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
英文摘要
Abstract
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.