Theoretical simulation, design and manufacture, and experimental evaluation of a free piston Stirling engine electric generator

Bat, De La; Gérard, Jean

doi:10.2514/6.2018-4502

Cited by 5 publications

(4 citation statements)

References 5 publications

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“…(a) Crank and connecting rod, rotating generator, (b) free piston, (c) free piston linear generator; pressure–volume convergence [10–12, 43–53]. …”

Section: Principle Of Electricity Generation With Parabolic Collector...mentioning

confidence: 99%

“…The operation of the Stirling engine may be understood by considering its fixed volume and fixed heat states. The Stirling engine has four states (Figure 2): the process between states 3 and 4 occurs at fixed temperature when heat is drawn from the operating gas; the process between states 4 and 1 when giving heat to the operating gas from an external source; the process between states 1 and 2 occurs when the operating gas expands and moves the piston at fixed temperature; the process between states 2 and 3 process ends in conversion and the heat in fixed volumes should be removed from the operating gas [10–12, 22, 43–53].…”

Section: Principle Of Electricity Generation With Parabolic Collector...mentioning

confidence: 99%

“…Note that self‐inductance is high and mutual inductance is low. Output power can be increased by compensating inductance with a series capacitor [9–41].…”

Section: Linear Generator Design and Optimizationmentioning

confidence: 99%

“…Single-phase generator designs have mostly been considered for small power Stirling engine systems [14,15,39,40]. Different magnet array structures have been investigated for single-phase permanent magnet tube-type generators [40][41][42][43][44]. Power density has been increased by using the response surface method [44].…”

Section: Introductionmentioning

confidence: 99%

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Linear generator design for concentrating solar power technologies: Optimization and prototype development

Arslan,

Akkaya Oy

2023

IET Renewable Power Gen

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An alternative way to generate electricity from solar energy is through the use of generators comprising Stirling engines with a parabolic collector. This study describes a parabolic collector with Stirling engine and investigates the design of a linear mobile generator for these systems. Especially for direct drive in free piston mechanisms proposed for these systems, linear generators are important due to their advantages such as compact structure, light weight, high efficiency and high power intensity. Although conventional one‐phase and three‐phase multi slot/pole models are widely available in the literature, three phase is considered for lower PM cost and to reduce the cost of power electronics and 3/2 slot/pole combination is considered for high speed and frequency. In this study, a new 3/2 slot/pole three‐phase tube‐type linear generator was designed and evaluated for performance and manufacturability. Objective functions were defined for power and efficiency increase to reduce generator power ripple, and the results of Mixed‐Integer Sequential Quadratic Programming, Multi‐Objective Genetic Algorithm (MOGA), and Screening methods were compared and examined. Performance of the two‐dimensional and optimized models was evaluated in terms of induced voltage, power density, efficiency, and output power. The best results were found with MOGA compared to other methods. When compared with the initial value, there was a 97.3% increase in power density for a 32.4% increase in moving weight. Moreover, the efficiency of the MOGA model is improved by 16.2% compared with the initial model. Additionally, significant improvements were shown in terms of thrust coefficient, voltage coefficient, power, and no‐load voltage. A prototype of the model was made and a motor‐driven crank mechanism system was used in place of the Stirling engine to undertake practical measurements.

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“…(a) Crank and connecting rod, rotating generator, (b) free piston, (c) free piston linear generator; pressure–volume convergence [10–12, 43–53]. …”

Section: Principle Of Electricity Generation With Parabolic Collector...mentioning

confidence: 99%

Section: Principle Of Electricity Generation With Parabolic Collector...mentioning

confidence: 99%

“…Note that self‐inductance is high and mutual inductance is low. Output power can be increased by compensating inductance with a series capacitor [9–41].…”

Section: Linear Generator Design and Optimizationmentioning

confidence: 99%