TY - JOUR
T1 - A novel improved variable step-size incremental-resistance MPPT method for PV systems
AU - Mei, Qiang
AU - Shan, Mingwei
AU - Liu, Liying
AU - Guerrero, Josep M.
PY - 2011/6/1
Y1 - 2011/6/1
N2 - Maximum power point (MPP) tracking (MPPT) techniques are widely applied in photovoltaic (PV) systems to make PV array generate peak power which depends on solar irradiation. Among all the MPPT strategies, the incremental-conductance (INC) algorithm is widely employed due to easy implementation and high tracking accuracy. In this paper, a novel variable step-size incremental-resistance MPPT algorithm is introduced, which not only has the merits of INC but also automatically adjusts the step size to track the PV array MPP. Compared with the variable step-size INC method, the proposed scheme can greatly improve the MPPT response speed and accuracy at steady state simultaneously. Moreover, it is more suitable for practical operating conditions due to a wider operating range. This paper provides the theoretical analysis and the design principle of the proposed MPPT strategy. Simulation and experimental results verify its feasibility.
AB - Maximum power point (MPP) tracking (MPPT) techniques are widely applied in photovoltaic (PV) systems to make PV array generate peak power which depends on solar irradiation. Among all the MPPT strategies, the incremental-conductance (INC) algorithm is widely employed due to easy implementation and high tracking accuracy. In this paper, a novel variable step-size incremental-resistance MPPT algorithm is introduced, which not only has the merits of INC but also automatically adjusts the step size to track the PV array MPP. Compared with the variable step-size INC method, the proposed scheme can greatly improve the MPPT response speed and accuracy at steady state simultaneously. Moreover, it is more suitable for practical operating conditions due to a wider operating range. This paper provides the theoretical analysis and the design principle of the proposed MPPT strategy. Simulation and experimental results verify its feasibility.
KW - Incremental resistance (INR)
KW - maximum power point (MPP) tracking (MPPT)
KW - photovoltaic (PV) power systems
KW - variable step size
UR - http://www.scopus.com/inward/record.url?scp=79956283822&partnerID=8YFLogxK
U2 - 10.1109/TIE.2010.2064275
DO - 10.1109/TIE.2010.2064275
M3 - Journal article
AN - SCOPUS:79956283822
SN - 0278-0046
VL - 58
SP - 2427
EP - 2434
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 6
M1 - 5559432
ER -