BIDJANGA 10 / 14 / 2021 UPDATE

1) WEATHER TRENDS  
Last week, we had a 3 days discontinued sunlight in Yaounde ; as we are now in the rainy season, we expect better sunlight around  november 30,2021 as the dry season ( sunlight everyday ) will take over. While waiting for the good season for our  ISEC business, we  are :
a) designing new ISECS ( although we are delayed by chinese suppliers to deliver us ordered goods by DHL )
b) placing ISEC adverts over the Internet and local  medias ;
c) recruiting marketing representatives in Cameroon and abroad ( we've just got a country representative from  the Democratic Republic of Congo ; his name is Mr Maurice Bahongoli and he lives in Lumumbashi city ; he is an agricultural engineer .RD. Congo is the biggest african french speaking country.
In Cameroon, we already have two regional representatives ( one from the South, another from the far north of Cameroon ).

2) ISEC RECIPES
this weekend, we've cooked maize along with plums ( a tropical fruit -see pictures below ) ; all the food was boiled although the sky was cloudy.
And this cooking time helpded  us to experience something good  :
a) we've connected 4 panels of 100w /12v in series and parallel to obtain a 200 watts power in 36-40 volts  ; after connecting our 400w ISEC on the panels, nothing was getting hot.
b) we've changed all, by connecting the 4 panels in parallel only , to obtain a gross amount of 400 watts current in 12 volts ; connected all to our 3.2 ohms ISEC ; the burner got hot and we  boiled our maize and plums.
Great !


Best Regards

Mr BIDJANGA BILOA
ISEC Cameroon Team Coordinator
www.sunrise.mozello.com

When doing those experiments, it would be great to know Voltage and Current under load (When connected to the ISEC).
Then you can quickly see, how much power the 2S 2P (2series, 2 parallel) configuration produces over the 4P configuration.
Then it is way easier to figure out, why the 2S 2P configuration did not provide enough power to cook, when it was cloudy.
Probably the PV-Voltage was pulled down by the wire too much and the panels did not opperate in a optimal voltage.

Power = Voltage * Current

In strong sun, you would get way more power with 2S 2P over 4P.


Best regards,
Raphael

Hi Raphael,
Many Thanks for your advices and information.
Regards
Bidjanga