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Report of Contributions
MT25 Conference 2017 - Timetable, Abstracts, Orals and Posters Report of Contributions https://indico.cern.ch/e/MT25-2017 MT25 Conferenc … / Report of Contributions 3D Electromagnetic Analysis of Tu … Contribution ID: 5 Type: Poster Presentation of 1h45m 3D Electromagnetic Analysis of Tubular Permanent Magnet Linear Launcher Tuesday, 29 August 2017 13:15 (1h 45m) A short stroke and large thrust axial magnetized tubular permanent magnet linear launcher (TPMLL) with non-ferromagnetic rings is presented in this paper. Its 3D finite element (FE) models are estab- lished for sensitivity analyses on some parameters, such as air gap thickness, permanent magnet thickness, permanent magnet width, stator yoke thickness and four types of permanent magnet material, ferrite, NdFeB, AlNiCO5 and Sm2CO17 are conducted to achieve greatest thrust. Then its 2D finite element (FE) models are also established. The electromagnetic thrusts calculated by 2D and 3D finite element method (FEM) and got from prototype test are compared. Moreover, the prototype static and dynamic tests are conducted to verify the 2D and 3D electromagnetic analysis. The FE software FLUX provides the interface with the MATLAB/Simulink to establish combined simulation. To improve the accuracy of the simulation, the combined simulation between the model of the control system in Matlab/Simulink and the 3D FE model of the TPMLL in FLUX is built in this paper. The combined simulation between the control system and the 3D FE modelof the TPMLL is built. A prototype is manufactured according to the final designed dimensions. The photograph of the developed TPMLL prototype with thrust sensor and the magnetic powder brake as the load are shown. -
Galvanic Isolation System with Wireless Power Transfer for Multiple Gate Driver Supplies of a Medium-Voltage Inverter Paper
電気学会論文誌●（●●●●●●●部門誌） IEEJ Transactions on ●●●●●●●●●●●●●●● Vol.●● No.● pp.●-● DOI: ●.●●/ieejeiss.●●.● Paper Galvanic Isolation System with Wireless Power Transfer for Multiple Gate Driver Supplies of a Medium-voltage Inverter ＊ ＊ ＊ Keisuke Kusaka , Student member, Koji Orikawa, Member , Jun-ichi Itoh, Member a) ＊＊ ＊＊ ＊＊ Isamu Hasegawa , Non-member, Kazunori Morita , Member, Takeshi Kondo , Non-member (Manuscript received Jan. 00, 20XX, revised May 00, 20XX) In this paper, a gate driver supply, which supplies power to multiple gate drivers, is demonstrated. Robust isolation is required in the gate drive supplies of a medium-voltage inverter in order to drive high-voltage switching devices such as insulated-gate bipolar transistors. The proposed isolation system achieves isolation with transmission coils mounted on printed circuit boards. Furthermore, the isolation system transmits power from one transmitting board to six receiving boards. In the conventional system, the number of receivers is limited to one. In contrast, multiple receivers are acceptable in the proposed system. These characteristics help reduce the of the isolation system for the gate driver supplies. This paper presents the fundamental characteristics of the isolation system. The equivalent circuit of the proposed system can be derived by applying the equivalent circuit of a wireless power transfer system with a repeater coil. In addtion, a design method for the resonance capacitors is mathematically introduced using the equivalent circuit. It is verified that an isolation system with multiple receivers can be designed using the same resonance conditions as an isolation system with a single receiver. Moreover, the isolation system is experimentally demonstrated. It is confirmed that the isolation system transmits power with a maximum efficiency of 46.9% at an output power of 16.6 W beyond an air gap of 50 mm with only printed circuit boards. -
