domingo, 14 de abril de 2013
Design and Implementation of Paralleled Multi-Inverter Systems with Redundancy and Hot-swap Features
Design and Implementation of Paralleled Multi-Inverter Systems
with Redundancy and Hot-swap Features
Student: Jia-Wei He Advisor: Tsai-Fu Wu, Ph.D.
Yaow-Ming Chen, Ph.D.
Institute of Electrical Engineering
College of Engineering
National Chung Cheng University
This thesis proposes redundancy and hot-swap features for paralleled
multi-inverter systems with voltage control and current weighted distribution
control (CWDC) strategy. With a CWDC strategy, instantaneous current is fed
back and monitored; thus, weighted output current distribution and fast regulation
among the inverters can be achieved for linear and nonlinear loads. Additionally,
the proposed paralleled system is equipped with the features of redundancy and
hot-swap; therefore, system power rating can be expanded readily and it has high
maintainability. Simulation results and hardware measurements from a
two-inverter system with either equal or different power ratings have demonstrated
the feasibility of the proposed control scheme in fast regulation and weighted
current distribution. The proposed redundancy and hot-swap features have
improved reliability and stability of the paralleled multi-inverter system.