Linear electric motors: theory, design, and pract. applications
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| Main Authors: | , |
|---|---|
| Format: | Book |
| Language: | Undetermined |
| Published: |
Englewood Cliffs, NJ
Prentice-Hall
1987
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| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Item Description: | Literaturangaben |
| Physical Description: | 275 S. Ill., graph. Darst. |
| ISBN: | 0135368634 |
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MARC
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| 245 | 1 | 0 | |a Linear electric motors |b theory, design, and pract. applications |c Syed A. Nasar and I. Boldea |
| 264 | 1 | |a Englewood Cliffs, NJ |b Prentice-Hall |c 1987 | |
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Record in the Search Index
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|---|---|
| adam_text | CONTENTS
CHAPTER 1 FUNDAMENTALS OF LINEAR MOTOR
TECHNOLOGY 1
1.1 Symbols and Standards • 1
1.2 Operating Principles and Types of Linear Motors • 4
1.3 Acronyms • 6
1.4 Practical Limits on Linear Motor Performance and Applications •
6
References • 8
CHAPTER 2 INTRODUCTION TO LINEAR MOTORS 9
2.1 Basic Differences Between LEMs and Rotating Machines • 11
2.2 A Broad Classification of Linear Motors • 16
2.3 Applications of LEMs • 24
2.3.1 High-speed applications • 26
2.3.2 Low-speed and standstill applications • 27
2.3.3 Applications of energy machines • 34
References • 41
CHAPTER 3 LINEAR INDUCTION MOTORS 43
3.1 Criteria for LIM Performance • 44
3.2 Construction Details • 45
3.2.1 FlatLIMs • 45
3.2.2 Tubular LIMs • 50
3.3 Field Analysis • 55
3.3.1 An idealized LIM with an infinitely thick secondary • 56
3.3.2 An idealized LIM with a secondary of finite thickness •
57
3.3.3 The concept of current sheet • 59
3.3.4 The airgap field equation • 61
3.3.5 A design criterion: The goodness factor • 63
3.4 Certain Realistic Considerations • 64
3.4.1 Airgap leakage due to large airgaps • 64
ix
x Contents
3.4.2 Skin effect due to finite plate thickness • 65
3.4.3 Edge effects due to secondary overhangs • 66
3.4.4 End effects • 69
3.5 LIM Equivalent Circuit • 72
3.6 Performance Calculations • 74
3.7 Selection and an Application of a LIM • 77
3.8 Design Considerations • 78
3.8.1 Airgap • 78
3.8.2 Pole pitch • 78
3.8.3 Number of poles • 79
3.8.4 Overhang correction factor • 79
3.8.5 Primary core • 80
3.8.6 Steps in design • 82
3.8.7 Criteria for a good design • 82
3.9 The Tubular LIM (TLIM) • 84
3.9.1 An example of the design of a TLIM • 87
References • 89
CHAPTER 4 LINEAR SYNCHRONOUS MOTORS 91
4.1 Principle of Operation • 91
4.2 Types of LSMs • 93
4.3 Iron-Core Heteropolar LSM • 98
4.3.1 LSM with conventional field winding • 99
4.4 Permanent Magnet Heteropolar LSM (PMLSM) • 108
4.5 Air Core LSM • 113
4.6 Linear Homopolar Synchronous Motor (LHSM) • 118
4.6.1 Expressions for the parameters • 121
4.7 LSM Control • 127
4.7.1 A typical static power converter for LSM • 127
4.7.2 Encoders • 130
4.8 Note on Testing LSMs • 132
References • 132
CHAPTER 5 DC LINEAR MOTORS 135
5.1 Introduction • 135
5.2 Iron-Core Tubular Homopolar DCLM • 140
5.2.1 Design guidelines and an example • 143
5.3 Electronically Commutated DCLM • 144
5.3.1 Basic circuit equations • 146
5.4 Electromagnetic Launchers • 150
5.4.1 Principle of operation • 150
Contents xi
5.4.2 Basic equations • 153
5.4.3 Power sources and control of EMLs • 155
References • 156
CHAPTER 6 LINEAR STEPPER MOTORS 159
6.1 Advantages and Disadvantages of LSTMs • 160
6.2 Principle of Operation • 161
6.2.1 VR-LSTM • 161
6.2.2 Hybrid PM-LSTM • 164
6.3 Static Holding Thrust • 166
6.4 Modeling of LSTM • 168
6.5 Measurements of LSTM Inductances • 170
6.5.1 Average inductance • 170
6.5.2 Incremental inductance • 172
6.5.3 PM flux derivative • 172
