Journal
ENERGY
Volume 60, Issue -, Pages 401-406Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2013.07.058
Keywords
Photovoltaic panel; Cleaning; Piezoelectric actuator; Energy gain
Categories
Funding
- Nanjing University of Aeronautics and Astronautics [56YAH12015, 56XZA12044, S0896-013, 1001-909386]
- Innovation and Entrepreneurship Program of Jiangsu
- National Science Foundation of China [51075212, 91123020]
- 111 project
- PAPD
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A linear piezoelectric actuator based solar panel cleaning system is proposed in order to make a solar panel operate at the best power generation state while the solar panel is used in dusty environment. A piezoelectric actuator linearly moving on a guide is employed to drive a wiper fixed on the actuator. At a proper pressure force between the wiper and solar panel, the actuator can drive the wiper to effectively wipe a dust layer away from the solar panel's surface. The cleaning system's energy gain, which is defined as the ratio of a solar panel's output electric energy increase caused by cleaning to the energy consumption by the piezoelectric actuator, is much higher than 1. The merits of using the piezoelectric actuator in a solar panel cleaning system is that the cleaning system has light weight and compact structure, which is a common feature of piezoelectric systems. (C) 2013 Elsevier Ltd. All rights reserved.
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