Dual-Source Energy-Harvesting Interface With Cycle-by-Cycle Source Tracking and Adaptive Peak-Inductor-Current Control

Liu, Chen‐Wuing; Lee, Hui-Hsuan; Liao, Po‐Yung; Chen, Yilun; Chung, Ming-Jie; Chen, Po-Hung

doi:10.1109/jssc.2018.2844358

Cited by 69 publications

(19 citation statements)

References 20 publications

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“…This work is compared with the state-of-the-art multiple source energy harvesting architectures, as tabulated in Table 2. Two of the MidB architectures [20,21] have distinct advantages over the PostB architecture [15] in terms of number of inductors and complexity, but they require external supports to start up. Other works [16,22] utilize batteries to operate.…”

Section: Resultsmentioning

confidence: 99%

“…In order to lower the number of components (e.g., inductors) and reduce the effects of redundancy and leakage losses, multiinput energy harvesters have been designed with a single inductor boost converter [16,17,[19][20][21][22]. Figure 1a shows a block diagram of a multiinput single inductor (MISI) energy harvesting architecture.…”

Section: Voutmentioning

confidence: 99%

“…one energy source is exploited over one switching cycle [16,17,19,21,22], or simultaneously, i.e. two energy sources can be utilized over one switching cycle [20] via switches. However, these switches require a supply power to turn on/off to create a bridge between the energy transducers and the converter to power the load.…”

Section: Voutmentioning

confidence: 99%

“…Due to the relatively low voltages generated at energy transducers' outputs [1,5,15,21,30], the output of these energy transducers is insufficient to turn switches M1-Mn on/off, as the threshold voltage of the standard CMOS technology is typically higher than the energy transducer output voltage. Therefore, in order to provide initial operation for a short time, M1-Mn switches in MISI architectures are powered by a battery [16,17,20,21].…”

Section: Loadmentioning

confidence: 99%

“…Thus, driving a WSN application through a power converter via a single energy source (e.g., PV) might not be an effective solution to best exploit the energy harvesting. For this reason, efforts to combine and utilize multiple energy sources are gaining popularity among energy harvesting researchers [12][13][14][15][16][17][18][19][20][21][22][23]. By combining multiple energy sources of the same or different types for flexibility, redundancy, or capacity [24], it is possible to improve system reliability [12, 16-19, 21, 23], achieve robustness against power failures [14,15], and increase the overall output power [12][13][14][15][16][17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A fully batteryless multiinput single inductor single output energy harvesting architecture

Umaz¹

2020

Turk J Elec Eng & Comp Sci

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Conventional energy architectures that utilize multiple ambient energy sources are initiated either by an external power supply or through the addition of an extra power source (e.g., battery) to the architecture. However, these interventions compromise the goal of a self-sustainable energy harvesting system. Moreover, conventional architectures are not effective in situations where space is limited (e.g., an artificial heart) or when access to this space is difficult (e.g., human implantable devices), due to their large battery size. Thus, conventional energy combiner circuits that use multiple energy sources are not well suited for supplying power to most applications. This paper presents a fully batteryless energy combiner architecture with a single inductor for the use of multiple ambient energy sources, including a solar cell and a microbial fuel cell. For each energy source, an auxiliary circuit (i.e. a charge pump) is implemented in order to provide a power supply to a digital control circuit, which consecutively connects each ambient energy source to a power converter. This novel architecture is completely self-starting and requires no additional extra power source or battery. This architecture has been designed and verified using a 0.13µ m CMOS process and a peak end-to-end efficiency of 79.33% for two ambient sources is achieved. This proposed system is applicable to numerous loads utilized in energy harvesting systems.

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