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Ansoft PExprt入门教材：Getting Started_An Inductor Design Example.pdf
Introduction
General Procedure
Sample Problem
Results to Expect
Creating a PExprt Project
Access the Maxwell Control Panel
Start the Project Manager
Create a Project Directory
Create a Project
Enter Project Notes
Accessing the Software
Open the New Project and Run PExprt
PExprt Working Window
Input/Output Data Area
Elements Information Area
Libraries Area
Graphical Information Area
Preferences
Specify Program Paths
Specify Modeling Language
Specify Stock Libraries
Units of Measurement
PExprt Libraries
Types of Libraries
Stock Libraries
User's Stock Libraries
Design Library
Working with Libraries
Opening Stock Libraries
Creating New Stock Libraries
Saving Stock Libraries
Closing Stock Libraries
Saving the Design Library
Closing the Design Library
Modifying Elements in the Libraries
Library Element Parameters
Creating New Library Elements
Copying Elements in the Libraries
Selecting the Design Library
Design Library Role
Selecting the Design Library
Selecting Elements in the Design Library
Auto-Select Feature
Converter Input Data
Waveforms Tab
Graphical Information Area
Design Inputs
Design Inputs Tab
Design Parameters
Graphical Information Area
Modeling Inputs
Modeling Options Tab of Input/Output Data Area
Modeling Parameters
Graphical Information Area
List of Results
Starting the Design Process
Using the List of Results Tab
Graphical Information Area
Performance Results
Selecting a Design
Exploring the Performance Results
Constructive Results
Exploring the Constructive Results
Generating Models
Defining the Modeling Language
Generating the Model
Generate the Analytical Model
View the Model Netlist
Generate the FEA-based Model
View the Model Netlist
Recalculating Winding Losses
Using the Models to Recalculate Winding Loss
Using the FEA Solver
Linking with Maxwell
Linking with Maxwell Eddy Current Solver
Linking with Maxwell Electrostatic Solver
Linking with Maxwell Transient Solver
Linking with Maxwell Thermal Solver
Analysis Mode
Selecting Analysis Mode
Using PExprt with the Modeling Module
Invoking the Modeling Module
Generating a Model with the Modeling Module
Using Models from the Modeling Module in PExprt
Summary of Results
Linking with SIMPLORER
Defining the SIMPLORER Model Language
Generating the Model
Using a PExprt Model in SIMPLORER
Planar Magnetic Component Designs
Setting Up the Planar Design
Toroidal Component Designs
Setting Up the Toroidal Design
PExprt®
Getting Started:
An Inductor Design Example
September 2004
Notice
The information contained in this document is subject to change without notice.
Ansoft makes no warranty of any kind with regard to this material, including, but not limited to, the
implied warranties of merchantability and fitness for a particular purpose. Ansoft shall not be liable
for errors contained herein or for incidental or consequential damages in connection with the fur-
nishing, performance, or use of this material.
This document contains proprietary information which is protected by copyright. All rights are
reserved.
Ansoft Corporation
225 West Station Square Drive
Suite 200
Pittsburgh, PA 15219
(412) 261 - 3200
PExprt, PEmag, Maxwell, Maxwell SPICE, SIMPLORER, Equivalent Circuit Extractor, and RMx-
prt are registered trademarks or trademarks of Ansoft Corporation. All other trademarks are the
property of their respective owners.
© 2004 Ansoft Corporation. All rights reserved.
New editions of this manual include material updated since the previous edition. The manual print-
ing date, indicating the manual’s current edition, changes when a new edition is printed. Minor cor-
rections and updates incorporated at reprint do not cause the date to change.
Update packages may be issued between editions and contain additional and/or replacement pages
to be merged into the manual by the user. Pages which are rearranged because of changes on a pre-
vious page are not considered to be revised.
Edition
Date
1
2
September 2002
September 2004
Software
Revision
5.0
6.0
Getting Started: An Inductor Design Example
Conventions Used in this Guide
Field Names
Bold type is used for on-screen prompts, field names, and
messages.
Keyboard Entries Bold type is used for entries that must be entered as specified.
Example: Type 0.005 in the Nonlinear Residual field.
Menu Commands Bold type is used to display menu commands selected to
Variable Names
Emphasis and
Titles
Keyboard Keys
perform a specific task. Menu levels are separated by the “>”
symbol.
For example, the instruction “Click File>Open” means to
select the Open command on the File menu.
Italic type is used for keyboard entries when a name or variable
must be typed in place of the words in italics.
