Search found 379 matches

by francisco.shi
Sun, 13 Sep 2020, 14:07
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 152
Views: 11467

Re: jonescg's home battery storage system

How is the installation going?
Have you got the inverter and battery running yet?
by francisco.shi
Fri, 11 Sep 2020, 16:37
Forum: EV Motoring
Topic: John Cadogan Kona review
Replies: 6
Views: 114

Re: John Cadogan Kona review

He did a review of the ionic a while back and after watching it I would say he really liked the car. It seems he is very impressed with every electric car he has driven. Almost to the point of appearing he would prefer an EV over an ICE vehicle. He even makes the comment that the range really is not...
by francisco.shi
Mon, 07 Sep 2020, 15:42
Forum: Technical and conversion discussion
Topic: small HV fuses
Replies: 4
Views: 89

Re: small HV fuses

The fuses you have are probably 3AG which are 1/4 x 1 1/4 inch
by francisco.shi
Mon, 07 Sep 2020, 15:38
Forum: Technical and conversion discussion
Topic: small HV fuses
Replies: 4
Views: 89

Re: small HV fuses

The ceramic fuses work in a slightly different way to the glass fuses. The glass fuse has a wire that melts and the glass is there just to keep the two ends and stop you touching the wire. The ceramic fuses (HRC) have sand inside as well as the wire. If there is an arc when the wire melts the sand w...
by francisco.shi
Fri, 04 Sep 2020, 08:23
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 152
Views: 11467

Re: jonescg's home battery storage system

Loom for any other things that may be plugged in like fridge, phone chargers, desktop computer, TV ... even if they are on standby they still use a small amount of power which adds up. About the inverter selling power out of the battery. I wonder if there is some rules about how fast inverters are e...
by francisco.shi
Thu, 03 Sep 2020, 16:48
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 152
Views: 11467

Re: jonescg's home battery storage system

You mean they only read power in or out for all the phases together.
They do not measure each phase individually. Right?
by francisco.shi
Thu, 03 Sep 2020, 15:52
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 152
Views: 11467

Re: jonescg's home battery storage system

Does that mean that if you are consuming 2kw on phase 1 and nothing on say phase 2 and your inverter is connected to phase 2 then it will try to push 2kw out thru phase 2. Will the electricity company then sell you 2kw at full price then buy 2kw from you at feed in tariff price or will it consider i...
by francisco.shi
Thu, 03 Sep 2020, 15:06
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 152
Views: 11467

Re: jonescg's home battery storage system

I was looking at the single line diagram. I assume the EZ power meter is only measuring the phase that the inverter output is connected to and not all 3 phases. How do you set the 3kw export limit? I have been having some trouble with my inverter in that if the load changes it takes a long time to z...
by francisco.shi
Wed, 02 Sep 2020, 20:15
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 316
Views: 54656

Re: 4Springs' Brumby

What is the cell voltage when fully charged?
by francisco.shi
Wed, 26 Aug 2020, 18:09
Forum: Batteries, charging, management and monitoring
Topic: what is peoples thoughts on Active Equalizer Balancer Boards?
Replies: 16
Views: 1047

Re: what is peoples thoughts on Active Equalizer Balancer Boards?

It is a bit big. You would need 4 units to do a 14S lithium pack which would be almost the same volume as a cell.
by francisco.shi
Tue, 25 Aug 2020, 12:27
Forum: Members Machines
Topic: Francisco's Electric Pajero
Replies: 176
Views: 23020

Re: Francisco's Electric Pajero

I had to put the diff upside down so it spins in the original direction. The bearings on the diff are designed to push rather than pull. So the plug that you see is actually the drain plug. I was also concerned about the oil getting to the thrust bearings but the original diff for the Pajero had the...
by francisco.shi
Fri, 21 Aug 2020, 08:15
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 152
Views: 11467

Re: jonescg's home battery storage system

I have never been able to get the inverter to do anything useful with the battery. No matter what settings I put the inverter stops at 44v. The top voltage seems to work ok. But the estimation of state of charge has nothing to do with reality. It looks more of a reflection of current going in or out...
by francisco.shi
Thu, 20 Aug 2020, 16:15
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 152
Views: 11467

Re: jonescg's home battery storage system

When I check on the AGL website for the power sold it matches the reporting from the inverter. Screenshot_20200820-181126_AGL Energy.jpg Here is an example of it selling .1kwh over a 30min period. This picture is from the utility meter. If I look I can find some times up to .5kwh being sold over a 3...
by francisco.shi
Thu, 20 Aug 2020, 12:00
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 152
Views: 11467