IEEE/PES Transformers Committee
Transformers Committee Chair: Sue McNelly Vice Chair: Bruce Forsyth Secretary: Ed teNyenhuis Treasurer: Paul Boman Awards Chair/Past Chair: Stephen Antosz Standards Coordinator: Jim Graham IEEE/PES Transformers Committee Spring 2019 Meeting Minutes Anaheim, CA March 24 – 28, 2019 Unapproved (These minutes are on the agenda to be approved at the next meeting in Fall 2019) TABLE OF CONTENTS GENERAL ADMINISTRATIVE ITEMS 1.0 Agenda 2.0 Attendance OPENING SESSION – MONDAY MARCH 25, 2019 3.0 Approval of Agenda and Previous Minutes – Susan McNelly 4.0 Chair’s Remarks & Report – Susan McNelly 5.0 Vice Chair’s Report – Bruce Forsyth 6.0 Secretary’s Report – Ed teNyenhuis 7.0 Treasurer’s Report – Paul Boman 8.0 Awards Report – Stephen Antosz 9.0 Administrative SC Meeting Report – Susan McNelly 10.0 Standards Report – Jim Graham 11.0 Liaison Reports 11.1. CIGRE – Craig Swinderman 11.2. IEC TC14 – Phil Hopkinson 11.3. Standards Coordinating Committee, SCC No. 18 (NFPA/NEC) – David Brender 11.4. Standards Coordinating Committee, SCC No. 4 (Electrical Insulation) – Evanne Wang 11.5. ASTM D27 – Tom Prevost 12.0 Approval of Transformer Committee P&P Manual - Bruce Forsyth 13.0 Hot Topics for the Upcoming – Subcommittee Chairs 14.0 Opening Session Adjournment CLOSING SESSION – THURSDAY MARCH 28, 2019 15.0 Chair’s Remarks and Announcements – Susan McNelly 16.0 Meetings Planning SC Minutes & Report – Tammy Behrens 17.0 Reports from Technical Subcommittees (decisions made during the week) 18.0 Report from Standards Subcommittee (issues from the week) 19.0 -
Eletoz/Vie Patented Sept
Sept. 7, 1926. 1,598,673 O. B. BLACKWELL ET AL SECRECY COMMUNICATION SYSTEM Filed Dec. 18, 1920 R (2AA%aeaeAA 8 eletoz/vie Patented Sept. 7, 1926. 1,598,673 UNITED STATES PATENT office. OTTO B. BLACKWELL, OF GARDEN CITY, NEW YORK; DE Loss K. MARTIN, or oRANGE, NEW JERSEY; AND GILBERT S. VERNAM, OF BROOKLYN, NEw YoRK, AssGNORs TO AMERICAN TELEPHONE AND TELEGRAPH. COMPANY, A CoRFoRATION of NEW YORK, sECREGY coMMUNICATIoN sYSTEM. Application filed December 18, 1920. Serial No. 431,721. This invention relates to a signaling sys pear more fully from the detailed descrip 50 tem wherein signals are transmitted by the tion hereinafter given. agency of a high frequency wave modu The arrangements of the invention are ill lated in accordance with said signals, and lustrated in the accompanying drawing, in more particularly to a signalling system em the figure of which is shown a sendingsta ploying a plurality of high frequency tion of a system embodying the invention. 