Fast-Converging Speed and Zero Oscillation MPPT Method for PV system

Abstract

Abstract:This paper proposes Photovoltaic (PV) system with
Maximum Power Point Tracking (MPPT). The DC-DC boost
converter is used for DC loads.The PV panels are simulated in a
circuit-based model and are proposed to evaluate and analyze the
electrical behavior of a PV panel concerning the change in
environmental conditions like irradiance and temperature.
Different types of algorithms and switches are used in MPPT
techniques depending on the operating conditions of the array.
Perturb and Observe (P&O) is the basic MPPT method,
Incremental Conductance Method is another MPPT method and
Conventional Beta MPPT method is the one used in this paper.
The Conventional Beta Method ensures higher efficiency in terms
of tracking time, power loss, voltage and it can also further
reduce the oscillations around the MPP of a PV panel under
steady-state conditions. The improved Beta MPPT method
achieves all the objectives of MPPT in eliminating the oscillations
around the PV power systems. A DC-DC boost converter is used
to get constant DC voltage output by changing DC panel voltage
and hence duty cycle of the converter is calculated accordingly.
The proposed method is simulated using MATLAB/SIMULINK
and the results are presented.

Index Terms: DC-DC Boost Converter, Perturb and Observe
Algorithm (P&O), Incremental Conductance Algorithm (INC),
Conventional Beta Method, Maximum Power Point Tracking
(MPPT), Photovoltaic (PV) system, Solar PV module, Zero
oscillation, and fast converging speed.