Search found 440 matches

by francisco.shi
Today, 08:07
Forum: Electric motors and controllers
Topic: DC Motors - Shunt?
Replies: 17
Views: 189

Re: DC Motors - Shunt?

I am sure my friend will sell you a board. I am using it on my conversion so I could help you with the software.
by francisco.shi
Today, 08:05
Forum: Electric motors and controllers
Topic: DC Motors - Shunt?
Replies: 17
Views: 189

Re: DC Motors - Shunt?

The velocity loop is very easy to do. Just 3 or 4 lines of code. (Meaning a 5min job) You need a board that has a CAN bus interface. A friend is making a body controller and it was meant to be used to run a leaf motor. We already have the leaf messages. Grahame from Suzie auto offered to lend his im...
by francisco.shi
Today, 08:00
Forum: Nissan
Topic: Non OEM Leaf battery upgrade?
Replies: 59
Views: 12576

Re: Non OEM Leaf battery upgrade?

RayEllison wrote: Yesterday, 17:27 If anyone is interested in a bulk group buy of 30KWh or 40 KWh leaf batteries and doing some canbus hacking to install them, I'm interested also.

Any thoughts Australia?
Where are you?
I assume you have a leaf?
by francisco.shi
Thu, 03 Dec 2020, 16:09
Forum: Electric motors and controllers
Topic: DC Motors - Shunt?
Replies: 17
Views: 189

Re: DC Motors - Shunt?

Speed control is quite simple. I presume all inverters take a torque command (at least the leaf and my inverters do) and will send speed feedback. All you need to do is have a set point for your speed work out the difference between your set point and the speed feedback from the inverter and multipl...
by francisco.shi
Wed, 02 Dec 2020, 19:05
Forum: Electric motors and controllers
Topic: DC Motors - Shunt?
Replies: 17
Views: 189

Re: DC Motors - Shunt?

A quarter bridge controller will not slow you down but it will hit a maximum speed.
It will not overspend like a series wound motor.
by francisco.shi
Mon, 30 Nov 2020, 13:19
Forum: MG EVs
Topic: MG ZS EV
Replies: 53
Views: 2503

Re: MG ZS EV

I went to have a look at one today. I went to the Kedron dealer and the service was really bad. The guy was like "Are you going to put a deposit?" Then I said I would like a test drive. I can't tell you without driving it. Then he goes "are you going to put a deposit if it drives ok". I just told hi...
by francisco.shi
Mon, 30 Nov 2020, 04:17
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 626
Views: 70628

Re: Prelude conversion project - some questions

The energy density of your pack will be really good.
I always wondered if you could seal the ends of the cells to the plastic plate could you run coolant thru the gap? This would be the ultimate cooling system.
by francisco.shi
Sun, 29 Nov 2020, 15:04
Forum: Electric motors and controllers
Topic: DC Motors - Shunt?
Replies: 17
Views: 189

Re: DC Motors - Shunt?

I think I can answer most questions on motors.
I got an brushless inverter working from scratch.
by francisco.shi
Sun, 29 Nov 2020, 09:58
Forum: Electric motors and controllers
Topic: DC Motors - Shunt?
Replies: 17
Views: 189

Re: DC Motors - Shunt?

A shunt wound DC motor will be able to regen energy to the battery as long as you have the right controller. You will need a half bridge instead of a single transistor for the series wound motors. An AC motor may be more efficient and it could be liquid cooled which would make the motor smaller. I t...
by francisco.shi
Sat, 28 Nov 2020, 20:36
Forum: Members Machines
Topic: Francisco's Electric Pajero
Replies: 194
Views: 25475

Re: Francisco's Electric Pajero

I made some more progress today. Installed the two motors in the battery box. 20201128_170203.jpg 20201128_170103.jpg 20201128_170147.jpg And got them both running. YdSvkIWI9CE The front motor is the one that was rewound to a lower voltage hence the front wheels spin faster. At the moment it is runn...
by francisco.shi
Fri, 27 Nov 2020, 11:09
Forum: Renewable Energy and Storage (Non-EV)
Topic: MKS-II-5KWB Repair Please help
Replies: 21
Views: 193

Re: MKS-II-5KWB Repair Please help

I just had a look at the picture. I would be 99% certain they are MOVs. When MOVs take a hit they always destroy themselves in a spectacular way. Capacitors on the other hand rarely explode like that. That means there must have been a (substantially) high voltage spike for the MOV to have blown up t...
by francisco.shi
Fri, 27 Nov 2020, 07:12
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 188
Views: 16200

Re: jonescg's home battery storage system

Here is mine on the day it changed over.
SOC fixed.
SOC fixed.
Screenshot_20201127-091052_SEMS Portal.jpg (299.74 KiB) Viewed 66 times
by francisco.shi
Fri, 27 Nov 2020, 07:09
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 188
Views: 16200

