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@ -9,38 +9,36 @@ A project to add solar power to the VW T3 Joker
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# Conditions
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Energy sources
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**Energy sources**
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- Starter battery
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- Leasure battery
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- Engine
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- 220 input
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Energy consumtion
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**Energy consumtion**
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- Pentry fuse 16A
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- Fridge 85W
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- Indicator display (oklart men extremt lite. Letar efter källa)
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- Waterpump (pentry)(12V 2A => 12*2=24W)
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- Fridge fan (0,6W)
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Other stuff
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**Other stuff**
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- Unsure about the fuse directly at the battery but should use one 8A
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- Battery charger type LG 20
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# The panel
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**Specs**
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- 110 W
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- 18V rated voltage
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-
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-
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# The MPPT
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Specs
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**Specs**
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- ESP32
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- Diod preventing the protective diods in the box at the back of the panel breaks if the panel is connected with the wrong polarityand preventing old/bad panels to discharge the battery when it is dark. Stuges test shows that this diod will be what limits the effect/power the chager can handle. With a load at 6A he measured 113 °C on the outside of the diod. The it is close to the max temperature (150 °C) on the inside. At a load at 6A he measured 100W in, the used panel in this project is 110W. This is working since the panel never produces 100%. But it is close to the limit if the chager is loaded at 6A.
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Testprotocols
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- Stuge 10 July (Stuge)
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**Testprotocols & measurements**
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Stuge 10 July (Stuge)
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```
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OpenMPPT
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@ -81,7 +79,7 @@ In 20V 4.84A Out 6A 14.15V 84.88W D6 Tterm=104.4°C N4
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10. Jul., 09:26
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```
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Elektra resources and similar
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**Elektra resources and similar**
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- https://github.com/ISEMS/ISEMS-ESP32
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- https://media.ccc.de/v/36c3-oio-166-ff-esp32-openmppt-new-freifunk-isems-mppt-solar-controller-with-integrated-wifi
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- https://www.isems.de/
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@ -89,10 +87,9 @@ Elektra resources and similar
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- https://media.ccc.de/v/35c3oio-63-independent-solar-energy-mesh-system
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# The current setup
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Cables & connetors
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**Cables & connetors**
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- Red/Black connectors (Powerpole 75) not water proof
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- Panel connectors (MC4/H4) cannot hang unconnected in moist!
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# Dictionary
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Rated voltage - Nominell spänning / märkspänning
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Alternator - Lichtmachine - Generator
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