6.6 Note on Computation of Inductances • 174
6.7 Drive Control • 180
6.7.1 Logic sequencers • 180
6.7.2 Power drivers • 182
6.7.3 LSTM control • 186
6.8 LSTM Design Guidelines • 188
6.9 Applications • 193
References • 195
CHAPTER 7 ELECTROMAGNETIC LEVITATION AND
SUSPENSION 197
7.1 Types of LLMs • 198
7.2 Certain Basic Configurations • 199
7.3 Levitation Goodness Factor and Levitation Stiffness • 202
7.3.1 Levitation goodness factor • 202
7.3.2 Static stability of the repulsion LLM • 203
7.3.3 Static instability of the attraction LLM • 204
7.4 Repulsion-Type LLMs • 205
7.4.1 Single-sided repulsion LLM with sheet track • 206
7.4.2 Simplified expressions for levitation and drag forces •
207
7.4.3 Dynamics of the single-sided repulsion LLM • 210
7.4.4 Repulsion LLM with ladder secondary • 214
7.4.5 Lift and drag forces in a LLM with ladder secondary •
216
7.4.6 Double-magnet LLM • 219
7.4.7 Null-flux LLM • 220
xii Contents
7.5 Electromagnetic Bearings (EMBs) • 222
7.5.1 Passive and active EMBs • 222
7.5.2 An example • 223
7.5.3 Certain practical considerations • 226
References • 230
CHAPTER 8 LINEAR MOTION OSCILLATORS 233
8.1 Introduction • 233
8.2 Some Basic Configurations • 234
8.3 Iron Core Homopolar LMO • 239
8.4 Permanent Magnet Linear Motor Oscillator (PMLMO) • 242
8.5 The Solenoid Linear Oscillating Motor (LOM) • 244
8.5.1 Power circuitry, dynamics, and control • 248
8.6 Repulsion-Type LOM • 249
References • 252
CHAPTER 9 TESTS ON LINEAR MOTORS 253
9.1 Belt Experiments • 254
9.2 Wheel Experiments • 260
9.3 Track Experiments • 262
9.4 Tests by Simulation • 263
References • 268
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| id | DE-604.BV002060474 |
| illustrated | Illustrated |
| indexdate | 2024-07-09T15:39:39Z |
| institution | BVB |
| isbn | 0135368634 |
| language | Undetermined |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-001347518 |
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| owner_facet | DE-91 DE-BY-TUM |
| physical | 275 S. Ill., graph. Darst. |
| publishDate | 1987 |
| publishDateSearch | 1987 |
| publishDateSort | 1987 |
| publisher | Prentice-Hall |
| record_format | marc |
| spelling | Nasar, Syed A. Verfasser aut Linear electric motors theory, design, and pract. applications Syed A. Nasar and I. Boldea Englewood Cliffs, NJ Prentice-Hall 1987 275 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Literaturangaben Elektrolinearmotor (DE-588)4128077-5 gnd rswk-swf Elektrolinearmotor (DE-588)4128077-5 s DE-604 Boldea, I. Verfasser aut HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=001347518&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Nasar, Syed A. Boldea, I. Linear electric motors theory, design, and pract. applications Elektrolinearmotor (DE-588)4128077-5 gnd |
| subject_GND | (DE-588)4128077-5 |
| title | Linear electric motors theory, design, and pract. applications |
| title_auth | Linear electric motors theory, design, and pract. applications |
| title_exact_search | Linear electric motors theory, design, and pract. applications |
| title_full | Linear electric motors theory, design, and pract. applications Syed A. Nasar and I. Boldea |
| title_fullStr | Linear electric motors theory, design, and pract. applications Syed A. Nasar and I. Boldea |
| title_full_unstemmed | Linear electric motors theory, design, and pract. applications Syed A. Nasar and I. Boldea |
| title_short | Linear electric motors |
| title_sort | linear electric motors theory design and pract applications |
| title_sub | theory, design, and pract. applications |
| topic | Elektrolinearmotor (DE-588)4128077-5 gnd |
| topic_facet | Elektrolinearmotor |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=001347518&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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