1998 Applied Power Electronics Conference and Exposition (APEC '98) Professional Education Seminars What's New Registration Accommodations Exposition Conference Highlights More Information Seminars Rap Sessions Conference at a Glance Technical Sessions Conference Committee Program Committee Conference History Call for Papers Site Map APEC'98 Home APEC Home SUNDAY 9:30am-1:00pm SUNDAY 2:30pm-6:00pm MONDAY 8:30am-12:00 noon S.1 Understanding Basics of Adjustable Speed and Vector-Controlled Induction and Synchronous Motor Drives S.6 Servo Systems and Control of AC Motors S.11 Electrical Environments: Converter and Motor Drive Quality and Long Life Enhanced by Designing for Transients, MHD, Radiation, ESD, Corona, Lightning and Faults S.2 Switchmode Design and Layout Techniques - Part 1 S.7 Switchmode Design and Layout Techniques- Part 2 S.12 Reducing Line Harmonics for Regulatory Compliance: Single-Stage High-Frequency Solutions S.3 Introduction to Magnetic Component Design Part 1 S.8 Introduction to Magnetic Component Design Part 2 S.13 Integrated Magnetics - Advanced Design Topics S.4 Rapid Product Development Using Design for Improved Manufacturability Techniques S.9 Results-Focused Exhibiting - How to Use Tradeshows to Increase Sales, Reduce Selling Costs and Build Market Share Fast! S.14 Hybrid Packaging of Power Electronics S.5 Analysis of Transient Processes and Dynamic Behavior of Converter Systems-General Approach S.10 Linear and Nonlinear Current Programming S.15 Guidelines for Selection of On-Board Power Modules PROFESSIONAL EDUCATION SEMINARS APEC '98 features 15 professional education seminars with a broad range of topics ranging from motor drives, magnetics, and switched mode converters, to product development, marketing, and tradeshow advertising. As always, APEC seminars offer a practical mix of theory and real-world applications for the power electronics industry professional as well as the practicing engineer. And, unlike other conferences that charge a fee for each seminar, one low fee gains you admission to any and all seminars, along with the notes of every seminar. Whether you want to review an important topic area, broaden your understanding of a neighboring discipline, or take advantage of the practical experiences of experts in the field, the APEC'98 seminars are a must for every conference attendee. Please note the room assignments listed are tentative and subject to change. Please check with the registration desk at the conference for the latest information. Professional Education Seminars - Session One Sunday, February 15, 9:30 AM 1:00 PM S1 Understanding Basics of Adjustable Speed and Vector-Controlled Induction and Synchronous Motor Drives Ned Mohan, University of Minnesota, Minneapolis, MN Marina Ballroom 1 This tutorial is intended for professionals who wish to get a clear understanding of ac drives in using and/or designing them for efficient and high performance applications. Educators will be able to teach electric drives as a first course, without the prerequisite of electric-machine theory. The electric drives market is growing at a healthy rate of 25% per year as users discover the benefits of adjustable speed operation. However, understanding their operation and design is impeded by old-fashioned approaches which are better suited for line-fed ac motors. In this tutorial, a new but tested approach is presented wherein the explanation of space-vector theory is simplified and then applied from the very beginning of the discussion. Tutorial attendees will gain the following benefits: 1. A physical and fundamental understanding of torque-production and voltage-induction in ac motors for their control in efficient and high-performance applications, And, 2. Continuity to much more sophisticated concepts of vector control and voltage-space-vector pulse-width-modulated inverters in ac-motor drives. This tutorial is designed with brief exercises for an entry-level audience. However, even those with advanced understanding of drives will find this tutorial very useful. S2 Switchmode Design and Layout Techniques - Part 1 Bruce Carsten, Bruce Carsten Associates Inc., Corvallis, Oregon Marina Ballroom 2 The principal focus of the seminar is on the reduction of EMI by design, rather than as after-the-fact "band-aid" fixes. EMI Susceptibility is also touched upon, as well as other useful design techniques and circuits for high frequency power converters. In a switchmode supply only about one third of the components affecting EMI are on the schematic diagram and the bill of materials; another third are the parasitics in the components you build or buy, while the final third are generated by the physical design, PC board layout and component mounting. Usual sources of conducted and radiated EMI in switchmode supplies are identified, with numerous practical approaches to minimize EMI presented. If EMI is given full consideration from the inception of a design, the time and cost savings can be very significant. S3 Introduction to Magnetic Component Design - Part 1 Rudy Severns, Springtime Enterprises Inc., Cottage Grove, Oregon Marina Ballroom 3 Magnetic components are a fundamental part of almost all