The Design of IPM and Other "Hybrid" Motors & Drives
PART I - "Hybrid" Motor & Drives: Overview, Performance & Analysis
Presented by Dr. George Holling, Technical Director, Rocky Mountain Technologies
February 13, 2008 • 8 a.m. - 12 p.m. •
Internal permanent magnet motors (IPM) utilize both reluctance torque and magnetic torque to achieve their
superior performance. Other “hybrid” PM motors have been introduced, i.e. linear and transverse flux
machines. “Hybrid” motors can even be built without permanent magnets.
These new technologies promise great cost and performance advantages but conventional methods of design
may fail to achieve the full theoretical performance. The workshop will give an overview of the challenges and
the tools that are available to solve these challenges effectively with specific examples.
The participant in this session will be introduced to “hybrid” motor technologies: their specific and unique
performance characteristics, the mechanical design of the motor, the function and design of the controller and
the difficulties in accurately designing these systems.
The session will give an overview how modern design tools, such as FEA, MATLAB, SPICE and other CAD
tools can be utilized to allow for the effective design and analysis of “hybrid” motor drive systems and how
these tools, if used properly in conjunction with each other, allow for the effective design and “virtual”
prototyping of “hybrid” motor and drive systems and to avoid costly and time consuming mistakes to quickly
bring cost effective, reliable and well performing motor solutions to the marketplace.
Who Should Attend:
Technical managers involved in motor and drive design and motor/drive designers that are looking to
become familiar with the challenges that “hybrid” motor technologies present.
---------------------------------------------------------------------------------------------------------------------------------
The Design of IPM and Other "Hybrid" Motors & Drives
PART II - "Hybrid" Motor & Drives: Tools for Design & Analysis
February 13, 2008 • 1 p.m. - 5 p.m. •
Internal permanent magnet motors (IPM) utilize both reluctance torque and magnetic torque to achieve their
superior performance. Other “hybrid” PM motors have been introduced, i.e. linear and transverse flux
machines. “Hybrid” motors can even be built without permanent magnets.
These new technologies promise great cost and performance advantages but conventional methods of design
may fail to achieve the full theoretical performance. The workshop will give an overview of the challenges and
the tools that are available to solve these challenges effectively with specific examples.
The participant in this session will be introduced to the design tools and methods that are available for the
design of “hybrid” motors. The session will give an overview how modern design tools, such as FEA,
MATLAB, SPICE and other CAD tools can be utilized to allow for the effective design and analysis of
“hybrid” motor drive systems and how these tools, if used properly in conjunction with each other, allow for the
effective design and “virtual” prototyping of “hybrid” motor and drive systems and to avoid costly and time
consuming mistakes to quickly bring cost effective, reliable and well performing motor solutions to the
marketplace.
The session will show a detailed example of a full design cycle for a 10 kW IPM motor using some of the above
mentioned tools. The attendees are encouraged to participate with questions and hands-on demonstrations
during this workshop. Attendees are encouraged but not required to bring a laptop with wireless networking
ability for some hands-on work.
Who Should Attend:
Technical managers involved in motor and drive design and motor/drive designers that are looking to
become familiar with the challenges that “hybrid” motor technologies present.
About the Instructor:
Dr. George Holling has been a design engineer and technical manager for companies such as General Electric,
Honeywell, Pacific Scientific, Advanced Motion Control and Rocky Mountain Technologies.
He has been a consultant for major US and international corporations for motor and drive design and the
development of new motor and control technology. Dr. Holling has a diverse background with 30 years of experience in industrial, appliance, automotive and aerospace motor and drive systems. He is currently the Technical Director of Rocky Mountain Technologies and manufacturing and consulting firm for switched reluctance and custom motors and drives.
