An Investigation of Short Translator Linear Machines for Use in a Free Piston Engine

Baker, Nick; Korbekandi, Ramin Moeini; Wu, Dawei; Jalal, Aslan Sa.

doi:10.1109/iemdc.2019.8785125

Cited by 7 publications

(4 citation statements)

References 14 publications

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“…Another group addresses the harvester/generator drive issues, often in relation to combustion engine functions and parts [9][10][11][12]. Yet, another set comprises articles on motion generation, the drifting of the electromagnetic part of the generator [13,14], models [18][19][20], motion principles, and appropriate experiments [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37]. Further categories cover the following methods and processes, respectively: the linear motion of the power unit based on the hydraulic transfer of dynamic energy to the motion element within the linear generator configuration, the generator system (kinetic-to-electrical energy conversion) and the control, modeling, simulation, measurement, and evaluation of relevant model parameters.…”

Section: State Of the Research Field And Topics Analyzedmentioning

confidence: 99%

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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%

“…Furthermore, an interesting area lies in modeling specifically designed devices, as is presented in articles [24,25].…”

Section: Problems Relating To the Electromagnetic Component Of The De...mentioning

confidence: 99%

A Robust Generator–Harvester for Independent Sensor Systems

Zukal,

Szabó,

Kříž

et al. 2024

Applied Sciences

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“…The thermodynamic cycle is based on the work presented in [1][2][3]. This has previously been connected to various electric models [4,5]. In this paper, the generator behaviour when connected to a pure resistive load is obtained by electromagnetic finite element analysis and transferred to AMESim using a series of look up tables, as shown schematically in Fig.…”

Section: System Modelmentioning

confidence: 99%

“…Fig. 5(a) is a long translator variant with a 9kg moving mass, defined as the reference design and presented elsewhere [4]. Various results of the machine variants are shown in Fig.…”

Section: As Presented At 2021 Ieee Energy Conversion Congress and Exp...mentioning

confidence: 99%

Modelling and build of an integrated linear engine generator designed for power density

Korbekandi¹,

Baker²,

Kulan³

et al. 2021

2021 IEEE Energy Conversion Congress and Exposition (ECCE)

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One possibility for onboard electricity generation in a hybrid vehicle is a free piston engine incorporating an integrated linear generator. This paper presents the modelling and development of the linear engine generator concept, where a linear electrical machine is physically integrated within a free piston engine. Details and results of a multi-physics simulation of this concept are given, with a focus on the design of the electric machine. It is shown that a short translator design can result in the highest power density. This also gives the opportunity for integrating the electric machine physically within the compressor. Details of a prototype demonstrator of the resulting generator-compressor are given.

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