35 waves. It is the object of the invention to In the arrangements of the drawing are rovide a system of communication where shown four low frequency channels 1, 2, 3 y secret communications between stations and 4 from which the low frequency sig 10 may be had to the end that stations, other nals, such as four telephone messages, may than those designed to receive, may not re be transmitted through modulating appara 60 ceive complete, intelligible signals. tus out over a transmission line L. The Heretofore in certain types of signaling modulating apparatus is shown schemati systems, in which a high frequency wave is cally and includes the modulators M., M., 15 utilized as the agency for transmitting the Me and Ma, with which are associated the signals, he signals have been transmitted high frequency sources A, B, C, and D, 65 by electromagnetic waves of a definite high which are of suitable different frequencies. -
IP 202-1 List of Materials
Changes to the List of Materials August 3, 2021 1. Page be(2.3) a. Added Siemens i. CMR May 6, 2021 1. Page Ugn-2 a. Added Aluma-Form i. ENC Series April 27, 2021 1. Page Ugk-2.2 a. Added Prysmian i. PCT Series (15, 25, 35kV) February 9, 2021 1. Page be(4.3) a. Added Southern States single-phase SSR type recloser. February 4, 2021 1. Pages rp(1), rp(1.2) a. Revised “Cantega” to “Hubbell Power Systems”. b. Added trademark to Reliaguard. December 10, 2020 1. Page ap-2 a. Modified page number from “1.1” to “2”. November 18, 2020 1. Pages an-3 and an(3.1) a. Moved Virginia Transformer from page an(3.1) Conditional to page an-3 Full Acceptance. November 6, 2020 1. Page ae-1 a. Added Celeco i. Catalog Numbers: HSCEL, RPCEL October 26, 2020 1. Page Uhb-1.1 a. Added TE Connectivity i. Catalog Numbers: 25 kV, used with loadbreak connectors (without test point) - ELB-25- 200 series without jacket seal, ELB-25-200-ES series with jacket seal October 23, 2020 1. Page p(1) a. Added TE Connectivity (Raychem) i. Catalog number: TIL Series September 30, 2020 1. Pages a(3), ea(4), ea(5) – Added new Hendrix insulator models. a. Catalog Numbers: HPI-15VTC, HPI-15VTP, HPI-25VTC-02, HPI-35VTC-02, HPI-35VTP-02, HPI-LP-14FS/FA, HPI-LP-16F, HPI-CLP-15, HPI-CLP-17, HPI-CLP-20 July 7, 2020 1. Page cm-2 – Added Aluma-Form, Inc. -
Practical Transformer Handbook
Practical Transformer Handbook Practical Transformer Handbook Irving M. Gottlieb RE. <» Newnes OXFORD BOSTON JOHANNESBURG MELBOURNE NEW DELHI SINGAPORE Newnes An Imprint of Butterworth-Heinemann Linacre House, Jordan Hill, Oxford OX2 8DP 225 Wildwood Avenue, Woburn, MA 01801-2041 A division of Reed Educational and Professional Publishing Ltd S. A member of the Reed Elsevier pic group First published 1998 Transferred to digital printing 2004 © Irving M. Gottlieb 1998 All rights reserved. No part of this publication may be reproduced in any material form (including photocopying or storing in any medium by electronic means and whether or not transiently or incidentally to some other use of this publication) without the written permission of the copyright holder except in accordance with the provisions of the Copyright, Designs and Patents Act 1988 or under the terms of a licence issued by the Copyright Licensing Agency Ltd, 90 Tottenham Court Road, London, England WIP 9HE. Applications for the copyright holder's written permission to reproduce any part of this publication should be addressed to the publishers British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Library ISBN 0 7506 3992 X Library of Congress Cataloguing in Publication Data A catalogue record for this book is available from the Library of Congress DLAOTA TREE Typeset by Jayvee, Trivandrum, India Contents Preface ix Introduction xi 1 An overview of transformer sin electrical technology 1 Amber, lodestones, galvanic cells -
19660019609.Pdf
