EMC Plus: Bulk Current Injection Conducted Immunity
Hello everyone, this is Aded from Ozen Engineering, Inc. In this video, I'll demonstrate an example of bulk current injection conducted immunity simulation using ANSYS EMC+.
We will explore how an injected current affects our signal. I will use the same model as in the previous crosstalk demo. You can find the link to it in the description box below.
Simulation Setup
-
Create a Surface and Set a Current Source
- Select the surface, press
Ctrl + C,Ctrl + Vto copy it. - Move it in the minus X direction by 100 millimeters.
- Go to the EMA3D tab and select the current source.
- Click on current excitation source and give it a name.
- Keep the current type set to electric, select the surface, and click complete.
- Select the surface, press
-
Select Waveform for Current Source
- Under signals, click on sine.
- Set the start time to half the simulation time for easier detection of interference effects.
- Change the amplitude to 20 and set the frequency to 100 megahertz.
- Drag and drop the signal under the source.
-
Place a Current Probe
- Place a current probe in the center of the wire and name it "common mode current".
- Click complete.
-
Set Voltage Excitation to the Cable
- Select the M harness tab and click on pin excitation.
- Choose pin voltage, select the conductor, and click OK.
- Set a voltage probe, select the conductor, and click OK.
-
Select Waveform for Pin Excitation
- Click on rectangular.
- Change the amplitude to five.
- Set the fall time, rise time, and frequency.
- Drag and drop the signal under the pin excitation.
- Rename it "conductor".
Running the Simulation
Now we are ready to mesh the model and run the simulation. Click to mesh the model, then click start and run.
Results
- Under results, we have our common mode current and conductor data.
- Right-click to use MagicBars, quiet in point, and confirm.
- Click plot to view the results.
As you can see, there is a part where we only have our data, and then when we activate the external bulk current injection, the interference is evident. We can also check the voltage, which shows readable data initially, but becomes unreadable after interference.
This concludes the example. Thanks for watching, and see you in the next video!
Hello everyone, this is Aded from OZE Engineering. In this video, I'll show you an example of bulk current injection conducted immunity simulation using ANSYS EMC+. So here we will see how an injected current affects our signal. I'm going to use the same model as in the previous crosstalk demo.
You can find the link to it in the description box below. Let's start by creating a surface and setting a current source. I'll select the surface, press Ctrl C, Ctrl V to copy it, and let's move it in the minus X direction by 100 millimeters.
Now let's go to the EMA3D tab and select the current source. I'll select the current source and click on "Current Excitation Source." Here we can give it a name. And let's keep the current type set to electric.
Select the surface and click "Complete." Next, we need to select a waveform for our current source. Under "Signals," click on "Signal." I will set the start time to half the simulation time so it will be easier to detect the effect of interference on the signal.
Let's change the amplitude to 20 and set the frequency to 100 megahertz. Now let's drag and drop the signal under the source. Place a current probe in the center of the wire. I'll name it "common mode current." Place it here and click "Complete." Now we need to set voltage excitation to the cable.
Select the "M Harness" tab. Click on "Pin Excitation." Pin Voltage. Let's click here. Select this conductor and click "OK." Now let's set a voltage probe. Click here. Select this conductor and click "OK." Next, we need to select a waveform for the pin excitation.
So let's click on "Rectangular." I'll change the amplitude to five. Here we can set the fall time, the rise time, and the frequency. And let's drag and drop the signal under the pin excitation. I'll rename it "conductor." Now we are ready to mesh the model and run the simulation.
So I'll click here to mesh the model. Click "Start" and "Run." Under "Results," we have our common mode current and conductor. If I right-click here, select "MagicBars," click "Quiet in Point," and "Confirm." Click here and click "Plot," we have our result.
As you can see, we have readable data here, and after interference, it's no longer readable. This concludes this example. Thanks for watching, and see you in the next video.