Half-Day (Part I or Part II) - Early Bird Registration before January 18th - $295
After January 18th - $495
Half-Day ( Additional $50 off for team registrations (2 or more)
•
Full-Day (Part I & Part II) - Early Bird Registration before January 18th - $495
After January 18th - $695
Full-Day ( Additional $100 off for team registrations (2 or more)
(Lunch Included for full-day participants)
REGISTER
---------------------------------------------------------------------------------------------------------------------------------
Optimization of Servo Control Systems using Frequency Domain Analysis: A Mechatronic Approach
Presented by Dr. Razvan Panaitescu, R&D Consulting Systems Engineer, Siemens E&A
February 13, 2008 • 10 a.m. - 5 p.m. (Lunch Included)
Part I - Introduction to Mechatronic System Analysis
- Simple Models of Mechanical Systems
- Frequency Domain Analysis of Mechanical Dynamics
- Frequency Response of One-Mass Dynamics
- Frequency Response of Two-Mass Dynamics
• Part II - Optimization of Drive-Control Parameters
- Block Diagram of Simotion /Sinamics Servo-Control
- Control Optimization Procedure
* STEP 1 - Current Controller
* STEP 2 - Measure the System Characteristics
* STEP 3 - Measure the Mechanical Transfer Function
* STEP 4 - Optimize the PI Controller of the Speed Loop
* STEP 5 - Optimize the Reference Model of the Speed Loop
• Part III - Optimization of Servo-Control Parameters
- Control Optimization Procedure
* STEP 6 - Position Control Optimization
- Motion Profile Analysis and Limitations
Requirements:
Practical experience and understanding of control theory and principles of control tuning
About the Instructor:
Dr. Razvan Panaitescu is responsible for the Mechatronic Support Business within the Automation and Motion Division of Siemens Energy & Automation Inc. He is acting as an R&D Consulting System Engineer for customers that are integrating Siemens Motion Controllers and Drives into their mechanical designs. He has a PhD degree in Electrical Engineering and a Bachelor degree in International Business from Transylvania University in Romania.
Early Bird Registration before January 18th - $495
After January 18th - $695
Additional $100 off for team registrations (2 or more)
REGISTER
---------------------------------------------------------------------------------------------------------------------------------
Motor Control: From Basic to Advance Techniques
Presented by the Motor Control Group, Renesas Technology America, Inc.
February 13, 2008 • 8 a.m - 12 p.m.
This half day seminar is designed to teach motor control techniques for Brushless DC Motors, starting from basic 6-step trapezoidal method to advance vector control method. It is divided in two parts – first part covers the basic 6-step trapezoidal control, and second part covers the advance vector control.
1. 6-step Trapezoidal Control for BLDC motors
This part of the seminar will cover two control methods – Hall sensor-based control and Back EMF based control. Fundamentals such as commutation states, state machine, Hall sensor pattern and speed measurements will be discussed. Special emphasis is on the subject of how to implement, debug and tune the closed loop control. We plan to show an exact sequence of commutation, measurements of speeds and currents, and a closed loop implementation for speeds as well as currents (torque). We will provide hands-on experience on these techniques with our motor control hardware and BLDC motor. Each attendee will be able to work with the software (compile, link, and download the code on the board) and run BLDC motor at various speeds (start, change speed and stop).
About the Instructors:
Kevin P. King, Senior Staff Applications Engineer, Renesas Technology America, has over 30 years experience in embedded applications development, particularly in hardware and software design, system integration and performance testing. He received his B.S. degree in electrical engineering from the University of Lowell, Massachusetts, in 1987. In the past few years, he has been working in the field of motor drives, power electronics, and control applications.
Robert Proctor, with more than 15 years of experience in motor control and nearly ten years of experience in embedded systems, is involved in developing applications of BLDC motors, particularly sensorless back EMF based control. He brings wealth of knowledge about hardware design, software integration, and testing and analysis.
Audience level: This seminar is for control engineers who are beginning to experiment with BLDC motors and want to implement basic methods. They will have a clear understanding of how to work with MCU to develop basic control.
2. Implementing and debugging vector speed control for BLDC motors
This part of the seminar will start with basic techniques and show why sinusoidal and vector control is needed. Basic mathematics will be described first with an explanation of all parameters. A computational flow implemented for the speed and two current loops will be discussed next. We will explain how the angle and speed measurements are performed using a digital encoder and how the phase currents are measured and used in the current loops. Final step of converting the commanded voltages from dq-frame (rotor) to ab-frame to UVW-frame (stator) and into pwm counts for the 3-phase timer will be explained. Performance criteria and methods to observe various parameters will be discussed. Results of the testing with and without load will be discussed.