1966019609-002 i 0 • n l _," i i ,, i, i m i "4 VIRGINIA I I .i POLYTECHNIC t ) i INSTITUTE --. i i i i ENGINEERING EXTENSION SERIES CIRCULAR No. 4 YI (In four parts: A,B,C,D) "_ ¢ PART A ._ ! 4 f • zi PROCEEDINGS OF THE CONFERENCE ON -- The Role of 3z""muta' #on" in Space Technology AUGUST 17-21, 1964 Supported by grants from the National Aeronautics and Space Administration and the National Science Foundation; assisted in planning and presentation , by the NASA Langley Rasearch Center. 1966019609-003 ACKNOWLEDGMENTS VPI is indebted to the National Science Foundation for providing funds for travel and expenses for educational personnel attending the conference and to the National Aeronautics and Space Administration (through the • Virginia Associated Research Center) for providing funds for speakers and incidental expenses. VPI is particularly indebted to the Langley Research Center of NASA for assistance in planning the conference and to the NASA in general for providing many of the speakers and session chairmen. The helpful co-operation of Poly-Scientific Division, Litton Precision i Products, Inc. of Blacksburg, for arranging a plant tour showing their facil- ities for manufacturing slip rings and torque motors and for sponsoring the reception before the banquet is also acknowledged, i The conference committee wishes also to express its gratitude to the conference speakers, session chairmen and local personnel who have contri- i ! buted to the success of the meeting. _ The Conference Committee M. L. Collier, Jr., Professor, Engineering Mechanics J. B. Eades, Jr., Head, Aerospace Engineering T. -
Input Transformers
INPUT TRANSFORMERS MANUFACTURE JANUARY 1965 DISCONTINUED (Pile ss Card 1 on Input Transformers) The manufacture of the following input tranformers has been discontinued and it is not considered necessary to maintain cmplete information in the catalogue. For information on codes not listed below, see other cards on input transformers. Code Replaced by Code Replaced by Code Replaced by Code Replaced by 2OOA & B 215A 227C 243B 2olA to T 216A 2288 & B 244A 202A 218B 218G 229A 245A & B 203A to G 218C to F 230A & B 246A 205A to F 218R to N 231A 246C 207A 219A 2328 & B 247B 208A to L 220A 221D 233A & B 247D to H 208M 2408 220B 221D 233C 281A recom. 247K to N 208N to T 221B 224B 2333 & F 2488 208U 231B 221c 224C 233H 272C recm. 250A & B 208W & Y 221D 224A 2335 251A & D 208AA 223B 222A 233L 252B 208AB 223A to D 2348 to D 2538 208AD 224A 234A 2358 2548 208AF to AH 224B 234B 2368 255B to C 209A & B 224C 238A 2553 to H 210A to E 2258 & B 2398 2555 255K 211A to C 2268 240B to J 255K 212A & B 226B <a, 241A & B 256A 212c 618B recom. 226C 233B 241D 2578 213A to C 226D to H 2428 242B 2588 (a) Replaced by a 634B together with one PlZA710 adapter, one P16A771 instruction sheet, form Pl11869 screws and four P242132 washers. INPUT TRANSFORMERS JAUUAK!l 1965 I (File as Card 2 on In1 put Transformers) I Coda Replaced by Code Replaced by Code Replaced by Code Replaced by 259A&B 274A 292D & E 633A 633G 26OAbrB 274C 298A 298B 633B 6331 261A 275A 299B 614A 633D 262A 2JJA to C 600B 638D 263A 279A 601A 6438 DlJ6227 264D 282C 603B 6448 265A to C 285A to D 611A 64JA 64JB 2668 61 B 285G to J 612A 64JC (a> 26JA 285N 613A 65JA 6 B 268A D93983 285B 614A 661B 2698 286A 615A 662A 2JOA to C 28811 2886 61JA 664A 663B 2JOE 288C 618D 669C 2JOF 2705 288D 618B raccm. -
Field Wire Techniques
