8000 implement multi-MPPT inverter model by cwhanse · Pull Request #1085 · pvlib/pvlib-python · GitHub
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implement multi-MPPT inverter model #1085

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Merged
merged 22 commits into from
Dec 2, 2020
Merged

implement multi-MPPT inverter model #1085

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6477d7b
implement multi-MPPT inverter model
cwhanse Oct 27, 2020
1abbcbb
fix mistakes
cwhanse Oct 27, 2020
6f16ff3
fix dc_limit
cwhanse Oct 28, 2020
7fbbb46
fix mistakes
cwhanse Oct 28, 2020
e301c57
handle and test float, array, Series and tuple
cwhanse Nov 17, 2020
99019c9
float, array, Series and tuple
cwhanse Nov 17, 2020
3d4b988
test for error, api, whatsnew
cwhanse Nov 17, 2020
a471629
test coverage for float + night tare
cwhanse Nov 17, 2020
4d487aa
Merge branch 'master' of https://github.com/pvlib/pvlib-python into i…
cwhanse Nov 17, 2020
2080adb
fix error test, adjust internal if/then
cwhanse Nov 17, 8000 2020
e89719d
stickler
cwhanse Nov 18, 2020
7e4a80b
Merge branch 'master' of https://github.com/pvlib/pvlib-python into i…
cwhanse Nov 24, 2020
a0abc5a
remove float and require tuple/llst/array
cwhanse Nov 24, 2020
9bf5f1a
remove array from docstring
cwhanse Nov 24, 2020
613e287
correct condition
cwhanse Nov 24, 2020
7fae826
fix spacing
cwhanse Nov 24, 2020
699853a
put array back, edits from review
cwhanse Nov 25, 2020
7bf9218
Merge branch 'master' of https://github.com/pvlib/pvlib-python into i…
cwhanse Nov 25, 2020
dd01b74
remove test for type checking
cwhanse Nov 25, 2020
377e179
improve coverage
cwhanse Nov 25, 2020
b68b3ad
Merge branch 'master' of https://github.com/pvlib/pvlib-python into i…
cwhanse Dec 1, 2020
38cfcea
formatting and typo
cwhanse Dec 1, 2020
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put array back, edits from review
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@cwhanse
cwhanse committed Nov 25, 2020
commit 699853ac04d93831e891770abda013e96dcaf3f9
27 changes: 14 additions & 13 deletions pvlib/inverter.py
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Expand Up @@ -146,11 +146,13 @@ def sandia_multi(v_dc, p_dc, inverter):

Parameters
----------
v_dc : tuple or list of numeric
DC voltage on each MPPT input of the inverter. [V]
v_dc : tuple, list or array of numeric
DC voltage on each MPPT input of the inverter. If type is array, must
be 2d with axis 0 being the MPPT inputs. [V]

p_dc : tuple or list of numeric
DC power on each MPPT input of the inverter. [W]
p_dc : tuple, list or array of numeric
DC power on each MPPT input of the inverter. If type is array, must
be 2d with axis 0 being the MPPT inputs. [W]

inverter : dict-like
Defines parameters for the inverter model in [1]_.
Expand Down Expand Up @@ -180,17 +182,16 @@ def sandia_multi(v_dc, p_dc, inverter):
pvlib.inverter.sandia
'''

if len(p_dc) == len(v_dc):
power_dc = sum(p_dc)
power_ac = 0. * power_dc
if len(p_dc) != len(v_dc):
raise ValueError('p_dc and v_dc have different lengths')
power_dc = sum(p_dc)
power_ac = 0. * power_dc

for vdc, pdc in zip(v_dc, p_dc):
power_ac += pdc / power_dc * _sandia_eff(vdc, power_dc, inverter)
for vdc, pdc in zip(v_dc, p_dc):
power_ac += pdc / power_dc * _sandia_eff(vdc, power_dc, inverter)

return _sandia_limits(power_ac, power_dc, inverter['Paco'],
inverter['Pnt'], inverter['Pso'])
else:
raise ValueError('p_dc and v_dc have different lengths')
return _sandia_limits(power_ac, power_dc, inverter['Paco'],
inverter['Pnt'], inverter['Pso'])


def adr(v_dc, p_dc, inverter, vtol=0.10):
Expand Down
2 changes: 1 addition & 1 deletion pvlib/tests/test_inverter.py
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Expand Up @@ -115,7 +115,7 @@ def test_sandia_multi(cec_inverter_parameters):

def test_sandia_multi_length_error(cec_inverter_parameters):
vdcs = pd.Series(np.linspace(0, 50, 3))
idcs = pd.Series(np.linspace(0, 11, 3)) / 2
idcs = pd.Series(np.linspace(0, 11, 3))
pdcs = idcs * vdcs
with pytest.raises(ValueError, match='p_dc and v_dc have different'):
inverter.sandia_multi((vdcs,), (pdcs, pdcs), cec_inverter_parameters)
Expand Down
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