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SuperNode.py
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import cmath
import numpy
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QMainWindow, QWidget, QLabel, QLineEdit
from PyQt5.QtWidgets import QPushButton, QMessageBox
class Ui_MainWindow(object):
# setting up widgets
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(550, 600)
MainWindow.setAnimated(True)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
# calculate widget
self.Calculate = QtWidgets.QPushButton(self.centralwidget)
self.Calculate.setGeometry(QtCore.QRect(180, 440, 75, 25))
self.Calculate.clicked.connect(self.compute)
self.Calculate.setAutoDefault(True)
# clear widget
self.Clear = QtWidgets.QPushButton(self.centralwidget)
self.Clear.setGeometry(QtCore.QRect(280, 440, 75, 25))
self.Clear.clicked.connect(self.clear_inputs)
# input widgets
self.V1_arg = QtWidgets.QLineEdit(self.centralwidget)
self.V1_arg.setGeometry(QtCore.QRect(70, 310, 113, 20))
self.V1_arg.setText("75")
self.V1_arg.returnPressed.connect(self.Calculate.click)
self.V1_phase = QtWidgets.QLineEdit(self.centralwidget)
self.V1_phase.setGeometry(QtCore.QRect(70, 340, 113, 20))
self.V1_phase.setText("0")
self.V1_phase.returnPressed.connect(self.Calculate.click)
self.V2_arg = QtWidgets.QLineEdit(self.centralwidget)
self.V2_arg.setGeometry(QtCore.QRect(70, 370, 113, 20))
self.V2_arg.setText("100")
self.V2_arg.returnPressed.connect(self.Calculate.click)
self.V2_phase = QtWidgets.QLineEdit(self.centralwidget)
self.V2_phase.setGeometry(QtCore.QRect(70, 400, 113, 20))
self.V2_phase.setText("60")
self.V2_phase.returnPressed.connect(self.Calculate.click)
self.R1 = QtWidgets.QLineEdit(self.centralwidget)
self.R1.setGeometry(QtCore.QRect(330, 310, 113, 20))
self.R1.setText("4")
self.R1.returnPressed.connect(self.Calculate.click)
self.R2 = QtWidgets.QLineEdit(self.centralwidget)
self.R2.setGeometry(QtCore.QRect(330, 340, 113, 20))
self.R2.setText("2")
self.R2.returnPressed.connect(self.Calculate.click)
self.XL1 = QtWidgets.QLineEdit(self.centralwidget)
self.XL1.setGeometry(QtCore.QRect(330, 370, 113, 20))
self.XL1.setText("4j")
self.XL1.returnPressed.connect(self.Calculate.click)
self.XC1 = QtWidgets.QLineEdit(self.centralwidget)
self.XC1.setGeometry(QtCore.QRect(330, 400, 113, 20))
self.XC1.setText("-j")
self.XC1.returnPressed.connect(self.Calculate.click)
# LCD Widgets
self.Va_arg = QtWidgets.QLCDNumber(self.centralwidget)
self.Va_arg.setGeometry(QtCore.QRect(73, 480, 101, 30))
self.Va_arg.setSegmentStyle(QtWidgets.QLCDNumber.Flat)
self.Va_arg.display(96.8)
self.Vb_arg = QtWidgets.QLCDNumber(self.centralwidget)
self.Vb_arg.setGeometry(QtCore.QRect(310, 480, 101, 30))
self.Vb_arg.setSegmentStyle(QtWidgets.QLCDNumber.Flat)
self.Vb_arg.display(16.89)
self.Va_phase = QtWidgets.QLCDNumber(self.centralwidget)
self.Va_phase.setGeometry(QtCore.QRect(73, 510, 101, 30))
self.Va_phase.setSegmentStyle(QtWidgets.QLCDNumber.Flat)
self.Va_phase.display(69.67)
self.Vb_phase = QtWidgets.QLCDNumber(self.centralwidget)
self.Vb_phase.setGeometry(QtCore.QRect(310, 510, 101, 30))
self.Vb_phase.setSegmentStyle(QtWidgets.QLCDNumber.Flat)
self.Vb_phase.display(165.7)
# labels
self.Supernode = QtWidgets.QLabel(self.centralwidget)
self.Supernode.setEnabled(True)
self.Supernode.setGeometry(QtCore.QRect(150, 9, 300, 60))
font = QtGui.QFont()
font.setPointSize(28)
self.Supernode.setFont(font)
self.Supernode.setTextFormat(QtCore.Qt.RichText)
self.label = QtWidgets.QLabel(self.centralwidget)
self.label.setGeometry(QtCore.QRect(190, 310, 100, 13))
self.label_2 = QtWidgets.QLabel(self.centralwidget)
self.label_2.setGeometry(QtCore.QRect(190, 340, 100, 16))
self.label_3 = QtWidgets.QLabel(self.centralwidget)
self.label_3.setGeometry(QtCore.QRect(190, 370, 100, 13))
self.label_5 = QtWidgets.QLabel(self.centralwidget)
self.label_5.setGeometry(QtCore.QRect(190, 400, 100, 16))
self.label_6 = QtWidgets.QLabel(self.centralwidget)
