# Design and Implementation of a Polar Wind and Solar Hybrid Power Supply Controller
## 1 Introduction  
The development of soilless culture will be an efficient option when land resources are in extreme conflict with agricultural planting needs. In the space program, the United States has begun to consider the use of the soilless cultivation of edible plants to provide reliable life support for astronauts. Soilless culture is divided into hydroponic cultivation and aerosol (aeroponic) cultivation. [PERSON] et al. analyzed the space application of two soilless planting methods, and pointed out that the crops planted by aerobic cultivation have a better growth environment and nutrient basis [1].  
In order to solve the problem of the supply of fresh vegetables in the Antarctic expedition activities [2], the controllable micro-environmental aeroponic, stereoscopic cultivation technology can be studied in the application of the Zhongshan Station [3]. The technology is realized by suspending the roots of the plants in the column cultivation tower, and supplying the water and fertilizer required for plant growth by intermittently spraying the atomized nutrient solution onto the roots [4]. Compared with traditional planting methods, it can not only adapt to the polar soil-free, low-temperature environment, but can also significantly increase crop yield per unit area [5]. The controllable micro-environment refers to the micro-small crop cultivation room. Due to the particularity of the polar environment, and the limitation of resources in various aspects, the cultivation environment is focused on a small size, which is generally \(3\)m \(\times\)\(1.8\)m \(\times\)\(1.9\)m, and within the interior can be placed two or three aeroponic, stereoscopic cultivation towers. Intelligent control of temperature, humidity, carbon dioxide concentration and light intensity parameters in the environment is achieved by an automatic control system [6]. The electrical equipment of the aeroponic, stereoscopic cultivation device includes a ventilation fan, water pump, heater, fill light and atomizer. These devices require a continuous power supply, and if the power supply is not guaranteed, the growth of the plant will be affected.  
Due to the current situation of the tight diesel power supply in Zhongshan Station, the average temperature, average wind speed and average light intensity data of the past 17 years of Zhongshan Station were obtained in the previous study. The distribution of existing wind and light resources in the station area was analyzed. Out of the conclusion that the scenery resources of Zhongshan Station are sufficient and complementary [3], therefore, the wind and solar complement is used to supply power to the device.  
No matter what kind of system, when it is applied to harsh environments such as the polar, the reliability requirements are very strict. [PERSON] fully validated the reliability of the RPi system when designing an infrared device controlled by RaspberryPi for recording the movement of polar invertebrates under natural conditions [7].  
Therefore, for the wind-solar complementary power supply system designed in this paper, firstly, combined with the load electricity data, the scientific calculation method was used to match the wind, light and storage capacity, and the equipment selection for a low temperature resistant environment was carried out [8]. Secondly, based on the STC8A8K64S4A12 microcontroller unit (MCU), this paper designs a controllable, micro-environmental aerosol, three-dimensional cultivation wind-solar hybrid power supply system controller, and formulates a power management strategy for the special polar day and polar night phenomenon in Antarctica, then effectively coordinates the operation of various parts of the power supply system, and ensures a stable power supply of the device.