Lecture 3. - Assignment - Revision history

Marcsa at 18:52, 28 January 2020

2020-01-28T18:52:26Z

Marcsa at 19:18, 27 March 2019

2019-03-27T19:18:34Z

Marcsa: /* Sett up the solver, run the simulation */

2019-03-27T17:31:34Z

‎Sett up the solver, run the simulation

Marcsa at 13:51, 27 March 2019

2019-03-27T13:51:26Z

Marcsa: /* Steps to solve the problem */

2019-03-27T13:50:27Z

‎Steps to solve the problem

Marcsa at 08:27, 18 March 2019

2019-03-18T08:27:54Z

Marcsa at 08:18, 18 March 2019

2019-03-18T08:18:55Z

Marcsa at 22:01, 22 February 2019

2019-02-22T22:01:12Z

Marcsa at 19:38, 22 February 2019

2019-02-22T19:38:31Z

Marcsa at 19:38, 22 February 2019

2019-02-22T19:38:12Z

@@ Line 14: / Line 14: @@
 | width=50% |
 '''Instructor'''
-* Dániel Marcsa (lecturer)
+* [http://wiki.maxwell.sze.hu/index.php/Marcsa Dániel Marcsa] (lecturer)
 * Lectures: Monday, 14:50 - 16:25 (D201), 16:30 - 17:15 (D105)
 * Office hours: by request

@@ Line 22: / Line 22: @@
 * Office hours: -.
 |}
+<blockquote>
 === Purpose of the Assignment ===
 The student will learn the main steps of the finite element method, such as preparing the model (creating or importing geometry), specifying material parameters, boundary conditions, and excitation through a time-dependent simulation. Promote understanding of the source of unwanted phenomena of rotating electrical machines, like noise, vibration and heat.
@@ Line 34: / Line 34: @@
 After launching ANSYS Electronics Desktop, open the file '''PM_Motor_Example.aedt''' using the ''File <math> \to </math> Open'' menu. <br/>
 To use [https://www.ansys.com/products/electronics/ansys-maxwell ANSYS Maxwell], the ''Help'' menu and ''YouTube'' videos provide a lot of help.
+</blockquote>
 == Defining the Problem ==
 [[File:PMMotor FEMMesh.png|360px|thumb|left|alt=A possible discreatization of the problem. | A possible discreatization of the problem.]]
@@ Line 43: / Line 44: @@
 It is important to note that in the previous two examples, adaptive meshing used. However, in the case of a time-dependent (transient) problem, it is not possible to use the adaptive mesh, so we need to define the discretization of the problem with different mesh operations.
+</blockquote>
 == Set up the solver, run the simulation ==
+<blockquote>
 At the solver, the end of the time interval of calculation should be defined as well as the time step. In this example, the end time is 15 ms (''Stop time'') and 0.05 ms (100 time steps per period) is the ''time step''.
@@ Line 51: / Line 52: @@
 In order to plot the result at several time instants, it is necessary to specify in which time step we want to save the solution. If we do not do this, the last time step is saved automatically, so the field quantities (<math>\vec{A}; \vec{B}; \vec{H}</math>; ...) or other derived quantities (<math> \text{loss}, \text{energy}, ... </math>) can be plot in this instance.
+</blockquote>
 == Evaluation of results ==
 The purpose of this example is to illustrate the source of undesirable phenomena in electric machines. The source of the heat is the loss in the various parts of the machine. We have already met with the eddy current loss in the previous lecture. However, the so-called [https://en.wikipedia.org/wiki/Electrical_steel electric steels] has more components for core loss
@@ Line 77: / Line 79: @@
 |align=center | <span style="font-size:88%;">''' ''Fig. 3'' - The variation of teeth force as a function of time.'''</span> <span style="font-size:80%;color:blue">[Click to see animation.]</span>
 |}
+</blockquote>
 == References ==
 {{reflist}}

@@ Line 44: / Line 44: @@
 It is important to note that in the previous two examples, adaptive meshing used. However, in the case of a time-dependent (transient) problem, it is not possible to use the adaptive mesh, so we need to define the discretization of the problem with different mesh operations.
-== Sett up the solver, run the simulation ==
+== Set up the solver, run the simulation ==
 At the solver, the end of the time interval of calculation should be defined as well as the time step. In this example, the end time is 15 ms (''Stop time'') and 0.05 ms (100 time steps per period) is the ''time step''.

