pvlib.singlediode.bishop88_v_from_i

pvlib.singlediode.bishop88_v_from_i(current, photocurrent, saturation_current, resistance_series, resistance_shunt, nNsVth, d2mutau=0, NsVbi=inf, method='newton')[source]

Find voltage given any current.

Parameters

  • current (numeric) – current (I) in amperes [A]

  • photocurrent (numeric) – photogenerated current (Iph or IL) in amperes [A]

  • saturation_current (numeric) – diode dark or saturation current (Io or Isat) in amperes [A]

  • resistance_series (numeric) – series resistance (Rs) in ohms

  • resistance_shunt (numeric) – shunt resistance (Rsh) in ohms

  • nNsVth (numeric) – product of diode ideality factor (n), number of series cells (Ns), and thermal voltage (Vth = k_b * T / q_e) in volts [V]

  • d2mutau (numeric, default 0) – PVsyst parameter for cadmium-telluride (CdTe) and amorphous-silicon (a-Si) modules that accounts for recombination current in the intrinsic layer. The value is the ratio of intrinsic layer thickness squared \(d^2\) to the diffusion length of charge carriers \(\mu \tau\). [V]

  • NsVbi (numeric, default np.inf) – PVsyst parameter for cadmium-telluride (CdTe) and amorphous-silicon (a-Si) modules that is the product of the PV module number of series cells Ns and the builtin voltage Vbi of the intrinsic layer. [V].

  • method (str) – one of two optional search methods: either 'brentq', a reliable and bounded method or 'newton' which is the default.

Returns

voltage (numeric) – voltage (V) at the specified current (I) in volts [V]