A Novel Switched-Capacitor Converter With High Voltage Gain

Xie, Hongyang; Li, Rui

doi:10.1109/access.2019.2931562

Cited by 41 publications

(28 citation statements)

References 40 publications

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“…Another common method for increasing the output of TENGs is designing the external circuit. Owing to the advantages of easy integration and being magnet-free and lightweight, the switched capacitor convertor (SCC) plays an increasingly important role compared to the traditional transformer in some specific power supply systems [ 84 , 85 ]. Therefore, a power management system with higher transfer efficiency and multifunctional output mode is urgently needed and has great significance for practical applications of TENGs.…”

Section: Output Enhancement Strategies For Tengsmentioning

confidence: 99%

Triboelectric Nanogenerators and Hybridized Systems for Enabling Next-Generation IoT Applications

et al. 2021

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In the past few years, triboelectric nanogenerator-based (TENG-based) hybrid generators and systems have experienced a widespread and flourishing development, ranging among almost every aspect of our lives, e.g., from industry to consumer, outdoor to indoor, and wearable to implantable applications. Although TENG technology has been extensively investigated for mechanical energy harvesting, most developed TENGs still have limitations of small output current, unstable power generation, and low energy utilization rate of multisource energies. To harvest the ubiquitous/coexisted energy forms including mechanical, thermal, and solar energy simultaneously, a promising direction is to integrate TENG with other transducing mechanisms, e.g., electromagnetic generator, piezoelectric nanogenerator, pyroelectric nanogenerator, thermoelectric generator, and solar cell, forming the hybrid generator for synergetic single-source and multisource energy harvesting. The resultant TENG-based hybrid generators utilizing integrated transducing mechanisms are able to compensate for the shortcomings of each mechanism and overcome the above limitations, toward achieving a maximum, reliable, and stable output generation. Hence, in this review, we systematically introduce the key technologies of the TENG-based hybrid generators and hybridized systems, in the aspects of operation principles, structure designs, optimization strategies, power management, and system integration. The recent progress of TENG-based hybrid generators and hybridized systems for the outdoor, indoor, wearable, and implantable applications is also provided. Lastly, we discuss our perspectives on the future development trend of hybrid generators and hybridized systems in environmental monitoring, human activity sensation, human-machine interaction, smart home, healthcare, wearables, implants, robotics, Internet of things (IoT), and many other fields.

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Section: Output Enhancement Strategies For Tengsmentioning

confidence: 99%

Triboelectric Nanogenerators and Hybridized Systems for Enabling Next-Generation IoT Applications

et al. 2021

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“…This advantage could be achieved due to the fact that the high frequency of the magnetic field only requires a small size of winding [83]. In this small size transformer, there is no contact between the primary and secondary sides of the converter, thus the isolation strength of the transformer could be improved [84]. Based on Fig.…”

Section: ) High-frequency Transformermentioning

confidence: 99%

State of the Art of Solid-State Transformers: Advanced Topologies, Implementation Issues, Recent Progress and Improvements

et al. 2020

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Solid-state transformer (SST) is an emerging technology integrating with a transformer power electronics converters and control circuitry. This paper comprehensively reviews the SST topologies suitable for different voltage levels and with varied stages, their control operation, and different trends in applications. The paper discusses various SST configurations with their design and characteristics to convert the input to output under unipolar and bipolar operation. A comparison between the topologies, control operation and applications are included. Different control models and schemes are explained. Potential benefits of SST in many applications in terms of controllability and the synergy of AC and DC systems are highlighted to appreciate the importance of SST technologies. This review highlights many factors including existing issues and challenges and provides recommendations for the improvement of future SST configuration and development.

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“…When the proposed converter is extended to the configuration with n basic cells, the average current values of the switches, the inductors, and the diodes can be calculated by (14). where m [1, n].…”

Section: B Stress Analysis Of the Componentsmentioning

confidence: 99%

“…And some appropriate snubber circuits are needed to absorb the voltage spike caused by leakage inductor, which increases the complexity of the system. The high voltage gain converters with switched capacitor structures have some basic disadvantages such as complex driving circuit and many active switches [14]- [16]. In [17]- [19], some high voltage gain converters have been presented based on various voltage multipliers.…”

Section: Introductionmentioning

confidence: 99%