power electronic circuits. This course provides a basic introduction to the design of magnetic components for engineers who have little or no previous design experience with magnetic components. The first part of this course begins with a review of basic magnetic circuit principles. An overview of magnetic core materials , cores shapes, losses, winding structures and materials, and insulating materials is then presented. S4 Rapid Product Development Using Design for Improved Manufacturability Techniques Ted Squires, Effective Product Foundations Inc., Northbrook, Illinois Marina Ballroom 4 This seminar is designed for professionals who recognize the need to rapidly develop robust product in order to successfully compete in today's global economy. While developing the basic product concept may not seem to be a serious problem for the trained power electronics engineer, translating that concept into a product which will meet customer expectations, and simultaneously produce a profit can be a significant professional challenge. Furthermore doing it under increasingly demanding schedules now taxes the most experienced professionals. Designing For Improved Manufacturability or DFIM is a concept with proven techniques that can be used by designers to ensure robust and manufacturable designs. At the same time, this seminar introduces recently evolved concepts that have contributed to rapid product development cycle times in several, best-in-class companies. After a brief overview of DFIM principles and practices, the seminar will concentrate on two real product case studies: an uninterruptible power supply, and a complex scientific instrument. The studies will focus on results obtained by usage of DFIM metrics combined with classic continuous improvement, QFD, design of experiment and producibility risk assessment tools. Significant time will be spent reviewing evolving fast cycle product development methodologies. S5 Analysis of Transient Processes and Dynamic Behavior of Converter Systems-General Approach M. Slonim, Ben-Gurion University of the Negev, Beer Sheva, Israel Embassy West The topics of this seminar are the analysis of transient processes and dynamic behavior in converter systems. These problems are especially complicated because of the nonlinearity of converters and differences in the converters' topologies. The method to be discussed is named "Method of Difference Equations". The method is developed on the physical basis that any converter under all conditions may be discussed as a system whose structure varies periodically. The following examples are intended to be discussed: transient processes and dynamic behavior of rectifiers and cycloconverters; parallel and series inverters; choppers and dc to dc converters including high frequency converters; faulty transient processes in rectifiers and inverters. The practical topologies of converters will be covered using the detailed mathematical analysis of the problem and its experimental verification. The analytical solution will be investigated and possible operational modes of the converter, including its stability, will be found. Comparison between analytical and experimental results will be used for accuracy estimation. Application of "Method of Difference Equations" for analysis of very complicated systems of all types of the converters; conditions for existence of exact analytical and approximate solutions; advantages of the method for reducing the time and error of computer calculations - all these problems will be discussed in the final part of the Seminar. Professional Education Seminars Session Two Sunday, February 15, 2:30 PM 6:00 PM S6 Servo Systems and Control of AC Motors Dal Y. Ohm, Consultant, Blacksburg, Virginia Marina Ballroom 1 The purpose of this course is to provide the fundamental principles as well as in-depth understanding of required knowledge to apply and analyze AC motor drives, including basic feedback control systems, position and velocity control, and sizing and motion profile. In addition, the course content includes torque production in DC and AC motors ( Brushless, Switched Reluctance, and Induction Motors), power electronics, feedback sensors, and electronic commutation algorithms. This course is intended for design engineers and field engineers in motion control systems who wish to clarify basic concepts and learn up-to-date technologies used in modern motor drives and applications. Practical and useful procedures in selecting, designing, and tuning the motor drive and servo systems are emphasized. S7 Switchmode Design And Layout Techniques Part 2 Bruce Carsten, Bruce Carsten Associates, Corvallis, Oregon Marina Ballroom 2 The principle focus of the seminar is on the reduction of EMI by design, rather than as after-the-fact "band-aid" fixes. EMI Susceptibility is also touched upon, as well as other useful design techniques and circuits for high frequency power converters. In a switchmode supply only about one third of the components affecting EMI are on the schematic diagram and the bill of materials; another third are the parasitics in the components you build or buy, while the final third are generated by the physical design, PC