MHI DEPARTMENT OF THE ARMY FIELD MANUAL DEPATMENOFTH RMA TENAY1 DEPARTMENT OF THE ARMY * MAY 1956 *FM 24-20 FIELD MANUALl DEPARTMENT OF THE ARNMY No. 24-20 | WASHIGTON 25, D. C., 17 May 1956 FIELD-WIRE TECHNIQUES Paragraph Page CHAPTER 1. INTRODUCTION -------- 1-4 3 2. WIRE WD-1/TT Section I. Introduction -------------- 5, 6 5 II. Splicing ------------------ 7-11 6 III. Field-wire ties ------------- 12-22 23 CHAPTER 3. FIELD CABLES --------- 23-26 39 4. WIRE-LAYING AND WIRE-RECOVERY EQUIPMENTS --------- 27-35 52 5. POLE AND TREE CLIMBING Section I. Climbing equipment ------- 36-41 67 II. Pole climbing ------------- 42-48 77 III. Tree climbing ----------- 49, 50 88 CHAPTER 6. FIELD-WIRE LINE CON- STRUCTION Section I. Planning ----------------- 51-57 90 II. Orders and records --------- 58-62 96 III. Field-wire construction tech- niques ------------ 63-72 102 IV. Construction under unusual conditions -------------- 73-77 118 CHAPTER 7. MAINTENANCE OF F I E L D - W I R E SYSTEMS ------------ 78-84 122 8. CHARACTERISTICS OF COMMUNICATION EQUIPMENT Section I. Introduction ------------- 85, 86 132 II. Field telephones ---------- 87-92 133 *This manual supersedes FM 24-20, 4 October 1948. 380833°--56-1 1 Paragraph Page CHAPTER 8. CHARACTERISTICS OF COMMUNICATION EQUIPMENT-Con. Section III. Manual telephone switch- boards ------------- 93-96 140 IV. Field teletypewriters ------ 97-99 147 V. Telephone repeaters ----- 100-103 151 VI. Telegraph-Telephone Ter- minal AN/TCC-14 ------ 104-108 156 VII. Terminals ---------------- 109-111 162 VIII. Repeating coils ----------- 112-114 165 IX. Test equipment ----------- 115-119 174 CHAPTER 9. TELEPHONE SWITCH- BOARD OPERATION___ 120-124 183 APPENDIX I. -
IBM Confidential Field Engineering Education Student Self-Study Course
Field Engineering Education Student Self-Study Course IBM Confidential Field Engineering Education Student Self-Study Course IBM CDnfidential This document contains information of a proprietary nature. ALL INFORMATION CONTAINED HEREIN SHALL BE KEPT IN CONFI DENCE. None of this information shall be divulged to persons other than: IBM employees authorized by the nature of their duties to receive such information or individuals or organizations authorized by the Field Engineering Division in accordance with existing policy regarding release of company information. Common Carrier Facilities for Teleprocessing PREFACE This course is provided to acquaint Customer Engi neers with some of the important concepts of Com mon Carrier equipment and facilities as used in Teleprocessing environment. This course will also provide the Customer Engineer with a permanent reference for these facilities. Address comments concerning the contents of this publication to: IBM Corporation, Field Engineering Education, Dept. 911, Poughkeepsie, N. Y., 12602 Printed March 1966 IBM CONFIDENTIAL CONTENTS SECTION 1. TELEGRAPH SESSION 3, LONG DISTANCE SYSTEMS • 39 Review Questions 40 SESSION 1, TELEGRAPH SYSTEMS 5 Telegraph Principles 6 SESSION 4, CHANNEL FACILITIES. 41 Transmission Methods • 6 Channels Necessary • 41 Functional Units 6 Grades of Channels • 41 Polar Relays 6 Review Questions 43 Junction Boxes 6 Line Arrestor (Heat) Coils 9 SESSION 5, CIRCUIT CHARACTERISTICS • 45 Repeaters 9 Review Questions 47 Representative Type Equipment 11 Basic Telegraph Circuit -
From: Limitation Changes To: From: Authority This Page Is Unclassified
