ivcurves.precise.max_power_pt_finder#

ivcurves.precise.max_power_pt_finder(il, io, rs, rsh, n, vth, ns, atol)#

Calculates power at maximum power point.

Parameters:

  • il (numeric) – Light-generated current \(I_L\) (photocurrent) [A]

  • io (numeric) – Diode saturation \(I_0\) current under desired IV curve conditions. [A]

  • rs (numeric) – Series resistance \(R_s\) under desired IV curve conditions. [ohm]

  • rsh (numeric) – Shunt resistance \(R_{sh}\) under desired IV curve conditions. [ohm]

  • n (numeric) – Diode ideality factor \(n\)

  • vth (numeric) – Thermal voltage of the cell \(V_{th}\) [V] The thermal voltage of the cell (in volts) may be calculated as \(k_B T_c / q\), where \(k_B\) is Boltzmann’s constant (J/K), \(T_c\) is the temperature of the p-n junction in Kelvin, and \(q\) is the charge of an electron (coulombs).

  • ns (numeric) – Number of cells in series \(N_s\)

  • atol (float) – The returned voltage will be at most atol from the voltage that yields the true maximum power of the given IV curve.

Returns:

(max_voltage, max_current, max_power) – A good approximation for the voltage \(V\), current \(I\), and power \(P\) of the maximum power point of the given IV curve.

Return type:

tuple of mpmath floats