Calculate/size photovoltaic stand-alone (autonomous) set

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Gevolg van die dimensie berekening

Waarskuwing: Resultate is by benadering, dit word aanbeveel om te controleert met verkope verteenwoordiger en bekragtig jou installasie voor die aankoop van materiaal.

Fotovoltaïese paneel

Hier is ons op soek na die krag (piek, uitgedruk in W) van sonkrag panele gemonteer word om te voldoen aan jou behoeftes volgens jou geografiese ligging. Die formule is soos volg :

Pp = Dn / (Yb X Yi X Rd)

Pp (Wp) : Piek krag (doel)
Db (Wh/d) : Daaglikse behoeftes = 240
Ob : elektriese opbrengs van batterye 0.85
Oi : elektriese opbrengs vir die res van die installasie (aanklag kontroleerder, ...) = 0.87
Rd : average daily radiation of the worst month in the plane of the panel (kWh/m²/d)

In jou geval, is die resultaat is :

Steek die proses

Pp = 240 / (0.85 * 0.87 * 0.8) = 406 W

Fotovoltaïese panele produseer elektrisiteit van die son (die son).

Volgens aangegaan data,406W van die sonpaneel is nodig om te voldoen aan jou daaglikse behoeftes van 240Wh/d.

Sien, verstaan die proses, die berekening

Een moontlikheid kan wees om2paneel(s)monocristalinvan240Welke (?). Wat die uitbreiding van die eenheid kapasiteit om 480W

Batterie

We are looking here for the nominal capacity expressed in ampere per hour (Ah, given in C10)

Cap = (Dn x Aut) / (DD x U)

Cap (Ah) : Nominal capacity of batteries (in C10))
Db (Wh/d) : Daaglikse behoeftes = 240
Aut: Autonomous days amount (no sun) = 4
DD (%) : Maksimum koers ontslag = 30
U (V) : Finale battery spanning plant = 12

In jou geval, is die resultaat is :

Steek die proses

Cap = (240 x 4) / (0.3 x 12) = 267 Ah

Batteries are used to store electric energy produced by the panels. You will need a battery plant of 267 Ah at 12 V.

Sien, verstaan die proses, die berekening

A wiring hypothesis would be to have 2> GEL 12V 150Ah (165Ah en C20) type batteries, which increases the plant capacity up to 300Ah

1 serialized batteries (for a voltage of 12V) on 2 parallel(s) (for a capacity of 300Ah)(?)

Charge controller

The charge controller stands between batteries and panels, its role is to handle batteries charge depending on what the panels can provide.

A bedrading hipotese sou wees om'nMPTT 250/65tipe charge controller(?) wat sou verbind word 2 serialized panele

'n tipeMPTT 250/65 beheer kontroles, met'n12Vbattery plant, kan :

860Wmax paneel krag :

Met'n totaal van 2 240W paneel(s), ons by 480W (?)

250V max PV voltage of open circuit :

With 2 serialized panel(s) of 43V of (Voc) voltage and a 20% security margin, we reach 103V (?)

30A max PV short-circuit current :

With 1 parallel panel(s) having 7A intensity (Isc) and a 10% security margin, we reach 7A (?)

Let wel: serialisasie vermeerder spanning (V) en parallel met vermeerder die intensiteit (I)

Al hierdie eienskappe is beskikbaar in die produk se tegniese vel. Jy kan aanpas om jou charge controller eienskappe in Uitvoer af.

Steek proses

Sien, verstaan die proses

Kabel diagram

'n bedradingsdiagram gestig is volgens die paneel/charge controller/battery hipotese :

Converter te hê

Die converter te hê doel is om te transformeer batterye DC huidige (hier 12V) in AC huidige bruikbaar vir die standaard toestelle. Wat jy nodig het'n converter in staat is om te lewer 10W max elektriese krag wat jy nodig het.

'n hipotese sou wees om'n van te kies 12/180 tipe converter wat gaan tot 175W max power met moontlike pieke by 350W.

Battery kontroleerder

Dit word aanbeveel om'n battery controleur in orde om te gaan battery plant beheer staat.

