BLDC Simulation with Motor-CAD Series: Part 2 - Motor-CAD Thermal Analysis

Hello everyone, this is Daniel Esmaili on behalf of Ozen Engineering Incorporation. I'm going to talk about the Motor-CAD application, and this section is dedicated to thermal analysis. This is a series of Motor-CAD demos.

In the last one, we talked about the electromagnetic, and in this one, we'll talk about the thermal. Today, I'm going to talk about some introductions, then the initial input on Motor-CAD, then Motor-CAD setup, and then I'll show you the results.

Just so you know, we are a light channel partner of ANSYS. We sell ANSYS software, and we also do consulting projects on multi-physical fine and element analysis, mechanical, CFD, high and low-end analysis. We also do electrical engineering and low-frequency electromagnetics.

If you have any questions or you have any projects you need help with, please feel free to let us know. Here is our contact. We are in California in the Bay Area, and you'll see this information or this contact at the end of the presentation as well.

Motor-CAD is a simulation tool that has been in the industry for over 20 years. It calculates temperature for motor components in both a transient and a steady state. Today, we'll show you the details of a steady state and how to run the transient.

It has lots of features and parameters that you can set up. I'll show you these three pictures here as part of the video. The result, and I'll skip this one since we're going to focus on a steady state. It has lots of cooling types, and you can see them here at least.

Today, we are going to use the water jacket, which could be axial or circumferential. That's what we're going to do in the simulation. As you can see, there are many other types that you can choose from. Here we have a water jacket. You can choose to use a water jacket.

You can choose from a water jacket. You can choose to use a water jacket. You can choose to use a water jacket. And after that's done, you can see the cross-section showing axial temperature here.

It will show the front view as well and some sections of the motor where you can see the temperature as a value or as a contour. Without further ado, I'll go to the simulation part. Here you can see the ANSYS Motor-CAD version 15. 12. We chose just to recap for people who didn't see the last video.

Just for 30 seconds, I'll go through some brief introductions. It is a brushless motor, and last time we talked about the electromagnetic. Today we're going to choose the thermal. It is a 18 slot motor. It has four poles, and here is the diameter for housing the stator and the rotor.

They are 19. As you can see, we have winding here, and that's in two different taps, definition and position. And this is automatic, but you can customize it. For instance, here, I may change it to 9 and you can see how things are changing in the graph.

Or on another section in the definition, we'll change it to AWG or you can change it to rectangle if you want. For today, we'll be using the diameter input and you can change numbers here and see the effect on your design. This can be taken from the datasheet, what we're showing here.

So the temperature is taken from a thesis. So back to the thermal part, as you can see, the housing is around here, and the mounting is ranged. We want to add some cooling. So we go and click on the housing water jacket. The one that I showed you, but please note that you'll see an error here.

It means that we need to specify that. So as you can see, nothing happens here. There's also a note on the housing. This is a little bit different.

Up here, there is nothing about housing water jacket, so if I go back to geometry and instead of housing round, I choose housing as water jacket, we will see changes here. Now the housing is activated, and here you see a housing water jacket tab, which didn't exist before.

So let's go back to geometry. Here is the radial view, and we can also look at the axial part. As you can see, these arrows show the cooling sections. We can also look at the 3D part as you can see.

So view the machine from a 3D point of view, and there are different features here that you can enable or disable. So once after that is done, everyone, let's move on to that. We want to show you how to do it, and we will show you how to do it in the next video.

Give the system some inputs here, which shows the natural conversion. We have the motor as a horizontal orientation, and here we have material that we chose for this motor. You can change them. For instance, the housing, you can change any component that you want.

It's a huge library, part of it is here, and there are a lot more than we can import. For the losses, here we have the losses model, and you can choose it from this formula.

These are the distribution, this interface tab, radiation, and regarding the natural convention, these are the details that we can set. This is the housing water jacket, and after that, let's go to the calculation. For calculation, we're going to do a steady-state, as I mentioned.

Please note when I once I go to a session, we have these couplings that are enabled. So we're going to use electromagnetic losses with thermal, and we're choosing model 3D. We will need to run the 2D model. I'll show you later.

Chapter city, we choose it as 3000. I'll solve the model and get back to you. I'll pause the video for now. The model is solved, and you'll get this display message, but you can delete it. As you can see, this is the schematic overview. Each color is for material. For instance, here, it's copper.

It's yellow. Here is another one that's copper. Here is is yellow as well. Here shows the winding, which is copper, so that's why it's yellow as well. Here you can see the magnet part. Yeah, they are all green, and if you go look at the red one, it's the stator lamination part.

As you can see, it shows the temperature. For instance, 68 here, 68 over here, or 64 over here. And these are these are the shaft, the dark green ones are the plates, and light blue ones are the end cap.

Here as well, so please keep in mind, these colors will say the same in the entire software unless you want to do a contour. For instance, if you go to the radial still, these are copper in the yellow, even if I hover my mouse over them, it'll show me what they are.

And as you can see, it says the 68 degrees on this magnet and 67 degrees on this magnet. This magnet is the same as the previous magnet. Here is 68 and here is 67. And this copper is 68 degrees, and here on the stator lamination, we have 66 degrees.

And these are also detailed if you want to go look at the table if you want to look at the axial section; you will see the temperature here as well. Next is the FEA simulation that we have. Please note if you have any questions, please feel free to ask me.

If you have any questions that speakers may have any questions about this video, leave them in the comments so I'll see you guys in the next video. Here, hey guys, thanks for watching. Enjoy generally, take care, take care. The solution is done, and this is the FEA model as you can see.

It shows the stator and these are the different degrees for this contour. You can look at the radial view as well. Solve thermal FEA and it'll show the radial. You can also look at the rotor and it shows you that or the axial part and shows the FEA. So there are also different functions here.

I'm not going to go through many details here, but if you have any questions, please let us know.

These are very useful tools for our analysis, and keep in mind, it has lots of different types and for each type, as I mentioned in the geometry, there are many many different variations that we have from the slot type to the rotor type to visualization.

There are several arrangements, and the sliding that we have. There is a control room gray system if we look at the front view. We had an advanced idea revised this particular human type as you can see, to mounting, housing, rotor duct, and stator duct, and different parameters that we can set.

So this is the result, and there's another way also to look at the result. I'll try to make it this video short, that's why I'm going so fast, and here you can see you know the temperature as a table or you can see the flow as a table if you want.

You can go and please keep in mind this for the housing water jacket if you want to go to the temperature, you know these are different taps, the main one for instance, the end cap, the bearing, and shaft, these are the temperature for them.

And here it's if you want to look at the axial one, the winding temperature for different windings, and this is the ground. I'm going to show you the graph for them thermal capacitance winding as well and many other results that you can check.

There is also scripting if you want to do scripting; it's a we are capable of doing that. So here, all of this talk about the software, one more thing that I want to mention is if you want to go to transient, you can choose a transient part, and we have to model size for that to run it.

Thanks for your time and I hope you enjoyed this video again, this is Daniel Esmaili on behalf of Ozen engineering corporation. Please feel free to check out our website.

We've done many projects that you can check them or if you have questions regarding the software, feel free to contact us at OzenEngine.com or you can contact us at OzenEngine.com. Thank you for watching this video and we hope you enjoyed it. Please subscribe to our channel.

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