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Design Constraints and Optimization of Series-Stacked Energy Decoupling Buffers in Single-Phase Converters

Event Type
Seminar/Symposium
Sponsor
Grainger CEME
Location
3017 ECEB
Date
Nov 6, 2017   4:00 - 5:00 pm  
Speaker
Zitao Liao
Views
71

Abstract

Slides

Video

 

For single-phase dc-ac and ac-dc conversion, energy decoupling is needed to compensate for the instantaneous power mismatch between the ac and the dc sides. The series-stack buffer (SSB) is an active energy-decoupling buffer that allows a large voltage ripple on the energy storage capacitor to improve the energy utilization ratio, with the actively regulation of the dc-bus voltage to ensure minimal ripple. The SSB architecture has been demonstrated to attain high efficiency, high power density and excellent ripple control on the dc-bus. This talk presents a set of design constraints for the SSB that specify the relation among the passive components and the load power level. We propose a non-linear-programming-based scheme is also proposed to solve the resulting constrained optimization problem. The optimization results promise a smaller and lower-cost solution than those of earlier efforts on SSB.

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