Re: Overriding a library diode's internal parameter(s)
|
Hello John,
Not that it matters, but N={N}
Rs={Rser} looks right to me. What version of LTspice are you running? What exactly does the log file say?
On Thursday, April 10, 2025 at 02:09:24 PM EDT, John Woodgate <jmw@...> wrote:
I don't understand this line:
I tried adding an override of rs by ¡°N={N} Rs={Rser}¡±,
What is N={N} for? I don't think you need it: Rs is in every
instance of the diode already. Do you have a line Rser= [a
number], or perhaps a .STEPped sequence?
On 2025-04-10 18:59, Bell, Dave via
groups.io wrote:
I was working with the recently linked AD
PV Cell sim.
?
It uses a MUR460 library diode, multiple in
series, to simulate the cell/string¡¯s forward voltage.
The default series resistance seems too
high, per plotted I/V curve.
?
The diode¡¯s parameter string includes
¡°rs=0.0384¡±, and I want to vary that to adjust the curve to
the panel I want to simulate.
The model adds a multiplier to the diode,
¡°N=15¡±, which I successfully changed to ¡°N={Ns}¡± so I could
vary the number of cells.
I tried adding an override of rs by ¡°N={N}
Rs={Rser}¡±, but the second term throws an ¡°unrecognized¡±
fault.
Right-clicking the diode symbol doesn¡¯t
offer any route to setting any terms.
?
I imagine I could use a default ¡°D¡± diode
and modify all of the params, but I don¡¯t see any way
to copy the LONG string listed in ¡°Pick new diode¡±.
?
Is there a better (i.e. working) way to
override the internal params?
?
Thanks,
Dave
--
Best wishes John Woodgate RAYLEIGH Essex OOO-Own Opinions Only
If something is true: * as far as we know - it's science *for
certain - it's mathematics *unquestionably - it's religion
|
