Optimized Maximum Power Point Tracker for Fast-Changing Environmental Conditions

Abstract

Abstract-This paper presents a high-performance maximum power point tracker (MPPT) optimized for fast cloudy conditions, e.g., rapidly changing irradiation on the photovoltaic panels. The rapidly changing conditions are tracked by an optimized hillclimbing MPPT method called dP -P&O. This algorithm separates the effects of the irradiation change from the effect of the tracker's perturbation and uses this information to optimize the tracking according to the irradiation change. The knowledge of the direction of the irradiation change enables the MPPT to use different optimized tracking schemes for the different cases of increasing, decreasing, or steady irradiance. When the irradiance is changing rapidly this strategy leads to faster and better tracking, while in steady-state conditions it leads to lower oscillations around the MPP. The simulations and experimental results show that the proposed dP -P&O MPPT provides a quick and accurate tracking even in very fast changing environmental conditions.

Two-stage PV inverter system emulator in converter based power grid emulation system

“…In the implementation of the current-type INC MPPT methods, two issues should be taken into account. First, INC MPPT methods can fail under rapidly changing irradiance conditions with large ramp rates [15]. Fig.…”

Micro-grid transient dynamic response enhancement during and subsequent to huge and multiple disturbances by connecting it with nearby micro-grids

“…MPPT for photovoltaic is discussed in many studies (Fangrui Liu et al 2008, Femia et al 2008, Fortunato et al 2008, Kim and Kim 2006, Gules et al 2008, Mutoh and Ohno 2006, Park et al 2006, Patel and Agarwal 2008, Scarpa et al 2009, Sera et al 2008, Xiao et al 2006). We proposed a novel method for photovoltaic MPPT based on a neuro-fuzzy algorithm and this algorithm is introduced in our previous work (Kamel et al 2010).…”

Direct MPPT control of PWM converters for extreme transient PV applications

“…As illustrated in Fig. 2, MPPT algorithms are typically implemented in a stand-alone fashion by setting the reference voltage (or current) to the DC-DC converter [8][9][10][11][12][13]. The MPPT algorithm must wait for the converter to reach the indicated operating point prior taking any other action, which leads to a relatively slow performance even when the algorithm is optimized [14][15][16].…”