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Calculate/size photovoltaic stand-alone (autonomous) set

/!\ La détermination du régulateur de charge n'est pas bonne. L'incident est ouvert ici

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Result of the dimension calculation

Warning: Results are approximate, it is recommended to doublecheck with sales representative and validate your installation before buying materials.

Photovoltaic panel

Here we are looking for the power (peak, expressed in W) from solar panels to be mounted to fulfill your needs according to your geographical location. The formula is as follow :

Pp = Dn / (Yb X Yi X Rd)

  • Pp (Wp) : Peak power (goal)
  • Dn (Wh/d) : Daily needs = 240
  • Yb : electrical yield of batteries 0.85
  • Yi : electrical yield for the remaining installation (charge controller, ...) = 0.87
  • Rd : average daily radiation of the worst month in the plane of the panel (kWh/m²/d)

针对你的具体情况，结果为 :

隐藏过程

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

Photovoltaic panels produce electricity from sunlight (solar radiation).

根据输入的数据，需要406W块太阳能面板才能满足你240Wh/d的每日需求。

See, understand the procedure, the calculation

One possibility could be to have 2 panel(s) monocristalin of 240W each (?). Which extend the unit capacity to 480W

电池

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

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

针对你的具体情况，结果为 :

隐藏过程

盖子 = (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.

See, understand the procedure, the calculation

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

充电控制器

充电控制器位于电池和面板之间，它的作用就是根据面板上的信息来处理电池的充电.

A wiring hypothesis would be to have a MPTT 250/65 type charge controller(?) on which would be connected 2 serialized panels

类型为MPTT 250/65的充电控制器，含有12V蓄电池，允许：

  • 860W最大面板功率：
    • 总计为2 240W面板，我们可以达到 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 (?)

Note: serialization multiplies voltage (V) and paralleling multiplies the intensity (I)

所有这些特性说明都在产品的技术手册中。你能在Export模式下自定义充电控制器的参数。

隐藏过程

查看，理解过程

布线图

A wiring diagram was established according to panel/charge controller/battery hypothesis :

转换器

The converter goal is to transform batteries DC current (here 12V) in AC current usable for standard devices. You need a converter able to deliver the 10W max electric power you need.

An hypothesis would be to choose a 12/180 type converter that goes up to 175W max power with possible peaks at 350W.

电池控制器

推荐使用电池控制器来检查蓄电池充电状态.

布线

为了避免电力损失，线的选择(计算)非常重要。 :

另外一个也是更全面的导线计算器可以查看这里：sigma-tec。

预算

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.

支持，贡献

如果这个软件对你有所帮助并且/或者你想表示感谢 :

概要 (HTML/BBCode)

你的消耗量 :

这是在调整大小中最重要的步骤。 如果你不知道这个值的话，打开每日消耗量计算器

Wh/d
W ?

地理位置

  • 地图
  • 手动

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

纬度 : 经度 :

Solar irradiation data is collected on PVGIS .

kWh/m²/j

Sizing of photovoltaic panels

(?)
(?)

I use a solar tracker on the 2 axes

你可以详细说明你面板的技术指标 :

  • W
  • V
  • A

Battery plant sizing

这个软件已为铅蓄电池预设 (AGM/Gel/OPvS/OPzV)

V (?)
%
(?)

你可以详细说明你的电池技术指标 :

  • Ah
  • V
%
%

充电控制器

你可以详细说明你的充电控制器的技术指标 :

  • W
  • V
  • A
%
%

布线

Considering solar flexible copper wiring.

m
m
ohm
%
A/mm²