Application of photovoltaic power generation in communications and aviation

Independent photovoltaic power stations have been widely used. Because of its unique advantages such as simple installation and operation, energy saving and environmental protection, it has been valued. Below we will talk about the application of photovoltaic power generation in communications and aviation

① Application of photovoltaic power generation in communication
The most mature application of solar photovoltaic power system in the industrial field is reflected in the field of communication. Solar power generation is used in unattended microwave relay stations, optical cable maintenance stations, electric power/broadcasting/communication/paging power systems, rural carrier telephone photovoltaic systems, and small communication machines. , Soldier GPS power supply, etc.
The earliest application field of photovoltaic power generation technology was in space. As a power source for artificial satellites, it was later popularized for ground applications. In 1958, the first man-made satellite using solar cells as the power source of the signal system, the US “Pioneer I” satellite, was launched into the sky. Since then, a new era in the application of solar cells as a space power source has begun. Because the solar cell can work under a wide range of sunlight intensity and temperature for a long time, it also has the advantages of high reliability, high efficiency, long life and good anti-radiation (including the radiation caused by space charged particles and ultraviolet radiation) performance, so it can be used as An ideal space power supply has been widely used.

Figure 1 Application of solar energy in communications

As communication power sources, most of them are installed in deserts or remote places in the mountains. As many of them are unmanned stations, the application range of solar photovoltaic power systems has also become very extensive.

In terms of telemetry systems, many people use solar cells for the power supply of the unmanned wireless relay station of the Heba Management Telemetry System.

The coverage of TV signals is limited, and it is not easy to receive TV programs in many remote towns and mountainous areas. In the absence of satellite broadcasting, it is simple and feasible to adopt the method of TV transduction. But in general, the turntable is set up on a high mountain, and the power supply is another problem. It is easier to use solar batteries for power supply. The solar satellite receiver is shown in Figure 2.

Figure 2 Solar satellite receiver

②Exploration of solar energy in the aviation field
The “Solar Impulse” aircraft is made in Switzerland. The wings are slender and have a wingspan of 63.4m, which is similar to that of an Airbus A340 aircraft. Its mass is only 1600kg, which is equivalent to an ordinary car. The initiator of the aircraft project is the Swiss soil explorer Bertrand Picard. The “Sunshine Impulse” aircraft is made of carbon fiber materials and has a seat. It is powered by about 12,000 solar panels installed on the wings. The conversion efficiency of solar panels is 22.7%, and the thickness of the panels is only 135μm. , Equivalent to a thick hair. Solar panels not only provide power for the aircraft during the daytime flight, but also need to charge the 400kg lithium battery on board so that the aircraft has enough power to complete the night flight. On March 9, 2015, the Solar Impulse 2 solar-powered aircraft departed from Abu Dhabi, the capital of the UAE, and began flying around the world. It flew to Chongqing, China on March 31, and arrived in Nanjing, China on the evening of April 21, as shown in Figure 3 shown. The solar-powered aircraft aims to realize the dream of “unfalling flight” of pilots, and proves that it can fly at night. The famous hot air balloon adventurer and founder of the Sun Drive Company Bertrand Piccard said: “The greatest adventure of the 21st century is no longer the moon landing. Dependence is transferred out.”

Figure 3 Solar powered aircraft “Solar Impulse”