Constant Power Generation Method for Grid-Connected Photovoltaic Systems With Fast Response Under Dynamic Irradiance Condition

Yang, Hyoung-Kyu; Aleem, Zeeshan; Lee, Junhyuk; Park, Jung–Wook

doi:10.1109/ecce44975.2020.9236358

Cited by 4 publications

(3 citation statements)

References 20 publications

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“…The control method based on I-CPG was proposed to limit the current of the photovoltaic field with the small variation in voltage of the photovoltaic field, at the cost of presenting a risk of short circuit in conditions of falling irradiance. Another method is based on the Observation and Disturbance Algorithm (P&O-CPG) [23,24]. To limit the power of the photovoltaic field, the voltage reference of the photovoltaic field is lowered until the power of the photovoltaic field falls below the power limit.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Hybridization of PV Plants with a BESS for Annual Constant Power Operation

Bayod-Rújula

Tejero-Gómez

2022

Energies

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The electrical generation of photovoltaic systems is variable and non-dispatchable. Energy storage systems can provide the system with energy management capabilities. In particular, with a hybrid system that combines a photovoltaic system and an energy storage system, it is possible to deliver firm power to the grid, if it is correctly dimensioned and operated. The objective of this work is to study the most appropriate relationship between the capacity of the battery energy storage system (BESS) and the peak power of the photovoltaic generator that enables the delivery of constant power throughout the year. Analysis parameters are presented that help to decide the most convenient energy injection constant value (PV-CPG set point) and the size of the storage system. As a case study, the most suitable battery capacity for a 1 MWp photovoltaic system with a battery located in Zaragoza (Spain), and the most convenient annual setpoint values for its operation are analyzed.

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Section: Introductionmentioning

confidence: 99%

Analysis of the Hybridization of PV Plants with a BESS for Annual Constant Power Operation

Bayod-Rújula

Tejero-Gómez

2022

Energies

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“…FIGURE 5 CPPs on P-V curves with the limited power 1. When the limited power is larger than the maximum power, the working point closest to P limit is GMPP where is no CPP.…”

Section: Cpp Distributionmentioning

confidence: 99%

“…Furthermore, the PV system that only applying MPPT control may cause the risk of overloading, i.e. the instability of voltage and even frequency, in the grid, because it has the inherent characteristic that the power is intensively produced at a certain time of day [5]. Several distribution system operators have started to reduce PV installations to avoid the extension [6].…”

Section: Introductionmentioning

confidence: 99%

A novel global FPPT strategy for PV system under partial shading condition

Xing,

Jia,

Yang

2023

IET Renewable Power Gen

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Flexible power point tracking (FPPT) is a common and significate photovoltaic control problem under partial shading conditions. Based on CPP and MPP distribution analysis, both constant power point tracking and maximum power point tracking could be mathematically described by a single objective optimization. As one of the recent meta‐heuristic algorithms, which avoid the limitations of conventional scanning methods, the carnivorous plant algorithm (CPA) solves non‐convex optimization problems with fast speed, high accuracy, and simple calculation. However, it exhibits several drawbacks such as inappropriate parameters, over‐searching, and feasible solution ignored issues. Therefore, a global FPPT strategy based on modified CPA (mCPA) is proposed, which includes a search objective integration, efficient non‐convex search space skipping strategy, and adaptive tuning parameters according to sensitivity analysis. By statistical experiments compared with eight popular meta‐heuristic algorithms, the mCPA can correctly converge to the global MPP under various scenarios with the highest accuracy of 99.0%. Meanwhile, the observations of dynamic experiments demonstrate the effectiveness of the proposed strategy in terms of fast time response (0.5–3 s) for global FPPT under various uniform and non‐uniform insolation conditions.

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