Aerodynamic Effects of Manufacturing Tolerances on a Solar Car

Betancur, Esteban; Fragassa, Cristiano; Coy, Jairo; Hincapie, Sebastian; Osorio-Gómez, Gilberto

doi:10.1007/978-3-319-57078-5_81

Cited by 12 publications

(7 citation statements)

References 11 publications

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“…In this competitive segment, in fact, the approach to the energy efficiency is not limited to single developments, but involves an overall strategy [16][17][18].…”

Section: Discussionmentioning

confidence: 99%

Voltage control of a generator for a hybrid vehicle prototype

Henriques¹,

Ribeiro²,

Jorge³

2017

FME Transaction

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“…In this competitive segment, in fact, the approach to the energy efficiency is not limited to single developments, but involves an overall strategy [16][17][18].…”

Section: Discussionmentioning

confidence: 99%

Voltage control of a generator for a hybrid vehicle prototype

Henriques¹,

Ribeiro²,

Jorge³

2017

FME Transaction

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“…Some are related to the structural constraints of automobiles and require new design considerations. Many advances have been made, such as the development of lightweight, robust, flexible, and curved surfaces for both the car body and VIPV 31–55 . Recently, Toyota Motors developed a lightweight plastic‐covered VIPV exhibiting sufficient strength to serve as the exterior of the car 56 …”

Section: Introductionmentioning

confidence: 99%

Curve correction of vehicle‐integrated photovoltaics using statistics on commercial car bodies

Ota

Araki

Nagaoka

et al. 2021

Progress in Photovoltaics

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Typically, car roofs are curved, which means that vehicle‐integrated photovoltaics (VIPVs) are also curved along the roof surface. The performance of the PV module is influenced by the local cosine loss and self‐shadowing loss due to the curved surface. The ratio between the solar irradiances of curved and flat surfaces is defined as the curve correction factor, and it widely varies with the shape of the curved surface. When the curve correction factor is less than unity, the PV on a curved car roof performs worse than the PV on a flat plate. Understanding the typical range of the curve correction factor is important for the estimation of the energy generated by VIPV. We investigated the curved shapes of 100 lines of cars and 200 cases. The curved shapes were then used to extract eight nondimensional geometric parameters, and the distributions and correlations among the parameters were investigated. The parent population of the curved surfaces was estimated via a Monte Carlo simulation based on an analysis of the statistical characteristics. The distribution of curve correction factors for the car population was calculated via differential geometry weighted by the distribution of incident angles of sunlight (direct and diffused) affected by shading along the streets, which was obtained from 1 year of driving data for Miyazaki City, Japan. The curve correction factors were highly skewed, but the average value was 0.92. This means that VIPV requires a 10% boost in performance to compensate for the inherent loss due to the geometry of curved roofs.

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“…Solar cars are electric vehicles where the energy for powertrain is provided by the Sun thanks to the installation of photovoltaic panels (usually on the roof) and a battery pack for energy storage. Thus, energy efficiency definitely represents the key concept driving each design choice in the case of solar prototypes [6]: aerodynamics [7], dynamics [8], kinematics [9] and even manufacturing [10].…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Design Optimization of the Reinforced Composite Roof in a Solar Vehicle

et al. 2020

Self Cite

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A multi-step and -objective design approach was used to optimize the photovoltaic roof in a multi-occupant racing vehicle. It permitted to select the best combination of design features (as shapes, widths, angles) in composite structures simultaneously balancing opposite requirements as static strength and dynamic stiffness. An attention to functional requirements, as weight, solar cells cooling and solar energy conversion, was also essential. Alternative carbon fiber-reinforced plastic structures were investigated by finite elements using static and modal analyses in the way to compare several design configurations in terms of natural frequencies, deformations, flexural stiffness, torsional stiffness, and heat exchange surfaces. A representative roof section was manufactured and tested for model validation. A significant improvement respect to the pre-existing solar roof was detected. The final configuration was manufactured and installed on the vehicle.

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Aerodynamic Effects of Manufacturing Tolerances on a Solar Car

Cited by 12 publications

References 11 publications

Voltage control of a generator for a hybrid vehicle prototype

Voltage control of a generator for a hybrid vehicle prototype

Curve correction of vehicle‐integrated photovoltaics using statistics on commercial car bodies

Multi-Objective Design Optimization of the Reinforced Composite Roof in a Solar Vehicle

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