A Novel High-Gain DC-DC Converter Applied in Fuel Cell Vehicles

Wu, Xiaogang; Yang, Ming; Zhou, Ming; Zhang, Yu; Fu, Jun

doi:10.1109/tvt.2020.3023545

Cited by 61 publications

(25 citation statements)

References 32 publications

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“…The topology proposed in Pires et al, 3 though has similar voltage stress across the switch as the proposed topology, but has a gain 62.5% lower than the proposed topology at the duty ratio of 0.5 and also lacks a common ground. The converter 4 however offers a very low efficiency and does not have a common ground as compared to the proposed topology while the converter 5 does not have a continuous input current which makes the converters incapable of renewable energy and DC microgrid applications. The converter proposed in Zaid et al 13 has the same number of inductors and an extra switch as compared to the proposed topology but still produces a lower gain and high voltage stress across the switch which exceeds the proposed topology as the voltage gain goes over 16.…”

Section: Comparison Of the Proposed Converter With Various Similar To...mentioning

confidence: 99%

“…From Figure 22, it is seen that the converter in Wu et al 5 has a high gain per inductor, but due to the restricted duty cycle and discontinuous input current, the converter cannot be utilized for microgrid or renewable applications. The converter in Mahmood et al 15 also has a higher gain per inductor as compared to the proposed converter but it lacks a common ground.…”

Section: Comparison Of the Proposed Converter With Various Similar To...mentioning

confidence: 99%

“…The rectification of AC waveform to DC introduces high harmonic content in the line current which deteriorates the power quality. Another problem that arises is that when a DC voltage is available after rectification it needs to be boosted up to be used for various practical applications like solar PV system applications, 2,3 switch-mode power supplies (SMPS), electric vehicles, and fuel-cell applications [3][4][5] as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

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Implementation and reliability analysis of a new transformerless high‐gain DC‐DC converter for renewable energy applications

et al. 2022

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In this paper, a new high-gain quadratic boost DC-DC converter is proposed for a DC microgrid. The converter has a voltage multiplier cell made up of switched inductors to obtain a high voltage at the output. It has a common ground and continuous input current, which makes the converter feasible for renewable energy and DC microgrid applications. The proposed topology consists of a single switch which makes the control simple. The converter achieves a gain of four times the traditional quadratic boost converter and can also operate in continuous and discontinuous conduction modes. The voltage stress across the switch and all the other passive components is less than the output voltage. The variation of voltage gain in the case of parasitic resistances is also shown. The reliability analysis of the proposed converter using Markov modeling is also presented by considering both open-circuit and short-circuit faults across the semiconductor devices. A 200 W prototype of the converter is also prepared and the hardware results of the converter are also presented in the paper. The converter operates at high efficiency of 96% at 100 W output power operation. The variation of reliability with different converter parameters like the duty cycle and the input voltage is also discussed in the paper. The experimental results in fault conditions are also shown.

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Section: Comparison Of the Proposed Converter With Various Similar To...mentioning

confidence: 99%

Section: Comparison Of the Proposed Converter With Various Similar To...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Implementation and reliability analysis of a new transformerless high‐gain DC‐DC converter for renewable energy applications

et al. 2022

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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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“…High gain converters are essential for renewable energy applications like photo voltaic systems, fuel cells etc. [2]. In [3], boost converter designed with switched inductor configuration is described.…”

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confidence: 99%

Augmented ASC Network for Photo Voltaic Applications

Kalarathi¹,

Gnanavadivel²,

Jayanthi³

2022

IJEER

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This work uses a DC-DC converter that employs an Active Switched Capacitor (ASC) to provide high gain that makes it appropriate for the Photo Voltaic (PV) system. The transformer less converter with an ASC network consists of a capacitor and a diode that boosts voltage effectively. The well-liked converter operates effectually on both Continuous Conduction Mode (CCM) and Discontinuous Conduction Modes (DCM). The suggested topology of converter is easy to design, and it renders a less stress on auxiliary diode and capacitors. This preferred converter scheme is validated through MATLAB Simulink and the outcomes are confirmed using hardware prototype.

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A Novel High-Gain DC-DC Converter Applied in Fuel Cell Vehicles

Cited by 61 publications

References 32 publications

Implementation and reliability analysis of a new transformerless high‐gain DC‐DC converter for renewable energy applications

Implementation and reliability analysis of a new transformerless high‐gain DC‐DC converter for renewable energy applications

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

Augmented ASC Network for Photo Voltaic Applications

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