Search found 22 matches

by David57
Sun, 02 Jun 2019, 17:12
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

Modern Meanwell AC to DC converter are a bad way for this application, I read 0,54A without any charge, and after one hour, the side become warm. about 35 to 40°C with 20°C ambiant temp. Fans always on. I send it back to store. I trying now with 600VA toroïdal transformer. I can plug and unplug to n...
by David57
Fri, 31 May 2019, 03:22
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

Yes, actually, the circuits are made so :
3 phases that arrived
each phase go on one 10A light circuit that powered 8x10A light circuit.
each phase go on one 16A circuit that powered 16x16A circuits for plugs and other devices.
The 3 phases are equalized.
by David57
Wed, 29 May 2019, 19:01
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

Just one 48VDC line where all solar current are added. The independent inverters or parallel inverters, is more to be free to change one by other without staying in the same model, in 5 or 10 years, i'm not sure to find a compatible model that work with other. The grid stay so it's never a problem t...
by David57
Wed, 29 May 2019, 12:20
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

The loads specs are always show, but it's not the normally usage of inverter, generally 1 to 10% load is a normal usage of 90% of time. 3 x 5kVA inverters in parallel take 150w to show time on oven in kitchen ! Is standby mode compatible with electronics devices ? For lights and resistiv charge is o...
by David57
Tue, 28 May 2019, 12:59
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

That's a maximum power capacity, I've never use the 12kW that grid permit. Many possibility for inverters, independant on 2 or 3 output lines or working in parallel on same line. How are working 3 inverters in parallel ? For 300W, each give 100W or one give 300 and 2 are on standby ? I finally take ...
by David57
Fri, 24 May 2019, 20:32
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

If the working voltage must be change, I prefer go with upper voltage than a lover voltage to not increase current and reduce the size on cable.
by David57
Fri, 24 May 2019, 18:43
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

Hi, I have now the 32 solar panel, each 310W. I try now to first regulate each panel at 28-29VDC, so i can have 16 strings of 2 panel, or one of 16// + 16//. The max power that regulator dissipate is from 0 to 35W, depending of solar power, current, panel temp. At 10A, voltage isn't very higher 28-2...
by David57
Tue, 14 May 2019, 20:31
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

Resistor directly on solar panel won't run correctly.
I have in past a water heater 2000W/230VAC with 26 ohm resistor, connected on 160V/6,5A string solar panel.
At 6A, it's work fine, i receive 1kw.
Little less sun, at 5A, it's fall to 650W
At 4A, around 400W
At 3A, 230W
2A, 100W, 1A, 26W.
by David57
Tue, 14 May 2019, 15:01
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

But solar power and needed current are totally unpredictable, with big jump, such oven, electric plate (all in the kitchen...), washing...
by David57
Tue, 14 May 2019, 02:28
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

Making a regulator with a darlington power transistor and a resistor in serial with zener is not a problem, power dissipation must be see in practice. With that, the Ampere output still the same, only voltage is reduced. If power is not enough to answer, voltage fall down to the AC/DC converter leve...
by David57
Sat, 11 May 2019, 14:52
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

Hi, I try to not thinking the system as a on grid system. Here, the max solar power is not the max usable power, but is here to cover more days of the year. If all panel are under full sun on summer, my water is hot, I don't need warming, maybe a clim, fridge, computer, just need in continuous 1 or ...
by David57
Mon, 06 May 2019, 19:56
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

Here we can see how greeat are "The Accords de Paris" COP are just a joke. Industrials drive the world. And financials benefits give the direction. Wednesday, i receive a first part of 32x310Wc panels, for beginning and testing how i arrange and connect it. I reuse 3 toroidal 230V/50V transformers w...
by David57
Fri, 03 May 2019, 19:53
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

The law say "no" for more than 3kWc, one the same surface. The law say nothing about many smaller surface, so... I can put a small garden house from 1x1m on each coin of property, but not one of 2x2m without asking. Same case. - Two panels in series, one voltage limiter, one DC output, for each pair...
by David57
Thu, 02 May 2019, 19:09
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

See this page for selling prices : https://www.picbleu.fr/page/tarifs-d-achat-de-l-electricite-panneaux-solaires-photovoltaiques The market is very closed. I must try if it is possible to instantly switching from one source to other for oven or electrical plate, with two triac at the moment of the t...
by David57
Thu, 02 May 2019, 18:26
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

First, I wouldn't operate with a unique 15KW power source, I see 3 possibility for this moment : - One panel, one mppt boost converter, one DC output, for each panel. - Two panel in serial, one voltage limiter, one DC output, for each paar. - 9 panel for exemple, one MPPT buck converter, one DV cout...
by David57
Wed, 01 May 2019, 19:27
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

It's a good way. But how can I know how many unused solar power is available ? And is solar MPPT price correct vs more solar panel with simple PWM or just one transistor that absorb the excessive power on each panel, it's like a pig, but we speaking from "free" power. Studer make very good devices, ...
by David57
Mon, 29 Apr 2019, 14:27
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

I have 3KWc for selling at 0,65€/KW and 6KWc at 0,46€/KW, that product 2600 to 3000KW and 5300 to 5800KW respectively. 3KWc product max by a day 18KW on summer and 3 KW on winter, but can be 0kw during a day or exceptionnaly 2 or 3 week wenn snowing, I have see that just one year. Based on the last ...
by David57
Sun, 28 Apr 2019, 17:35
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Re: Offgrid solar project

You can see a first plan on what i want to do on attached file. Diodes can only routing DC current. I already have my old Studer 3548SI inverter, that is just an inverter without charger. I use it before connected on grid. Solar in France is just a big joke, i have many offer for 6kwc with a wooden ...
by David57
Sun, 28 Apr 2019, 01:09
Forum: Renewable Energy and Storage (Non-EV)
Topic: Offgrid solar project
Replies: 65
Views: 1745

Offgrid solar project

Hi, I have a project of photovoltaic installation in France. Without complicated authorisation, we can't send current on grid, on heart we can not do the same thing than on house, very complicated. I have a tri phased 12KVA counter at home, but 9KVA is enought on a monophased installation. I think t...
by David57
Thu, 18 Apr 2019, 19:13
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)
Replies: 94
Views: 5387

Re: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)

Thank you for answer, the 5048MG is not the best for reduce the bill. 5048MK appear to be more appropriate. I don't see on specs if is it possible to use it without battery. The circuit breaker on counter is a 12kW tri, so if i load more than 5kW on inverter, the circuit breaker don't like to switch...
by David57
Thu, 18 Apr 2019, 15:34
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)
Replies: 94
Views: 5387

Re: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)

Hi everybody, David from France, new on this forum. I see to make a DIY photovoltaic install and have question about the solution choice. I have tri-phase at home, so i want to make a tri-phase photovoltaic installation. I begin without battery. I think to buy 3 PIP-5048MG with 42 solar panel 32V/9....