《《Small-Signal Model of a Voltage Source Inverter 》.pdf

Small-Signal Model of a Voltage Source Inverter (VSI) Considering the Dead-Time Effect and Space Vector Modulation Types 1 1 1 1 1 2 2 S. Ahmed , Z. Shen , P. Mattavelli , D. Boroyevich , M. Jaksic , K. Karimi and J. Fu 1Center for Power Electronic Systems 2The Boeing Company (CPES) Seattle ,WA The Bradley Department of Electrical kamiar.j.karimi@ and Computer Engineering Virginia Polytechnic Institute and State University Blacksburg, VA sahassan@ Abstract— This paper presents a modified small-signal model of for control and stability studies. a voltage source inverter (VSI) that captures model Stability analysis is important because most power nonlinearities such as dead time and modulation effects that electronics converters behave as constant power loads that were not presented in the literature. Previous research has have negative impedance characteristics and can cause concentrated on developing compensation methods for these instabilities [4]-[6]. For ac converters, a key breakthrough was types of phenomena in a switching model, but none actually accomplished by Belkhayat who employed the generalized derived an analytical model that can predict them. In this paper, Nyquist stability criteri