board layout and component mounting. Usual sources of conducted and radiated EMI in switchmode supplies are identified, with numerous practical approaches to minimize EMI presented. If EMI is given full consideration from the inception of a design, the time and cost savings can be very significant. S8 Introduction to Magnetic Component Design - Part 2 Rudy Severns, Springtime Enterprises Inc., Cottage Grove, Oregon Marina Ballroom 3 Magnetic components are a fundamental part of almost all power electronic circuits. This course provides a basic introduction to the design of magnetic components for engineers who have little or nor previous design experience with magnetic components. The second part of the course introduces the design process and how to design transformers using the Area Product as a starting point. Examples are used to illustrate the process. Part II ends with a review of high frequency effects and their impact on design. S9 Results-Focused Exhibiting - How to use Tradeshows to increase sales, reduce selling costs and build market share fast! Jefferson Davis, Competitive Edge, San Bruno, California Marina Ballroom 4 In today's competitive marketing arena, tradeshows are your most effective marketing - if done properly. However, most companies aren't really getting the results they want. Why not? Research has found that the average exhibitor has received little or no formal education on how to make tradeshows payoff. This seminar presents a fast paced and stimulating journey into what it really takes to make tradeshows payoff. You'll discover the real economics of tradeshows and how they actually reduce your selling costs. You'll learn the 3 dynamics that make tradeshows unbeatable. You'll gain practical tools to help set goals, develop action plans, use high-impact preshow marketing to fill your booth with qualified buyers, capture better leads and close more sales. If you want to get more from every dollar and every hour you invest in tradeshows, then this is a program you can't afford to miss! S10 Linear and Nonlinear Current Programming F. Dong Tan, TRW Space and Technology Division, Redondo Beach, California Embassy West Recent models for current programming allow point-to-point substitution of the switches by a set of linear controlled sources, which is accurate to one half of the switching frequency. A nonlinear compensating ramp enhances the stability and allows extensions to ac/dc and dc/ac converters. While representing significant improvements, these methods appear subtle even to an experienced person and difficult to understand fully. This seminar will bridge the gap. All aspects of linear and nonlinear current programming will be covered in detail, including a generic model for SPICE-based simulation of switches and the key transfer functions. Both will be available to the public for the first time. Extensive analytical, simulation, and measurement results will be used to demonstrate key steps in real life designs. Professional Education Seminars - Session Three Monday, February 16 8:30 AM 12:00 Noon S11 Electrical Environments: Converter and Motor Drive Quality and Long Life Enhanced by Designing for Transients, MHD, Radiation, ESD, Corona, Lightening, and Faults Art Brockschmidt, Boeing Defense & Space Group, Seattle, Washington North Ballroom A Power supplies, converters, inverters, motor drives, and their designers all have one commonality -- they are often subjected to a hostile electrical environment during operation. Failures continue to occur in some new products due to lack of attention to these stresses. These environments are described in a fast paced survey, including ongoing audience participation, of what your design should consider to survive and operate properly. Intended for all levels of expertise, the intent is to provide an awareness of these potentially destructive electrical effects, with over 40 references for the audience to pursue when in-depth knowledge is required. Throughout the presentation, specific examples of and techniques to counteract the effects of these electrical environments will be discussed. Show and tell hardware examples will be available during the break. Limitations of standard design techniques will also be discussed, such as: parasitics of protection circuitry, grounding and bonding in a lightning environment, and possibility of FET breakdown even in a well-snubbed circuit. The final few minutes as time permits will be a discussion and sharing of specific examples of environments that have caused grief to the members of the audience. S12 Reducing Line Harmonics for Regulatory Compliance: Single-Stage High-Frequency Solutions Richard Redl, ELFI S.A., Onners, Switzerland North Ballroom B This seminar gives a comprehensive overview of the main line-harmonics standards and the most cost-effective ways of complying with them. First, a review of the standards is presented, including the latest developments in EN61000-3-2 (introduction of a new equipment class and the change in the date of enforcement). The seminar then focuses on single-stage high-frequency solutions for power supply, battery charger and electronic ballast applications. Single-stage