Search found 202 matches

by Rusdy
Wed, 04 Sep 2019, 10:11
Forum: Renewable Energy and Storage (Non-EV)
Topic: Tesla PW2
Replies: 34
Views: 2382

Re: Tesla PW2

...All you need to do is program the charger/inverter to keep the battery within specified range... This was my original plan, i.e. learn how ChaDeMo protocol works (need to buy the standards, legally, of course :geek: ), then design and built my own HV charger that is directly connected to solar P...
by Rusdy
Mon, 02 Sep 2019, 08:33
Forum: Hyundai
Topic: Hyundai Sales Tactics
Replies: 38
Views: 1154

Re: Hyundai Sales Tactics

... The cars don't have much margin on them, and the servicing is almost non-existent. So you can see that a dealer would be better served by selling you a petrol car, or moving you on to another dealer. With this in mind, we have an excellent relationship with our local dealer. They have a mindset...
by Rusdy
Fri, 09 Aug 2019, 15:22
Forum: Scooters, mopeds and electric toys
Topic: Are hybrid bikes worth the money?
Replies: 7
Views: 255

Re: Are hybrid bikes worth the money?

Echoing what Mike has said. However, without suspension, make it easier if you're a DIY-er though, i.e. long term maintenance.

Mine has run close to 50,000km (over the top details here).

Image
by Rusdy
Mon, 24 Jun 2019, 06:36
Forum: Batteries, charging, management and monitoring
Topic: Increased Internal Resistance
Replies: 1
Views: 241

Re: Increased Internal Resistance

I had Dunning-Kruger moment today. I thought I know my lithium battery equivalent circuit. How wrong I was!! Anyhoo, my grief with my aging Leaf battery is not so much due to internal resistance, but highly increased polarisation effect. I had another experiment with fast charging with much lower So...
by Rusdy
Tue, 14 May 2019, 16:12
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 2228

Re: Offgrid solar project

My favourite is still from this guy:
https://www.youtube.com/watch?v=jPtBYg6N29E

Who needs solar controller or batteries when you can connect your appliances directly to solar PV! :lol:
by Rusdy
Tue, 14 May 2019, 10:42
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 2228

Re: Offgrid solar project

... How is it with buck/boost converter when the source is not a constant voltage source and work on the vertical line of the solar panel characteristic ? I had an experiment with boost converter , it didn't go well when Pin < Pout. The boost converter couldn't recover even if the Pin > Pout (so, a...
by Rusdy
Mon, 13 May 2019, 19:40
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 2228

Re: Offgrid solar project

Is there a buck converter that does say 96V in to 48V out with 600W+? I had a quick look and didn't see one. The other issue I have is a simple buck converter has a tendency, when they fail, to supply Vin to Vout. So 80V input to a 48V inverter would be bad. Ah yes, you're right, the only one avail...
by Rusdy
Fri, 10 May 2019, 22:40
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 2228

Re: Offgrid solar project

I've been using 'el cheapo buck converter for mine (no MPPT) and has been working well for more than two years so far. Since I got the PV on the cheap, not worth spending the money on the MPPT controller. Utilisation factor is very poor, but not a concern for my purpose (I just need extra Wh for win...
by Rusdy
Tue, 07 May 2019, 16:09
Forum: Batteries, charging, management and monitoring
Topic: Increased Internal Resistance
Replies: 1
Views: 241

Increased Internal Resistance

While the crowds want more battery capacity, I'm content with more fast charger networks, i.e. stops more. However, I recently found out the degraded battery of my Nissan Leaf considerably increase (fast) charging time, i.e. more than doubled!! Yikes!! :o My 'Hx' degrades pretty bad, and slows down ...
by Rusdy
Thu, 18 Apr 2019, 15:20
Forum: Charging Infrastructure
Topic: Newbie question about practicalities of charging and range
Replies: 33
Views: 1277

Re: Newbie question about practicalities of charging and range

That opennem is awesome! WA has similar one (with even better graphics, part snapshot below) in the past. But then, AEMO took over...

Image
by Rusdy
Tue, 02 Apr 2019, 14:08
Forum: Renault
Topic: Zoe range vs temp & speed
Replies: 16
Views: 1786

Re: Zoe range vs temp & speed

Also overtaking, up the hills. Only one way to find out. We need someone to drive one country 😀 Desperately need an Ioniq user help here!! I can vouch my Leaf did it just under 0.18kWh/km as well years ago (when it still had the range to do it) between Mandurah and Harvey. Did 110, overtaking, Airc...
by Rusdy
Tue, 02 Apr 2019, 09:09
Forum: Renault
Topic: Zoe range vs temp & speed
Replies: 16
Views: 1786

Re: Zoe range vs temp & speed

... Lowest est range we have ever seen after a full charge was 217km. That was after driving at 110kmh with hills. :o That's a really good confirmation that the size of the car doesn't affect much on efficiency when you travel at 110kph (yours roughly 0.18kWh/km). Makes me more impressed with Ioniq...
by Rusdy
Fri, 22 Mar 2019, 11:03
Forum: Batteries, charging, management and monitoring
Topic: EV BATTERY DISCUSSION AND SUGGESTIONS
Replies: 10
Views: 617

Re: EV BATTERY DISCUSSION AND SUGGESTIONS

That mass includes the charger, DC/DC converter, HV switch gear, cooling system and related control electronics. If you take that mass out of the system you have something closer to 200 Wh/kg. The 63 Ah cells from LG are Li-NMC, not titanate. Tesla's 2170 cell is indeed impressive. The cell itself ...
by Rusdy
Fri, 22 Mar 2019, 08:57
Forum: Batteries, charging, management and monitoring
Topic: EV BATTERY DISCUSSION AND SUGGESTIONS
Replies: 10
Views: 617

