Single‐switch, integrated DC–DC converter for high‐voltage step‐down applications

Oliveira, Igor Rodrigues de; Morais, Aniel Silva de; Tofoli, Fernando Lessa

doi:10.1049/iet-pel.2018.5355

Cited by 14 publications

(10 citation statements)

References 23 publications

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“…. , n 􏼈 􏼉, describing d attributes for selecting samples of the data set X, where each data x i includes its travel value, operating time, and switching speed and can be represented by data attributes such as switching current, charging time, and switching type [15].…”

Section: Establishment Of the Standard Data Modelmentioning

confidence: 99%

Real-Time Monitoring of High Voltage Switch Based on CAD

Long¹,

Xiao²,

Hu³

et al. 2022

Advances in Multimedia

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In the process of online real-time monitoring of intelligent digital filter high-voltage switchgear, the mechanical state diagnosis of high-voltage circuit breaker is based on fully understanding the mechanical characteristics of each component of circuit breaker. In this paper, K-means clustering algorithm is applied to the mechanical state detection of digital filter high-voltage switchgear. The mechanical state of the digital filter high-voltage switchgear is monitored in real time by using 126 kV GIS. Through fault simulation experiment and mechanical stability experiment, the corresponding changes of characteristics of each mechanical component of circuit breaker in signal waveform and corresponding data changes are found. The experimental results show that this method has good running speed and stability and is more suitable for the real-time monitoring of intelligent digital filter high-voltage switchgear.

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Section: Establishment Of the Standard Data Modelmentioning

confidence: 99%

Real-Time Monitoring of High Voltage Switch Based on CAD

Long¹,

Xiao²,

Hu³

et al. 2022

Advances in Multimedia

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“…number of components in the power stage, operational switching frequency, tested step-down ratio and efficiency/power density. Table IV shows that the converter proposed in [19] operates with the least amount of active semiconductors in the power stage although exhibits the lowest peak efficiency. The proposed family of converters is tested with the highest ratio (25:1) between input and output voltages among the compared topologies.…”

Section: B Resultsmentioning

confidence: 99%

A Family of DC–DC Converters With High Step-Down Voltage Capability Based on the Valley-Fill Switched Capacitor Principle

Vecchia

Broeck

Ravyts

et al. 2021

IEEE Trans. Ind. Electron.

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In this paper, a family of interleaved high-stepdown (I-HSD) DC-DC converters is proposed integrating the Valley-Fill switched capacitor structure and a double series capacitor Buck converter. This integration generates three converters, which will be extensively explored herein via theoretical and experimental analysis. A complete theoretical analysis of the structures is presented in order to mathematically explain the physical operation of the proposed topologies. A design procedure is presented for the following specifications: 300 V/12 V input to output voltage, 100 W of power and a switching frequency of 100 kHz and the results obtained are compared to state-of-theart DC-DC converters that enable similar high step-down operation.

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“…The converter was analyzed by simulations carried out in PSIM considering a voltage gain of five times similarly to 31 . The operating point was chosen considering the limited availability of component in the laboratory and match that of the experimental prototype described in Section 5.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Input voltage The converter was analyzed by simulations carried out in PSIM considering a voltage gain of five times similarly to. 31 The operating point was chosen considering the limited availability of component in the laboratory and match that of the experimental prototype described in Section 5. Thus, Table 1 presents design specifications of the proposed converter, which is assessed in step-up and step-down modes as follows.…”

Section: Parameters Valuesmentioning

confidence: 99%

Non‐isolated high step‐up / step‐down DC–DC quadratic Ćuk converter

Oliveira

Ribeiro

Morais

et al. 2021

Int Trans Electr Energ Syst

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This work presents a non-isolated DC-DC quadratic Cuk topology, which results from the cascade connection of two conventional Cuk converters. Using the graft scheme and rearranging the power stage, it is possible to obtain a single-switch version of the converter with fewer components when compared with its two-switch counterpart. The converter can provide both voltage stepdown and step-up by varying the duty cycle imposed to the active switch, this being an interesting solution for applications that demand a wide conversion range. Both the current drawn from the source and supplied to the output stage are non-pulsating when the converter operates in continuous conduction mode (CCM), contributing to the reduction of electromagnetic interference (EMI) levels. Both the input voltage and output voltage present the same polarity as well. A comprehensive mathematical analysis is derived for the converter operating in step-up and step-down modes, as it is possible to obtain a consistent design procedure. A laboratory prototype is also implemented and thoroughly assessed experimentally to validate the theoretical assumptions.

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Single‐switch, integrated DC–DC converter for high‐voltage step‐down applications

Cited by 14 publications

References 23 publications

Real-Time Monitoring of High Voltage Switch Based on CAD

Real-Time Monitoring of High Voltage Switch Based on CAD

A Family of DC–DC Converters With High Step-Down Voltage Capability Based on the Valley-Fill Switched Capacitor Principle

Non‐isolated high step‐up / step‐down DC–DC quadratic Ćuk converter

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