Title :
Implementation of high step-up solar power optimizer for DC micro grid application
Author :
Chen, Shih-Ming ; Hu, Ke-Ren ; Liang, Tsorng-Juu ; Hsieh, Yi-Hsun ; Yang, Lung-Sheng
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
This paper proposed a novel high step-up solar power optimizer (SPO), which efficiently harvests maximum energy from photovoltaic (PV) panel then output to DC micro-grid. It combines coupled inductor and switched-capacitor technologies to achieve high step-up voltage gain. The leakage inductance energy of the coupled inductor can be recycled to reduce the voltage stress and power losses. Therefore, low voltage rating and low conduction resistance switch can be selected to improve system efficiency. Laboratory prototypes of the proposed SPO with an input voltage arrange of 20~40V and the maximum output 400 V/ 300 W is implemented to verify the performance and MPPT accuracy when connected to DC micro-grid simulator.
Keywords :
distributed power generation; energy harvesting; inductors; photovoltaic power systems; solar power stations; switched capacitor networks; DC microgrid application; MPPT; PV; SPO; coupled inductor; energy harvesting; high step-up solar power optimizer; high step-up voltage gain; leakage inductance energy; low conduction resistance; low voltage rating; photovoltaic panel; power losses; switched-capacitor technologies; voltage 20 V to 40 V; voltage 300 V; voltage 400 V; voltage stress; Accuracy; Capacitors; Inductance; Inductors; Switches; Voltage measurement; Windings;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1215-9
Electronic_ISBN :
978-1-4577-1214-2
DOI :
10.1109/APEC.2012.6165794