@@ Line 33: / Line 33: @@
 === Steps to solve the problem ===
 After launching ANSYS Electronics Desktop, open the file '''PM_Motor_Example.aedt''' using the ''File <math> \to </math> Open'' menu. <br/>
-To use '''ANSYS Maxwell''', the ''Help'' menu and ''YouTube'' videos provide a lot of help.
+To use [https://www.ansys.com/products/electronics/ansys-maxwell ANSYS Maxwell], the ''Help'' menu and ''YouTube'' videos provide a lot of help.
 == Defining the Problem ==

@@ Line 32: / Line 32: @@
 === Steps to solve the problem ===
-After launching ANSYS Electronics Desktop, open the file '''PM_Motor_Oktatas.aedt''' using the ''File <math> \to </math> Open'' menu. <br/>
+After launching ANSYS Electronics Desktop, open the file '''PM_Motor_Example.aedt''' using the ''File <math> \to </math> Open'' menu. <br/>
-To use ANSYS Maxwell, the ''Help'' menu and ''YouTube'' videos provide a lot of help.
+To use '''ANSYS Maxwell''', the ''Help'' menu and ''YouTube'' videos provide a lot of help.
 == Defining the Problem ==

@@ Line 38: / Line 38: @@
 [[File:PMMotor FEMMesh.png|360px|thumb|left|alt=A possible discreatization of the problem. | A possible discreatization of the problem.]]
-In this case, the geometry and definitions/settings of problem are pre-defined. The reason for this is to avoid lengthy setup and the basically the purpose of the example is to look at sources of unwanted phenomena (force, loss) as an example of an rotating electric machine.
+In this case, the geometry and definitions/settings of the problem are pre-defined. The reason for this is to avoid lengthy setup and basically, the purpose of the example is to look at sources of unwanted phenomena (force, loss) as an example of a rotating electric machine.
 Before and during the run, we briefly review the settings of the problem.
-It is important to note that in the previous two examples, adaptive meshing used. However, in the case of time-dependent (transient) problem, it is not possible to use the adaptive mesh, so we need to define the discretization of the problem with different mesh operations.
+It is important to note that in the previous two examples, adaptive meshing used. However, in the case of a time-dependent (transient) problem, it is not possible to use the adaptive mesh, so we need to define the discretization of the problem with different mesh operations.
 == Sett up the solver, run the simulation ==
@@ Line 48: / Line 48: @@
 At the solver, the end of the time interval of calculation should be defined as well as the time step. In this example, the end time is 15 ms (''Stop time'') and 0.05 ms (100 time steps per period) is the ''time step''.
-You may also need to set the nonlinear solver, because the <math> {B} - {H} </math> relation of the stator and rotor steel is nonlinear. In this case the relative premeability is space dependent, as you can see in Fig. 1.
+You may also need to set the nonlinear solver, because the <math> {B} - {H} </math> relation of the stator and rotor steel is nonlinear. In this case, the relative permeability is space dependent, as you can see in Fig. 1.
-In order to plot the result at several time instants, it is necessary to specify in which time step we want to save the solution. If we do not do this, the last time step is saved automatically, socthe field quatities (<math>\vec{A}; \vec{B}; \vec{H}</math>; ...) or other derived quantities (<math> \text{loss}, \text{energy}, ... </math>) can be plot in this instance.
+In order to plot the result at several time instants, it is necessary to specify in which time step we want to save the solution. If we do not do this, the last time step is saved automatically, so the field quantities (<math>\vec{A}; \vec{B}; \vec{H}</math>; ...) or other derived quantities (<math> \text{loss}, \text{energy}, ... </math>) can be plot in this instance.
 == Evaluation of results ==

