Unterschiede
Hier werden die Unterschiede zwischen zwei Versionen angezeigt.
Nächste Überarbeitung | Vorhergehende Überarbeitung | ||
ee2:task_ezrkjzifcegttcpc_with_calculation [2024/07/04 10:48] mexleadmin angelegt |
ee2:task_ezrkjzifcegttcpc_with_calculation [2024/07/04 11:34] (aktuell) mexleadmin |
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- | {{tag>resonance resonant_circuit | + | {{tag>Multiphase_systems |
- | # | + | # |
<fs medium> | <fs medium> | ||
- | Multiphase systems (10 points) | ||
A symmetrical three-phase generator in a delta connection shall be considered in the following. \\ | A symmetrical three-phase generator in a delta connection shall be considered in the following. \\ | ||
A voltage with the RMS value $U_{\rm RMS} = 110~\rm V$ is applied between the terminals of each winding. \\ | A voltage with the RMS value $U_{\rm RMS} = 110~\rm V$ is applied between the terminals of each winding. \\ | ||
Zeile 20: | Zeile 19: | ||
Since the given voltage of $U_{\rm RMS} = 110~\rm V$ is applied between the terminals of each winding, this is also the string voltage $U_\rm S$. \\ | Since the given voltage of $U_{\rm RMS} = 110~\rm V$ is applied between the terminals of each winding, this is also the string voltage $U_\rm S$. \\ | ||
For delta configuration, | For delta configuration, | ||
+ | |||
+ | {{drawio> | ||
+ | |||
# | # | ||
Zeile 30: | Zeile 32: | ||
# | # | ||
+ | Since the given current of $I_{\rm RMS} = 5~\rm A$ is running through each winding, this is also the string current $I_\rm S$. \\ | ||
+ | For the phase current $I_\rm L$, one has to consider that at each node the sum of all the notes must be zero: $\sum_i I_i =0$. \\ | ||
+ | By this (and showing in the example in the image below), One can see, that $I_\rm L= \sqrt{3} \cdot I_{\rm RMS} = \sqrt{3} | ||
+ | {{drawio> | ||
# | # | ||
# | # | ||
- | $f_0 = 205.5 \rm Hz$ | + | * $I_{\rm S} = 5~\rm A$ |
+ | * $I_{\rm L} = 8.66~\rm A$ | ||
# | # | ||
Zeile 41: | Zeile 48: | ||
# | # | ||
- | The resonant frequency $f_0$ is given as | ||
- | \begin{align*} | ||
- | f_0 = {{1}\over{ 2\pi \sqrt{LC} }} | ||
- | \end{align*} | ||
- | With the values: | + | The active power $P$ is given by: $P = 3 \cdot U \cdot I \cdot \sin(\varphi)$ |
\begin{align*} | \begin{align*} | ||
- | f_0 & | + | |
- | & | + | |
\end{align*} | \end{align*} | ||
Zeile 55: | Zeile 58: | ||
# | # | ||
- | $f_0 = 205.5 \rm Hz$ | + | $W = 1.61 ~\rm kW$ |
# | # | ||
# | # |