Re: jonescg's home battery storage system

I was going to ask you if yours suddently started showing a realistic SOC but you answered my question already.
by francisco.shi
Fri, 27 Nov 2020, 07:08
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 188
Views: 16200

Re: jonescg's home battery storage system

I had the same happen to mine. About two days ago the backup power went out and the inverter started making funny noises (I wasn't home at the time. My wife told me) then after that the SOC started looking like it should so my guess is they did a software update. About midnight yesterday it stopped ...
by francisco.shi
Wed, 25 Nov 2020, 22:26
Forum: Members Machines
Topic: Francisco's Electric Pajero
Replies: 194
Views: 25475

Re: Francisco's Electric Pajero

I got the new boards installed on the motors. There are 4 wires for control. (12v,GND, CANH and CANL) and two for power. 20201125_210955.jpg I also got the CAN bus working with the two motors. I can access each motor individually. As a test I run a program on the Arduino sending the CAN massages. It...
by francisco.shi
Wed, 25 Nov 2020, 10:02
Forum: Other
Topic: Hilux conversion
Replies: 18
Views: 284

Re: Hilux conversion

If weigh is really important you need to spend the time on the battery. All the other bits are not very significant.
The battery is the heaviest part of the whole system. So it is best to spend the time on the battery.
That pretty much rules out LiFePO cells.
So you need NCMs. Not much choice.
by francisco.shi
Tue, 24 Nov 2020, 14:17
Forum: Other
Topic: Hilux conversion
Replies: 18
Views: 284

Re: Hilux conversion

The Pajero comes with an electric booster. Not sure how it works but as soon as I turn the ignition I get brakes even while the engine is not running.
by francisco.shi
Mon, 23 Nov 2020, 09:19
Forum: Other
Topic: Hilux conversion
Replies: 18
Views: 284

Re: Hilux conversion

You may want to have a look at my conversion. It may give you some ideas about motor and batteries.
viewtopic.php?f=33&t=5721
by francisco.shi
Mon, 23 Nov 2020, 09:17
Forum: Other
Topic: Hilux conversion
Replies: 18
Views: 284

Re: Hilux conversion

A few things to consider. You can not put the electric motor directly attached to the diff because it is too heavy so you will still need to keep the tailshaft. If you swap the transfer case to a case that has the center diff in (like a transfer case out of a prado) you can keep the 4wd capability a...
by francisco.shi
Sat, 21 Nov 2020, 19:44
Forum: Members Machines
Topic: Francisco's Electric Pajero
Replies: 194
Views: 25475

Re: Francisco's Electric Pajero

Some small progress today.
I made some parts for the battery.
Cell clamps.
Cell clamps.
20201121_190943.jpg (1.5 MiB) Viewed 152 times
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by francisco.shi
Sat, 21 Nov 2020, 16:11
Forum: Other
Topic: Hilux conversion
Replies: 18
Views: 284

Re: Hilux conversion

I want to put enough battery into it to have an effective range unloaded of 400Km+. As I understand it I will need about 75kwh of battery and serious motor. My smaller ute (I kept the 4WD) gets about 25 kWh/100 km. So I'd need 100 kWh to go 400 km. Your ute is larger, so probably worse aerodynamics...
by francisco.shi
Sat, 14 Nov 2020, 16:34
Forum: Members Machines
Topic: Francisco's Electric Pajero
Replies: 194
Views: 25475

Re: Francisco's Electric Pajero

I took the motor out of the test chassis so I could install the new inverter hardware. Now I have two motors on the bench. 20201114_182326.jpg I should get the new inverter boards sometime next week. Then I can start testing the coms with two motors. I don't expect any problems. After that I will in...
by francisco.shi
Sat, 14 Nov 2020, 07:50
Forum: Members Machines
Topic: Smokinjoe's Beetle conversion
Replies: 30
Views: 1651

Re: Smokinjoe's Beetle conversion

I couldn't quite make out the number plate colour from the video. So I thought it may be WA but I thought I would ask.
by francisco.shi
Sat, 14 Nov 2020, 06:39
Forum: Members Machines
Topic: Smokinjoe's Beetle conversion
Replies: 30
Views: 1651

Re: Smokinjoe's Beetle conversion

Are you in QLD by any chance?
by francisco.shi
Sat, 14 Nov 2020, 06:33
Forum: EV Motoring
Topic: One mean rally ready Hyundai Kona EV
Replies: 3
Views: 232

Re: One mean rally ready Hyundai Kona EV

If they can get a fast battery swap EVs could potentially beat ICE cars in endurance races.
I am sure (with some money spent on R&D) a 5 sec battery swap could be done.
All it needs is some quick release clamps and a very big plug. Nothing innovative at all.