Novel Bidirectional Isolated DC/DC Converter with High Gain Ratio and Wide Input Voltage for Electric Vehicle Storage Systems

Wu, Yu-En; Tai, Chen-Han

doi:10.3390/batteries8110240

Cited by 9 publications

(8 citation statements)

References 24 publications

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“…Table 5 shows the main performance parameters of 8 high-gain bidirectional converters [22][23][24][25][26][27][28][29] and ten unidirectional converters [30][31][32][33][34][35][36][37][38][39] compared to the proposed topology. The [34]…”

Section: Plos Onementioning

confidence: 99%

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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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Section: Plos Onementioning

confidence: 99%

“…Cascaded boost stages [ 22 , 23 ], quasi-Y sources [ 24 ], switched coupled inductors [ 25 ] are developed to achieve high voltage gain with interleaved boost converters. Leakage inductance stresses switches in the DC-DC flyback converter, which has a simple construction and high voltage gain [ 26 ].…”

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 third category of buck-boost converters encompasses bidirectional converter types [28][29][30]. Bidirectional converters assume a pivotal role in energy recuperation in EVs, enabling the transfer of energy between the vehicle's battery and the electrical grid [31][32][33].…”

Section: From a Solitary Input Voltagementioning

confidence: 99%

A Proposed Single-Input Multi-Output Battery-Connected DC–DC Buck–Boost Converter for Automotive Applications

Tekin,

Setrekli,

Murtulu

et al. 2023

Electronics

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In the realm of electric vehicles (EVs), achieving diverse direct current (DC) voltage levels is essential to meet varying electrical load demands. This requires meticulous control of the battery voltage, which must be adjusted in line with specific load characteristics. Therefore, the integration of a well-designed power converter circuit is crucial, as it plays a pivotal role in generating different DC voltage outputs. In this study, we also consider the incorporation of two additional doubler/divider circuits at the end of the proposed converter, further enhancing its capacity to produce distinct DC voltage levels, thus increasing its versatility. The standout feature of the proposed converter lies in its remarkable ability to amplify DC voltages significantly. For instance, when the input battery voltage is set at 48 VDC with a duty cycle (D) of 0.8, the resulting output demonstrates a remarkable augmentation, producing voltages 18, 36, and 72 times higher than the input voltage. Conversely, with a reduced D of 0.2 while maintaining the input voltage at 48 VDC, the converter yields diminished voltages of 0.1875, 0.375, and 0.75 times the initial voltage. This adaptability, based on the parameterization of D, underscores the converter’s ability to cater to a wide range of voltage requirements. To oversee the intricate operations of this versatile converter, a high-speed DSP-based controller system is employed. It utilizes the renowned PID approach, known for its proficiency in navigating complex, nonlinear systems. Experimental results validate the theoretical and simulation findings, reaffirming the converter’s practical utility in EV applications. The study introduces a simple control mechanism with a single power switch, high efficiency for high-power applications, wide voltage range, especially with VDC and VMC cells, and continuous current operation for the load in CCM mode. This study underscores the significance of advanced power conversion systems in shaping the future of electric transportation.

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“…Energies 2024, 17, 2434 2 of 29 aerospace applications, and renewable energy systems [11][12][13], such as photovoltaic (PV) arrays [14][15][16][17], fuel cells (FCs) [18,19], and other renewable energy systems [20], as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Overview of Isolated Bidirectional DC–DC Converter Topology and Switching Strategies for Electric Vehicle Applications

Wang,

Su,

Zeng

et al. 2024

Energies

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Isolated bidirectional DC–DC converters are becoming increasingly important in various applications, particularly in the electric vehicle sector, due to their ability to achieve bidirectional power flow and their safety features. This paper aims to review the switch strategies and topologies of isolated bidirectional DC–DC converters, with a specific focus on their applications in the field of electric vehicles. From the perspective of topology, PWM-type isolated bidirectional DC–DC converters, dual active bridge converters, and resonant-type isolated bidirectional DC–DC converters constitute the three main categories of these converters. The paper further examines the traditional switch strategies of these converters and discusses how specific switch technologies, such as single-phase shift, expanding-phase shift, double-phase shift, and triple-phase shift, can enhance the overall performance of isolated bidirectional DC–DC converters. The paper meticulously examines the characteristics of each topology and control scheme, as well as their typical use cases in practical applications. Particularly, the paper delves into the applications of isolated bidirectional DC–DC converters in the electric vehicle sector and draws conclusions regarding their potential and trends in future electric vehicle technology.

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Novel Bidirectional Isolated DC/DC Converter with High Gain Ratio and Wide Input Voltage for Electric Vehicle Storage Systems

Cited by 9 publications

References 24 publications

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

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

A Proposed Single-Input Multi-Output Battery-Connected DC–DC Buck–Boost Converter for Automotive Applications

Overview of Isolated Bidirectional DC–DC Converter Topology and Switching Strategies for Electric Vehicle Applications

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