circuits are less expensive than two-stage circuits and have smaller size and weight than low-frequency solutions; also the undesirable noise interaction between the two sections of the two-stage approaches is avoided. In this part, the best single-stage high-frequency circuits will be reviewed and evaluated, including circuits where the energy storage is at the output side and others where the energy storage is at the input side. Several new circuits will be introduced. S13 Integrated Magnetics - Advanced Design Topics Gordon (Ed) Bloom, e/j Bloom Associates Inc., San Rafael, California South Ballroom A One of the most interesting power magnetics design techniques now being pursued by power electronics engineers today is the art of blending both transformer and energy storage inductances of switchmode converters together on single magnetic core structures. These unique magnetic systems are called integrated-magnetic (IM) components. This seminar has been structured to provide information on the more detailed design aspects of IM devices, as well as IM applications not previously discussed in past APEC seminars. Included are structure suggestions for combining EMI filter magnetics with power factor stage inductances, new converter topologies wherein both input and output noise reduction filter inductances are combined with the power filter network, and detailed design examples of coupled-inductor magnetic structures of the planar varieties. New multi-chambered IM core arrangements are also presented, along with a detailed design example of their use in a forward converter arrangement preceded by an input filter network. The use of magnetic shunts, or reluctance disks, to enhance leakage inductances in coupled inductor IM devices is also a topic of this seminar. S14 Hybrid Packaging of Power Electronics Al Krum, Hughes Communication Products South Ballroom B A power hybrid is a hybrid microcircuit that dissipates more than 5 watts per square inch and requires special design and fabrication techniques to control device temperatures, to improve reliability, and to meet circuit performance requirements. Power hybrids are used today in a variety of applications including automotive electronics, consumer equipment, power converters, commercial and military avionics, and space power control modules. The trend in packaging power electronics has historically been one of shrinking size and reduced weight with ever-improving performance and reliability. To meet these design objectives the packaging engineer can choose either custom ASICs or hybrids. While ASICs offer the lowest production cost, they have not fully penetrated the power electronics market due to cost and performance issues. The power hybrid offers significant performance improvements over power ASICs with development costs being only a fraction of ASICs. Over the years the power hybrid has evolved from a simple component, such as a linear regulator with one high dissipating linear device to a complete subsystem such as a DC/DC converter that includes a pulse width modulator, high current switches, rectifiers, transformers, and EMI filters. The hybrid engineer, when packaging power electronics, is faced with several challenges, including thermal management, maintaining high efficiencies through low voltage drops, increasing circuit complexities, reducing EMI, and keeping cost in line. This course provides a survey tutorial into the design of power hybrids for use in commercial, industrial, military and space applications. Topics include substrate and package material selection, thermal modeling, and high current design. S15 Guidelines for Selection of On-Board Power Modules David Cooper, Nortel Technology, Ottawa, Ontario, Canada Embassy West This seminar will examine in depth the process of choosing a suitable power module for distributed power systems, with emphasis on Telecommunications applications. Some typical pitfalls will be examined in detail and a checklist will be presented, capturing issues which should be addressed during the selection process. Topics will be covered under these major headings: The proper definition of performance requirements (more than "Watts per Cubic Inch"), covering all the features that might be needed in the power module to ensure the system meets all its requirements, including thermal/mechanical and regulatory as well as electrical aspects. Discussions of system level issues ("Distributed Power = distributed failures") including overall power system stability. Verification of potential suppliers for use in the application, addressing the issues involved in direct and indirect cost (more than "Dollars per Watt") and quality. Top | APEC'98 Home | APEC Home | Site Map What's New | Registration | Accommodations | Exposition Conference Highlights | More Information | Seminars | Rap Sessions Conference at a Glance | Technical Sessions | Conference Committee | Program Committee Conference History | Call for Papers ------------------------------------------------------------------------ Site Designed and Maintained by: j.foutz@ieee.org URL: http://www.apec-conf.org/98/seminar.htm Original: 18 November 1997, Modified: 04 December 1997