An inertial coupled marine power generator for small boats

Sharkh, Suleiman M.; Hendijanizadeh, M.; Moshrefi-Torbati, M.; Russell, Matthew

doi:10.1109/iccep.2011.6036338

Cited by 2 publications

(4 citation statements)

References 9 publications

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“…However, due to the limitation of geometry and limited permissible deformation of electrostatic and piezoelectric transducers, the electromagnetic induction method is the more appropriate choice for large scale applications [9]. Movement of a backpack carried by a human during walking [10], all-terrain-vehicle vibration [11], vertical movement of a sailing boat [12] are some examples of relatively large scale vibration resource. However, in addition to the configuration of energy conversion device, maximizing the output power and efficiency are the main concerns in the process of design and optimization of vibration energy harvesters.…”

Section: Introductionmentioning

confidence: 99%

“…However, due to limitation of geometry and limited permissible deformation of electrostatic and piezoelectric transducers, the electromagnetic induction method is the more appropriate choice for large scale applications [9]. Movement of a backpack carried by a human during walking [10], all-terrain-vehicle vibration [11], vertical movement of a sailing boat [12] are some examples of relatively large scale vibration resource.…”

Section: Introductionmentioning

confidence: 99%

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Output power and efficiency of electromagnetic energy harvesting systems with constrained range of motion

Hendijanizadeh¹,

Sharkh²,

Elliott³

et al. 2013

Smart Mater. Struct.

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Abstract. In some energy harvesting systems, the maximum displacement of the seismic mass is limited due to the physical constraints of the device. This is especially the case where energy is harvested from a vibration source with large oscillation amplitude (e.g., marine environment). For the design of inertial systems, the maximum permissible displacement of the mass is a limiting condition. In this paper the maximum output power and the corresponding efficiency of linear and rotational electromagnetic energy harvesting systems with a constrained range of motion are investigated. A unified form of output power and efficiency is presented to compare the performance of constrained linear and rotational systems. It is found that rotational energy harvesting systems have a greater capability in transferring energy to the load resistance than linear directly coupled systems, due to the presence of an extra design variable viz. the ball screw lead. Also, in this paper it is shown that for a defined environmental condition and a given proof mass with constrained throw, the amount of power delivered to the electrical load by a rotational system can be higher than the amount delivered by a linear system. The criterion that guarantees this favorable design has been obtained.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Output power and efficiency of electromagnetic energy harvesting systems with constrained range of motion

Hendijanizadeh¹,

Sharkh²,

Elliott³

et al. 2013

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…Compared to a linear generator, a rotary generator is dimensionally smaller and more cost-effective. Therefore, in some energy harvesting systems, an intermediate mechanism is utilized to convert a linear low frequency motion to a high frequency rotational motion to reduce the size and cost of the device (Hendijanizadeh et al, 2013a;Sharkh et al, 2011;Cassidy et al, 2011). The intermediate part, for instance a lead screw, provides an additional design parameter to the existing ones and hence improve the efficiency of system in "constrained applications".…”

Section: Introductionmentioning

confidence: 99%

“…This type of device is particularly suitable for high frequency-low amplitude excitations and not so efficient for the other extreme case of low frequency-high amplitude environment (Hendijanizadeh et al, 2013a). However, in some applications such as harvesting energy from Extending the dynamic range of an energy harvester with a variable load resistance 2 boat vertical motion (Sharkh et al, 2011) or tall building vibrations (Cassidy et al,2011;Mariana and Giaralis, 2015), the frequency of vibration and hence the relative speed of the proof mass is low. Therefore, a direct drive generator can be quite large and expensive relative to the amount of power it produces, i.e.…”

Section: Introductionmentioning

confidence: 99%

Extending the dynamic range of an energy harvester with a variable load resistance

Hendijanizadeh

Elliott

Tehrani

2017

Journal of Intelligent Material Systems and Structures

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Abstract. In some energy harvesters, the maximum throw of the seismic mass is limited due to the physical constraints of the device. The shunt load resistance of such a harvester is generally selected based on the allowable throw of the mass when the device is subjected to the maximum level of excitation. However, the energy harvester with this value of shunt resistance does not perform well at lower levels of excitation. In this paper, a variable load resistance, scheduled on the excitation level, is introduced to extend the dynamic range of an energy harvester in applications where excitation level varies. This method is applied to the design of an energy harvester, which comprises of a sprung-mass coupled to an electric motor through a lead screw. The dynamic equation and parameters of the system are introduced and the device is experimentally characterized, by conduction the random vibration test. The harvested power and the relative displacement are then obtained for different sinusoidal base excitation amplitudes when the system is excited at the frequency close to its natural frequency. It is demonstrated that the use of a variable load resistance mechanism can significantly improve the dynamic range and output power of the energy harvester.

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An inertial coupled marine power generator for small boats

Cited by 2 publications

References 9 publications

Output power and efficiency of electromagnetic energy harvesting systems with constrained range of motion

Output power and efficiency of electromagnetic energy harvesting systems with constrained range of motion

Extending the dynamic range of an energy harvester with a variable load resistance

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