Re: EV BATTERY DISCUSSION AND SUGGESTIONS

francisco.shi wrote:
Fri, 22 Mar 2019, 07:08

... The total energy density of the pack including the mounting hardware and cooling system is 207wh/kg...
I've just found Model-3 pack density is merely 159.5Wh/kg. How on earth yours get that high, even with LTO? I thought LTO is much lower energy density?? I'm super impressed!! :o
by Rusdy
Thu, 07 Mar 2019, 08:57
Forum: General EV Discussion
Topic: Total Cost of Ownership
Replies: 1
Views: 328

Re: Total Cost of Ownership

Wow, you're definitely one of the lucky one to get i-Miev @15k 4 years ago. Depreciation is always the killer dwarfing everything else. I was so tempted to get i-Miev exactly 4 years ago as well from the dealer advertised at 14k. Too bad the 4-seat simply won't work for my family, so I got Leaf inst...
by Rusdy
Mon, 25 Feb 2019, 11:00
Forum: Nissan Leaf
Topic: How common are leaf with 6.6kw on board chargers?
Replies: 5
Views: 475

Re: How common are leaf with 6.6kw on board chargers?

Hi Raoul,
The 6.6kW on-board chargers are import model. Definitely need to check this link for imports.
by Rusdy
Thu, 14 Feb 2019, 09:10
Forum: Audi
Topic: Inside e-tron
Replies: 2
Views: 812

Re: Inside E-Tron

Wow, lots of interesting read from: e-Propulsion shockwave: Good details on how 'un-prepared-ness' of incumbent car manufacturer. Excellent expansion of what this guy said ) Page 10: The need to add 'A' to 'STEM', I echo this so much; It's e-tron, not E-Tron apparently... :lol: . The product manager...
by Rusdy
Thu, 17 Jan 2019, 10:56
Forum: Other
Topic: Rivian R1T and R1S
Replies: 4
Views: 632

Re: Rivian R1T and R1S

... https://www.nxtbook.com/nxtbooks/sae/19AUTP01/ ... Thanks for the magazine link. Haven't read good automotive magazine for a while. I've forgotten how much engineering been poured into making cars after reading the multiphysics simulator. Gone the days where cars just a shell of metal with expl...
by Rusdy
Wed, 16 Jan 2019, 08:57
Forum: Charging Infrastructure
Topic: Ultra fast chargers (350kW/HPC) in Victoria
Replies: 16
Views: 1687

Re: Ultra fast chargers (350kW/HPC) in Victoria

... They're aiming for the trip to be no harder than the same trip in a petrol car... This is my main gripe. I think 'harder' has gone un-criticised. Before having my Leaf and no young kids, it would be easy for me to stay driving for the whole 4 hours without stops, and then quick fuel stop for 5 ...
by Rusdy
Tue, 15 Jan 2019, 09:40
Forum: Charging Infrastructure
Topic: Ultra fast chargers (350kW/HPC) in Victoria
Replies: 16
Views: 1687

Re: Ultra fast chargers (350kW/HPC) in Victoria

I understand the logic of the spacing between fast chargers on major roads. When demand becomes higher , in the future, rather than double the number of chargers at these locations, wouldn't it be better to locate extra chargers in between? Echoing you here. I simply don't understand the current fi...
by Rusdy
Wed, 09 Jan 2019, 14:37
Forum: Hyundai
Topic: The full Hyundai Ioniq range headed down under
Replies: 61
Views: 11219

Re: The full Hyundai Ioniq range headed down under

Hyundai has an official app Another wow. I'm impressed here :o :shock: To be honest, after owning Leaf for 3.5 years, the remote control for climate (i.e. turning on AC remotely) is the only thing useful (and somehow become a compulsory function for me these days). Everything else is nice to have (...
by Rusdy
Tue, 08 Jan 2019, 14:12
Forum: Hyundai
Topic: The full Hyundai Ioniq range headed down under
Replies: 61
Views: 11219

Re: The full Hyundai Ioniq range headed down under

If anyone's got any questions about it they'd like to ask an owner feel free! Congrats!! Thinking to geek out connecting to the car via OBD-2? I can't seem to find standard Ioniq app out there (i.e. Google). Then again, it's unlike Leaf where you need one :lol: . I'm impressed how Hyundai advertise...
by Rusdy
Wed, 05 Dec 2018, 08:36
Forum: General EV Discussion
Topic: Total Cost of Ownership - ICE and EV
Replies: 9
Views: 1294

Re: Total Cost of Ownership - ICE and EV

Hi Kim, If you don't need to travel long distance (a.k.a. city dweller only), then the imported version of 2nd hand Leaf will be perfect for you. Depreciation is definitely the biggest cost, dwarfing the fuel and maintenance cost. So, minimising depreciation is the key. Make sure you'll get the Niss...
by Rusdy
Fri, 30 Nov 2018, 11:45
Forum: General EV Discussion
Topic: Assembling a team to develop an EV platform in Brisbane
Replies: 3
Views: 596

Re: Assembling a team to develop an EV platform in Brisbane

You make me wonder what's going on with those in Evans Motor team. I was so bloody certain back then (maybe as far as early 2010-ish?) that these guys will take over the world. 8-)