Interfacing the Electrical Circuit with Other Simulink BlocksĮlectrical Specialized Power Systems blocks and the Simulink blocks.
Resistor connection matlab 2017 simulink windows#
Waveforms in the scope windows by drawing a box around the region of You can also modify the frequency and the phase. While the simulation is running, open the Vs blockĭialog box and modify the amplitude. The purpose of this block is discussed in Using the Powergui Block to Simulate Simscape Electrical Specialized Power Systems Models. Set its parameters asĪdd a powergui block from the Simscape > Electrical > Specialized Power Systems library. The Simscape > Electrical > Specialized Power Systems > Passives library.
Resistor connection matlab 2017 simulink series#
Therefore, you might find it more convenient to use a Series RLC Load block thatĪllows you to specify directly the active and reactive powers absorbed by The R and L values manually based on the quality factor and reactive power Model the shunt reactor, but then you would have to calculate and specify You could use a Series RLC Branch block to The shunt reactor is modeled by a resistor in series Window, set its parameters as shown in Circuit to Be Modeled, and specify one The Simscape > Electrical > Specialized Power Systems > Passives library into the circuit1 Model accuracy depends on the number of PI sections used for the model. Several PI circuits, each representing a small section of the line.Ī PI section consists of a series R-L branch and two shunt C branches. Of the line with a finite number of states can be obtained by cascading This model cannot be simulated as a linear system because a delayĬorresponds to an infinite number of states. Normally consists of a delay equal to the wave propagation time along the The model of a line with uniformly distributed R, L, and C parameters You add the circuit breaker later in Simulating Transients.
Resize the various components and interconnect blocks byĭragging lines from outputs to inputs of appropriate blocks. Once the dialog box is closed, notice that the L and C components haveĭisappeared so that the icon now shows a single resistor. Select R for the Branch Type parameter and set the R parameter according to Which is already in your circuit1 window. The resistance Rs_eq of the circuit can be obtained The amplitude to be specified for a sinusoidal source is its peak valueĬhange the name of this block from AC Voltageįrom the Simscape > Electrical > Specialized Power Systems > Passives library, set its parameters as shown in Circuit to Be Modeled, and name it The AC Voltage Source block according to the values shown in Set the Amplitude, Phase, and Frequency parameters of
IEEE Std 112-2017 specifies measuring the terminal to terminal resistance.Open a new blank model to contain your first circuit andĪdd the AC Voltage Source block from the Simscape > Electrical > Specialized Power Systems > Sources library. The equivalent circuit is based on the wye connection, so the wye equivalent is used for analysis regardless of the actual connection. If you don't know the connection, assume wye. Note that you can not determine the true resistance unless you know whether the motor is connected wye or delta. The resistance test can be performed by connecting to two terminals with no connection to the third terminal. The resistance of the connected combination of three resistors would be 1.5 times an individual resistor value, so the multiplier in the simulation, must be 2/3. In the simulation, I would expect the same, except that there is Rsa, Rsb and Rsc connected as shown below.
The transformer and the components in the secondary circuit essentially disappear.ĭiagram adapted from Malcom Barnes "Practical Variable Speed Drives and Power Electronics"
You can see that when a DC voltage is applied between L and N, all of the inductors become short circuits and what is left is simply Rs and the DC source. This version of the equivalent circuit of an induction motor is the most complete version that is commonly used.