A power management circuit with 50% efficiency and large load capacity for triboelectric nanogenerator

Bao, Dechun; Luo, Lichuan; Zhang, Zhaohua; Ren, Tian‐Ling

doi:10.1088/1674-4926/38/9/095001

Cited by 21 publications

(5 citation statements)

References 31 publications

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“…As we have discussed, overcoming the impedance mismatch is crucial, and several efforts have been made to develop power management circuits that can successfully lower or eliminate the impedance mismatch and therefore improve the overall charge storage efficiency. Table 3 shows the performance of SCPUs with various power management strategies based on switched capacitors, oscillating inductor‐capacitor (LC) circuits, high‐voltage diodes, rectification storage, and DC–DC management circuits, specially designed charge cycles, etc. While excellent energy transfer efficiencies on the order of up to 80% have been achieved, further research is still needed to ensure high efficiency.…”

Section: Self‐charging Power Units Based On Tengsmentioning

confidence: 99%

Integrated Triboelectric Nanogenerators in the Era of the Internet of Things

et al. 2019

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Since their debut in 2012, triboelectric nanogenerators (TENGs) have attained high performance in terms of both energy density and instantaneous conversion, reaching up to 500 W m −2 and 85%, respectively, synchronous with multiple energy sources and hybridized designs. Here, a comprehensive review of the design guidelines of TENGs, their performance, and their designs in the context of Internet of Things (IoT) applications is presented. The development stages of TENGs in large-scale self-powered systems and technological applications enabled by harvesting energy from water waves or wind energy sources are also reviewed. This self-powered capability is essential considering that IoT applications should be capable of operation anywhere and anytime, supported by a network of energy harvesting systems in arbitrary environments. In addition, this review paper investigates the development of self-charging power units (SCPUs), which can be realized by pairing TENGs with energy storage devices, such as batteries and capacitors. Consequently, different designs of power management circuits, supercapacitors, and batteries that can be integrated with TENG devices are also reviewed. Finally, the significant factors that need to be addressed when designing and optimizing TENG-based systems for energy harvesting and self-powered sensing applications are discussed. Integrated Self-Powered Systems

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Section: Self‐charging Power Units Based On Tengsmentioning

confidence: 99%

Integrated Triboelectric Nanogenerators in the Era of the Internet of Things

et al. 2019

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“…The abovementioned electrical characteristics cannot match the input requirements of stable DC power for conventional electronic devices. In order to reduce the voltage and impedance, and improve electrical energy supply efficiency, researchers have proposed many methods of switching power management for TENGs [40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58]. Figure 1 shows the progress of the power management methods from 2013 to 2021. the end of the review, we summarize the deficiencies and research challenges of switching power management and give brief prospects for the future development of TENG power management.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress of Switching Power Management for Triboelectric Nanogenerators

Zhou

Liu

Zeng

et al. 2022

Sensors

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Based on the coupling effect of contact electrification and electrostatic induction, the triboelectric nanogenerator (TENG) as an emerging energy technology can effectively harvest mechanical energy from the ambient environment. However, due to its inherent property of large impedance, the TENG shows high voltage, low current and limited output power, which cannot satisfy the stable power supply requirements of conventional electronics. As the interface unit between the TENG and load devices, the power management circuit can perform significant functions of voltage and impedance conversion for efficient energy supply and storage. Here, a review of the recent progress of switching power management for TENGs is introduced. Firstly, the fundamentals of the TENG are briefly introduced. Secondly, according to the switch types, the existing power management methods are summarized and divided into four categories: travel switch, voltage trigger switch, transistor switch of discrete components and integrated circuit switch. The switch structure and power management principle of each type are reviewed in detail. Finally, the advantages and drawbacks of various switching power management circuits for TENGs are systematically summarized, and the challenges and development of further research are prospected.

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“…Consequently, even when continuous mechanical energy is available, TENGs can only act as intermittent power sources [18] . Alternatively, power management circuits have been developed to modulate and store the output energy from the TENG [27][28][29][30][31][32][33] .…”

Section: Introductionmentioning

confidence: 99%

Direct current contact-mode triboelectric nanogenerators via systematic phase shifting

et al. 2020

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The intermittency and discontinuous nature of power generation in Triboelectric Nanogenerators (TENGs) are arguably their most significant drawback, despite the promise demonstrated in low-power electronics. Herein, we introduce a novel technology to overcome this issue, in which, built-in systematic phase shifting of multiple poles is used to design a pseudo direct-current TENG. Unlike previous attempts of constructing near direct-current TENGs that base on the segmentation of electrodes of a sliding mode TENG, this technology introduces a new method that depends on planned excitation of constituent TENG units at different time intervals to obtain the necessary phase shifts, achieved by their structural design that contains an asymmetric spatial arrangement. Therefore, the direct current generation for TENG, which was previously limited to the sliding mode TENG units, are expanded to contact-mode TENGs. The technology allows for continuous and smooth operation of the driven loads and paves the way for a new dawn in energy scavenging from mechanical sources. We use the distance-dependent electric field (DDEF) platform to design the systematic phase shifting technology, which is experimentally demonstrated via a freestanding mode TENG (FSTENG) based design, to power a number of prototype devices. The resultant power output of the TENG indicates a crest factor close to 1.1 at relatively low frequencies, the best reported values for TENGs with contact-mode basic units, to date. This 2 work provides a highly awaited solution to overcome the intermittency and sporadic nature of TENG outputs, thus, promoting the field towards powering next generation autonomous and mobile electronics.

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A power management circuit with 50% efficiency and large load capacity for triboelectric nanogenerator

Cited by 21 publications

References 31 publications

Integrated Triboelectric Nanogenerators in the Era of the Internet of Things

Integrated Triboelectric Nanogenerators in the Era of the Internet of Things

Recent Progress of Switching Power Management for Triboelectric Nanogenerators

Direct current contact-mode triboelectric nanogenerators via systematic phase shifting

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