Re: jonescg's home battery storage system

There is a 500w continuous load. It often sells for min. Screenshot_20200820-135618_SEMS Portal.jpg You can see here it starts taking energy out of the battery. I have seen it sell up to 2kwh out of the battery during times when there is no solar input. Any positive in the yellow line is power sold....
by francisco.shi
Thu, 20 Aug 2020, 06:59
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 152
Views: 11467

Re: jonescg's home battery storage system

Let us know how the inverter behaves. I have a Goodwe inverter and some times it sells electricity from the battery to the grid at night. I wonder if there is some setting that is not right. It generally happens when a load turns off. It seems the reaction time is very slow.
by francisco.shi
Sun, 16 Aug 2020, 16:33
Forum: Members Machines
Topic: Francisco's Electric Pajero
Replies: 176
Views: 23020

Re: Francisco's Electric Pajero

Back of the diff is attached.
Diff back attachment.
Diff back attachment.
20200816_130040.jpg (1.88 MiB) Viewed 260 times
I will bring the rewound motor with inverter to the meeting on Wednesday.
by francisco.shi
Tue, 11 Aug 2020, 20:19
Forum: Members Machines
Topic: Francisco's Electric Pajero
Replies: 176
Views: 23020

Re: Francisco's Electric Pajero

Working on the front now. I decided to make new half shafts and get rid of the spacers between the diff and the cv joints.
Front diff with extended half shafts.
Front diff with extended half shafts.
20200811_205746.jpg (1.86 MiB) Viewed 300 times
Now I have to fix the back part of the diff and finish the other gearbox and should be able to install the front motor.
by francisco.shi
Tue, 11 Aug 2020, 19:49
Forum: Batteries, charging, management and monitoring
Topic: what is peoples thoughts on Active Equalizer Balancer Boards?
Replies: 16
Views: 1047

Re: what is peoples thoughts on Active Equalizer Balancer Boards?

The boards must be faulty.
I have been using my active balancer and the cells are within 8mv of each other. I have set it to stop balancing once the difference is less than 10mv. The maximum difference I have ever seen is 20mv.
by francisco.shi
Mon, 10 Aug 2020, 05:53
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 316
Views: 54656

Re: 4Springs' Brumby

As the charger gets close to its maximum output voltage it may not be able to push the required current so you may not be charging the battery with as much current as you think.
by francisco.shi
Sun, 09 Aug 2020, 10:23
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 316
Views: 54656

Re: 4Springs' Brumby

I did some measurements a while ago because the state of charge did not seem to match what was on the data sheet. What I did was measure I started at about 3.2v Then I put the battery on charge and measured the voltage with respect to the Ah that had gone into the battery. Then worked out a percenta...
by francisco.shi
Tue, 04 Aug 2020, 20:33
Forum: Members Machines
Topic: Francisco's Electric Pajero
Replies: 176
Views: 23020

Re: Francisco's Electric Pajero

Some videos of motor running. This is slow acceleration which shows current meter reading a negative current for a very short time and power supply showing zero current and voltage increasing slightly. The motor was running from a 12v lead acid battery so I could run more current than the power supp...
by francisco.shi
Thu, 30 Jul 2020, 21:02
Forum: Members Machines
Topic: Francisco's Electric Pajero
Replies: 176
Views: 23020

Re: Francisco's Electric Pajero

Just a quick note on resolver. Here are some waveforms from the resolver. zWBYOoaHOXs The yellow and purple traces are the output of the resolver. The output is sine and cos of the angle of the resolver. The blue trace is the exciter coil (input) the exciter coil needs a sine wave so the out puts ar...
by francisco.shi
Tue, 28 Jul 2020, 06:31
Forum: Members Machines
Topic: Francisco's Electric Pajero
Replies: 176
Views: 23020

Re: Francisco's Electric Pajero

Thank you for the compliments. I do this kind of project as a job. So I have experience in mechanical and electronic design. As for the electronics I will need to put some conformal coating on all the electronics and coat the busbars in the rubbery goo used on switchboards. I will also have to remak...
by francisco.shi
Mon, 27 Jul 2020, 20:53
Forum: Members Machines
Topic: Francisco's Electric Pajero
Replies: 176
Views: 23020

Re: Francisco's Electric Pajero

Then bolt the capacitor and the bracket that holds the capacitor to the plastic blocks. Then slide the whole assembly into the black plastic blocks and bolt the motor terminals (with great difficulty) to the IGBT terminals. I need to think of a good way to do this. 20200727_210652.jpg I have made a ...