def test_CCVS2(self):
"""Lcapy: check CCVS
"""
a = Circuit()
a.add('H1 1 0 H1 -4')
t = a.thevenin(1, 0)
self.assertEqual(t.V, 0, "Incorrect Thevenin voltage")
self.assertEqual(t.Z, -4, "Incorrect Thevenin impedance")
self.assertEqual(a.H1.Voc, 0, "Incorrect cpt voltage")
self.assertEqual(a.H1.Z, 0, "Incorrect cpt impedance")
def test_VRL1(self):
"""Lcapy: check VRL circuit
"""
a = Circuit()
a.add('V1 1 0 {V1 / s}')
a.add('R1 1 2')
a.add('L1 2 0 L1 0')
# This currently fails due to two symbols of the same name
# having different assumptions.
# Note, V1 acts as a short-circuit for the impedance/admittance
self.assertEqual2(
a.thevenin(1, 2).Voc, a.Voc(1, 2), "incorrect thevenin voltage")
self.assertEqual2(
a.thevenin(1, 2).Z, a.impedance(1, 2),
"incorrect thevenin impedance")
self.assertEqual2(
a.norton(1, 2).Isc, a.Isc(1, 2), "incorrect norton current")
self.assertEqual2(
a.norton(1, 2).Y, a.admittance(1, 2),
"incorrect norton admittance")
self.assertEqual2(a.impedance(1, 2), (R('R1') | L('L1')).Z,
"Z incorrect across R1")
self.assertEqual2(a.impedance(2, 0), (R('R1') | L('L1')).Z,
"Z incorrect across L1")
self.assertEqual2(a.impedance(1, 0), R(0).Z, "Z incorrect across V1")
self.assertEqual2(a.admittance(1, 2), (R('R1') | L('L1')).Y,
"Y incorrect across R1")
self.assertEqual2(a.admittance(2, 0), (R('R1') | L('L1')).Y,
"Y incorrect across L1")
# This has a non-invertible A matrix.
# self.assertEqual2(a.admittance(1, 0), R(0).Y, "Y incorrect across V1")
self.assertEqual2(a.Voc(1, 0),
V('V1' / s).Voc, "Voc incorrect across V1")
self.assertEqual(a.is_ivp, True, "Initial value problem incorrect")
self.assertEqual(a.is_dc, False, "DC incorrect")
self.assertEqual(a.is_ac, False, "AC incorrect")
def test_VRL1(self):
"""Lcapy: check VRL circuit
"""
a = Circuit()
a.add('V1 1 0 {V1 / s}')
a.add('R1 1 2')
a.add('L1 2 0 L1 0')
# This currently fails due to two symbols of the same name
# having different assumptions.
# Note, V1 acts as a short-circuit for the impedance/admittance
self.assertEqual2(
a.thevenin(1, 2).Voc, a.Voc(1, 2), "incorrect thevenin voltage")
self.assertEqual2(
a.thevenin(1, 2).Z, a.Z(1, 2), "incorrect thevenin impedance")
self.assertEqual2(
a.norton(1, 2).Isc, a.Isc(1, 2), "incorrect norton current")
self.assertEqual2(
a.norton(1, 2).Y, a.Y(1, 2), "incorrect norton admittance")
self.assertEqual2(
a.Z(1, 2), (R('R1') | L('L1')).Z, "Z incorrect across R1")
self.assertEqual2(
a.Z(2, 0), (R('R1') | L('L1')).Z, "Z incorrect across L1")
self.assertEqual2(a.Z(1, 0), R(0).Z, "Z incorrect across V1")
self.assertEqual2(
a.Y(1, 2), (R('R1') | L('L1')).Y, "Y incorrect across R1")
self.assertEqual2(
a.Y(2, 0), (R('R1') | L('L1')).Y, "Y incorrect across L1")
# This has a non-invertible A matrix.
# self.assertEqual2(a.Y(1, 0), R(0).Y, "Y incorrect across V1")
self.assertEqual2(a.Voc(1, 0), V('V1' / s).Voc,
"Voc incorrect across V1")
self.assertEqual(a.is_ivp, True, "Initial value problem incorrect")
self.assertEqual(a.is_dc, False, "DC incorrect")
self.assertEqual(a.is_ac, False, "AC incorrect")
def test_oneport(self):
a = Circuit("""
V 2 0 s
L 2 1
R 1 0""")
th = a[1].thevenin()
no = a[1].norton()
self.assertEqual(th.Voc, no.Voc, "Voc incorrect")
self.assertEqual(th.Isc, no.Isc, "Isc incorrect")
self.assertEqual(th.Z, no.Z, "Z incorrect")
self.assertEqual(th.Y, no.Y, "Y incorrect")
th = a[2].thevenin(1)
no = a[2].norton(1)
self.assertEqual(th.Voc, no.Voc, "Voc incorrect")
self.assertEqual(th.Isc, no.Isc, "Isc incorrect")
self.assertEqual(th.Z, no.Z, "Z incorrect")
self.assertEqual(th.Y, no.Y, "Y incorrect")
th = a.L.thevenin()
no = a.L.norton()
self.assertEqual(th.Voc, no.Voc, "Voc incorrect")
self.assertEqual(th.Isc, no.Isc, "Isc incorrect")
self.assertEqual(th.Z, no.Z, "Z incorrect")
self.assertEqual(th.Y, no.Y, "Y incorrect")
th = a.thevenin(2, 1)
no = a.norton(2, 1)
self.assertEqual(th.Voc, no.Voc, "Voc incorrect")
self.assertEqual(th.Isc, no.Isc, "Isc incorrect")
self.assertEqual(th.Z, no.Z, "Z incorrect")
self.assertEqual(th.Y, no.Y, "Y incorrect")
