Design and implementation of a 5 kW photovoltaic system with li-ion battery and additional DC-DC converter

Bragard, Michael; Soltau, Nils; Doncker, Rik W. De; Schmiegel, Armin U.

doi:10.1109/ecce.2010.5618220

Cited by 21 publications

(4 citation statements)

References 6 publications

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“…With such a voltage, the circuit of charging batteries by the grid is more efficient since the voltage drop between the grid (as a source) and the battery are close together [31].…”

Section: Methodsmentioning

confidence: 99%

DC Environment for a Refrigerator With Variable Speed Compressor; Power Consumption Profile and Performance Comparison

Sabry

Ker

2020

IEEE Access

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DC power distribution in residential sector has regained interest among researchers and industrial players as new electronics-based appliances became locally available. However, the compatibility of appliances with DC distribution systems still requires much research effort. This work mainly explores on the power consumption profile of an inverter-driven Variable Speed Controller (VSC-based) refrigerator that has not yet been analyzed as one of the most important household loads. This paper compares the power consumption in two scenarios; 1) using three supply configurations for a VSC-based refrigerator, a Battery-Inverter-Load, a Battery-Load and Grid-Load, and 2) using a same AC power source to supply a VSC-based refrigerator and a same-size conventional refrigerator. This analysis helps toward modeling and energy estimation of PV system applications involving storage batteries. A wireless monitoring circuit has been employed to handle temperature, current and voltage measurements with a high sampling rate to cover the potential surge power. The experimental measurements show a better performance on using DC over AC power source and the power rate consumed has a smooth pattern at the starting-on time until approach a rated power. The measured efficiency of the Battery-Load topology approaches 99% compared to that of the Battery-inverter-load topology, which is approximately 78.5%. It is also found that the tested refrigerator with Battery-Load topology consumes an energy amounting to 1.850 kWh daily, while with Battery-inverterload topology consumes 2.466 kWh daily under the same operating conditions. These results can serve as a model for modeling refrigerators and other appliances that adopt speed controller technology to drive their motors.INDEX TERMS Compression refrigeration system, dc microgrid, total power consumption, building energy modeling, PV-battery systems.

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“…With such a voltage, the circuit of charging batteries by the grid is more efficient since the voltage drop between the grid (as a source) and the battery are close together [31].…”

Section: Methodsmentioning

confidence: 99%

DC Environment for a Refrigerator With Variable Speed Compressor; Power Consumption Profile and Performance Comparison

Sabry

Ker

2020

IEEE Access

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“…2. The array model and its features with current characteristic being identified in many spaces (Ding, 2010;Doncker, 2007) and describes the following expression (1) Where, (2) The distinctive standards of the constraints are given in (1) and 2that can be recognised at many circumstances (Boldue, 1993;Bragard, 2010;Ertl, H. J, 2002), A is represented for diode ideal aspect, k represents Boltzmann constant and the value of k is equivalent to 1.3×10 power of −23 J / K , T represents temperature on supreme scale in K, q is specified for its charge of electron and the value of q is 1.6 ×10−19C and ë is the radiation in kW/m2, Iphr is the short-trail current at 298 K and 1 kW/m2, is the coefficient's of current temperature at Iphr, EG0 is the band gap for silicon, Tr = 302.18K is reference temperature, Isatr is cell saturation current at Tr. PV cluster comprises of Ns cells in arrangement shaped the board and of Np boards in parallel as per the evaluated control required.…”

Section: Pv Array Modelmentioning

confidence: 99%

Design & Simulation of Flexible Control For 3-phase Grid Connected Solar PV System

Srinivasan¹,

Balamurugan²,

Shanmugasundaram³

2018

IJET

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A non-linear control progression for 3-stage (phase) lattice (grid) associated of PV generator is proposed here. This system is designed with PV arrays; grid filter; a voltage source inverter and a stimulating lattice or network. The regulator purposes are classified into three sections: i) making sure that the Most power point tracking (MPPT) are having photovoltaic boards, ii) assuring for power or control factor entity or unit in the grid plane iii) ensuring large-scale asymptotic constancy of the closed loop system. Lyapunov modelling approach is used by the controller and carried out by considering nonlinear model of the integral method. It is formally shown that the projected system controller congregates the scope of the objectives using a hypothetical constancy with stability analysis as well as simulation results.

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“…In contrast, stand-alone or off-grid photovoltaic (PV) systems using Li-ion batteries that are more efficient have gained popularity in recent years (Vonsien and Madlener, 2020). It is essential in that system to have an EMS between the photovoltaic cells, the battery, and the load in order to transfer the right amount of power between the sources and increase the lifespan of the battery (Rydh and Sandén, 2005;Bragard et al, 2010;Campana et al, 2021). In point of fact, it is possible to achieve the maximum power of the PV system by using a maximum power point tracking (MPPT) device.…”

Section: Introduction 1background and Motivationmentioning

confidence: 99%

An optimal energy management strategy for a photovoltaic/li-ion battery power system for DC microgrid application

Yaqoob¹,

Arnoos

Qasim

et al. 2023

Front. Energy Res.

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The purpose of this paper is to propose an energy management strategy (EMS) based on flatness control method for a standalone hybrid photovoltaic-battery system. The goal of the proposed method is to use non-linear flatness theory to develop an efficient EMS in order to provide a stable DC bus voltage and an optimal power sharing process between the solar array and the battery. The suggested EMS is responsible for balancing the power reference for the PV system and the battery while keeping the DC bus voltage steady and performing at its reference value. In order to maximize the PV’s power, a perturb and observe with a variable step size (VSSP and P&O) based maximum power point tracking (MPPT) method with a DC/DC boost converter was used. In addition, a DC/DC bidirectional converter was developed to control the charging and discharging process of the battery. Moreover, the proposed EMS strategy was verified in a MATLAB®/Simulink-based simulation environment by subjecting it to a variety of scenarios, including those with varying degrees of irradiation and sudden changes in load. The obtained results show that the presented EMS method was able to keep the bus voltage stable despite changes in load or solar radiation. Furthermore, the EMS By minimizing bus voltage spikes, the technique also ensured excellent power quality which helped the battery’s operation in terms of lifetime and efficiency. Finally, the suggested strategy has a minimum overshoot rate in the bus voltage and higher tracking efficiency compared with the classical load following (LF) strategy under various load conditions.

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Design and implementation of a 5 kW photovoltaic system with li-ion battery and additional DC-DC converter

Cited by 21 publications

References 6 publications

DC Environment for a Refrigerator With Variable Speed Compressor; Power Consumption Profile and Performance Comparison

DC Environment for a Refrigerator With Variable Speed Compressor; Power Consumption Profile and Performance Comparison

Design & Simulation of Flexible Control For 3-phase Grid Connected Solar PV System

An optimal energy management strategy for a photovoltaic/li-ion battery power system for DC microgrid application

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