UNCLASSIFIED AD NUMBER ADA800127 CLASSIFICATION CHANGES TO: unclassified FROM: confidential LIMITATION CHANGES TO: Approved for public release; distribution is unlimited. FROM: Distribution authorized to DoD only; Administrative/Operational Use; 31 JAN 1942. Other requests shall be referred to Office of Scientific Research and Development, Washington, DC. Pre-dates formal DoD distribution statements. Treat as DoD only. AUTHORITY SOD memo dtd 2 Aug 1960; SOD memo dtd 2 Aug 1960 THIS PAGE IS UNCLASSIFIED '."Stv,, ., t ,, ., - •>• .,,ii-/...y1,i^\t. , -:'.'' >. Itil'.'fV, V, •fJ'W; , \'- ' , ..".l h „./:•' 0,1 >'.'• ,, ,1 ! l " •»> .•t "',' t'JVi, >y,.i».\}, \ <..'•, •;* ü' l ,: ' . i <!' <" '1 • '1' Vu ''L'T v\ " PIED •• .,"• '>V!;. 'I'V.l/.Vr»;»-«!", •// ? *, , ft v11 V U' V!Y ^ sEiMCES TECHNICAL INFORMATION ÄßENff ••'::-;.«'^ U 31 ON II, Ä'V?' ''" -»-' /./{ •* .*'-i<»vVw.-'.-j.' .. ;*-: t CLASSIFICATION CHANOED J —4-- .= "P0 -UN^LÄSSlEijEL'Ö •"' r ^ : 1^ FR0jyi CON'FIDE:Nf;tAL .". - I 1 SBC. s6f EOT^ -ÜP&Gt* £'.ACTGU^eä f I r: : J »n5 vi'^'-V.".'"-/^!."^' '"^".'K'A'-V^W^'T •iiß^.-iJ^fig^s^Sä! Reproduced by o WgZ&m c EH Tfl fl L flIB DOCUmtHTS OFFICE I vS di ID © | •— — ! — *—!— U\M f -VJ^=—"\ /V U WRIGHT-PATTERSON AIR FORCE BASE- DAYTON.OHIO "V r- > IS ABSOLVED ROM ANY LITIGATION WHICH ENSUE FROM ANY SSFRSNGÜ AENT ON DOMESTIC OR PATENT RIGHTS MAY BE INVOLVED. tiXiJMSMUSwnt' 's&'zttKx^hzj&syazjs*, -.V LOW CONTRAST COPY 1-1 RIGINAL DOCUMENTS AY BE OBTAINED O ii LOAN ROM •u-i :S If ^ •m L. 63157 Speech Privacy Decoding - Final Report, January 31, W42- Parts X - H (None) Heising, B. -
Galvanic Isolation System with Wireless Power Transfer for Multiple Gate Driver Supplies of a Medium-Voltage Inverter
IEEJ Journal of Industry Applications Vol.5 No.3 pp.206–214 DOI: 10.1541/ieejjia.5.206 Paper Galvanic Isolation System with Wireless Power Transfer for Multiple Gate Driver Supplies of a Medium-voltage Inverter ∗ ∗ Keisuke Kusaka Student Member, Koji Orikawa Member ∗a) ∗∗ Jun-ichi Itoh Member, Isamu Hasegawa Non-member ∗∗ ∗∗ Kazunori Morita Member, Takeshi Kondo Non-member (Manuscript received April 30, 2015, revised Sep. 12, 2015) In this paper, a gate driver supply, which supplies power to multiple gate drivers, is demonstrated. Robust isolation is required in the gate drive supplies of a medium-voltage inverter in order to drive high-voltage switching devices such as insulated-gate bipolar transistors. The proposed isolation system achieves isolation with transmission coils mounted on printed circuit boards. Furthermore, the isolation system transmits power from one transmitting board to six receiving boards. In the conventional system, the number of receivers is limited to one. In contrast, multiple receivers are acceptable in the proposed system. These characteristics help reduce the of the isolation system for the gate driver supplies. This paper presents the fundamental characteristics of the isolation system. The equivalent circuit of the proposed system can be derived by applying the equivalent circuit of a wireless power transfer system with a repeater coil. In addtion, a design method for the resonance capacitors is mathematically introduced using the equivalent circuit. It is verified that an isolation system with multiple receivers can be designed using the same resonance conditions as an isolation system with a single receiver. Moreover, the isolation system is experimentally demonstrated.