Power Conditioning for Energy Harvesting – Theoryand Architecture

Burrow, Steve G; Mitcheson, Paul D.

doi:10.1002/9783527672943.ch5

Cited by 3 publications

(4 citation statements)

References 15 publications

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“…Among electronic interface circuits for MEMS capacitive energy harvesters, 25,26 the charge pump circuit 6 and its varieties are widely investigated. A well-known charge pump variation that combines with an inductive flyback circuit was developed by Yen et al 8 An alternative technique to implement flyback is to use a load resistance, which was first introduced in Florentino et al 27 and thoroughly analyzed in O'Riordan et al 23 Comparing the results reported in the literature with those obtained in the first sections of this paper, it is worth noting that the Q-V cycle for the charge pump circuit with resistive flyback is very similar to that of Bennet's doubler circuit.…”

Section: Similarity Of Bennet's Doubler and Charge-pump Circuitmentioning

confidence: 99%

“…Among electronic interface circuits for MEMS capacitive energy harvesters, 25,26 the charge pump circuit 6 and its varieties are widely investigated. A well‐known charge pump variation that combines with an inductive flyback circuit was developed by Yen et al 8 An alternative technique to implement flyback is to use a load resistance, which was first introduced in Florentino et al 27 and thoroughly analyzed in O'Riordan et al 23 …”

Section: Steady‐state Operation With Mathematically Idealized Diodesmentioning

confidence: 99%

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Theoretical analysis of electrostatic energy harvester configured as Bennet's doubler based on Q‐V cycles

Truong

2023

Circuit Theory & Apps

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We present a theoretical analysis of a MEMS electrostatic energy harvester configured as Bennet's doubler. The steady-state operation of the circuit can be approximated by a rectangular Q-V cycle in the ideal case or by a trapezoid diagram when the electrical losses are taken into account. A similarity between the voltage doubler and charge-pump circuit is highlighted. The analytical solution of the saturation voltage is derived, providing a more insightful comprehension of the system performance and the influence of its parameters. The results obtained from studying the Q-V diagram coincide with those of circuit simulations for both cases when using (i) a mathematically idealized diode or (ii) a realistic diode model that includes the electrical losses. A configuration employing a simple switch connected in series with one of the three diodes that can further increase the saturation voltage is investigated, providing an efficient alternative for boosting the output voltage of an electrostatic energy harvester.

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Section: Similarity Of Bennet's Doubler and Charge-pump Circuitmentioning

confidence: 99%

Section: Steady‐state Operation With Mathematically Idealized Diodesmentioning

confidence: 99%

Theoretical analysis of electrostatic energy harvester configured as Bennet's doubler based on Q‐V cycles

Truong

2023

Circuit Theory & Apps

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“…Indeed, the total power amounts recovered in energy harvesting conversion mechanisms are typically low, even below mW, while output voltages can be far below 1 V [19][20][21]. Furthermore, the energy source for the EH (vibrations in this case) is typically quite random in nature, and therefore, the need for a custom PEI is often compulsory [22]. The latter aims to increase the harvested energy and the available voltage output [23], with a consequent efficiency improvement.…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of a Boost Interface for Magnetostrictive Energy Harvesting

et al. 2023

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Magnetostrictive alloys are very promising for Vibration Energy Harvesting applications to supply power to Wireless Sensor Network (WSN) and Internet of Things (IoT) devices, especially because of their intrinsic robustness. Typically, vibration energy sources are random in nature, usually providing exploitable voltages much lower than the electronic standards 1.6, 3.3 and 5 V. Therefore, a Power Electronic Interface (PEI) is needed to improve the conversion to DC output voltage from AC input over a wide range of frequencies and amplitudes. Very few or no conversion techniques are available for magnetostrictive devices, although several have been presented over the years for other smart materials, such as piezoelectrics. For example, hybrid buck–boost converters for piezoelectrics use one or more external inductors with a high-frequency switching technique. However, because of the intrinsic nature of harvesters based on magnetostrictive materials, such energy conversion techniques are proved to be neither efficient nor applicable. An improved AC–DC boost converter seems very promising for our purpose instead. The key feature is represented by the direct exploitation of the active harvester coil as a storage element of the boost circuit, without using other passive inductors as in other switching methods. Experimental tests of such a converter, driven with a real-time operating Arduino controller to detect the polarity of the input voltage, are presented with the aim to assess the potentiality of the scheme with both sinusoidal and impulse-like inputs. Simulations have been performed with LTspice, and the performance and efficiency have been compared with other energy conversion techniques.

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“…Today one can often meet complex solutions for power units that satisfy energy management in such way that all WSN energy requirements are compressed down to zero (zero power systems) [19]. Such unit consists of three main parts, Fig.…”

Section: A Power Unitmentioning

confidence: 99%

Control Unit for Power Subsystem of a Wireless Sensor Node

Kochláň

Zak

Micek

et al. 2015

Annals of Computer Science and Information Systems

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Abstract-This paper addresses analysis of the principle of a bi-directional electric energy charge pump and describes circuit solution for control unit of a wireless sensor node power subsystem. This power and control unit, as the power subsystem of the wireless node, comprises two supercapacitors. Bi-directional energy flow between these two supercapacitors takes place in order to optimally satisfy the sensor node energy requirements. At the same time, the bi-directional energy flow enables optimal energy harvesting from the selected energy scavenging (harvesting) subsystem. The mentioned Power Unit Control System has been successfully verified in the process of energy harvesting from a solar module.

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Power Conditioning for Energy Harvesting – Theoryand Architecture

Cited by 3 publications

References 15 publications

Theoretical analysis of electrostatic energy harvester configured as Bennet's doubler based on Q‐V cycles

Theoretical analysis of electrostatic energy harvester configured as Bennet's doubler based on Q‐V cycles

Design and Optimization of a Boost Interface for Magnetostrictive Energy Harvesting

Control Unit for Power Subsystem of a Wireless Sensor Node

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