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# -*- coding: utf-8 -*-
"""Chamberline-Kim model functions."""
import math
from opem.Params import Chamberline_InputParams as InputParams
from opem.Params import Chamberline_OutputParams as OutputParams
from opem.Params import Chamberline_Params_Default as Defaults
from opem.Static.Amphlett import Efficiency_Calc, Power_Calc, VStack_Calc, PowerStack_Calc, Power_Thermal_Calc, Power_Total_Calc, Linear_Aprox_Params_Calc, Max_Params_Calc
import opem.Functions
from opem.Params import Chamberline_Description, Overall_Params_Max_Description, Overall_Params_Linear_Description, Report_Message
import os
def Vcell_Calc(E0, b, R, m, n, i, A):
"""
Calculate cell voltage.
:param E0: open circuit voltage [V]
:type E0: float
:param b: Tafel's parameter for the oxygen reduction [V]
:type b: float
:param R: resistance [ohm.cm2]
:type R: float
:param m: diffusion's parameters [V]
:type m: float
:param n: diffusion's parameters [V]
:type n: float
:param i: cell operating current [A]
:type i: float
:param A: active area [cm2]
:type A: float
:return: cell voltage [V]
"""
try:
J = i / A
result = E0 - b * math.log(J) - R * J - m * math.exp(n * J)
return result
except (TypeError, OverflowError, ValueError):
print(
"[Error] Vcell Calculation Error (E0:%s, b:%s, R:%s, m:%s, n:%s, i:%s, A:%s)" %
(str(E0), str(b), str(R), str(m), str(n), str(i), str(A)))
def Static_Analysis(
InputMethod=opem.Functions.Get_Input,
TestMode=False,
PrintMode=True,
ReportMode=True,
Folder=os.getcwd()):
"""
Run Chamberline-Kim static analysis.
:param InputMethod: input function or input test vector
:type InputMethod: dict or Get_Input function object
:param TestMode: test mode flag
:type TestMode: bool
:param PrintMode: print mode control flag (True : print outputs)
:type PrintMode: bool
:param ReportMode: report mode control flag (True : generate report)
:type ReportMode: bool
:param Folder: output folder address
:type Folder: str
:return: result as dict
"""
OutputFile = None
CSVFile = None
Warning1 = False
Warning2 = False
I_Warning = 0
Overall_Params_Max = {}
Overall_Params_Linear = {}
Simulation_Title = "Chamberline-Kim"
try:
if PrintMode:
print("###########")
print(Simulation_Title + "-Model Simulation")
print("###########")
OutputParamsKeys = sorted(OutputParams)
Output_Dict = dict(
zip(OutputParamsKeys, [None] * len(OutputParamsKeys)))
if not TestMode:
Input_Dict = InputMethod(InputParams, params_default=Defaults)
else:
Input_Dict = InputMethod
Input_Dict = opem.Functions.filter_default(
input_dict=Input_Dict, params_default=Defaults)
if PrintMode:
print("Analyzing . . .")
Name = Input_Dict["Name"]
if ReportMode:
OutputFile = opem.Functions.Output_Init(
Input_Dict, Simulation_Title, Name, Folder)
CSVFile = opem.Functions.CSV_Init(
OutputParamsKeys,
OutputParams,
Simulation_Title,
Name,
Folder)
HTMLFile = opem.Functions.HTML_Init(Simulation_Title, Name, Folder)
IEnd = Input_Dict["i-stop"]
IStep = Input_Dict["i-step"]
Precision = opem.Functions.get_precision(IStep)
[i, IEnd, IStep] = opem.Functions.filter_range(
Input_Dict["i-start"], IEnd, IStep)
I_List = []
Efficiency_List = []
Power_List = []
Vstack_List = []
Power_Thermal_List = []
while i < IEnd:
try:
I_List.append(i)
Output_Dict["Vcell"] = Vcell_Calc(
Input_Dict["E0"],
Input_Dict["b"],
Input_Dict["R"],
Input_Dict["m"],
Input_Dict["n"],
i,
Input_Dict["A"])
[Warning1, I_Warning] = opem.Functions.warning_check_1(
Output_Dict["Vcell"], I_Warning, i, Warning1)
Warning2 = opem.Functions.warning_check_2(
Vcell=Output_Dict["Vcell"], warning_flag=Warning2)
Output_Dict["PEM Efficiency"] = Efficiency_Calc(
Output_Dict["Vcell"])
Output_Dict["Power"] = Power_Calc(Output_Dict["Vcell"], i)
Output_Dict["VStack"] = VStack_Calc(
Input_Dict["N"], Output_Dict["Vcell"])
Vstack_List.append(Output_Dict["VStack"])
