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Feeds
Why do I see huge voltage spikes at the output of a 3 phase MMC (Modular multi-level converter) in Simscape, when the number of submodules >1, but not with 1 submodule?
The model may be a bit challenging for the solver due to parameterization. In this case, one way to avoid these spikes is to swi...
7 hours ago | 0
I have some issues with derivating D-Q inductance from a five-phase FEA data.
The code implementing the mathematical transform does not look right as it seems that only mutual inductances are used (Laa, Lbb...
10 hours ago | 0
Bridgeless boost PFC modeling
The shape can be affected by inappropriate parameterization such as capacitor, inductor and other elements. For an example of to...
10 hours ago | 0
Pole pair on Single Phase Asynchronous motor Cap Start-Run
When simulating a single-phase asynchronous motor, the number of pole pairs directly affects the motor's speed. The negative RPM...
11 hours ago | 0
flickering lamp with visual effects in simulink
It is possible to simulate an electrical system with flickering voltage in 1D in Simscape Electrical or even Simulink. To visual...
11 hours ago | 0
Trying to model a hoist with dc motor
There are a few issues with the model. The PI controller is not connected properly as the error is passed to P and I parameter i...
11 hours ago | 0
Error when running simple voltage converter in simulink
Changing the initial value for the capacitor voltage to a non-zero value may help the solver. Without the model is not easy to p...
12 hours ago | 0
Please someone explain me how does the following code works?
If the purpose is to edit a library block, this may not be very easy. There are .p files that are protected and will not be poss...
12 hours ago | 0
how to get Beta in power transformation ?
In continuous time, to achieve a 90-degree phase shift, you can use a Transport Delay block (or a Variable Transport Delay). The...
12 hours ago | 0
Reference frame for MATLAB-SimPowerSystems' asynchronous machine model measurement signals (e.g phiqr,phidr)
This would depend on the block mask parameter Reference frame. This parameter controls the reference frame that is used to conve...
13 hours ago | 0
armature controlled dc motor
At time 10 the load torque is increased from 0 and it settles at around 0.4. As the load stays at a nonzero value it is normal t...
13 hours ago | 0
How can i switch the DC output of fuel cell in hybrid system?
A DC contactor should do the job. DC contactors are electrically controlled switches used for switching high power circuits.
17 hours ago | 0
Linear induction motor in simscape
This error can also be a consequence of how the simulation model was built and I suspect is not the custom code the culprit. Th...
18 hours ago | 0
In MUTUAL INDUCTANCE block, what does the mutual resistance mean ?
The mutual resistance and inductance corresponds to the magnetizing resistance and inductance on the standard transformer circui...
1 day ago | 0
Modeling of NPN silicon phototransistor
Simscape Electrical provides a variety of semiconductor devices (https://mathworks.com/help/sps/semiconductors.html). The photot...
1 day ago | 0
Newbie starter - AC generator circuit in Simulink
Mechanical power at the machine's shaft, in W. In generator mode, this input can be a positive constant or function or the outpu...
1 day ago | 0
Unable to simulate a fault on a Three-Phase Power Line
The block implements a short-circuit fault between phases or between a phase and ground. For example, to program a fault between...
1 day ago | 0
Simscape Synchronous reluctance motor model issue
We don’t know the assumptions used in the custom model. I have spotted a few sign mismatches that I believe should be different ...
1 day ago | 0
Having problem with VSI controller
There are a few fundamental issues with the model. First, a DC voltage source is used to keep the DC-link voltage constant. Ther...
3 days ago | 0
Thyristor Power converter Control
This is part of the control strategy. A reference 90 degrees is used for the firing angle and this angle will be adjusted around...
3 days ago | 0
How to simulate multiple rooftop solar PVs connected to grid in Simulink?
Simscape Electrical provides some good examples both in-product and on MATLAB Central. Check out this repository which provides ...
4 days ago | 0
Connection of PowerGUI Mode block to non powergui block
The solution would be to use sensors to measure the voltages and then feed these voltages to the custom Simulink block.
4 days ago | 0
pv based single stage acim driver error
As the error points out there is an algebraic loop that Simulink could not solve at the time. In R2024b release the model will s...
4 days ago | 0
Lookup table problem in Simulink
This seems to be a physical unit mismatch. In the attached model the input to the PS Lookup Table (1D) is not connected to anyth...
4 days ago | 0
DC Motor Simulation on Simulink Using Datasheet's Specifications.
Inertia is usually given in the datasheet. Friction constant can sometimes be ignored. We can also compute inertia using J=0.5m...
4 days ago | 0
N-Channel MOSFET Body Diode Tabulated I-V Curve Convergence Error
The model although simple poses some numerical challenges for the solver. Due to recent improvements the model can simulate with...
4 days ago | 0
Questions about the switching losses of a MOSFET
If you are operating the MOSFET in the reverse region (negative drain-source currents), the logged simulation data does not repo...
5 days ago | 0
Can a PWM signal with a 100% duty cycle be considered as an unit step?
In the context of the Ziegler-Nichols tuning method, a "unit step" input typically refers to a sudden change from zero to a spec...
5 days ago | 0
Unable to increase the simulation time and also getting wrong output power ,efficiency graphs due to wrong values in Inverter power module circuit.
The fundamental sample time of 5e-7 can be challenging. Also mixing discrete and continuous signals will not help. There are way...
5 days ago | 0
How can I get my motor & drive block to act as energy storage for my pulsed power load?
Rotor inertia can be used to model the flywheel. A very simple approach to model the flywheel is to use a rotational inertia con...
5 days ago | 0
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