Ex03Task2 Translate subtask and add table and picture

exercise/fig/ex03/FigTab_BoostBuckConverter.tex

@@ -0,0 +1,17 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%  Boost buck converter parameter
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\begin{table}[ht]
+    \centering  % Zentriert die Tabelle
+    \begin{tabular}{llll}
+        \toprule
+
+        Input voltage: &  $U_{\mathrm{1}} = \SI{380}{\volt}$ & Output voltage: & $U_{\mathrm{2}} = \SI{285}{\volt}$  to $\SI{450}{\volt}$\\ 
+        Output power: & $P_{\mathrm{2}} = \SI{3000}{\watt}$ & Switching frequency: & $f_{\mathrm{s}} = \SI{50}{\kilo\hertz}$ \\ 
+        \multicolumn{4}{l}{$P_{\mathrm{2}}$ is constant (unless otherwise stated)} \\
+        \bottomrule
+    \end{tabular}
+    \caption{Parameters of the circuit.}  % Beschriftung der Tabelle
+    \label{table:Parameters of the buck-boost converter.}
+\end{table}

exercise/fig/ex03/Fig_BoostBuckConverter.tex

@@ -0,0 +1,60 @@
+
+\begin{figure}[htb]
+    \begin{center}
+        \begin{circuitikz}[european currents,european resistors,american inductors]
+            \draw 
+                    % Base coordinates
+                    (0,0) coordinate (jU1v)
+                    (0,-3) coordinate (jU1g)
+                    % Add components
+                    % Add primary source U1
+                    (jU1v) to [V=$U_1$] (jU1g)
+                    % Add current symbol and T1 with Control
+                    (jU1v) ++(2,0) node[nigfete,rotate=90](Trans1){} -- ++(2.5,0) coordinate(T1)
+                    (Trans1.G)  to [sqV] ++(0,-1)
+                    % At transistor label T1
+                    (Trans1)  node[anchor=south,color=black]{$T_1$}                    
+                    % Short horizontal line
+                    (jU1v) to [short,-] (Trans1.D)
+                    % Add junction point for M-buck diode
+                    (T1) to [short,-*] ++(0,0) coordinate (jDBuckM)
+                    % Add junction point for P-buck diode
+                    (jDBuckM) ++(0,-3) coordinate (jDBuckP)
+                    % Add Inductance
+                    (jDBuckM) to  [L, l=$L$] ++ (3,0) coordinate (jT2v)
+                    % Add arrow and Text
+                    ++(-0.5,0) node[currarrow](IL){}
+                    (IL)  node[anchor=south,color=black]{$i_\mathrm{L}$}
+                    % Add junction point for Transistor
+                    (jT2v) to [short,-*] ++(0,0)
+                    % Add junction for Transistor
+                    (jT2v) ++(0,-3) coordinate (jT2g)  
+                    % Add Diode
+                    (jT2v) to  [D-,l^=$D_{\mathrm{boost}}$] ++ (2,0) coordinate (jU2v)           
+                    % Add coordinate jU2v and jU2g
+                    (jU2v) to [short,-] ++(0,-3) coordinate (jU2g)
+                    % Add secondary source U2
+                    (jU2v) to [V=$U_2$] (jU2g)          
+                    % Add junction point for transistor T2g
+                    (jU2g) to [short,-*] (jT2g)
+                    % Add transistor T2
+                    (jT2v) ++ (0,-1.5) node[nigfete](Trans2){}
+                    % At transistor label T2
+                    (Trans2)  node[anchor=west,color=black]{$T_2$}                     
+                    % Connect Transistor
+                    (jT2v) to [short,-] (Trans2.D)
+                    (jT2g) to [short,-] (Trans2.S)
+                    (Trans2.G) to [sqV] ++(-1,0)
+                    % Add Junction point for diode D2g
+                    (jT2g) to [short,-*] (jDBuckP)
+                    % Add diode D2g
+                    % (jDBuckP) to  [D-,l^=$D_{buck}$,v =$U$,voltage shift=0, voltage=straight] (jDBuckM)
+                    (jDBuckP) to  [D-, l^=$D_{\mathrm{buck}}$, v_<=$U_0$, voltage=straight]  (jDBuckM)
+                    % Connect U1
+                    (jDBuckP) to [short,-] (jU1g)
+           ;
+        \end{circuitikz}
+    \end{center}
+    \caption{Buck-boost converter circuit.}
+    \label{fig:ex02_step_down_with_load_resistor}
+\end{figure}

exercise/tex/exercise02.tex

@@ -620,7 +620,7 @@
     Yes, the relationsships are independent from the switching frequency and switching points.
 \end{solutionblock}
 
-    \vspace{2em}\par
+\vspace{2em}\par
 % Explaining text for the next subtask
 If the transistors $T_1$ and $T_2$ are switched on, a constant voltage drop $U_\mathrm{F}=\SI{2.5}{\volt}$ occurs at the transistors
  regardless of the current. All other components are considered ideal and loss-free.

exercise/tex/exercise03.tex

@@ -70,63 +70,45 @@
     As the maximum current through the transistor is the current $I_1$, these values are the same. Since the BCM is considered in this circuit, the maximum current is the peak current, which corresponds to the value of $\SI{4.16}{\ampere}$.
  \end{solutionblock}
 
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% Task 2: Boost-Buck converter and SEPIC topology
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 \task {Boost-Buck converter and SEPIC topology}
 
-Versorgung einer Plasmabeschichtungsanlage mit variabler Spannung U2 ausgehend von einer
-geregelten Spannung U1 über Kopplung eines Hochsetzstellers und eines Tiefsetzstellers (mit
-gemeinsamer Kapazität).
-
-
-Bild
-
-
-Angaben:
-T2
-DBoost
-T1
-C
-U
-L2
-DBuck
-U2
-U1 = 380V
-U2 = 285V ... 450V
-P2 = 3000W konstant (falls nicht anders angegeben)
-Schaltfrequenz: fP = 50kHz
-
+The supply of a plasma coating system is realized by a boost converter and a buck converter (with common capacitance).
+The converter is connected to a voltage $U_\mathrm{1}$ and provides a variable output voltage $U_\mathrm{2}$.
 
