Battery Pack Charger Connection

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esbro
Posts: 34
Joined: Tue Jan 25, 2011 6:21 pm

Re: Battery Pack Charger Connection

Postby esbro » Tue Apr 02, 2019 7:51 pm

Hi Grumpy-b, I have been doing a bit more research into this subject and, it seems that the 3 charger idea will work.
I've just come across this website (link below) which shows (better than I have been doing) what I meant about a 4 wire 3 phase (star) system

This is an extract:
"If a balanced symmetrical load is connected across three phase voltage system in parallel, then the three currents will flow in the neutral wire which quantities would be same, but they would be differ by 120° (out of phase), hence the vector sum of these three currents = 0.
i.e. IR + IY + IB = 0  "

Even with only two chargers in use, the phases used are still out of phase by 120 deg. reducing the apparent current.
This 4 wire system is the one used in domestic distribution from the 3 phase + neutral cable in the street to each house's single phase supply.

Any comments welcome. ..... Steve

Link - https://www.electricaltechnology.org/20 ... rrent.html

mark77a
Posts: 2
Joined: Thu Jul 23, 2009 4:30 pm

Re: Battery Pack Charger Connection

Postby mark77a » Thu May 09, 2019 9:11 am

Fascinating discussion gents ! Thanks for filling another gap in my knowledge.

May I add a further question: does anyone know where to find the 'Handshake' signals ? and onboard chargers that are capable of such ?

I'm just planning a conversion and like the OP would like to select an on board charger that I can use with public chargers (eg say 32amp, podpoint at local supermarket) . I'm guessing this will need a more intelligent on board charger with CANbus controls ?

Other components already bought:
Hyper9 AC motor, ACX1 controller etc
5 x Tesla Modules (c 120v)

Thanks in advance,
Mark


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