1	HYBRID DC POWER SYSTEM
	2.1	Introduction and Hybrid Power System Operation
The Chapter 2 introduces and analyzes the hybrid wind-solar-storage DC power system from perspective of system configurations and descriptions.Figure 2.1 indicates that two DC/DC converters and one AC/DC converter are used to connect to DC bus from solar panel, wind turbine and battery, and then the common DC bus integrates to the grid with an individual DC/AC inverter,Many researchers have shown numerous configurations and proposed various possible control and optimization methods on both stand-alone and grid-connected systems 
 


	Fig.2.1.