Title :
Multiple modes control of household DC microgrid with integration of various renewable energy sources
Author :
Xiao Jianfang ; Wang Peng
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
Increase of DC-compatible loads, popularization of renewable distributed generations (DGs) and development of power electronic converters have boosted the applications of DC microgrid in household level. Proper control algorithms for autonomous operation of DC microgrid which coordinates the operation of energy storages, sources and loads become the key challenge. Comparing with centralized energy management system, distributed control eliminates communication link, thus system response speed and reliability could be enhanced. DC-bus signaling (DBS) in which the bus voltage is regarded as global indicator for system power balance is an effective solution for power sharing. Bus voltage band is divided into few sub-regions around the nominal value. Various elements are prioritized based on system control objectives and scheduled to operate with different mode in respective sub-region. Bus voltage variation induced by power supply/demand difference activates operation mode change of system elements autonomously. A lab-scale DC microgrid with integration of modular solar Photovoltaic (PV) system, battery energy storage (BES) and DC loads was developed to verify the feasibility and effectiveness of proposed control algorithm.
Keywords :
battery storage plants; demand side management; distributed power generation; energy management systems; energy storage; photovoltaic power systems; power convertors; BES; Bus voltage variation; DBS; DC load; DC-bus signaling; DC-compatible load; PV system; battery energy storage; bus voltage; distributed control; energy management system; energy storage; household DC microgrid; lab-scale DC microgrid; modular solar Photovoltaic system; multiple mode control; power electronic converter; power sharing; power supply-demand difference; renewable distributed generation; renewable energy source; voltage band; Batteries; Discharges (electric); Microgrids; Power generation; Switches; Voltage control; DC microgrid; DC-Bus signaling; battery energy storage system; multiple modes operation; solar PV;
Conference_Titel :
Industrial Electronics Society, IECON 2013 - 39th Annual Conference of the IEEE
Conference_Location :
Vienna
DOI :
10.1109/IECON.2013.6699400