In the Menu 'Data to record', I select the term 'Standard fourier transform' and all terms in the 'Fields' and the term 'output power' in the 'Poynting vector and power'. After the simulation, I got a Struct where the ‘‘E’’ is composed by a complex array with the shape 35433 * 3 * 31. I know that the '35433' is the number of elements in the detector, '3' refers to the 'Ex, Ey and Ez', '31' refers to the number of wavelength of light (a total of 31 lights with different wavelength are simulated).

However, where is the 'frequency'? According to the guidance from https://support.lumerical.com/hc/en-us/articles/360034902393-Frequency-domain-Profile-and-Power-monitor-Simulation-object

The output should be a function of frequency. So, what is the meaning of the output with shape 35433 * 3 * 31, why is the frequency dimension missing ? The screenshot of the setting is attached.

Thank you very much!

]]>I have to assign 2 motion set-ups on a Ansys Maxwell model, to Ansys Twin Builder. As there is a transient-transient co-simulation, I cannot define Motion Set-Ups in Maxwell, and I will have to define the Motion Set-Up in Twin Builder. I then get this error on Twin Builder:

I know that two motion set-ups are not possible, but are there any other methods to assign two motion set-ups? Will really appreciate all forms of help. Thank you everyone in advance.

]]>Iam trying to simulate my motor in RMxprt Desing, but after entering all parameters of the motor and pressing Analyze all, it gives following error message:

Project1 (C:/Users/Administrator/Documents/Ansoft/)

RMxprtDesign1 (Brushless Permanent-Magnet DC Motor)

[error] While parsing expression: "-nan(ind)NewtonMeter", an error was found near character 9. 'nan' is not a function name. (5:44:20 下午 一月 17, 2022)

[info] Normal completion of simulation on server: Local Machine. (5:44:20 下午 一月 17, 2022)

Iam using Ansys Electronics Desktop version 19.2. What is wrong with it ? Is there some parameter still missing?

]]>I'm an undergrad research assistant and I'm working on a research project with SynRMs, and I'm back again with yet another question. At the moment I'm trying to do System Coupling between Maxwell and Fluent for thermal analysis. I'm following the steps described in the "Permanent Magnet Electric Motor Co-Simulation (Maxwell-Fluent)" in the System Coupling Tutorial PDF from ANSYS Learning Hub to set up my own simulation model. I'm done setting up the Maxwell2D model and setting up System Coupling for it, but I'm stuck when it comes to Fluent. In the tutorial, an archived Pre-Coupling Fluent file is provided ("ElectricMotorSteadyStationary.cas.h5"), but since I'm not working on the tutorial and I'm simply following the steps to set up my own model, how do I go about creating a Fluent case file for myself?

I've added a screenshot from the tutorial PDF to make it clear what step and file I'm referring to.

Thank you! :)

I have multiple capacitors connected in a model, and I am trying to find the capacitance between different plates, but I am not sure I understand it correctly, how does ansys maxwell compute the capacitance matrix? what are the non-diagonal values and why are they negative?

This is an example of my matrix that I am trying to understand:

Can anyone tell me why the solid loss values are different in different geometry modes of Ansys Maxwell(XY, Cylindrical Z and 3D)?

Details of design is as follows:

Core - E/30/15/7

Foil Conductors - 0.81mm thick, 18mm width, 3 layers with total mean turn length of 150.79mm

In 2D-Cartesian XY - Solid Loss = 1.528319mW , R = 18.635186 mOhm (Scaled values, model depth = 7.3mm)

In 2D-Cylindrical abt Z - Solid Loss = 0.61303mW, R = 7.4748 mOhm

In 3D - Solid Loss = 0.299445mW, R = 3.590353mOhm

Solver type = Eddy Current

Frequency = 1MHz

Also, the DC resistance is coming out to be same in all the geometry modes, but not the AC resistance values. Why is it so?

I have also attached the figures for reference.

in SIwave I can have non-ideal RLC elements. Each can have a parasitic capacitance, inductance and resistance.

From the documentation it does not become clear to me how these parasitics relate to the ideal component. I'd suspect e.g. that a parasitic resistance for a capacitor is in shunt configuration and for an inductor in series configuration. In this way the element would be more non-ideal when the frequency approaches zero. The other way round it would become more non-ideal at higher frequencies.

Can anybody shed some light on this? Thanks.

Georg

]]>in plain HFSS, I can turn a port into a single-port model by assigning a *.s2p Touchstone file to it. This describes a two-port model.

Most capacitor/inductor vendors provide such files to characterize their components. Some are in shunt configuration and some in series configuration.

Question: How does HFSS know whether the *.s2p-file is in shunt or series configuration?

