Hi,
My classic 150 (in wind mode) sometimes when the display tells me its resting and the turbine has stopped, the relay will switch on and off about every three seconds. At the same time the input volts will read 49 or so yet the turbine has stopped for some time. At other times the input voltage drops back to 34 or less and there is no problem with the relay (by relay I mean the one which connects when the Classic starts to charge. Any Ideas anyone?
Len
Len
A couple of questions if I may. What battery voltage do you have? and what is the voltage of step one and step 2 in the wind curve? I have found if I have step one below normal battery voltage it will do some weird stuff like you are seeing. I typically like to have mine wake up (Step one) around 57 or 58 volts on my 48 volt system.
Hi,
I guess thats the answer, step 1 is at 48 volts, it does seem to harvest the most energy that way , but looks like I will have to change the curve.
Regards Len
Quote from: len on September 25, 2011, 07:41:06 AM
Hi,
I guess thats the answer, step 1 is at 48 volts, it does seem to harvest the most energy that way , but looks like I will have to change the curve.
Regards Len
Hi Len. I don't know what curve you are using or if you made your own, but if you normally see the best harvest near battery voltage, that may mean that you usually have lower wind speeds. OR, maybe your turbine is wound such that it likes lower input voltages ?
What is your turbine type and the power curve you are using ?
The newest Classic software coming up (should be on the web site tomorrow), has 4 starting curves... LOW, MED1, MED2 and HIGH that create a straight line curve of various slope steepness based on your battery EQ charge set point (typically near Absorb Voltage) at the low end, and battery current limit setting at the high end. LOW would be the lowest voltages at start (left side) and stop (right side) of the curve.
This may (or may not) be helpful to you. At the moment, you have to have at least gone into the CHARGE - VOLTS menu and viewed the voltages for the MNGP so the the limits are known to the calculation. It will eventually read this information on its own of course without having to go into that menu first.
I am hoping this may be a good starting point curve for some.
boB