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http://dx.doi.org/10.6113/TKPE.2020.25.1.29

A Novel Voltage Control MPPT Algorithm using Variable Step Size based on P&O Method  

Kim, Jichan (Daejeon Metropolitan Rapid Transit Corporation)
Cha, Hanju (Dept. of Electrical Engineering, Chungnam National University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.25, no.1, 2020 , pp. 29-36 More about this Journal
Abstract
In this study, a variable step algorithm is proposed on the basis of the perturb and observe method. The proposed algorithm can follow the maximum power point (MPP) quickly when solar irradiance changes rapidly. The proposed technique uses the voltage change characteristic at the MPP when the environment changes because of insolation or temperature. The MPP is tracked through the voltage control using a variable step method. This method determines the sudden change of solar irradiance by setting the threshold value and operates in fast tracking mode to track the MPP rapidly. When the operation point reaches the MPP, the mode switches to the variable step mode to minimize the steady state error. In addition, the output disturbance is decreased through the optimization of the control method design. The performance of the proposed MPPT algorithm is verified through simulation and experiment.
Keywords
MPPT(Maximum Power Point Tracking); P&O(Perturb and Observe); PV system; Voltage control;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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