Efficiency_List.append(Output_Dict["PEM Efficiency"])
Output_Dict["Power-Stack"] = PowerStack_Calc(
Output_Dict["Power"], Input_Dict["N"])
Output_Dict["Power-Thermal"] = Power_Thermal_Calc(
VStack=Output_Dict["VStack"], N=Input_Dict["N"], i=i)
Power_List.append(Output_Dict["Power-Stack"])
Power_Thermal_List.append(Output_Dict["Power-Thermal"])
if ReportMode:
opem.Functions.Output_Save(
OutputParamsKeys,
Output_Dict,
OutputParams,
i,
OutputFile,
PrintMode)
opem.Functions.CSV_Save(
OutputParamsKeys, Output_Dict, i, CSVFile)
i = opem.Functions.rounder(i + IStep, Precision)
except Exception as e:
print(e)
i = opem.Functions.rounder(i + IStep, Precision)
if ReportMode:
opem.Functions.Output_Save(
OutputParamsKeys,
Output_Dict,
OutputParams,
i,
OutputFile,
PrintMode)
opem.Functions.CSV_Save(
OutputParamsKeys, Output_Dict, i, CSVFile)
[Estimated_V, B0, B1] = opem.Functions.linear_plot(
x=I_List, y=Vstack_List)
Linear_Approx_Params = Linear_Aprox_Params_Calc(B0, B1)
Max_Params = Max_Params_Calc(Power_List, Efficiency_List, Vstack_List)
Power_Total = Power_Total_Calc(Vstack_List, IStep, Input_Dict["N"])
Overall_Params_Linear["Pmax(L-Approx)"] = Linear_Approx_Params[0]
Overall_Params_Linear["V0"] = B0
Overall_Params_Linear["K"] = B1
Overall_Params_Linear["VFC|Pmax(L-Approx)"] = Linear_Approx_Params[1]
Overall_Params_Max["Pmax"] = Max_Params["Max_Power"]
Overall_Params_Max["VFC|Pmax"] = Max_Params["Max_VStack"]
Overall_Params_Max["Efficiency|Pmax"] = Max_Params["Max_EFF"]
Overall_Params_Max["Ptotal(Elec)"] = Power_Total[0]
Overall_Params_Max["Ptotal(Thermal)"] = Power_Total[1]
if ReportMode:
OutputFile.close()
CSVFile.close()
if PrintMode:
print(Report_Message)
opem.Functions.HTML_Desc(
Simulation_Title, Chamberline_Description, HTMLFile)
opem.Functions.HTML_Input_Table(
Input_Dict=Input_Dict,
Input_Params=InputParams,
file=HTMLFile)
opem.Functions.HTML_Overall_Params_Table(
Overall_Params_Max,
Overall_Params_Max_Description,
file=HTMLFile,
header=True)
opem.Functions.HTML_Chart(
x=str(I_List),
y=str(Power_List),
color='rgba(255,99,132,1)',
x_label="I(A)",
y_label="P(W)",
chart_name="Power-Stack",
size="600px",
file=HTMLFile)
opem.Functions.HTML_Chart(
x=str(I_List), y=[
str(Vstack_List), str(Estimated_V)], color=[
'rgba(99,100,255,1)', 'rgb(238, 210, 141)'], x_label="I(A)", y_label="V(V)", chart_name=[
"Voltage-Stack", "Linear-Apx"], size="600px", file=HTMLFile)
opem.Functions.HTML_Overall_Params_Table(
Overall_Params_Linear,
Overall_Params_Linear_Description,
file=HTMLFile,
header=False)
opem.Functions.HTML_Chart(
x=str(I_List),
y=str(Efficiency_List),
color='rgb(255, 0, 255)',
x_label="I(A)",
y_label="EFF",
chart_name="Efficiency",
size="600px",
file=HTMLFile)
opem.Functions.HTML_Chart(x=str(list(map(opem.Functions.rounder,
Power_List))),
y=str(Efficiency_List),
color='rgb(238, 210, 141)',
x_label="P(W)",
y_label="EFF",
chart_name="Efficiency vs Power",
size="600px",
file=HTMLFile)
opem.Functions.HTML_Chart(
x=str(I_List),
y=str(Power_Thermal_List),
color='rgb(255, 0, 255)',
x_label="I(A)",
y_label="P(W)",
chart_name="Power(Thermal)",
size="600px",
file=HTMLFile)
opem.Functions.warning_print(
warning_flag_1=Warning1,
warning_flag_2=Warning2,
I_Warning=I_Warning,
file=HTMLFile,
PrintMode=PrintMode)
opem.Functions.HTML_End(HTMLFile)
HTMLFile.close()
if PrintMode:
print("Done!")
if not TestMode:
if PrintMode:
print(
"Result In -->" +
os.path.join(
os.getcwd(),
Simulation_Title))
else:
return {
"Status": True,
"P": Power_List,
"I": I_List,
"V": Vstack_List,
"EFF": Efficiency_List,
"Ph": Power_Thermal_List,
"V0": B0,
"K": B1,
"VE": Estimated_V}
except Exception:
if TestMode:
return {
"Status": False,
"Message": "[Error] " +
Simulation_Title +
" Simulation Failed!(Check Your Inputs)"}
print(
"[Error] " +
Simulation_Title +
" Simulation Failed!(Check Your Inputs)")
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