For example, the instruction “copy filename” means to type the
word copy, to type a space, and then to type the name of a file,
such as file1.
Italic type is used for emphasis and for the titles of manuals
and other publications.
Bold type, in a different font, is used for labeled keys on the
computer keyboard.
For example, the instruction “Press Return” means to press the
key on the computer that is labeled Return.
Getting Help
For more information on PExprt commands and features, refer to the PExprt online help.
To start PExprt, you must first access the Maxwell Control Panel. For more detailed information on
the Maxwell Control Panel commands, refer to the Maxwell Control Panel’s online help system.
To contact Ansoft technical support staff in your geographical area, please log on to the Ansoft cor-
porate website, http://www.ansoft.com, click the Contact button, and then click Support. You will
find phone numbers and e-mail addresses for the technical support staff. Your Ansoft account man-
ager may also be contacted in order to obtain this information.
All Ansoft software files are ASCII text and can be sent conveniently by e-mail. When reporting
difficulties, it is extremely helpful to include specific information about what steps were taken or
what stages the simulation reached. This allows more rapid and effective debugging.
iii
Getting Started: An Inductor Design Example
iv
Table of Contents
1.
2.
3.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
General Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Sample Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Results to Expect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Creating a PExprt Project . . . . . . . . . . . . . . . . . . . . . . . 2-1
Access the Maxwell Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Start the Project Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Create a Project Directory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Create a Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Enter Project Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Accessing the Software . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Open the New Project and Run PExprt . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
PExprt Working Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Input/Output Data Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Elements Information Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Libraries Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Graphical Information Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Preferences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Specify Program Paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Specify Modeling Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Specify Stock Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Units of Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Contents-1
Getting Started: An Inductor Design Example
4.
PExprt Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Types of Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Stock Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Design Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Working with Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Opening Stock Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Creating New Stock Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Saving Stock Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Closing Stock Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Saving the Design Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Closing the Design Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Modifying Elements in the Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Library Element Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Creating New Library Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Copying Elements in the Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Selecting the Design Library . . . . . . . . . . . . . . . . . . . . 5-1
Design Library Role . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Selecting the Design Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Selecting Elements in the Design Library . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Auto-Select Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Converter Input Data . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Waveforms Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Graphical Information Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Design Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Design Inputs Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Design Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Graphical Information Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Modeling Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Modeling Options Tab of Input/Output Data Area . . . . . . . . . . . . . . . . . . 8-2
Modeling Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Graphical Information Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
List of Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Starting the Design Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Using the List of Results Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
Graphical Information Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6
5.
6.
7.
8.
9.
Contents-2
Getting Started: An Inductor Design Example
10. Performance Results . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
Selecting a Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
Exploring the Performance Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4
11. Constructive Results . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
Exploring the Constructive Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
12. Generating Models . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1
Defining the Modeling Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3
Generating the Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-4
Generate the Analytical Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-4
View the Model Netlist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-5
Generate the FEA-based Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-6
View the Model Netlist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-9
Recalculating Winding Losses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-10
Using the Models to Recalculate Winding Loss . . . . . . . . . . . . . . . . . . 12-10
Using the FEA Solver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-11
13. Linking with Maxwell . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1
Linking with Maxwell Eddy Current Solver . . . . . . . . . . . . . . . . . . . . . . 13-2
Linking with Maxwell Electrostatic Solver . . . . . . . . . . . . . . . . . . . . . . . 13-4
Linking with Maxwell Transient Solver . . . . . . . . . . . . . . . . . . . . . . . . . 13-6
Linking with Maxwell Thermal Solver . . . . . . . . . . . . . . . . . . . . . . . . . . 13-8
14. Analysis Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1
Selecting Analysis Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-2
15. Using PExprt with the Modeling Module . . . . . . . . . . 15-1
Invoking the Modeling Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-2
Generating a Model with the Modeling Module . . . . . . . . . . . . . . . . . . . 15-3
Using Models from the Modeling Module in PExprt . . . . . . . . . . . . . . . 15-5
Summary of Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-8
16. Linking with SIMPLORER . . . . . . . . . . . . . . . . . . . . . . 16-1
Defining the SIMPLORER Model Language . . . . . . . . . . . . . . . . . . . . . 16-2
Generating the Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-3
Using a PExprt Model in SIMPLORER . . . . . . . . . . . . . . . . . . . . . . . . . 16-4
17. Planar Magnetic Component Designs . . . . . . . . . . . . 17-1
Setting Up the Planar Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-2
Contents-3
Getting Started: An Inductor Design Example
18. Toroidal Component Designs . . . . . . . . . . . . . . . . . . 18-1
Setting Up the Toroidal Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-2
Contents-4
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