EV.

Just curious, because i have a foldable 200W solar panel which i use to top up my 2nd (and 3rd) batteries while i am camping. 1 is lithium.
My 2nd battery is hooked up to the car and charges while i drive and cuts off if it gets too low. It lives permananetly in my canopy.
The 3rd battery is encased in a cheap battery box that i pull out of the canopy and sit next to my camping fridge for days on end. Powers lights and my phone.
I've also got a Milwaukee charger that comes with a 12v cig socket that can charge up my tool batteries....which i use for lights, chainsaws, radio, whatever.

With that setup, even if overcast or raining, i can pretty much be self sustaining for....as long as i need to be. Recently i set up the solar panel underneath our gazebo (in the shade, while it was raining) and it was still getting enough sun to charge my battery.

I also have a 1500W invertor i can use to get 240v plugs if required.

So...if i can live outdoors with that setup, surely it could help me charge a car. Not sure what type of current draw they take, or how much power storage is typically on board, but to me it seems like a half decent alternative to hooking up to the grid.
Obviously, you could get bigger outdoor solar panels pretty easily to beef up the system as well. They are relatively cheap.


Re: General Discussions - ElwoodBlues1 - 02-14-2024

(02-14-2024, 08:04 AM)kruddler link Wrote:Just curious, because i have a foldable 200W solar panel which i use to top up my 2nd (and 3rd) batteries while i am camping. 1 is lithium.
My 2nd battery is hooked up to the car and charges while i drive and cuts off if it gets too low. It lives permananetly in my canopy.
The 3rd battery is encased in a cheap battery box that i pull out of the canopy and sit next to my camping fridge for days on end. Powers lights and my phone.
I've also got a Milwaukee charger that comes with a 12v cig socket that can charge up my tool batteries....which i use for lights, chainsaws, radio, whatever.

With that setup, even if overcast or raining, i can pretty much be self sustaining for....as long as i need to be. Recently i set up the solar panel underneath our gazebo (in the shade, while it was raining) and it was still getting enough sun to charge my battery.

I also have a 1500W invertor i can use to get 240v plugs if required.

So...if i can live outdoors with that setup, surely it could help me charge a car. Not sure what type of current draw they take, or how much power storage is typically on board, but to me it seems like a half decent alternative to hooking up to the grid.
Obviously, you could get bigger outdoor solar panels pretty easily to beef up the system as well. They are relatively cheap.
https://www.youtube.com/watch?v=dPTs_KOvtX0



Re: General Discussions - kruddler - 02-14-2024

Id like to see some more of his videos to get a better understanding of how serious he is with that as it appears to be one big piss take to me.

But he'd do a lot better if he turned his car around 90 degrees to face the sun rather than be side on to it.

...but at least it's somewhat plausible.


Re: General Discussions - LP - 02-14-2024

(02-14-2024, 09:56 AM)kruddler date Wrote:Id like to see some more of his videos to get a better understanding of how serious he is with that as it appears to be one big piss take to me.

But he'd do a lot better if he turned his car around 90 degrees to face the sun rather than be side on to it.

...but at least it's somewhat plausible.
If you had the time to sit and wait for a charge, days, and if your next destination was close enough on fairly flat or downhill run, you'd have a chance. In that video the effective charge rate with four 100W portable SolarPV panels was several hours per kilowatt. That's several hours for a few kilometres of flat conservative driving, if you didn't need to transport stuff you could probably walk that far faster than waiting for the charge.

Let's say his portable SolarPV can give him 2Kw per day charging, ignoring the standby current consumption, that's 40 days for a full charge off an 80Kw battery.

Keep in mind, your off-road EV is going to be bigger and heavier than say a Tesla S, but even a Tesla S use about an 80Kw or 98Kw battery to get to full range. I read some reports the 4WD EV might use batteries as high as 120Kw to 150Kw.

Real world range depends on many things such as terrain, weather, regenerative braking, driving style, etc., etc.. Actually, I know people who have toured for hundreds of kilometres around the Blue Mountains in a Tesla and used only 40km of battery range through regenerative braking, but it was a carefully planned trip just to see if it was possible.


Re: General Discussions - DJC - 02-14-2024

(02-13-2024, 11:29 PM)Baggers link Wrote:Anyone else effected adversely by those ferocious winds yesterday! We were lucky (in West Gippsland) to not lose power... though I was waiting for the lights to go out! However, internet is not much better than dial-up at present!

Thought of you, David (DJC) when reports of 6 power towers being blown over in the Greater Geelong region tripped Loy Yang A!

As a humourous aside, I was outside with our dog (Doberman) when the wind and thunder hit hard... her hackles went up as she barked at the skies but when the rain came she ducked for cover!

We copped the wind gusts but the Bellarine didn’t have power outages.

As often happens, the rain cells passed to our north and south and we only got 0.5mm of rain when a decent soaking is sorely needed.

Some folk are still without power and it seems that they will be for some time.  The six towers on the Mooroobool-Sydenham line will take a while to replace.

The cost of such widespread outages, both in terms of infrastructure and cost to families, industry and primary producers must give cause to revisit underground powerlines, particularly when similar weather events are now quite common.

Our hounds slept through the storm.  The horse can be spooked by wind noise but he just turned his butt to the wind and continued chomping grass.

The neighbours’ vineyard has been copping a pounding from the wind and they are constantly repairing the bird netting.  I imagine their workload grew significantly.

Interestingly, even with Loy Yang and one of the largest wind farms off line, we still had too much power for the network and had to power shed.  The weak link is our vulnerable transmission and distribution infrastructure.

Here’s hoping folk get their power back soon … and governments starting thinking about weather proofing the system.