Title :
Comparison of P&O and hill climbing MPPT methods for grid-connected PV converter
Author :
Liu, Fangrui ; Kang, Yong ; Zhang, Yu ; Duan, Shanxu
Author_Institution :
Coll. of Electr. & Electron. Eng., Huazhong Univ. of Sci. & Technol., Wuhan
Abstract :
Maximum power point tracking (MPPT) techniques are employed in photovoltaic (PV) systems to make full utilization of the PV array output power which depends on solar irradiation and ambient temperature. Among all the MPPT strategies, perturbation and observation (P&O) and hill climbing methods are widely applied in the MPPT controllers due to their simplicity and easy implementation. In this paper, both P&O and hill climbing methods are adopted to implement a grid-connected PV system. Their performance is evaluated and compared through theoretical analysis and digital simulation. P&O MPPT method exhibits fast dynamic performance and well regulated PV output voltage, which is more suitable than hill climbing method for grid-connected PV system.
Keywords :
photovoltaic power systems; power convertors; power grids; PV array output power; ambient temperature; digital simulation; grid-connected PV converter system; hill climbing methods; maximum power point tracking techniques; perturbation and observation method; photovoltaic systems; solar irradiation; theoretical analysis; Control systems; Digital simulation; Educational institutions; Performance analysis; Photovoltaic systems; Power engineering and energy; Power generation; Solar power generation; Temperature dependence; Voltage control;
Conference_Titel :
Industrial Electronics and Applications, 2008. ICIEA 2008. 3rd IEEE Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-1717-9
Electronic_ISBN :
978-1-4244-1718-6
DOI :
10.1109/ICIEA.2008.4582626
