CONFERENCE
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Oliver Astley
Technology Leader
GE Global Research
Niskayuna, NYAbstract
Electrification technologies are entering a renaissance - and Power technologies are in the middle of it. With this renaissance also come accelerating demands on the pace of development, value to the user, and a need for multi-disciplinary integration. It is the responsibility of the contemporary engineer to be aware of all these factors. In this talk, Oliver will discuss examples of power technologies driving this renaissance, and how these factors are changing the way we design and develop them.
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Milan Jovanovic
Senior Vice President
Advanced Research & Development
Delta Products CorporationAbstract
A brief historical overview of efficiency and power-density improvements of single-phase ac-dc power supplies for computer and telecom applications in past twenty-five years is presented. Major technology developments, as well as regulatory and market drivers responsible for this performance advancements are identified. The impact of emerging WGB semiconductor devices on performance of the next generation of off-line power supplies is also discussed. Finally, the major challenges of adapting computer-power technology to on-board automotive applications are identified and possible solutions are outlined.
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Vladmir Blasko
Senior Fellow
United Technologies Research CenterAbstract
The presentation will provide historic perspective, evolution and common theoretical framework arriving from three different fields (classical-general-control, electrical motor drives, adaptive noise canceling) for tracking and elimination of harmonics in power electronics applications. After presenting a general theoretical framework for tracking and elimination of arbitrary periodic waveforms, the synchronous reference frame current regulators will be reviewed as broadly used and still dominant for current control in electrical drives. Extended versions of these regulators that are used in grid type applications will be analyzed and compared with Adaptive Noise Canceling techniques used in acoustic noise processing and with Selective Harmonic Elimination for grid-tied converters. High level of similarity between the approaches will be demonstrated and - as any arbitrary repetitive (periodic) waveform can be synthesized from combination of sinusoidal harmonic components - the concept of repetitive regulator will be derived as a combination of harmonic regulators. The derivation and performance of different regulators will be demonstrated through simulations and experimental results from multiple applications.
2015 Invited Plenary Sessions
Session Chair: Fred C. Lee, Virginia Tech
