4Liu X,Wang P,Loh P C. A Hybrid AC/DC Micro- grid and Its Coordination Control[J]. IEEE Trans- actions on Smart Grid,2011,2(2):278 -286.
5Lu D D C, Agelidis V G. Photovoltaic-Battery-Pow ered DC Bus System for Common Portable Elec tronic Devices[J]. IEEE Transactions on Power E lectronics, 2009,24 ( 3 ) : 849-855.
6Hammerstrom D J. AC versus DC distribution sys- tems: Did we get it right[J]. IEEE Power Eng. Soc. Gen. Meet, 2007: 1-5.
7Anand S, Fernandes B G. Steady state performance analysis for load sharing in dc distributed generation system [J]. Proc. 10thInt. Conf. Environ, 2011: 1-4.
8Li Y W, Kao C N. An accurate power control strate gy for power-electronics-inter{aeed distributed genera tion units operation in a low voltage multi-bus micro grid [J]. IEEE Trans. on Power Electron, 2009 2977 - 2988.
9He J, Li Y W. Analysis, design and implementation of virtual impedance for power electronics interfaced distributed generation [J]. IEEE Trans. on Ind. Appl, 2011: 2525- 2538.
10Kakigano H, Nishino A, Miura Y, et al. Distribu-tion voltage control for DC microgrid by converters of energy storages considering the stored energy [C]. IEEE Energy Conversion Congress and Exposition. Atlanta, USA: 2010: 2851-2856.
