From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001
From: prashantsinalkar
Date: Tue, 10 Oct 2017 12:27:19 +0530
Subject: initial commit / add all books

---
 1430/CH7/EX7.9/exa7_9.sce | 29 +++++++++++++++++++++++++++++
 1430/CH7/EX7.9/exa7_9.txt | 21 +++++++++++++++++++++
 2 files changed, 50 insertions(+)
 create mode 100644 1430/CH7/EX7.9/exa7_9.sce
 create mode 100644 1430/CH7/EX7.9/exa7_9.txt

(limited to '1430/CH7/EX7.9')

diff --git a/1430/CH7/EX7.9/exa7_9.sce b/1430/CH7/EX7.9/exa7_9.sce
new file mode 100644
index 000000000..1504575ac
--- /dev/null
+++ b/1430/CH7/EX7.9/exa7_9.sce
@@ -0,0 +1,29 @@
+// Example 7.9
+// Power-Factor Correction with Parallel Loads
+V_l=780; // Generator Line voltage
+f=60; // Cyclic frequency (Hz)
+Z1_del= complex(30,60); // Load 1; balanced delta impedance
+Z2_wye=complex(30,0);// Load 2; balanced wye with impedance
+// Equivalent wye impedance of the delta load is ,
+Z1_wye=Z1_del/3;
+// Potential at equivalent neutral N1 of the delta load equals the potential at 
+// N2 in the wye load
+// Hence from figure 7.24(b)
+Z_wye=(Z1_wye*Z2_wye)/(Z1_wye+Z2_wye);// Equivalent wye impedance per phase
+V_phi= V_l/sqrt(3); // Phase voltage from line voltage
+I_rms=V_phi/abs(Z_wye); // RMS current for one phase of the combined load
+P_phi=real(Z_wye)*I_rms^2; // Real power
+Q_phi=imag(Z_wye)*I_rms^2; // Reactive power
+// For balanced condition ,the three capacitor must be equal and arranged in a 
+// delta or wye configuration
+C_del=Q_phi/(2*%pi*f*V_l^2); // For delta configuration
+C_wye= 3*C_del; // For wye configuration
+Q_C=-Q_phi; // Condition for connecting capacitor
+// Total Average power supplied by the generator
+P=3*P_phi;
+I_l=P/(sqrt(3)*V_l);// RMS line current
+disp(C_del,"Capacitance for power factor correction in delta configuration(in farad)=")
+disp(C_wye,"Capacitance for power factor correction in wye configuration(in farad)=")
+disp(P,"Total average power supplied by the generator(in Watt)=")
+disp(I_l,"RMS line current(in Amps)=")
+// NOTE- Computed Values for C_del and C_wye in Textbook is wrong.
diff --git a/1430/CH7/EX7.9/exa7_9.txt b/1430/CH7/EX7.9/exa7_9.txt
new file mode 100644
index 000000000..4a6b86e43
--- /dev/null
+++ b/1430/CH7/EX7.9/exa7_9.txt
@@ -0,0 +1,21 @@
+  
+ 
+-->exec('C:\Users\sangeet\Documents\Scilab\Circuits\Chapter 7\exa7.9.sce', -1)
+ 
+ Capacitance for power factor correction in delta configuration(in farad)=   
+ 
+    0.0000354  
+ 
+ Capacitance for power factor correction in wye configuration(in farad)=   
+ 
+    0.0001061  
+ 
+ Total average power supplied by the generator(in Watt)=   
+ 
+    32448.  
+ 
+ RMS line current(in Amps)=   
+ 
+    24.017771  
+ 
+
-- 
cgit