Die bedrading

Draad afdeling keuse(bereken)is belangrik ten einde te verhoed dat elektrisiteit lossess :

Between panels and charge controller, for a distance of 8m, a 2mm² section cable is recommended (see, understand the procedure)

Steek proses

The formula to calculate the wire section in order to avoid loss is :

S = Rho x L x I / VL

S (mm²) : Wire section
Rho (ohm) : Wire resistivity (0,017ohm for copper)
L (m) : back and forth wire length
I (A): Intensity (here panel intensity multiplied by the number of parallel)
VL (V) : admitted wire level voltage loss (1% of voltage)

(panels voltage * number of series) * 1/100

In our case it gives :

S = 0.019 x (8x2) x 7 / 0.86 = 2.47mm²

Nearest wire section suggested : 2,5mm², approximate cost 8€

Between charge controller and batteries, for a 1.5m distance, a wire section of 19mm² is recommended (see, understand the procedure)

Hide process

The formula to calculate the wire section in order to avoid loss is :

S = Rho x L x I / VL

S (mm²) : Wire section
Rho (ohm) : Wire resistivity (0,017ohm for copper)
L (m) : back and forth wire length
I (A): Intensity (here the power of the panels / the voltage of the battery bank)
VL (V) : admitted wire level voltage loss (1% of voltage)

Batteries voltage, i. e. 12V * 1/100

In our case it gives :

S = 0.019 x (1x2) x (480 / 12) / 0.12 = 19mm²

Nearest wire section suggested : 25mm², approximate cost 8€

Another and more complete wire section calculator is avalaible at sigma-tec.

Budget

Fotovoltaïese paneel : between 312€ and 528€ (?)
Batterie : between 648€ and 1022€ (?)
Charge controller : approximately 700€
Converter te hê : between 70€ and 85€ (?)
Battery kontroleerder : approximately 150€
Wiring : approximately 17€

Which brings to a total budget between 1897 and 2502€. Cost of panels support, wire, wire terminal and protection elements (fuse, battery cut-off, ...) is not included.

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Summary (HTML/BBCode)

Your degree of knowledge in photovoltaics :

Your consumption :

This is the most important step for sizing. If you don't know this value go to daily needs calculator

Jou daaglikse elektriese behoeftes : Wh/d

Jou nodig het in die maksimum elektriese krag : W ?

Geographical location

Map
Manual

Click on the map to set your position and deduce solar resource :

Latitude : Longitude :

Solar irradiation data is collected on PVGIS .

Enter the mid value of solar radiation for the worst month and panel plane (inclination) : kWh/m²/j

Sizing of photovoltaic panels

Incline of the panel : (?)

Orientation of the panels : (?)

I use a solar tracker on the 2 axes

Desired autonomous :

Select period :

Panel template :

Preferred panel technology :

You can detail the technical specifications of your panel :

Max power (Pmax) : W
Open circuit voltage (Voc) V
Short-circuit current (Isc) A

Electrical yield of batteries :

Electrical yield for the remaining installation (charge controller,...) :

Battery plant sizing

This software is preset for lead batteries (AGM/Gel/OPvS/OPzV)

Autonomous days amount :

Finale battery spanning plant : V (?)

Discharge level limit : %

Battery model (expressed in C10) : (?)

Preferred battery technology :

You can detail the technical characteristics of your battery :

Capacity (C10) : Ah
Voltage : V

Charge current max capacity : %

Discharge current max capacity : %

Charge controller

Charge controller model :

You can detail the technical characteristics of your charge controller :

Batteries final voltage : V
Maximum power panel : W
Open circuit max PV voltage : V
PV current max. (power / voltage) : A

Panels Isc (short-circuit current) security margin : %

Panels Voc (open circuit voltage) security margin : %

Wiring

Considering solar flexible copper wiring.

One-way distance between panels and charge controller : m

One-way distance between charge controller and batteries : m

Conductor resistivity (rho) mm²/m : ohm

Tolerable voltage drop : %

Ratio in order to prevent wire heating : A/mm²

Why it's not possible to click on Start the calculation ?

Calculate/size photovoltaic stand-alone (autonomous) set

Gevolg van die dimensie berekening

Fotovoltaïese paneel

Batterie

Charge controller

Kabel diagram

Converter te hê

Battery kontroleerder

Die bedrading

Budget

Support, contribute

Summary (HTML/BBCode)

Your consumption :

Geographical location

Sizing of photovoltaic panels

Battery plant sizing

Charge controller

Wiring

Support CaclPvAutonome