Thanks for your answer.

]]>I AM TRYING TO CREATE IPM SYNCHRONOUS MACHINE WITH OUTER ROTOR STRUCTURE. INITIALLY RMXPRT MENU SHOWING BOTH OUTER ROTOR AND INNER ROTOR OPTION IN STRUCTURE. AFTER SELECTION OF OUTER ROTOR IN STRUCTURE THE OPTION FOR MAGNET DIMENSION CONVERTED TO WINDING IN ROTOR SECTION. IF ANYBODY HAVE ANY IDEA ABOUT THIS, PLEASE HELP ME

data = hfss.post.get_solution_data_per_variation(soltype='Modal Solution Data', setup_sweep_name='Setup1 : Sweep', ctxt="Sweep", sweeps={ 'Freq': 'All', 'port_height': 'All' }, expression='re(Gamma(1))' )

does anyone know if it is possible to simulate a core memory with Maxwell in the Solution Type Transient?

To do this, Maxwell would have to correctly account for the remanence of the core material.

As far as I understand it, only part of the hysteresis curve can be defined in Maxwell and not the whole hysteresis curve ;-)

Best regards

HG2

]]>

Hope you are all safe and healthy.

I am working on toroid inductor simulation (Maxwell 3D eddy-current solution) to understand the eddy current and the loss created in my laminated core. So, what is the difference between mag_J and complexMag_J? I saw the calculation definition of Mag(AtPaths(Smooth<Jx, Jy,Jz>,Phase)), and Mag(Smooth(<Jx,Jy,Jz>). I couldn't really understand what those means. Could you help me out understand the difference please?

Also, I couldn't find the definition for ohmicLoss, how is ohmicLoss defined?

Thank you for your help.

]]>Our team recently started with the setting up of a linear induction motor(LIM). For this, we have set up transient analysis, our final aim from this simulation will be to calculate thrust produced by LIM.

In the below image black cuboid structure is the track that is placed at some distance from the LIM.

While setting up motion in track (while assigning band) given below error pops up-

Please let us know at what step we are doing mistakes.

A detailed step to set up the simulation for LIM based on the given above results requirements will be really helpful for us.

Thank You in advance for your time.

Regards,

Aayush

]]>I have an anlytical Model of a specific motor, based on saturated Magnet Equivalent Circuit(MEC). This analytical Model computes the Ld, Lq values. I need to validate this model by comparing the values obtained by FEM(Ansys Maxwell).

I am wokring with transient solution of Maxwell 2D to compute dq inductance. As show in the below figure I found the values of Ld, Lq. The problem is I am getting values from ansys maxwell different form analytically computed one. May be because FEM is a non linear solution(with BH curve). I cannot do a linear solution in maxwell, because if I do so I have very high flux density near the bridges of rotor in my motor.

How can I compute dq axis inductance from Ansys Maxwell which could be nearly equal to values obtained by analytical model.

Any suggestion from your side will be helpful. Thanks.

]]>I am trying to use the Mosfet level 1 component with Ansys circuit design. I am a little confused about what values I have to use in the instance parameter. For example, for drain and source diffusion area, etc I cannot find these values in the component datasheet either. Could someone please let me know how these parameters are calculated or any related information?

Thanks

]]>I am optimizing an IPMSM using genetic algorithm in Maxwell. I need to compare it with a benchmark design so I kept the copper losses the same by defining the current related to slot area. So when the slot area changes, the current will change in a way to keep the copper losses constant. However, in this case another problem arises.

The problem is the optimum point has larger slot area leading to higher input current. And this current is higher than the inverter limit. Thus, my question is how I can put the inverter current and voltage as a limit (constraint)???

I need to define the current as a variable which changes by slot area and is limited by a maximum current.

I do appreciate your help in advance.

Regards,

smks1991

]]>I need to see the vibrations induced in the rotor because of short circuit current and changing grid parameters, I am not able to select the correct platform. I was doing the simulation using harmonics module, but it does not allow using frequency or short circuit current for checking the vibration studies.

Can someone please guide me in this regard.

Let me know if you have any questions.

]]>I plot them on a 2D field report.

When I export the phase to a .csv file I get only 0 and 180 degrees. Is it something that should be fixed in the field calculator?

]]>I'm trying to export an axial flux induction motor with two stators and a double sided rotor using RMxprt. I selected double side rotor, which works, but there is only one stator. How can I get the second stator on the other side?

Note: I'm generating a 3D simulation.

]]>Recently, I’m building a remote (lives outdoor) scientific device that collects environmental data. I have an old original Pi B from about 2011 that I am using as an ethernet connected data logger. Everything works well on the bench - until I connect the internal 5V supply.

