Design and Realization of a Bi-directional DC/DC Converter in photovoltaic power system

Zhang, Guoqin; Dai, Yongjun; Cui, Jiamin

doi:10.2991/ifeesd-16.2016.197

Cited by 17 publications

(9 citation statements)

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“…They were then applied to a proportional integral (PI) and a PWM controller to control the input signal of the inverter [28]. A BD buck-and boostbased converter [29] has immense potential for efficient energy transfer as both switches play a pivotal role in directing the flow of power. The metal-oxide-semiconductor field-effect transistor (MOSFET) (1) switch functions as a buck converter and channels power to the ES battery, as well as ensures the optimal utilisation and preservation of power while the MOSFET (2) switch kicks in when power must be channelled to the grid, thereby, facilitating the seamless exchange of energy.…”

Section: Rated Voltage 656 Vmentioning

confidence: 99%

Intermetallic compound layer formation in indium-based micro-bump array fabrication technology for IR detectors

Kozłowski,

Jasik,

Łaszcz

et al. 2024

Opto-Electronics Review

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Growing energy demands are expected to render existing energy resources insufficient. Solar energy faces challenges in terms of providing continuous and reliable power supply to consumers. However, it has become increasingly important to implement renewable energy (RE) and energy management (EM) systems to increase the supply of power, improve efficiency, and maintain the stability of energy systems. As such, this present study integrated energy storage (ES) devices; namely, batteries and direct current (DC) to DC converters; into energy systems that support battery operation and effectively manage power flow, especially during peak load demands. The proposed system also addresses low solar irradiation and sudden load change scenarios by enabling the battery to operate in a discharge state to supply power to the load. Conversely, when the demand matches or exceeds the available solar energy, the battery is charged using solar power. The proposed system highlights the significance of RE systems and EM strategies in meeting growing energy demands and ensuring a reliable supply of power during solar variability and fluctuating loads. A MATLAB® Simulink model was used to evaluate the integration of a 200 kW photovoltaic (PV) array with a 380 V grid and 150 kW battery. The loads, consisting of a 100 kW and a 150 kW unit, were parallel connected. The results indicated that boost and three-phase (3Ph) inverters can be used to successfully integrate PV systems to the power grid to supply alternating current (AC) power. The inclusion of a battery also addressed power shortages during periods of insufficient power generation and to store surplus power.

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Section: Rated Voltage 656 Vmentioning

confidence: 99%

Intermetallic compound layer formation in indium-based micro-bump array fabrication technology for IR detectors

Kozłowski,

Jasik,

Łaszcz

et al. 2024

Opto-Electronics Review

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“…Selection of the inductor: The inductor in the bidirectional DC-DC converter is designed based on the circuit's operating mode, which can be either continuous current mode (CCM) or discontinuous current mode (DCM), as well as the desired level of current ripple. In cases where the DC-DC converter operates in buck CCM, the inductor's ripple current can be described as follows [84,86]:…”

Section: Bidirectional Dc-dc Converter Circuit Parameter Designmentioning

confidence: 99%

“…Likewise, when the bidirectional DC-DC converter functions in the boost CCM, we can express the inductor ripple current using Equation (34), as referenced in [86,87]:…”

Section: Bidirectional Dc-dc Converter Circuit Parameter Designmentioning

confidence: 99%

Smoothing Intermittent Output Power in Grid-Connected Doubly Fed Induction Generator Wind Turbines with Li-Ion Batteries

Behabtu,

Vafaeipour,

Kebede

et al. 2023

Energies

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Wind energy is an increasingly important renewable resource in today’s global energy landscape. However, it faces challenges due to the unpredictable nature of wind speeds, resulting in intermittent power generation. This intermittency can disrupt power grid stability when integrating doubly fed induction generators (DFIGs). To address this challenge, we propose integrating a Li-ion battery energy storage system (BESS) with the direct current (DC) link of grid-connected DFIGs to mitigate power fluctuations caused by variable wind speed conditions. Our approach entails meticulous battery modeling, sizing, and control methods, all tailored to match the required output power of DFIG wind turbines. To demonstrate how well our Li-ion battery solution works, we have developed a MATLAB/Simulink R2022a version model. This model enables us to compare situations with and without the Li-ion battery in various operating conditions, including steady-state and dynamic transient scenarios. We also designed a buck–boost bidirectional DC-DC converter controlled by a proportional integral controller for battery charging and discharging. The battery actively monitors the DC-link voltage of the DFIG wind turbine and dynamically adjusts its stored energy in response to the voltage level. Thus, DFIG wind turbines consistently generate 1.5 MW of active power, operating with a highly efficient power factor of 1.0, indicating there is no reactive power produced. Our simulation results confirm that Li-ion batteries effectively mitigate power fluctuations in grid-connected DFIG wind turbines. As a result, Li-ion batteries enhance grid power stability and quality by absorbing or releasing power to compensate for variations in wind energy production.

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“…Perbedaan diproses melalui kontrol PI untuk mendapatkan PWM. Kontrol ini dapat menghasilkan tegangan stabil untuk suplai bus DC di sisi tegangan tinggi dan arus stabil untuk pengisian baterai di sisi tegangan rendah [7].…”

Section: Kontrol Piunclassified

Desain dan Simulasi Bidirectional DC-DC Converter untuk Penyimpanan Energi pada Sistem Fotovoltaik

Pratiwi¹,

Nugraha²,

Sunarno³

2020

JNTETI

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Dalam makalah ini didesain dan disimulasikan bidirectional DC-DC converter untuk penyimpanan energi pada sistem fotovoltaik menggunakan Simulink MATLAB. Bidirectional DC-DC converter dapat bekerja dalam dua mode, yaitu mode pengisian dan mode pengosongan. Sistem penyimpanan energi bekerja untuk menyimpan energi ke dalam baterai ketika kapasitas pembangkitan energi lebih tinggi dari permintaan beban. Selanjutnya, energi yang disimpan dalam baterai akan digunakan untuk suplai bus DC ketika kapasitas pembangkitan energi lebih rendah dari permintaan beban. Untuk memperoleh tegangan konstan di sisi tegangan tinggi (tegangan bus DC) dan arus konstan di sisi tegangan rendah (arus pengisian), digunakan kontrol PI. Pengujian simulasi dilakukan dengan iradiasi 1.000 W/m2 untuk memperoleh kondisi energi pembangkitan lebih tinggi dari permintaan beban (mode pengisian) dan iradiasi 200 W/m2 untuk memperoleh kondisi energi pembangkitan lebih rendah dari permintaan beban (mode pengosongan), dengan temperatur tetap, yaitu 25 °C. Hasil simulasi menunjukkan bahwa bidirectional DC-DC converter dapat bekerja dalam mode pengisian maupun mode pengosongan, yang ditunjukkan dengan arus pengisian baterai dan kenaikan atau penurunan tegangan baterai.

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Design and Realization of a Bi-directional DC/DC Converter in photovoltaic power system

Cited by 17 publications

References 0 publications

Intermetallic compound layer formation in indium-based micro-bump array fabrication technology for IR detectors

Intermetallic compound layer formation in indium-based micro-bump array fabrication technology for IR detectors

Smoothing Intermittent Output Power in Grid-Connected Doubly Fed Induction Generator Wind Turbines with Li-Ion Batteries

Desain dan Simulasi Bidirectional DC-DC Converter untuk Penyimpanan Energi pada Sistem Fotovoltaik

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