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Research Papers

Design and Structural Analysis of the Sun Ray Double Axis Tracking Device

[+] Author and Article Information
Shanwen Zhang

College of Mechanical Engineering,
Yangzhou University,
Yangzhou, 225127, China
e-mails: swzhang@yzu.edu.cn;
zhangshanwen123@163.com

Chong Li

College of Mechanical Engineering,
Yangzhou University,
Yangzhou, 225127, China
e-mail: Licyzu0905@163.com

Jianfeng Zhang

College of Mechanical Engineering,
Yangzhou University,
Yangzhou, 225127, China
e-mail: zhangjf@yzu.edu.cn

Hong Miao

College of Mechanical Engineering,
Yangzhou University,
Yangzhou, 225127, China
e-mail: mh0514@163.com

Yanjun Zhang

College of Mechanical Engineering,
Yangzhou University,
Yangzhou, 225127, China
e-mail: zhangyj_204@163.com

1Corresponding author.

Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received March 30, 2018; final manuscript received December 7, 2018; published online January 8, 2019. Assoc. Editor: Gerardo Diaz.

J. Sol. Energy Eng 141(4), 041001 (Jan 08, 2019) (7 pages) Paper No: SOL-18-1146; doi: 10.1115/1.4042314 History: Received March 30, 2018; Revised December 07, 2018

To improve the solar energy utilization in the photovoltaic power, the sun ray double axis tracking device is designed and its tracking method is introduced. Using the finite element method, the parameterized analysis model is built and the static calculation is performed in different conditions for the device. The design feasibility of the device is verified by evaluating the stress. The lightweight of the device is made on the premise that the design satisfies the intensity and this provides the basis for manufacturing the prototype. The sun's rays tracing experiment is carried out by the prototype. Results show that the device design is reasonable and meets the design requirements; the key working conditions for the solar tracking design are found; the lightweight is obvious and the weight is reduced by 14%; the average errors of azimuth angle and height angle are within 5 deg; compared with the fixed device, the increasing proportion of solar energy one day is up to 52.6%; and the device works steadily and has good mechanical properties.

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Figures

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Fig. 1

Hardware components of tracking system

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Fig. 2

The photoelectric detection unit

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Fig. 3

The sun ray double axis tracking device

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Fig. 4

The finite element model of the device

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Fig. 5

Loads and constraint for conditions 1 and 2

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Fig. 6

Loads and constraint for conditions 3 and 4

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Fig. 7

Displacement and stress of the device in condition 1

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Fig. 8

Displacement and stress of the device in condition 2

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Fig. 9

Displacement and stress of the device in condition 3

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Fig. 10

Displacement and stress of the device in condition 4

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Fig. 11

The relationship between the design variables, objective function M, and the iterations

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Fig. 12

The prototype of the tracking device

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Fig. 13

Error curves of azimuth and altitude angle

Tables

Errata

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