from numpy import ones, pi, array, zeros, linspace, cos
from os.path import join
import matplotlib.pyplot as plt
from ....Tests import save_validation_path as save_path
from ....Classes.Simu1 import Simu1
from ....Tests.Validation.Machine.SynRM_001 import SynRM_001
from ....Classes.InputCurrent import InputCurrent
from ....Classes.InputFlux import InputFlux
from ....Classes.ImportGenVectLin import ImportGenVectLin
from ....Classes.ImportMatrixVal import ImportMatrixVal
from ....Classes.ImportMatlab import ImportMatlab
from ....Classes.MagFEMM import MagFEMM
from ....Classes.Output import Output
from ....Tests import DATA_DIR
[docs]def test_Magnetic_Phi0():
"""Validation of a SynRM machine from Syr-e r29 open source software
https://sourceforge.net/projects/syr-e/
Test compute the Torque in FEMM as a function of Phi0
and compare the results with Syr-e r29
"""
# The aim of this validation test is to compute the torque as a function of Phi0
# As (for now) there is no electrical model, we will compute the current for each Phi0 here
freq0 = 50 # supply frequency [Hz]
qs = 3 # Number of phases
p = 2 # Number of pole pairs
Nt_tot = 3 # Number of time step for each current angle Phi0
Imax = 28.6878 # Nominal stator current magnitude [A]
# to have one torque ripple period since torque ripple appears at multiple of 6*freq0
Nrev = 1 / 6
time = linspace(0, Nrev * p / freq0 * (1 - 1 / Nt_tot), Nt_tot)
Phi0 = (
array(
[
0.0,
15.0,
30.0,
45.0,
60.0,
67.5,
75.0,
85.0,
90.0,
95.0,
105.0,
120.0,
135.0,
150.0,
165.0,
180.0,
]
)
* pi
/ 180
)
Is_list = list()
for Phi in Phi0:
Is = zeros((Nt_tot, qs))
for q in range(qs):
Is[:, q] = Imax * cos(2 * pi * freq0 * time - q * 2 * pi / qs + Phi)
Is_list.append(Is)
# Definition of the main simulation
simu = Simu1(name="EM_SynRM_FL_001", machine=SynRM_001)
time_obj = ImportMatrixVal(value=time)
angle = ImportGenVectLin(start=0, stop=2 * pi, num=2016, endpoint=False)
alpha_rotor = ImportMatrixVal(value=array([0, pi / 9, 2 * pi / 9]) + 2.6180)
simu.input = InputCurrent(
Is=None,
Ir=None, # No winding on the rotor
Nr=None,
angle_rotor=alpha_rotor,
time=time_obj,
angle=angle,
angle_rotor_initial=0,
)
# Definition of the magnetic simulation (1/2 symmetry)
simu.mag = MagFEMM(
is_stator_linear_BH=0,
is_rotor_linear_BH=0,
is_symmetry_a=True,
is_antiper_a=True,
sym_a=2,
)
simu.struct = None
# Expected results
Tem = [
0.08,
7.09,
13.95,
19.75,
23.75,
23.63,
21.62,
8.7655,
-0.21,
-8.8544,
-21.316,
-23.73,
-20.20,
-13.99,
-7.5445,
0.08,
]
Tem_FEMM = zeros(Phi0.shape)
for ii, I in enumerate(Is_list):
simu.input.Is = ImportMatrixVal(value=I)
out = Output(simu=simu)
simu.run()
print("test_EM_SynRM_FL_001: " + str(ii + 1) + "/16")
Tem_FEMM[ii] = out.mag.Tem_av
fig, ax = plt.subplots()
ax.set_title("Torque as a function of Phi0")
ax.set_xlabel("Phi0 [rad]")
ax.set_ylabel("Torque [N.m]")
ax.plot(Phi0, Tem_FEMM, "r", label="FEMM")
ax.plot(Phi0, Tem, "b--", label="Syr-e")
fig.savefig(join(save_path, "test_EM_SynRM_FL_001.png"))
