A Different Three-Port DC/DC Converter for Standalone PV System

Table 2

Equilibrium point of the operation mode.

Operation mode	Equilibrium point	Functions
Mode 1	𝑉𝑜=11−𝑑𝑆2𝑉rs	Feeding the load with 𝑉rs
	𝑉bat=𝑑𝑆1𝑉rs	Charging battery if required
Mode 2	𝑉𝑜=11−𝑑𝑆2−𝑑𝑆3𝑉rs	Feeding the load from 𝑉rs and 𝑉bat
	𝑉bat=𝑉rs−(1−𝑑𝑆3)𝑉𝑜
	𝑉𝑜=11−𝑑𝑆2𝑉bat	Feeding the load only with 𝑉bat
Mode 3	𝑉bat=𝑑𝑆1𝑉rs	Charging battery