A New Coupled-Inductor-Based High-Gain Interleaved DC-DC Converter With Sustained Soft Switching

Li, Bo; Wang, Ping; Wang, Zhishuang; Ma, Xiaochen; Bi, Huakun

doi:10.1109/tvt.2021.3083317

Cited by 15 publications

(8 citation statements)

References 32 publications

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“…To make the mathematical analysis simpler, the ripple in the capacitor voltage and inductor current is ignored. The expression for voltage VH at the high voltage side of the converter, by taking these parasitic elements into consideration is given by (22). Where, rL1 and rL2 are the ESR of the inductors L1 and L2 respectively.…”

Section: Efficiency Analysismentioning

confidence: 99%

“…Another significant advancement in this regard is the coupled inductor-based bidirectional converter (CIBDC) architecture [20][21][22][23][24][25] that aims to achieve a high voltage conversion ratio. Contrary to transformer-based topologies, these coupled inductor-based systems [20] allow energy exchange at several instants during the course of a single time period.…”

Section: Introductionmentioning

confidence: 99%

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Performance Analysis of a High Gain Bidirectional DC-DC Converter Fed Drive for an Electric Vehicle With Battery Charging Capability During Braking

Ragasudha,

Hemamalini

2024

IEEE Access

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This research presents a novel non-isolated high gain bidirectional DC-DC converter (BDC) and its application in integrating energy storage system with electric vehicle (EV). The proposed converter is capable of providing high voltage gain with the help of two duty cycle operation by employing fewer components in its circuit design. The proposed topology makes use of dual current path inductor structures which reduces their size and eliminates the need for an additional clamping circuit to give energy to the load. Without using voltage multiplier cells (VMC) or hybrid switched -capacitor approaches, the proposed converter can achieve a significant voltage gain. The simulation of the proposed converter-based drive is carried out using MATLAB/Simulink and OPAL-RT software in loop (SIL) system and the performance analysis is done for different driving conditions. The converter powers the motor through the battery during the forward motoring mode. The motor acts as a generator during regenerative braking and the energy is transferred back through the converter to the battery which stores the recovered energy.INDEX TERMS bidirectional dc-dc converter, high voltage gain, electric vehicle, regenerative braking, battery charging, OPAL-RT

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Section: Efficiency Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a High Gain Bidirectional DC-DC Converter Fed Drive for an Electric Vehicle With Battery Charging Capability During Braking

Ragasudha,

Hemamalini

2024

IEEE Access

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“…When semiconductor power switches are operated without additional circuits as hard switching (HS), sudden changes in current and voltage levels on the power elements can occur, and this causes EMI noises. A lot of problems caused by HS can be overcome owing to SS techniques 4–6 . In general terms, SS can be defined as the minimization or elimination of switching losses and EMI noises with additional circuits.…”

Section: Introductionmentioning

confidence: 99%

“…A lot of problems caused by HS can be overcome owing to SS techniques. [4][5][6] In general terms, SS can be defined as the minimization or elimination of switching losses and EMI noises with additional circuits. Additional circuits integrated into the converters in order to realize SS are called snubber cell.…”

mentioning

confidence: 99%

A novel zero voltage transition boost converter and artificial neural network‐based estimation of converter efficiency

Tınğ

Aslay

Şahin

2022

Circuit Theory & Apps

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In this paper, a novel zero voltage transition (ZVT) boost converter is proposed, and the overall efficiency of the converter is predicted with an artificial neural network (ANN) model. In the proposed converter, the main switch is turned on by ZVT and turned off by zero voltage switching (ZVS). Also, the other semiconductor elements operate by soft switching (SS). Besides, the proposed snubber cell has the bidirectional direct power transfer feature. The theoretical analyzes of the converter are verified by an prototype having 50 V DC input voltage, 100 V DC output voltage, 250 W output power, and 100 kHz switching frequency. The overall efficiency of the converter in hard switching (HS) condition is increased from 87.2% to 95.4% thanks to proposed snubber cell. Moreover, the efficiency of converter at HS operation is estimated with ANN. For this estimation, 110 efficiency values are obtained based on the different switching frequency and the output power values. When the actual efficiency measurements and the estimation results obtained with the ANN model are compared, it is seen that the results overlap and is obtained very close result to the truth by ANN. Thus, owing to the ANN model, the semiconductor power elements will not need to be operated at high frequencies and overheating, and the damaging to the elements will be prevented. Finally, the efficiency curve measurement of the converter takes long time in the experimental study when it takes highly short time as a few minutes in the estimation with ANN.

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“…A number of DC-DC converter topologies have been discussed in literature for their implementation in EV traction system and a review of these topologies is presented in [6]. In [17], [18], high gain DC-DC converter for EV traction system has been proposed. In [19]- [20], wide input voltage range, high gain DC-DC converter for EV traction system have been proposed.…”

Section: Introductionmentioning

confidence: 99%

Novel Electric Vehicle Traction Architecture With 48 V Battery and Multi-Input, High Conversion Ratio Converter for High and Variable DC-Link Voltage

Gupta¹,

Chakraborty²

2021

IEEE Open J. Veh. Technol.

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A new architecture for electric vehicle (EV) traction system with multiple low voltage battery packs and high conversion ratio DC-DC converters is proposed here. In EV traction systems, higher voltage motors offer improved efficiency and power density. High power DC fast charging also favors charging at high DC voltages to limit the charging cable current to manageable levels. However, the optimum battery voltage is relatively low considering factors such as issues with large number of cells in series and safety. In some designs, a boost DC-DC converter is employed to accommodate large variation in battery voltage and provide a high DC link voltage. However, the DC link cannot go below the battery voltage (for example, 360 V) which limits the benefits of the DC-DC converter. The proposed architecture with multiple 48 V battery packs and integrated, multi-input, high conversion ratio DC-DC converters, can reduce the maximum voltage in the vehicle during emergencies to 48 V, mitigate issues with large number of cells in series, and provide a wide variable DC link voltage. It enables independent charging/discharging control of the different low-voltage battery modules ensuring cell balancing and enhancing reliability. The proposed topology significantly reduces the voltage stress and peak/RMS current stress of the switches. It features seamless bi-directional power flow characteristics, which support regenerative braking and high voltage DC fast charging. Four distinct configurations are analyzed and the configurations with interleaving are shown to improve performance and significantly reduce the filter inductor size. The proposed high conversion ratio converter (HCRC) operation for EV application is verified experimentally through a 4-phase multi-input, 4 kW hardware prototype. With the nominal input fixed to 48 V, the output voltage is controlled to vary between 200 V to 800 V. The converter achieves a peak efficiency of 98.36% and a full-load efficiency of 97.3% at 50 kHz switching frequency for the interleaved configuration.

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A New Coupled-Inductor-Based High-Gain Interleaved DC-DC Converter With Sustained Soft Switching

Cited by 15 publications

References 32 publications

Performance Analysis of a High Gain Bidirectional DC-DC Converter Fed Drive for an Electric Vehicle With Battery Charging Capability During Braking

Performance Analysis of a High Gain Bidirectional DC-DC Converter Fed Drive for an Electric Vehicle With Battery Charging Capability During Braking

A novel zero voltage transition boost converter and artificial neural network‐based estimation of converter efficiency

Novel Electric Vehicle Traction Architecture With 48 V Battery and Multi-Input, High Conversion Ratio Converter for High and Variable DC-Link Voltage

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