I have +12V available with plenty of capacity to run the Pi. (Currently running on a lab PSU so I can monitor voltage and current). The 12V feeds a 7805 regulator - - which admittedly gets warm but these are not the most thermal efficient devices in the world. I am getting a solid 5V out of the regulator and I have adapted a micro USB plug/cable only using the 0 and 5V power leads. (Green and White are not connected), The screen is tied to 0V.

The Pi does indeed boot up and all appears OK, except that all the USB interfaces and Network interface shut down a few moments after they startup. And it is bog standard except for a MCP3008 ADC plugged into the GPIO which is working well when I plug the Pi into a wall USB socket (the type which is a supplement to a 13A mains socket). i.e. nothing shuts down.

There is no significant increase in current when I plug the pi in, it should be operating well within the 1.5A capacity limit of the regulator.

Anyone has ideas of it? Many thanks.

]]>Error when calculating regions like highlighted region

Is there a way around this problem or am I missing something?

Eagerly waiting for help,

Thanks in advance,

KarthikS

]]>I am currently writting my Masterthesis about the development of a Planar Motor and I have a few Questions regarding the Calculation of the Force acting on the mover.

As you can see from the picture I created 8 Box elements which are magnetized in a Halbach configuration ( Yellow magnets are bulks and green and red are the poles; Hc = -790000, Br = 1.41, Height = 3mm, Polwidth = 10mm, Bulkwidth = 3mm ). The Halbach array constituetes my mover and the hexagonal copper coil at the bottom constitutes part of my Stator ( Innerradius 1.882mm, Outerradius = 3.707mm, heigth 0.07mm and excitation of 5A). The coil sits at the center of the righthand pol and the mover is lifted 1.5mm above ground (XY-Plane).

My goal is to calculate the Force and Torque acting on the center of the mover. Therefore I selected all magnet objects and assigned a Force parameter to them. To double check I also assigned a Force parameter to the right hand pol as well as the coil (which is supposed to receive . I got the following results:

Force1 (On all Magnets): F(x) = 0.0165N, F(y) = 0.0228N, F(z) = 0.902N

Force2 (On righthand Pol): F(x) = 4.27N, F(y) = 4.169N, F(z) = -15.088N

Force3 (On coil): F(x) = -0.00123N, F(y) = -0.00056N, F(z) = -0.0059N

These values seem a little bit weird to me. My best assumption for Force2 is that it is so high because it is mainly the Force of the magnets acting on each other, which seem reasonable. However I am not sure if Force1 is really the force acting on the center of mass of the mover. In terms of direction it seems valid ( See picture below ), but I would have assumed that the force on the coil is roughly equal but opposite, but it is much smaller in magnitude and also showing in a different direction.

I suspect that I am not modeling the mover corrently. Currently I am just modeling it as seperate boxes and not telling the simulation that it is one ridgid connected piece.

So my Questions are:

- Is my analysis wrong and Force1 is in fact the correct Force value and if not how do I compute the forces correctly?
- How can I model the mover as one connected piece?

Your help with this would be very much appriciated! If you have any further questions regarding the details, just let me know!

Best regards,

Tim

]]>I am simulating an U-magnet and am having problems with the way the magnetic force is calculated in the model.

My model has: N=400 (turn), I=0,3(A), g=0,5(mm), A=0,0022 (m2) and m=1.04kg.

I calculated the force according to the formula: F=μ0*N*N*I*I*A/(4*g*g) but the result is different with Ansys Maxwell result.

Can any help me? Thanks!

]]>I have two questions:

1- Does Icepak in AEDT support co-simulation with Simplorer? (i.e. similar to an actual transient to transient link).

2- Can I link the IcePak ROM model to the actual IcePak 3D model ? I need to see the effect of real time simulation in Simplorer on the 3D model in IcePak.

Best Regards,

Haitham

]]>I need to connect Maxwell with Matlab to get results. I have my control algorithm and inverter in Matlab, and I design my motor in Maxwell. Is it possible to connect Maxwell with Matlab to do simulation? If yes, how can I do it?

]]>i was wondering if there is a way to export the ansys electronics geometry to the motor cad software in order to get the Thermal network automaticaly generated from Motor cad and calculate my geometry hot spot temeprture

Thanks

]]>I designed my antenna in hfss with a small height of 200mm in the FM band and it'is not matching so I matched it with Ansys circuit and now I wanna transfer my matching circuit to Ansys hfss to see the radiation diagramme but I didn't find how to do it.

so if you can help me by anything please.

S11 before matching :

ansys circuit filter and S11 after matching

thank you .

]]>