An efficient self-powered synchronous electric charge extraction interface circuit for piezoelectric energy harvesting systems

Shi, Ge; Xia, Yinshui; Ye, Yidie; Qian, Libo; Li, Qing

doi:10.1177/1045389x15624796

Cited by 48 publications

(33 citation statements)

References 34 publications

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“…The piezoelectric harvester is fixed on the shaker, and its speed, displacement, and voltage waveforms are recorded for any couple of parameters ( , ). A N-SECE interface circuit made of off-the-shelf discrete components has been realized in order to FoM N-SECE (this paper) Standard interface (SEH) [2] SECE [4][5][6][7] Tunable SECE [9][10] Phase-shift SECE [16] Our PEH ( The highly coupled PEH is composed of two 10×5×0.5 mm 3 single crystal PZN-PT plates deposited on a cantilever beam. This PEH characteristics are summarized in Table 2.…”

Section: Resultsmentioning

confidence: 99%

“…These results clearly prove that an adequate tuning of leads to important power harvesting enhancement compared to the standard SECE (black crosses in Figure 21). Practical implementation of the N-SECE is similar to previous implementations of the SECE strategy which has been successfully realized using on-the-shelf components [5] or with a dedicated ASIC with external passive components [6,23]. A way to control the frequency of the energy extraction events is however required.…”

Section: Resultsmentioning

confidence: 99%

“…Indeed, they propose simple, efficient, and load independent ways to harvest the energy from lowly coupled and/or highly damped PEH. These strategies have either be implemented using on-the-shelf components [5], or developing dedicated ASIC with external passive components [6].…”

Section: Introductionmentioning

confidence: 99%

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A unified N-SECE strategy for highly coupled piezoelectric energy scavengers

Morel¹,

Badel²,

Wanderoild³

et al. 2018

Smart Mater. Struct.

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This paper proposes a novel vibration energy harvesting strategy based on an extension of the Synchronous Electric Charge Extraction (SECE) approach, enabling both the maximization of the harvested power and a consequent bandwidth enlargement in the case of highly coupled/lightly damped piezoelectric energy harvesters. The proposed strategy relies on the tuning of the frequency of the energy extraction events, which is either times greater than the vibration frequency (Multiple SECE case, > 1) or 1/ times smaller (Regenerative SECE, < 1). We first prove analytically than increasing or decreasing both lead to a damping reduction. While has no impact on the system's resonance frequency in the Regenerative case ( < 1), we show that this resonant frequency becomes a function of in the Multiple SECE case ( > 1). Experimental results on a highly coupled/lowly damped piezoelectric harvester ( ( = 0.44, / = 20) demonstrates the potential of this strategy, leading to 257% harvested power improvement compared to SECE ( = 1). and the possibility to tune the resonant frequency on a range as large as 35% of the short-circuit resonant frequency of the harvester.Thanks to recent progresses in the mechanical design and the use of highly coupled piezoelectric materials, e.g. single crystal, piezoelectric harvesters may now exhibit much higher electromechanical coupling associated with low mechanical damping. For this particular kind of PEH, SECE strategy is not well adapted since it overdamps the mechanical resonator, leading to low displacements and harvested energy [7,8].Some research has been conducted to investigate new efficient strategies that could be used for highly coupled PEH, in order to optimize the damping induced by the electrical interface [8][9][10]. Indeed, in [8], we proposed to wait a certain number of semi-period before harvesting the accumulated energy in order to reduce the damping induced by the electrical interface. In [9] and [10], the damping is reduced thanks to the control of the number of electrical charges extracted from the piezoelectric material. Those two approaches, even though they allowed to reduce the damping, did not induce any frequency tuning effect which could although be used to enlarge the harvesting bandwidth.Electrically-based frequency tuning strategies have also been proposed in the literature [11][12][13][14][15]. In [11], a capacitive bank combined with a variable resistive load emulated thanks to a DC/DC converter allows to tune the phase of the piezoelectric voltage while optimizing the damping induced by the interface. However, this approach requires an important number of passive components. In order to overcome this issue, in [12], we proposed to replace the capacitive bank with a short-circuit control which emulates a tunable capacitive behavior.[13] and [14-15] proposed a new frequency tuning approach based on the combination of the tunable SECE explained in [9] and [10] with a phase tuning. This approach is theoretically very efficient, however it introduces two tuning para...

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

A unified N-SECE strategy for highly coupled piezoelectric energy scavengers

Morel¹,

Badel²,

Wanderoild³

et al. 2018

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…A system implementing this extraction strategy is depicted in Fig.1, and an example of the voltage waveform is shown in Fig.2. As expressed by (2), v C is not sinusoidal. Only the first harmonic of v C is considered in order to analytically solve (1) while simplifying the calculations.…”

Section: B Expression Of the Piezoelectric Voltagementioning

confidence: 99%

“…The piezoelectric harvester is either working in open or short-circuit, as illustrated in Fig.2. Thus, the piezoelectric voltage during a single vibration period is given by (2).…”

Section: B Expression Of the Piezoelectric Voltagementioning

confidence: 99%

Short Circuit Synchronous Electric Charge Extraction (SC-SECE) Strategy for Wideband Vibration Energy Harvesting

Morel

Gasnier

Wanderoild

et al. 2018

2018 IEEE International Symposium on Circuits and Systems (ISCAS)

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In this paper, we present a new harvesting interface, called Short Circuit Synchronous Electric Charge Extraction (SC-SECE). The SC-SECE strategy includes a tunable short-circuit time thanks to two tuning parameters, and . stands for the phase between the mechanical displacement extrema and the energy harvesting event., stands for the angular time spent in the short-circuit phase. The theoretical analysis and modelling of this short-circuit influences are derived in this paper. When associated with highly coupled harvesters, it is shown that both the harvested power and bandwidth are greatly improved. These results have been numerically validated and they demonstrate the potential of this strategy for extending the bandwidth of piezoelectric vibration energy harvesters.

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A multisource energy harvesting circuit for vibration and light energy with MPPT

Zhu,

Wang,

Qian

2024

Circuit Theory & Apps

Self Cite

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SummaryThe article presents a multisource energy harvesting circuit (MEHC) for vibration and light energy with maximum power point tracking (MPPT). The MEHC has a cold start capability and extracts energy from piezoelectric transducers (PZTs) and photovoltaic cells (PVs) simultaneously when the multi PZTs reach their peak open‐circuit (OC) voltage, detected by the peak voltage detector and the PV1 cell voltage exceeds the MPP voltage (MPP voltage is approximately 0.7 times the PV cell's OC voltage) during the off‐peak time of the PZTs. The experimental results indicate that the output power of the MEHC is 2.8 mW under certain conditions, and the maximum energy extraction efficiency of the PVs is about 75%. The output power of the MEHC is 4.59 times of that without PVs.

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An efficient self-powered synchronous electric charge extraction interface circuit for piezoelectric energy harvesting systems

Cited by 48 publications

References 34 publications

A unified N-SECE strategy for highly coupled piezoelectric energy scavengers

A unified N-SECE strategy for highly coupled piezoelectric energy scavengers

Short Circuit Synchronous Electric Charge Extraction (SC-SECE) Strategy for Wideband Vibration Energy Harvesting

A multisource energy harvesting circuit for vibration and light energy with MPPT

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