Keynote

Understanding the Current Loop Gain

Schedule:

Tuesday, June 24. 8:15-9:00
Assembly Hall

Speaker Detail:

Don Tan is fellow / APOL program manager with NGAS. He earned his Ph.D. from Caltech and is an IEEE fellow.

He is an authority in power management technology within NGC, NASA, Air Force, government communities and space power industry. He is President of IEEEPELS and the Founding Editor-in-Chief, IEEE Journal of Emerging and Selected Topics in Power Electronics (JESTPE).

His recent recognitions include NGAS Distinguished Engineer in 2011, CIE USA Asian American Engineer of the Year Award in 2010, AIAA Space System Award in 2008, JANNAF Outstanding Achievement Award in Spacecraft Propulsion in 2007, and NGST Distinguished Patent Award in 2002. His technology was licensed to a major telecom company.

Description:

Abstract: Current programming techniques are continuing their popularity among practitioners as well as researchers in various applications including sustainable energy system. The popularity stems from its simple capability to provide lossless damping and hence its ability to extend bandwidth and simplify the task of loop shaping while maximizes performance. However, there have been consistent and persistent confusions on what is the simple and logical way of modeling the current loop gain, especially when it comes to improve model prediction to close to a half of the switching frequency. This keynote will try to discuss the basic features for a current loop: DC gain, corner frequencies, cross-over frequencies and a simple extension to include the sampling effect in the model, accurate up to a half of the switching frequency. Comparison to other models will also be presented to provide further insight into practical applications.

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