@@ Line 2: / Line 2: @@
 |-
 | colspan=2 align=center |
-<font color='blue' size='+2'>Permanent Magnet Motor</font>
+<font color='blue' size='+2'>Analysis of Permanent Magnet Motor</font>
 |-
 | align=center |
@@ Line 9: / Line 9: @@
 [[File:PMMotor Prius2004.gif|550px]]
 |-
-|align=center | Animated cut through diagram of a typical fuel injector <ref>https://upload.wikimedia.org/wikipedia/commons/2/29/Injector3.gif</ref>
+|align=center | <span style="font-size:88%;">'''Drive unit of Audi A3 Sportback e-tron drivetrain.'''</span><ref>Audi Technology Portal - https://www.audi-technology-portal.de/en/mobility-for-the-future/audi-future-lab-tron-experience_en/audi-a3-e-tron_en</ref>
-|align=center | Animated cut through diagram of a typical fuel injector [Click to see animation].
+|align=center | <span style="font-size:88%;">'''Operation of a permanent magnet synchronous motor.'''</span> <span style="font-size:80%;color:blue">[Click to see animation.]</span>
 |- valign=top
 | width=50% |
@@ Line 23: / Line 23: @@
 |}
-=== Aims of Assignment ===
+=== Purpose of the Assignment ===
-A hallgató megismerje a végeselem-módszer főbb lépéseit, mint a modell előkészítése (geometria elkészítése vagy importálása), anyagparaméterek, peremfeltételek és gerjesztés megadása az üzemanyag befecskendező szolenoidjának szimulációján keresztül.
+The student will learn the main steps of the finite element method, such as preparing the model (creating or importing geometry), specifying material parameters, boundary conditions, and excitation through a time-dependent simulation. Promote understanding of the source of unwanted phenomena of rotating electrical machines, like noise, vibration and heat.
-=== A feladat megoldásához szükséges ismeretek ===
+=== Knowledge needed to solve the problem ===
-* A végeselem-módszer lépései;
+* The steps of the finite element method;
-* A sztatikus mágneses térre vonatkozó elméleti ismeretek (anyagok definiálásához, gerjesztés megadásához);
+* Theoretical knowledge of time-varying magnetic fields (for defining materials, excitation);
-* A geometria elkészítéséhez CAD rendszer ismerete.
+* Basic knowledge of electrical machine operation.
-=== A feladat megoldásának lépései ===
+=== Steps to solve the problem ===
-Az ANSYS AIM elindítását követően kiválasztjuk az elektromágneses (Electromagnetics) feladatot a ''Start'' gombra kattintva.<br /> A következőkben bemutatott lépésektől eltérően is megvalósítható a feladat. Az AIM használata során a feladat elkészítésében segítséget nyújtanak a különböző lépések során megjelenő üzenetek.
+== Defining the Problem ==
-== A geometria elkészítése ==
+In this case, the geometry and definitions/settings of problem are pre-defined. The reason for this is to avoid lengthy setup and the basically the purpose of the example is to look at sources of unwanted phenomena (force, loss) as an example of an rotating electric machine.
-== Az anyagok definiálása ==
+Before and during the run, we briefly review the settings of the problem.
-== A gerjesztés megadása ==
+It is important to note that in the previous two examples, adaptive meshing used. However, in the case of time-dependent (transient) problem, it is not possible to use the adaptive mesh, so we need to define the discretization of the problem with different mesh operations.
-== A megoldó beállítása, a szimuláció futtatása ==
+== Sett up the solver, run the simulation ==
-== Az eredmények kiértékelése ==
+At the solver, the end of the time interval of calculation should be defined as well as the time step. In this example, the end time is 15 ms (''Stop time'') and 0.05 ms (100 time steps per period) is the ''time step''.