A two-stage power converter architecture with maximum power extraction for low-power energy sources
A two-stage power converter architecture with maximum power extraction for low-power energy sources
A two-stage power converter with maximum power extraction for energy harvesting is presented. The powerconverter consists of two stages; a maximum power extraction stage (i.e. first stage) and a regulation stage (i.e. secondstage). The first stage consists of a number of charge pumps connected in parallel to extract power from the energy sourcewhile the second stage steps up low input voltage level to a usable level for a load. Proposed converter operates as low as0.3 V and the output up-converts to 3.3 V. The proposed converter is aimed to extract maximum power from either lowpower energy sources or high-power energy sources without increasing the complexity of the converter. Measured resultsindicate that the tracking efficiency is enhanced by 117%–123% over a single charge pump in the first stage converter.Proposed power converter provides 66.7% more power extracted from the energy source than the single charge pumpone. The end-to-end efficiency is enhanced by 1.67X as compared to the single charge pump implementation.
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- [1] Huang G, Umaz R, Karra U, Li B, Wang L. A biomass-based marine sediment energy harvesting system. In:
International Symposium on Low Power Electronics and Design (ISLPED); Beijing, China; 2013. pp. 359-364.
- [2] Karra U, Muto E, Umaz R, Kolln M, Santoro C et al. Performance evaluation of activated carbon-based electrodes
with novel power management system for long-term benthic microbial fuel cells. International Journal of Hydrogen
Energy 2014; 39(36): 21847-21856.
- [3] Chew KWR, Sun Z, Tang H, Siek L. A 400 nW single-inductor dual-input-tri-output dc-dc buck-boost converter
with maximum power point tracking for indoor photovoltaic energy harvesting. In: IEEE International Solid-State
Circuits Conference Digest of Technical Papers; San Francisco, USA; 2013. pp. 68-69.
- [4] Das A, Gao Y, Kim TTH. A 220-mv power-on-reset based self-starter with 2-nW quiescent power for thermoelectric
energy harvesting systems. IEEE Transactions on Circuits and Systems I: Regular Papers 2017; 64(1): 217-226.
- [5] Dini M, Romani A, Filippi M, Tartagni M. A nanocurrent power management ic for low-voltage energy harvesting
sources. IEEE Transactions on Power Electronics 2016; 31(6): 4292-4304.
- [6] Mansano A, Bagga S, Serdijn W. A high efficiency orthogonally switching passive charge pump rectifier for energy
harvesters. IEEE Transactions on Circuits and Systems I: Regular Papers 2013; 60(7): 1959-1966.
- [7] Umaz R, Garrett C, Qian F, Li B, Wang L. A power management system for multianode benthic microbial fuel
cells. IEEE Transactions on Power Electronics 2017; 32(5): 3562-3570.
- [8] Qiu Y, Van Liempd C, het Veld BO, Blanken PG, Van Hoof C. 5µW-to-10mW input power range inductive
boost
converter for indoor photovoltaic energy harvesting with integrated maximum power point tracking algorithm. In:
IEEE International Solid-State Circuits Conference; San Francisco, USA; 2011. pp. 118-120.
- [9] Huang G, Umaz R, Karra U, Li B, Wang L. A power management integrated system for biomass-based marine
sediment energy harvesting. International Journal of High Speed Electronics and Systems 2014; 23: 1450012 (1-20).
- [10] Umaz R, Wang L. Design of an inductorless power converter with maximizing power extraction for energy
harvesting.
International Journal of High Speed Electronics and Systems 2018; 27(01n02): 1840007.
- [11] Carreon-Bautista S, Erbay C, Han A, Sanchez-Sinencio E. An inductorless dc-dc converter for an energy aware
power management unit aimed at microbial fuel cell arrays. IEEE Journal of Emerging and Selected Topics in
Power Electronics 2015; 3(4): 1109-1121.
- [12] Shih YC, Otis BP. An inductorless dc-dc converter for energy harvesting with a 1.2- µw bandgap-referenced output
controller. IEEE Transactions on Circuits and Systems II: Express Briefs 2011; 58(12): 832-836.
- [13] Umaz R, Wang L. An energy combiner design for multiple microbial energy harvesting sources. In: Proceedings of
the on Great Lakes Symposium on VLSI; Alberta, CA; 2017. pp. 443-446.
- [14] Tanzawa T, Tanaka T. A dynamic analysis of the dickson charge pump circuit. IEEE Journal of Solid-State Circuits
1997; 32(8): 1231-1240.
- [15] Dickson JF. On-chip high-voltage generation in mnos integrated circuits using an improved voltage multiplier
technique. IEEE Journal of Solid-State Circuits 1976; 11(3): 374-378.
- [16] Seiko Instruments Inc. Ultra low voltage operation charge pump IC for step UP DC-DC converter startup.
S882Z
Datasheet 2010.
- [17] Meehan A, Gao H, Lewandowski Z. Energy harvesting with microbial fuel cell and power management system.
IEEE Transactions on Power Electronics 2011; 26(1): 176-181.
- [18] STMicroelectronics. Synchronous rectifier step up converter. L6920DB Datasheet Oct. 2006.
- [19] Yang F, Zhang D, Shimotori T, Wang K, Huang Y. Study of transformer-based power management system and its
performance optimization for microbial fuel cells. Journal of Power Sources 2012; 205: 86-92.