About the Instructors:
Huangsheng Xu received the Ph.D. degree in electrical engineering from Texas A&M University, College Station, Texas, in 2001. In the past ten years, he has been working in the field of motor drives and power electronics. He holds three U.S. patents and has published over ten papers in the IEEE journals and conference proceedings. Currently he is working at Renesas Technology America for motor control applications.
Yashvant Jani, director of applications engineering, is currently involved in developing advance motor control applications. He has more than 15 years experience in embedded systems and spent last four plus years in studying motors, particularly to develop and test vector control motor speeds. He received his Ph.D. in physics from the University of Texas at Dallas (UT-D) in 1975 and has worked for the space shuttle program for fifteen years in integrated guidance, navigation and control areas.
Audience level: This seminar is for control engineers with basic understanding and some experience and who want to implement high performance control systems. They will have a clear understanding of what vector control can do and can not do for the speed control.
Early Bird Registration before January 18th - $295
After January 18th - $495
Additional $50 off for team registrations (2 or more)
REGISTER
---------------------------------------------------------------------------------------------------------------------------------
Sensorless Field-Oriented Control (FOC) for Brushless DC (BLDC) Motors and
Permanent Magnet Synchronous Motors (PMSMs)
Presented by Mark Reynolds, Field Applications Engineer, Microchip Technology Inc.
February 13, 2008 • 1 p.m. - 5 p.m.
Engineers interested in advanced motor-control techniques for present or future designs are invited to attend Microchip Technology’s Motor, Drive & Automation Systems pre-conference workshop. This workshop will present example motor-control applications for high-performance systems, using sensorless Brushless DC (BLDC) motors or Permanent Magnet Synchronous Motors (PMSMs), and Microchip’s dsPIC® Digital Signal Controller (DSC) and analog products. The workshop will provide a review of the dsPIC DSC architecture, with an emphasis on peripherals that are integrated specifically for motor control. Attendees will learn techniques and algorithms for Field-Oriented Control (FOC) and sensorless control with back-EMF filtering.
Each attendee will leave the workshop with many Microchip motor-control development tools. These include a demonstration board, a copy of the MPLAB® Integrated Development Environment, Microchip’s Motor Control Graphical User Interface (GUI), Its FOC algorithm and application note, a demonstration version of the MPLAB C30 C compiler, dsPIC DSC samples and additional firmware.
Early Bird Registration before January 18th - $395
After January 18th - $495
Additional $50 off for team registrations (2 or more)
REGISTER
---------------------------------------------------------------------------------------------------------------------------------
A Comprehensive Review of the Basic Design Elements of the Brushless PM Motor and Drive and Its Use in World Markets (An SMMA Motor & Motion College Course)
Presented by Dan Jones, President, Incremotion Associates, USA
February 13, 2008 • 8 a.m. to 12 p.m. -
This seminar combines the design tradeoffs and technical performance of 9 specific types of brushless PM motors and their associated drives along with market successes and failures. The brushless PM motor and drive history is chronicled from the 1960’s to today. Today’s application success stories are discussed along with projections about future brushless PM applications.
Early Bird Registration before January 18th - $295
After January 18th - $495
Additional $50 off for team registrations (2 or more)
REGISTER
---------------------------------------------------------------------------------------------------------------------------------
Motor Control, AC Drives and Servo Systems
An SMMA Motor & Motion College Course
Presented by Dr. Dal Ohm, President, Drivetech, Inc.
