An AC-DC Wind Energy Harvesting Circuit with Extended Input-Voltage Range and 95% Tracking Efficiency

Hsieh, Jen-Chien; Tsai, Tsung-Heng

doi:10.1109/iscas.2018.8351754

Cited by 12 publications

(4 citation statements)

References 9 publications

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“…Another dual-stage rectifier circuit was proposed by [22]. The proposed controller varied the switching frequency, fs of the step-down converter circuit to maximise the output power flow into the battery.…”

Section: Introductionmentioning

confidence: 99%

Design and Application of a Self-Powered Dual-Stage Circuit for Piezoelectric Energy Harvesting Systems

et al. 2021

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This paper describes the design and practical application of a dual-stage H-Bridge (DSHBR) circuit to reduce the rectification losses and mitigate ripples in piezoelectric energy harvesting. The proposed DSHBR circuit integrates both AC-DC and DC-DC conversion processes using bidirectional switches and a step-up DC-DC converter, which applies to both positive and negative half cycles. One additional feature is that it does not require external power to turn on the bidirectional switches (Vth < 0.3 V). Such feature facilitates active rectification at very low AC voltages (Vac < 0.5) generated by the piezoelectric device (PD). To validate the performance of the proposed circuit, a series of experimental tests were conducted. Firstly, the performance of circuit on rectifying the PD output was investigated using a shaker to generate high and low frequency excitations. Next, real-life testing was conducted with human arm motion as the source of excitation. Then, the ability of the entire system to charge solar batteries was investigated. The outcome shows that the DSHBR circuit prominently increased the rectified voltage and the output power while stabilising the DC voltage when compared with the conventional H-Bridge circuit.

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Section: Introductionmentioning

confidence: 99%

Design and Application of a Self-Powered Dual-Stage Circuit for Piezoelectric Energy Harvesting Systems

et al. 2021

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“…Later, Hsieh et al [35] proposed a two-stage rectifier circuit to attain maximum output power at load. The proposed circuit comprised a maximum power extraction (MPE) circuit and a regulator for dual-stage circuit operations.…”

Section: Introductionmentioning

confidence: 99%

A Voltage Doubler Boost Converter Circuit for Piezoelectric Energy Harvesting Systems

Haseeb

Edla²,

Üçgül

et al. 2023

Energies

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This paper describes the detailed modelling of a vibration-based miniature piezoelectric device (PD) and the analysis modes of operation and control of a voltage doubler boost converter (VDBC) circuit to find the PD’s optimal operating conditions. The proposed VDBC circuit integrates a conventional voltage doubler (VD) circuit with a step-up DC-DC converter circuit in modes 1–4, while a non-linear synchronisation procedure of a conventional boost converter circuit is employed in modes 5–6. This integration acted as the voltage boost circuit without utilising duty cycles and complex auxiliary switching components. In addition, the circuit does not require external trigger signals to turn on the bidirectional switches. This facilitates the operation of VDBC circuit at very low AC voltage (Vac ≥ 0.5 V). Besides this, the electrical characteristics of VDBC circuit’s input (i.e., PD) perfectly concurs with the studied testing scenarios using impedance power sources (mechanical shaker). Firstly, the proposed circuit which can rectify the PD’s output was tested at both constant input voltage with varying excitation frequency and constant excitation frequency with varying input voltage. Next, a small-scale solar battery was charged to validate the feasibility of the performance of the proposed VDBC circuit. The proposed circuit achieved a maximum output voltage of 11.7 Vdc with an output power of 1.37 mW. In addition, the rectified voltage waveform is stable due to the sminimisation of the ripples. In addition, the performance of VDBC circuit was verified by comparing the achieved results with previously published circuits in the literature. The results show that the proposed VDBC circuit outperformed existing units as described in the literature regarding output voltage and power. The developed rectifier circuit is suitable for various real-life applications such as energy harvesting and battery charging.

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“…A dual-stage rectifier circuit was proposed by [20], where a controller varied the switching frequency (fs) of the step-down converter circuit to maximise the output power flowing into the battery. However, due to its switching frequency, the switching losses were higher than the output power.…”

Section: Introductionmentioning

confidence: 99%

Non-Linear Switching Circuit for Active Voltage Rectification and Ripples Reduction of Piezoelectric Energy Harvesters

et al. 2022

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This paper describes an improved non-linear switching circuit (INLSC) for active rectification of voltage and reduction of ripples in the voltage waveform for the piezoelectric energy harvesting (PEH) system. The proposed converter controls the alternating current (AC) generated by the piezoelectric device (PD) under mechanical vibration. The proposed circuit combines the boost and buck-boost processes through a switching process, which functions in both positive and negative cycles. In addition, it controls the voltage and frequency of the load capacitor. In this process, the passive components in the circuit are energised by being short with the AC voltage using switching signals, which facilitates the active rectification of ultra-low AC voltage. Design considerations, theoretical analysis, simulations and experimental results are presented. It was shown that the circuit was able to control the switching signal and to convert low AC voltage (0.44 Vi) to high direct current (DC) voltage (6.5 Vdc) while achieving an output power of 469 µW which outperforms the existing similar circuits and synchronous rectifier circuit. The ripples in the rectified voltage were also comparatively less. Application-wise, the proposed circuit could power a manually connected 7-segments display, commonly used for traffic applications.

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An AC-DC Wind Energy Harvesting Circuit with Extended Input-Voltage Range and 95% Tracking Efficiency

Cited by 12 publications

References 9 publications

Design and Application of a Self-Powered Dual-Stage Circuit for Piezoelectric Energy Harvesting Systems

Design and Application of a Self-Powered Dual-Stage Circuit for Piezoelectric Energy Harvesting Systems

A Voltage Doubler Boost Converter Circuit for Piezoelectric Energy Harvesting Systems

Non-Linear Switching Circuit for Active Voltage Rectification and Ripples Reduction of Piezoelectric Energy Harvesters

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