3Yao Zhilei,Xiao Lan,Yan Yangguang. Seamless transfer of single-phase grid-interactive inverters between grid- connected and stand-alone modes [J]. IEEE Trans on Power Electronics, 2010,25 (6) : 1597-1603.
4Chang Chewei, Chang Yungruei. Energy storage systems for seamless mode transfer in microgrid [C]//IEEE Ninth International Conference on Power Electronics and Drive Systems. Singapore, Singapore : 2011.