Hi, Technicians~
Thanks to all for the replies regarding "PV behavior when the load is a
resistor". My client wants to emulate the "Divert" function as with an old
school Bobier NDR-30 charge controller (& also seen with Mr. Katz'
Enermaxer controller from days gone by). The 2012 twist is that we'
On 5/20/2012 7:20 AM, Larry Crutcher, Starlight Solar Power Systems wrote:
boB,
I know I'm getting out of my league here but I'm so intrigued. Doesn't
a LCB device work on a feedback loop that looks at the output voltage
and current to a load and compares it to input voltage? Since we have
two
boB,
I know I'm getting out of my league here but I'm so intrigued. Doesn't a LCB
device work on a feedback loop that looks at the output voltage and current to
a load and compares it to input voltage? Since we have two fixed values here,
29Ω resistance and 4.15A PV current, how can there be a
On 5/19/2012 5:47 PM, Larry Crutcher, Starlight Solar Power Systems wrote:
Good one, Mick. Here's the way I see it:
For question one, I say yes, other than the obvious wire and
connection losses, because you are operating the cell(s) at the peak
power point.
Since a PV solar cell is a consta
Good one, Mick. Here's the way I see it:
For question one, I say yes, other than the obvious wire and connection losses,
because you are operating the cell(s) at the peak power point.
Since a PV solar cell is a constant current device and your 29 ohm load did not
change, reducing your Lab Ligh
This is a fun one...
Kent, I would think that an LCB, assuming it could output the same
current at half voltage, would not help at all. By Ohm's law, if you
drop voltage by half, the power (wattage) drops by a factor of four.
I *think* (the **'s mean I'm not certain
Mick,
In the first case you are selecting a resistor that matches the IV curve
peak power point at 1000 W/sq meter irradiance. You will indeed get 2000
watts of power into the resistor. For the second case, at 500 W/sq meter
irradiance, the PV module's IV curve has about the same peak power
v
Hi mick
I'll take a stab
First one yes would work
But the second would not as the watts don't equal the load so the resistor
isn't the correct size any more
The LCB won't help because it won't make watts but amps to help start motors
and this isn't a motor and it works in pulses which a const
Hi, Wrenchies~
Kindly educate me regarding PV behavior when the load is a resistor. Here's
a hypothetical situation:
* Eight 250 watt PV modules (60 cells per module), all connected in series
for "peak" ratings of 240 volts DC & 8.3 amps
* Lab type cell temperature & illumination so that the eig
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