self.label_6.setGeometry(QtCore.QRect(450, 400, 91, 16))
self.label_4 = QtWidgets.QLabel(self.centralwidget)
self.label_4.setGeometry(QtCore.QRect(450, 370, 47, 13))
self.label_7 = QtWidgets.QLabel(self.centralwidget)
self.label_7.setGeometry(QtCore.QRect(450, 340, 91, 16))
self.label_8 = QtWidgets.QLabel(self.centralwidget)
self.label_8.setGeometry(QtCore.QRect(450, 310, 47, 13))
self.label_9 = QtWidgets.QLabel(self.centralwidget)
self.label_9.setGeometry(QtCore.QRect(45, 490, 47, 13))
self.label_10 = QtWidgets.QLabel(self.centralwidget)
self.label_10.setGeometry(QtCore.QRect(280, 490, 47, 13))
self.label_12 = QtWidgets.QLabel(self.centralwidget)
self.label_12.setGeometry(QtCore.QRect(180, 490, 50, 13))
self.label_13 = QtWidgets.QLabel(self.centralwidget)
self.label_13.setGeometry(QtCore.QRect(180, 520, 100, 13))
self.label_14 = QtWidgets.QLabel(self.centralwidget)
self.label_14.setGeometry(QtCore.QRect(420, 490, 50, 13))
self.label_15 = QtWidgets.QLabel(self.centralwidget)
self.label_15.setGeometry(QtCore.QRect(420, 520, 100, 13))
# import image
self.label_11 = QtWidgets.QLabel(self.centralwidget)
self.label_11.setGeometry(QtCore.QRect(70, 70, 391, 201))
self.label_11.setPixmap(QtGui.QPixmap("Sample Circuit.PNG"))
self.label_11.setScaledContents(True)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 550, 21))
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
# Widgets Renaming
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "Supernode Calculator"))
self.Calculate.setText(_translate("MainWindow", "Calculate"))
self.Clear.setText(_translate("MainWindow", "Clear"))
self.Supernode.setText(_translate("MainWindow", "Sample Circuit"))
self.label.setText(_translate("MainWindow", "V1 Magnitude"))
self.label_2.setText(_translate("MainWindow", "V1 Phase (degrees)"))
self.label_3.setText(_translate("MainWindow", "V2 Magnitude"))
self.label_5.setText(_translate("MainWindow", "V2 Phase (degrees)"))
self.label_6.setText(_translate("MainWindow", "XC (ohm)"))
self.label_4.setText(_translate("MainWindow", "XL (ohm)"))
self.label_7.setText(_translate("MainWindow", "R2 (ohm)"))
self.label_8.setText(_translate("MainWindow", "R1 (ohm)"))
self.label_9.setText(_translate("MainWindow", "Va = "))
self.label_10.setText(_translate("MainWindow", "Vb = "))
self.label_12.setText(_translate("MainWindow", "Magnitude"))
self.label_13.setText(_translate("MainWindow", "Phase (degrees)"))
self.label_14.setText(_translate("MainWindow", "Magnitude"))
self.label_15.setText(_translate("MainWindow", "Phase (degrees)"))
# Modified Nodal Analysis Algorithm
def compute(self):
try:
# putting inputs into variables
v1arg = float(self.V1_arg.text())
v1phase = float(self.V1_phase.text())
v2arg = float(self.V2_arg.text())
v2phase = float(self.V2_phase.text())
r1 = float(self.R1.text())
r2 = float(self.R2.text())
xL = complex(self.XL1.text())
xC = complex(self.XC1.text())
# getting the rect form of V1 and V2
v1 = cmath.rect(v1arg, v1phase * (cmath.pi / 180))
v2 = cmath.rect(v2arg, v2phase * (cmath.pi / 180))
# making the matrix equation Ax=B to get the unknown values in matrix x
A = numpy.array([
[1 / r1 + 1 / xL, 1 / r2 + 1 / xC],
[1, -1]
])
B = numpy.array([v1/r1, v2])
# solve system
x = numpy.linalg.solve(A, B)
Va = cmath.polar(x[0])
Vb = cmath.polar(x[1])
# display answer
self.Va_arg.display(Va[0])
self.Va_phase.display(Va[1]*(180/cmath.pi))
self.Vb_arg.display(Vb[0])
self.Vb_phase.display(Vb[1]*(180/cmath.pi))
# show error pop-up
except:
msg = QMessageBox()
msg.setWindowTitle("Error!")
msg.setText('Invalid Input')
msg.exec_()
# clear inputs
def clear_inputs(self):
self.V1_arg.setText("")
self.V1_phase.setText("")
self.V2_arg.setText("")
self.V2_phase.setText("")
self.R1.setText("")
self.R2.setText("")
self.XC1.setText("")
self.XL1.setText("")
self.Va_arg.display(0)
self.Va_phase.display(0)
self.Vb_arg.display(0)
self.Vb_phase.display(0)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())