TY - GEN
T1 - Self-powered 30µW-to-10mW Piezoelectric energy-harvesting system with 9.09ms/V maximum power point tracking time
AU - Shim, Minseob
AU - Kim, Jungmoon
AU - Jung, Junwon
AU - Kim, Chulwoo
PY - 2014
Y1 - 2014
N2 - Energy harvesting is a key technology in various small-size applications such as wireless sensor nodes, mobile devices, and implantable bio-devices to improve battery lifetime or to substitute for batteries. Piezoelectric (PE) transducers are popular energy harvesters that can be used to supply AC power at the μW to mW scale to electronic devices using ambient vibrational energy. To use PE energy effectively, the harvesting systems need a highly efficient AC-DC converter and a DC-DC converter with maximum power point tracking (MPPT). However, existing sub-mW converters do not include an integrated MPPT algorithm [1, 2] or use the perturb and observe MPPT method which has long tracking time [3, 4]. This long tracking time reduces the power extraction from the transducer because the maximum power point (MPP) of the input power can be changed frequently according to the environment. In this paper, a low-power harvesting system is presented that finds the MPP of the input power in one cycle of the vibration of the PE transducer.
AB - Energy harvesting is a key technology in various small-size applications such as wireless sensor nodes, mobile devices, and implantable bio-devices to improve battery lifetime or to substitute for batteries. Piezoelectric (PE) transducers are popular energy harvesters that can be used to supply AC power at the μW to mW scale to electronic devices using ambient vibrational energy. To use PE energy effectively, the harvesting systems need a highly efficient AC-DC converter and a DC-DC converter with maximum power point tracking (MPPT). However, existing sub-mW converters do not include an integrated MPPT algorithm [1, 2] or use the perturb and observe MPPT method which has long tracking time [3, 4]. This long tracking time reduces the power extraction from the transducer because the maximum power point (MPP) of the input power can be changed frequently according to the environment. In this paper, a low-power harvesting system is presented that finds the MPP of the input power in one cycle of the vibration of the PE transducer.
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U2 - 10.1109/ISSCC.2014.6757490
DO - 10.1109/ISSCC.2014.6757490
M3 - Conference contribution
AN - SCOPUS:84898059804
SN - 9781479909186
T3 - Digest of Technical Papers - IEEE International Solid-State Circuits Conference
SP - 406
EP - 407
BT - 2014 IEEE International Solid-State Circuits Conference, ISSCC 2014 - Digest of Technical Papers
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 61st IEEE International Solid-State Circuits Conference, ISSCC 2014
Y2 - 9 February 2014 through 13 February 2014
ER -