-Die Ausgangsspannung wird durch entsprechende Einstellung der Tastverhältnisse D1 (von Transistor
-T1) und D2 (von Transistor T2) mittels einer Regelung auf den vorgegebenen Wert eingestellt. Beide
-Transistoren arbeiten mit gleicher Schaltfrequenz. Die schaltfrequente Schwankung der
-Zwischenkreisspannung und der Ströme in den Induktivitäten können falls nicht anders
-angegeben vernachlässigt werden. Die Ströme in L1 und L2 zeigen kontinuierlichen Verlauf.
 
-Beide Transistoren werden mit gleicher relativer Einschaltdauer D1 = D2 = D betrieben.
+\par
+% Schematic of Buck Boost Converter cascade
+\input{./fig/ex03/Fig_BoostBuckConverter}
+\par
+%Table of parameter values 
+\input{./fig/ex03/FigTab_BoostBuckConverter}
 
-\subtask{Berechnen Sie die zur Realisierung einer Ausgangsspannung U2 einzustellende relative
-Einschaltdauer D der Transistoren T1 und T2.}
+The output voltage is set to the specified value by adjusting the duty cycles $D_\mathrm{1}$ (of transistor $T_\mathrm{1}$) 
+and $D_\mathrm{2}$ (of transistor $T_\mathrm{2}$) using a control system. Both transistors operate at the same switching frequency. 
+The switching frequency fluctuation of the intermediate circuit voltage and the currents in the inductors can be ignored unless otherwise stated. 
+The currents in $L_\mathrm{1}$ and $L_\mathrm{2}$ show a continuous course. Both transistors are operated with the 
+same relative duty cycle $D_\mathrm{1}$ = $D_\mathrm{2}$ = $D$.
 
-\subtask{Welche Zwischenkreisspannung U stellt sich in Abhängigkeit von U2 ein?}
+\subtask{Calculate the relative duty cycle $D$ of the transistors $T_\mathrm{1}$ and $T_\mathrm{1}$ to be set to achieve an output voltage $U_\mathrm{2}$.}
 
-\subtask{Stellen Sie D und U über U2 graphisch dar und geben Sie die Zahlenwerte für U2 = 285V, U2 =
-380V und U2 = 450V an.}
+\subtask{Which intermediate circuit voltage U is determined depending on $U_\mathrm{2}$?}
 
-\subtask{Welche Sperrspannungsfestigkeit müssen die Transistoren T1 und T2 und die Dioden DBoost und
-DBuck aufweisen?}
+\subtask{Plot $D$ and the voltage against $U_\mathrm{2}$ and calculate the numerical values for $U_\mathrm{2}$ = 285V, $U_\mathrm{2}$ =
+380V and $U_\mathrm{2}$ = 450V.}
 
-Die Steuerung erfolge weiterhin mit D1 = D2 = D. Die ein- und ausgangsseitigen Induktivitäten
-weisen gleichen Wert L1 = L2 = L = 0.5mH auf.
+\subtask{What blocking voltage strength must the transistors $T_\mathrm{1}$ and $T_\mathrm{2}$ and the diodes DBoost and
+DBuck have?}
+\vspace{2em}\par
+The control continues with $D_\mathrm{1}$ = $D_\mathrm{2}$ = $D$. The input and output inductances 
+have the same value $L_\mathrm{1}$ = $L_\mathrm{2}$ = $L$ = $\SI{0.5}{m\henry}$.
 
-% \subtask{Berechnen Sie allgemein die Abhängigkeit des eingangs- und ausgangsseitigen Induktivitätsstromrippels $\Delta$iL1,pp(D) und $\Delta$i_{L2},pp(D) ausschliesslich vom Tastverhältnis D.}
-\subtask {Berechnen Sie allgemein die Abhängigkeit des eingangs- und ausgangsseitigen Induktivitätsrippels $\Delta i_{L1}$, pp(D) und $\Delta i_{L2}$,pp(D)} 
+\subtask{Write the formula for the dependence of the input and output inductance ripple $\Delta i_{L1}$ and $\Delta i_{L2}$}
 
-\subtask{Wie weit darf die Ausgangleistung reduziert werden, um gerade noch kontinuierlichen Betrieb für
-den gesamten Ausgangsspannungsbereich sicherzustellen (d.h. kontinuierlicher Stromverlauf in L1
-und L2)?}
+\subtask{To what minimum value can the output power be reduced while still ensuring continuous operation across the entire output voltage range? 
+(i.e. continuous current flow in $L_\mathrm{1}$  and L$L_\mathrm{2}$)?}
 
-\subtask{In welchem Abschnitt des Ausgangsspannungsbereiches wird diese Grenze zuerst
-eingangsseitig, in welchem zuerst ausgangsseitig erreicht?}
+\subtask{In which section of the output voltage range is this limit reached first on the input side and in which section is it reached first on the output side?}