diksha.k
Member level 5
coming back to solar:
I use irfz44n mosfet and as per datasheet it suggests that : 10V should sufficiently turn on the mosfet.
Now applying 18V externally (two 9v aa batteries) could actually completely turn the mosfet on. But, the voltage doubler circuit i am using provides around 11V to turn on mosfet and people who have worked with such drivers seem to have satisafctory results.
firstly i checked with vmpp voltage it was around 14.9V for 21V oc voltage.
Then, i wrote algorithm sensing the panel voltage (i would be perfoming experiment both ways i.e one that u suggested and other is finding v*i method and compare feasiblity of both) i.e keeping panel voltage at vmpp.
In this case,
say if i set vmpp to 19V(example) then panel voltage was always maintained at 19V(+/-0.2V) irrespective of load variations then, i carried same for 18V,--17V--and below 17V it started giving problem with 16V,15V when i tried panel voltage just sat at 17.72V no variations visible what could be the reason?
I am attaching my toroid core inductor built it has three different windings one for : 75W, 110W,350W on same core but, "any-one" used at a time.
I use irfz44n mosfet and as per datasheet it suggests that : 10V should sufficiently turn on the mosfet.
Now applying 18V externally (two 9v aa batteries) could actually completely turn the mosfet on. But, the voltage doubler circuit i am using provides around 11V to turn on mosfet and people who have worked with such drivers seem to have satisafctory results.
firstly i checked with vmpp voltage it was around 14.9V for 21V oc voltage.
Then, i wrote algorithm sensing the panel voltage (i would be perfoming experiment both ways i.e one that u suggested and other is finding v*i method and compare feasiblity of both) i.e keeping panel voltage at vmpp.
In this case,
say if i set vmpp to 19V(example) then panel voltage was always maintained at 19V(+/-0.2V) irrespective of load variations then, i carried same for 18V,--17V--and below 17V it started giving problem with 16V,15V when i tried panel voltage just sat at 17.72V no variations visible what could be the reason?
I am attaching my toroid core inductor built it has three different windings one for : 75W, 110W,350W on same core but, "any-one" used at a time.