Switched-capacitor-based high-gain DC–DC converter for fuel cell vehicle powertrain

Wu, Xiaogang; Wang, Jiulong; Zhang, Yun; Liu, Zhengxin

doi:10.1007/s43236-022-00388-z

Cited by 5 publications

(4 citation statements)

References 20 publications

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“…The major contribution of this article is this numerical analysis, which will enable the future studies to incorporate the appropriate DC-DC converter for BLDC drive. In this context, switched-capacitor based SEPIC converter has been introduced in this paper that shows a higher voltage boost ratio compared to other converters presented in [20]- [23]. The switched capacitor plays a vital role here as it helps to reduce the voltage stress across switches used in converters.…”

Section: Introductionmentioning

confidence: 99%

“…The desired waveform of current is rectangular in shape but practically it is not the same. The actual phase current is trapezoidal in shape comprising of finite rise time and fall time due to the presence of stator inductance [23]- [27]. The actual shape of phase current obtained is presented in Figure 2.…”

mentioning

confidence: 99%

“…A comparative analysis of output voltages of converters presented in[20]-[23] and the proposed converter for D = 65%…”

mentioning

confidence: 99%

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A novel technique for torque ripple suppression in BLDC motor drive using switched capacitor based SEPIC converter

Saha,

Chowdhury,

Chattopadhyay

et al. 2024

IJPEDS

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This article reports a strategy for suppressing commutation torque ripple has been proposed by modifying a SEPIC converter using switched capacitor. The torque ripple generated during the commutation period is one of the main disadvantages of a brushless DC (BLDC) motor. The cause for the torque ripple in brushless DC motor has been mathematically analyzed in this work. Henceforth, a modified switched-capacitor based DC-DC converter has been proposed for integration with BLDC drive. Moreover, a theoretical analysis of the relationship has been established between the duty ratio of the DC-DC converter with commutation time and torque ripple. A low cost and simple method to control the dc link voltage of BLDC drive has been proposed and a comparative analysis of the proposed converter with previously existing similar converters has been shown. This work aims at reducing ripple in electromagnetic torque of BLDC motor from the view point of duty ratio of the DC-DC converter and commutation time of the drive. The feasibility of the drive has been evaluated experimentally and through simulation. It has been observed that the integration of the proposed converter with BLDC drive help in torque ripple suppression to 16.5% as compared to BLDC drive without any DC-DC converter.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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A novel technique for torque ripple suppression in BLDC motor drive using switched capacitor based SEPIC converter

Saha,

Chowdhury,

Chattopadhyay

et al. 2024

IJPEDS

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“…In this study, we present an integration of switchedinductor (SL) 44,45) and switched-capacitor (SC) 46,47) methodologies into the traditional Cuk converter [48][49] , leading to the development of new enhanced high gain Cuk converters. The motivation for selecting the Cuk converter stems from its unique advantages in certain applications, such as its non-inverted output, continuous input and output currents, and its capability for both stepup and step-down voltage conversions.…”

Section: Introductionmentioning

confidence: 99%

High-Gain Cuk DC-DC Converter with Switch-Capacitor and Switched Inductor: A Non-Isolated Design

A. Clement Raj,

R. Bens Raj

2023

Evergreen

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This work introduces the DC-DC topology of a non-isolated high-gain step-up Cuk converter. The proposed topology is based on implementing switched-capacitor (SC) and switchedinductor (SL) techniques. The primary focus of this topology is the application in renewable energy systems and electric vehicles, specifically in photovoltaic and fuel cell technologies. The proposed topology exhibits a notable enhancement in voltage boost capability when compared to the traditional boost and Cuk converters, owing to the implementation of SC and SL approaches. The suggested Cuk converters are obtained by modifying the original Cuk converter, wherein the single inductor present at the output and input sides is substituted with an SL, and the energy-transferring capacitor is replaced with an SC. The primary benefits of the recommended Cuk converters lie in their ability to achieve a high output voltage gain and mitigate the voltage stress experienced by the power switch. Hence, it is possible to utilize a MOSFET with a lower voltage capacity, resulting in a lesser Rds-ON and increasing efficiency. A comparison has been made between the voltage gain and voltage stress across the primary switch in the proposed converter and the Cuk and boost converter. The recommended topology is intended to circumvent the need for a transformer, coupled inductors, or severe duty cycles. This design approach results in reduced volume, loss, and cost. The proposed converter is evaluated under the continuous conduction mode. The present study provides a theoretical investigation of the continuous conduction mode, whereby all relevant expressions are derived and compared with the corresponding simulation results.

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Review and Analysis of Non-isolated High Step-Up DC/DC Converter Topologies

Zheng,

Zhang,

et al. 2023

Lecture Notes in Electrical Engineering

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Switched-capacitor-based high-gain DC–DC converter for fuel cell vehicle powertrain

Cited by 5 publications

References 20 publications

A novel technique for torque ripple suppression in BLDC motor drive using switched capacitor based SEPIC converter

A novel technique for torque ripple suppression in BLDC motor drive using switched capacitor based SEPIC converter

High-Gain Cuk DC-DC Converter with Switch-Capacitor and Switched Inductor: A Non-Isolated Design

Review and Analysis of Non-isolated High Step-Up DC/DC Converter Topologies

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