TITLE:
Performance Analysis of Grid Connected and Islanded Modes of AC/DC Microgrid for Residential Home Cluster
AUTHORS:
Ahmed M. Othman, Hossam A. Gabbar, Negar Honarmand
KEYWORDS:
Microgrid, Photovoltaic Systems, Wind Power Generation, Hybrid AC/DC Networks
JOURNAL NAME:
Intelligent Control and Automation,
Vol.6 No.4,
November
13,
2015
ABSTRACT: This paper presents
performance analysis on hybrid AC/DC microgrid networks for residential home
cluster. The design of the proposed microgrid includes comprehensive types of
Distributed Generators (DGs) as hybrid power sources (wind, Photovoltaic (PV)
solar cell, battery, fuel cell). Details about each DG dynamic modeling are
presented and discussed. The customers in home cluster can be connected in both
of the operating modes: islanded to the microgrid or connected to utility grid.
Each DG has appended control system with its modeling that will be discussed to
control DG performance. The wind turbine will be controlled by AC control
system within three sub-control systems: 1) speed regulator and pitch control, 2)
rotor side converter control, and 3) grid side converter control. The AC
control structure is based on PLL, current regulator and voltage booster
converter with using of photovoltaic Voltage Source Converter (VSC) and
inverters to connect to the grid. The DC control system is mainly based on
Maximum Power Point Tracking (MPPT) controller and boost converter connected to
the PV array block and in order to control the system. The case study is used
to analyze the performance of the proposed microgrid. The buses voltages,
active power and reactive power responses are presented in both of grid-connected
and islanded modes. In addition, the power factor, Total Harmonic Distortion
(THD) and modulation index are calculated.