Design considerations of a linear generator for a range extender application

Seo, Un-Jae; Riemer, Björn; Appunn, Rüdiger; Hameyer, Kay

doi:10.1515/aee-2015-0043

Cited by 5 publications

(3 citation statements)

References 13 publications

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“…The requirements of a linear electric generator resulting from a basic analysis of a linearly arranged internal combustion engine with a generator, all in terms of the output power achieved for charging the traction battery Q = 21 kWh and the electric drive P = 80 kW, are published in [43]. Other published articles or papers discuss, for instance, an approach that relies on deploying a linear generator to convert the mechanical vibrations of a car into electrical energy [44].…”

Section: State Of the Research Field And Topics Analyzedmentioning

confidence: 99%

A Robust Generator–Harvester for Independent Sensor Systems

Zukal,

Szabó,

Kříž

et al. 2024

Applied Sciences

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The research is centered on energy production and harvesting to facilitate the transformation of electrical energy with energy-independent sensor systems, using powering devices in the expected power range of P = 10–10,000 W. A model application case for a harvester is the conversion of energy stored in the compressed gas during expansion; such gas embodies the energy stored in scenarios such as braking a car using an auxiliary pump. Similar systems find use in sensing various quantities in the transport sector (bridge structures, infrastructural components, cars, and other objects). The proposed theoretical harvester models describing the transformation of linear motion energy into electricity provide relevant support for the experiments. In the given context, the results obtained in the designing and construction of a robust motion generator with a primarily linear geometry-based system technology are presented, too. The expected output of electrical power of an N-segment harvester within the tested type is variable, and the design exploits the rectilinear motion generated by an engine using compressed air, a small fuel system, and similar options to obtain an expected/adjustable N-segment power in the range of Psm = 10–500 W. The fundamental structure of the generator core has been continuously numerically modeled, and an experimental setup has been developed to analyze the specific parts and variations in order to validate the concept and to achieve the most suitable parameters with the selected construction materials (a power yield increase of up to 2000 times). A scaled-down version of the model principle was tested in the experiments, and the parameters and results were compared with the predicted theoretical analyses. Generally, the conceptual layout of an enhanced magnetic circuit layout transforming motion energy into electricity was presented and verified.

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Section: State Of the Research Field And Topics Analyzedmentioning

confidence: 99%

A Robust Generator–Harvester for Independent Sensor Systems

Zukal,

Szabó,

Kříž

et al. 2024

Applied Sciences

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“…Mechanical resonance is typically achieved through the use of tension and compression springs. It is also possible to use a gas filled bounce chamber if the applied mechanical force only acts in one direction [25]. Damping force depends on the load and the magnetic 3 of 12 field strength of the generator.…”

Section: Of 12mentioning

confidence: 99%

Design and Analysis of a Linear Electric Generator for Harvesting Vibration Energy

Then,

Agalgaonkar,

Safaei

et al. 2023

Preprint

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This paper provides a proof of concept for a linear electric generator that can be used to harvest energy from various sources of linear motion, such as vibrations, free-piston engines and wave energy. The generator can be used to power small electronic devices, such as sensors, or charge household batteries. Literature was reviewed to develop an understanding about the applications, control methods, excitation methods and mechanics of rotating and linear electric machines. A bidirectional, two-sided linear machine was designed with two stator cores and a single mover core. The stator windings and mover winding can be independently excited, allowing for three modes: no mover excitation, DC excited mover, and AC excited mover. Simulations results showed that the magnetic flux generated by DC excited stator cores were concentrated in the centre of the mover core. The use of two stator cores eliminates lateral flux in the mover core when it is not excited, minimising attraction and repulsion forces. Parametric analysis showed that flux cutting occurred in all operation modes, verifying that the generator will produce power when operating. Hardware tests produced an output current when the machine is electrically and mechanically excited, verifying the proposed design.

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“…Mechanical resonance is typically achieved through the use of tension and compression springs. It is also possible to use a gas-filled bounce chamber if the applied mechanical force only acts in one direction [27]. The damping force depends on the load and the magnetic field strength of the generator.…”

Section: Introduction 1backgroundmentioning

confidence: 99%

Design and Analysis of a Linear Electric Generator for Harvesting Vibration Energy

Then,

Agalgaonkar,

Safaei

et al. 2024

Energies

View full text Add to dashboard Cite

This paper provides a proof of concept for a linear electric generator that can be used to harvest energy from various sources of linear motion, such as vibrations, free-piston engines and wave energy. The generator can be used to power small electronic devices, such as sensors, or charge household batteries. The literature was reviewed to develop an understanding about the applications, control methods, excitation methods and mechanics of rotating and linear electric machines. A bidirectional, two-sided linear machine was designed with two stator cores and a single mover core. The stator windings and mover winding can be independently excited, allowing for three modes: no mover excitation, a DC excited mover, and an AC excited mover. Simulation results showed that the magnetic flux generated by DC excited stator cores were concentrated in the centre of the mover core. The use of two stator cores eliminates lateral flux in the mover core when it is not excited, minimising attraction and repulsion forces. Parametric analysis showed that flux cutting occurred in all operation modes, verifying that the generator will produce power when operating. Hardware tests produced an output current when the machine was electrically and mechanically excited, verifying the proposed design.

show abstract

Design considerations of a linear generator for a range extender application

Cited by 5 publications

References 13 publications

A Robust Generator–Harvester for Independent Sensor Systems

A Robust Generator–Harvester for Independent Sensor Systems

Design and Analysis of a Linear Electric Generator for Harvesting Vibration Energy

Design and Analysis of a Linear Electric Generator for Harvesting Vibration Energy

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