Power Converter Design Using Modern Control Methods for Digital or Analog Implementation
Presented by: Louis R. Hunt, Ph.D., Chief Scientist and Co-founder of Cirasys, Inc.
Date: Monday, September 9, 2013
Time: 2:00 - 4:00 p.m.
Location: Renaissance Dallas Richardson Hotel, Richardson, TX
Fee: $50 with DES registration; $395 for seminars only (good for both Monday seminars)
Attendees will be taken through the process of designing a power converter with modern control methods that allow for much faster and simpler design while providing greater capabilities and flexibility. Comparisons and contrasts with existing methods will be shown.
Intended for design and application engineers and technical management and marketing personnel, this seminar will provide background knowledge, analytical tools, and procedures for implementing control methods for power converters. We discuss nonlinear control techniques as well as nonlinear stability methods applied to state space models.
Most design for buck, boost, and buck-boost DC-DC converters is accomplished through linear methods using transfer functions. Most stability analysis is based on phase margins and gain margins for Bode plots, again a linear technique. The buck converter is linear, but the boost and buck-boost are nonlinear. Hence the transfer functions and Bode plots for these are generated using small signal linear approximations near an operating (or equilibrium) point. As the desired output voltage changes, the operating point changes which induces a corresponding change in the transfer function as well as the compensator being designed. Using state space averaging, Cuk and Middlebrook provide nonlinear state space models for boost converters and for buck-boost converters. We discuss nonlinear control techniques as well as nonlinear stability methods applied to state space models. Enhanced performance and stability, as well as ease of implementation using controls based on these techniques will be described.
The attendee will leave this seminar with knowledge of:
- Representations of systems, with an emphasis on state space.
- Stability techniques and analysis.
- Control methods, in particular for nonlinear state space systems.
- Performance results for DC-DC converters with state space-based nonlinear controls.
Louis R. Hunt, Ph.D., Chief Scientist and Co-founder of Cirasys, Inc.
Dr. Hunt is Professor Emeritus of Electrical Engineering at the University of Texas at Dallas and an IEEE Fellow. He has published extensively during his academic career and taught at Texas Tech University before joining UT-Dallas. He is the co-inventor of feedback linearization through his research at the NASA AMES Research Center, as well as co-inventor of several modern control methods specifically designed for power electronics. He is a recipient of the University of Texas Chancellor’s Award for excellence in teaching. Dr. Hunt received his Ph.D. from Rice University and is a licensed professional engineer in the state of Texas.
Register for both DES and this seminar (please click the check-box listed under "Available Options" before clicking the "Add to Cart" button).
Register for the seminar only. For questions or more information please contact Traci Shepard.