Abstract
Long-distance wireless power transmission can reduce the dependence of unmanned systems on energy storage systems, which is especially advantageous for unmanned aerial vehicles. This approach is key for building an integrated and uninterrupted air-to-ground power supply network. This paper introduces the technical characteristics of long-distance wireless power transmission systems, reports the development of such systems at home and abroad, and proposes technical indices and methods for performance evaluation of these systems. A test was conducted using a testing device, and the key parameters of the system performance were obtained. This work provides a solid foundation for the performance evaluation studies of long-distance wireless power transmission systems.
Highlights
Wireless power transmission technology refers to a brand-new mode of power supply, whereby power can be transmitted without cables
3.1 Methods for testing the laser wireless power transmission systems 3.1.1 Testing index Technical indexing can be divided into transmitter, space transmission, and receiver indices, according to the system composition, and it can be divided into size, power, and efficiency indexing, according to the index type
4.1 Testing examples and analysis of laser wireless power transmission systems According to the test conditions in Table 1, both the laser performance and the system performance were tested
Summary
Wireless power transmission technology refers to a brand-new mode of power supply, whereby power can be transmitted without cables. Using lasers and microwaves as vectors, long-distance wireless power transmission technology can be applied to terrestrial power distribution systems, space energy utilization, unmanned networking, and unmanned clusters. This paper mainly analyzes the technical characteristics of laser wireless power transmission and microwave wireless power transmission systems, and proposes two types of methods for testing the performance of such wireless power transmission systems. Compared with the existing methods, our methods has the following advantages: (1) The components and systems are tested respectively, and the size, power and efficiency evaluation indexes are put forward; (2) According to the evaluation index, the specific measuring point position, testing instrument and testing process are put forward; (3) The wireless energy transmission system has greater power and longer transmission distance, which has more practical reference significance.
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