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Post by spiderbob on Dec 23, 2015 19:38:07 GMT -8
OK, another idea. Please correct if someone knows more, which I'm sure someone does  OK, In the hotter months of the deserts of Southern California, it can get pretty hot 112 is not uncommon. So I'm thinking sense hot weather plays a bad part for solar energy (it reduces it) higher voltages are better for us, during this time. So I'm thinking of running my wiring of the 4 100w panels in series during the summer to up the voltage and during the rest of the year re-wire for parallel where I get higher amps. Does anyone see anything wrong with the analogy?
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Post by spiderbob on Dec 23, 2015 22:49:50 GMT -8
Wow, I think I beginning to understand it now It is the purpose of the MPPT system to sample the output of the PV cells and apply the proper resistance (load) to obtain maximum power for any given environmental conditions which includes cell temperature. For any given set of operational conditions, cells have a single operating point where the values of the current and Voltage of the cell result in a maximum power output. This is the Maximum Power Point of the MPPT controller. It will then fluctuate these parameters and still give within reason enough charge rate. It's when at it's worse the hottest days of summer that it works the hardest. This is why I had been getting a lower charge rate, when my mind was telling me it should be the strongest (hot direct sunlight) wrong, you get the best charging during the winter months when the cells are much cooler, which is actually better, because those are the shorter days when you need maximum charge. OK, I can go to bed now and think about this.
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Post by rockhillwill on Dec 25, 2015 5:30:02 GMT -8
Hey, Bob, thanks for the question and the answer. It cleared up a little bit of my own questioning. Thanks.
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OK, In the hotter months of the deserts of Southern California, it can get pretty hot 112 is not uncommon. So I'm thinking sense hot weather plays a bad part for solar energy (it reduces it) higher voltages are better for us, during this time. So I'm thinking of running my wiring of the 4 100w panels in series during the summer to up the voltage and during the rest of the year re-wire for parallel where I get higher amps. Does anyone see anything wrong with the analogy?
