def test_fit_desoto_failure():
with pytest.raises(RuntimeError) as exc:
sdm.fit_desoto(v_mp=31.0,
i_mp=8.71,
v_oc=38.3,
i_sc=9.43,
alpha_sc=0.005658,
beta_voc=-0.13788,
cells_in_series=10)
assert ('Parameter estimation failed') in str(exc.value)
def test_fit_desoto():
result, _ = sdm.fit_desoto(v_mp=31.0, i_mp=8.71, v_oc=38.3, i_sc=9.43,
alpha_sc=0.005658, beta_voc=-0.13788,
cells_in_series=60)
result_expected = {'I_L_ref': 9.45232,
'I_o_ref': 3.22460e-10,
'R_s': 0.297814,
'R_sh_ref': 125.798,
'a_ref': 1.59128,
'alpha_sc': 0.005658,
'EgRef': 1.121,
'dEgdT': -0.0002677,
'irrad_ref': 1000,
'temp_ref': 25}
assert np.allclose(pd.Series(result), pd.Series(result_expected),
rtol=1e-4)