February 13, 2008 • 1 p.m. - 5 p.m. -
The purpose of this course is to provide fundamental concepts on motor control theory and in-depth knowledge and skills in designing high performance motor drives. The course starts with the magnetic and mechanical structure of the various motor types to understand torque production mechanism and to derive a machine model for various control techniques. Discussion is followed by various implementation tools such as power electronics switches, motor drive topologies, drive hardware, commutation algorithm and software as well as servo systems.. The content will cover most of the basic skills in designing brushless, reluctance and induction motor drives with a variety of feedback sensors. From the author’s long experience in research and development of many different types of drives, practical and useful procedures in selecting components and methods, rule-of-thumb design rules, performance vs cost tradeoff, etc will be discussed. Course contents include:
1. Power Electronics for Motor Drives
Power Electronics Devices
Rectifiers and DC motor control
Brushless motors and Electronic Commutation
Drive Configuration and PWM
Gate Drive Design
2. DC motors and Servo Systems
Torque production in DC motors
Servo System Fundamentals
Current Control of DC Drives
PID and other Velocity and Position Control Algorithms
Mechanical Resonance Modeling and Digital Filtering Technique
3. Control of Brushless and Induction Motors
Basic Principles of Torque production in DC and AC Electric Motors
Dynamic Model of Brushless Motors
Frame Transformation and Synchronous d-q frame Model of Motors
Angle Advance Control of Brushless Motors
Control of Induction Motors and Field-Weakening Operation
4. New Technologies in AC Motor Control’
Space Vector Modulation
Advanced Digital Current Control
Modeling and Simulation
About the Instructor:
Dr. Ohm is the president of Drivetech, Inc., a technical consulting firm specializing in motor control, drives and servo systems. He has more than 20 years of industrial and academic experience in research and product development in the fields of motor drives and servo systems. His major area of interest includes motion control, digital control and robotics, vector control, AC and DC motor drives and power electronics. He has more than 50 published articles and conference presentations in the above area. Prior to consulting, he was Technical Director at Kollmorgen Motion Technologies Group. He was also with Baldor Electric Company and Electrocraft, Inc. He taught engineering courses (Electric Machines, Robotics, Digital Control) at San Jose State University, and Cogswell Polytechnical College as Adjunct Professor for many years. He received Ph.D. and M.S. degrees in Electrical Engineering from Texas A&M University. He is a member of IEEE, SAE and SMMA.
Early Bird Registration before January 18th - $295
After January 18th - $495
Additional $50 off for team registrations (2 or more)
REGISTER
---------------------------------------------------------------------------------------------------------------------------------
Design & Control Techniques for the Mitigation of Torque Ripple (And Cogging) Produced By PM Synchronous Machines
An SMMA Motor & Motion College Course
Presented by Dr. Steven D. Pekarek, Associate Professor, Purdue University,
Dept. of Electrical & Computer Engineering
February 13, 2008 •8 am to 12 pm
Traditionally, in permanent magnet synchronous machine (PMSM) drives where torque ripple (including cogging torque) is an issue, mitigation is achieved by modifying the machine design (i.e. magnet/tooth/slot geometry). Such modifications are useful; however, their effectiveness can be limited in that ripple reduction comes at a price of reduced torque density and often requires additional design effort and manufacturing steps. As an alternative to machine design, inverter-based strategies have been proposed in which stator excitation is manipulated to control torque harmonics. The advantages of the inverter-based mitigation methods are that they reduce manufacturing effort and they provide a means for a manufacturer to market a low-torque-ripple drive system as a user-selected option. However, a potential disadvantage is that current harmonics used to control torque ripple lead to additional harmonics in the dc bus that can reduce source lifetime. In addition, the dc-link voltage required to achieve current tracking, conduction loss, and potentially magnetic (core) loss are all increased. In this workshop, both machine design- and inverter-based techniques will be reviewed in detail. Upon completion, a designer will have knowledge of design and inverter-based mitigation techniques, a qualitative measure of their tradeoffs, and a set of analytical and numerical tools that are useful in exploring options for their respective applications.
Early Bird Registration before January 18th - $295
After January 18th - $495
Additional $50 off for team registrations (2 or more)
REGISTER
---------------------------------------------------------------------------------------------------------------------------------
How to Improve Electric Motor Power Efficiency
An SMMA Motor & Motion College Course
Presented by Richard Welch Jr., Sr. IEEE Member
February 13, 2008 •1 pm to 5 pm
The general power efficiency equation for all electric motors will be derived, followed by a description/discussion of the actual physical mechanisms that create power loss inside the motor. Finally, practical ways that can be used by both motor manufacturers and users to improve power efficiency in both existing and new motor designs will be described.
Early Bird Registration before January 18th - $295
After January 18th - $495
Additional $50 off for team registrations (2 or more)
REGISTER
---------------------------------------------------------------------------------------------------
