Design and Development of a Novel High Voltage Gain, High-Efficiency Bidirectional DC–DC Converter for Storage Interface

Shreelakshmi, M P; Das, Moumita; Agarwal, Vivek

doi:10.1109/tie.2018.2860539

Cited by 68 publications

(14 citation statements)

References 30 publications

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“…The ESS to be installed has a relatively large capacity, whereas the PCSs of other renewable energy sources have a relatively small capacity. A typical power conversion device has low efficiency at light load, and high efficiency at heavy and rated loads [38,39]. Efficiency deviation is present as an error in predicting the battery state by measuring the RES power generation of the MG and the amount of power supplied to the load.…”

Section: Proposed Operation Methods Of the Microgrid Pcsmentioning

confidence: 99%

Power Conversion System Operation Algorithm for Efficient Energy Management of Microgrids

Lee

Kim

et al. 2021

Electronics

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This paper investigates the operation of each power conversion system (PCS) for efficient energy management systems (EMSs) of microgrids (MGs). When MGs are linked to renewable energy sources (RESs), the reduction in power conversion efficiency can be minimized. Furthermore, energy storage systems (ESSs) are utilized to manage the surplus power of RESs. Thus, the present work presents a method to minimize the use of the existing power grid and increase the utilization rate of energy generated through RESs. To minimize the use of the existing power grid, a PCS operation method for photovoltaics (PV) and ESS used in MGs is proposed. PV, when it is directly connected as an intermittent energy source, induces voltage fluctuations in the distribution network. Thus, to overcome this shortcoming, this paper utilizes a system that connects PV and a distributed energy storage system (DESS). A PV-DESS integrated module is designed and controlled for tracking constant power. In addition, the DESS serves to compensate for the insufficient power generation of PV. The main energy storage systems (MESSs) used in MGs affect all aspects of the power management in the system. Because MGs perform their operations based on the capacity of the MESS, a PCS designed with a large capacity is utilized to stably operate the system. Because the MESS performs energy management through operations under various load conditions, it must have constant efficiency under all load conditions. Therefore, this paper proposes a PCS operation algorithm with constant efficiency for the MESS. Utilizing the operation algorithm of each PCS, this paper describes the efficient energy management of the MG and further proposes an algorithm for operating the existing power grid at the minimum level.

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Section: Proposed Operation Methods Of the Microgrid Pcsmentioning

confidence: 99%

Power Conversion System Operation Algorithm for Efficient Energy Management of Microgrids

Lee

Kim

et al. 2021

Electronics

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“…On the other hand, the phase-shifted full-bridge converter generates higher input ripple currents. It achieves a high increase gain by using a higher number of turns ratio in the transformer [ 27 , 28 ]. Electrolytic capacitors are used in the phase-shifted full-bridge converter to reduce input current ripples.…”

Section: Introductionmentioning

confidence: 99%

An efficient high-gain bidirectional interleaved boost converter for PV integration to DC microgrid

Sreelatha,

Pandian,

Reddy

et al. 2024

PLoS ONE

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The design of a power electronic interface for high voltage difference DC buses is a key aspect in DC microgrid applications. A multi-port non isolated interleaved high-voltage gain bidirectional converter, which facilitates bidirectional power transfer and islanded operation in a DC microgrid, is presented in this paper. The forward high-voltage transfer ratio is achieved using a voltage multiplier circuit, and the high-gain step-down power conversion is performed using a resonant power module. A novel power transfer selection algorithm is proposed to control power flow among the interfaces of the RES, ESS, and DC grid converters, which utilizes the net power difference as the basis for switching the converter. The proposed converter is simulated for a 24 V PV source, 12 V battery, and 400 V DC grid interface using MATLAB/SIMULINK. A 200 W hardware prototype is implemented. The simulation results for voltages, currents, and power flow among RES, ESS, and microgrid DC bus proved an excellent voltage regulation, efficient power conversion, and a feasible duty cycle range with high voltage gain. These observations are validated through equivalent experimental results. A comparison is made regarding achieved gain, component sizing, achievable power transfer modes, efficiency, and control complexity with existing converters for DC microgrid applications. The presented topology proved to be a better interface with multiple-mode support with high efficiency.

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“…Energy-regeneration strategies have been applied to mitigate this stress. The phase-shifted full-bridge converter, on the other hand, generates higher input ripple currents and achieves a high voltage gain by using a higher turn ratio in the transformer [12,13]. Electrolytic capacitors are employed in the phase-shifted full-bridge converter to reduce input current ripples.…”

Section: Introductionmentioning

confidence: 99%

Design of Symmetrical Voltage Multiplier High Gain Interleaved DC to DC Converter for Photovoltaic Applications

Sreelatha,

Pandian,

Sarala

et al. 2024

Eng. Technol. Appl. Sci. Res.

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High voltage gain interleaved DC to DC boost converters are employed in Photovoltaic (PV) energy conversion for their structural advantage. The proposed converter builds upon the existing two-phase interleaved DC to DC boost converter, which is commonly used in utility grid integration circuits to minimize ripple current from the PV. The aim is to enhance the output voltage of the currently installed PV array in order to cater to high-power applications or grid integration. The key requirements include achieving high-efficiency power conversion and fully utilizing the potential of the PV system. The methods being proposed to increase the PV output voltage suffer from drawbacks such as low efficiency, complexity, and cost. In contrast, the suggested DC-DC converter boasts a remarkable efficiency of 96% and is capable of converting voltage from 25 V to 400 V for a power output of 400 W. The designed converter has been simulated in MATLAB software and the performance is compared to existing converters related to voltage stress, voltage gain against given duty cycle, and efficiency.

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Design and Development of a Novel High Voltage Gain, High-Efficiency Bidirectional DC–DC Converter for Storage Interface

Cited by 68 publications

References 30 publications

Power Conversion System Operation Algorithm for Efficient Energy Management of Microgrids

Power Conversion System Operation Algorithm for Efficient Energy Management of Microgrids

An efficient high-gain bidirectional interleaved boost converter for PV integration to DC microgrid

Design of Symmetrical Voltage Multiplier High Gain Interleaved DC to DC Converter for Photovoltaic Applications

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