Design Of Total Control Hardware For SSPS Demonstration System

As a candidate for the fourth generation of energy,solar energy has been widely concerned and studied all over the world for its clean,pollution-free and aplenty reserves.In the past,most of the research focused on the ground solar energy.Compared with the ground solar energy,the space solar energy has the advantages of long irradiation time,continuous stability,not affected by day and night and climate.In order to make effective use of space solar energy,it is necessary to establish a space solar power station as a transit station.First,the solar energy is converted into electric energy in space,and then the collected electric energy is transmitted to the ground through wireless energy transmission,which is incorporated into the power system for the production and life of users.In order to verify the feasibility of space solar power station,based on OMEGA(Orb-shape Membrane Energy Gathering Array)scheme,the project team built a demonstration system of space solar power station to verify the transmission efficiency and feasibility of the design scheme.In the process of demonstration system experiment,we need to adjust the attitude of OMEGA concentrator platform and the beam direction of microwave transmitting antenna in real time to improve the energy collection,conversion and transmission efficiency of the whole demonstration system.we need to design a set of power management system according to the characteristics of microwave receiving and rectifying output,so as to ensure the safety and reliability of output power and maximize the energy utilization.Based on this,this paper designs and develops a total control hardware platform for SSPS demonstration system to ensure the smooth operation of the whole demonstration system.The main research contents include two aspects,the one is the design of mechanical adjustment controller for microwave beam pointing,including the position and attitude adjustment of OMEGA solar collector platform,and the other is the design of ground receiving power management controller,including the design of maximum power point tracking controller,the release and supplement adjustment of microwave receiving rectifier output power,and the load control System.In view of the above research content,the design of microwave beam pointing mechanical adjustment controller,hardware circuit design and hardware programming,including power supply circuit,servo motor drive waveform transformation and the necessary interface circuit design,are completed,and the S-shaped curve acceleration and deceleration algorithm of servo motor is analyzed and simulated.The project design,hardware circuit design and hardware programming of the ground receiving power management controller are completed,including the main circuit,control circuit,Buck impedance conversion,adjustable load control circuit design.The DC-DC impedance converter and the maximum power point tracking algorithm are studied and analyzed theoretically.A maximum power point tracking algorithm suitable for this topic is proposed and Programming implementation.The communication link design and communication protocol design of the main control system are completed.In addition,according to the working characteristics of the demonstration system,some additional safety protection work has been completed,including the temperature measurement of the feed inner wall,the temperature measurement of the microwave transmitting antenna power amplifier,the laser working indication and the servo motor travel limit.Finally,the test platform is set up to complete the joint test and test results analysis of the general control system.The test results show that the designed microwave beam pointing mechanical adjustment controller,the ground receiving power management controller to meet the functional needs and indicator requirements of the project,and verifies the rationality and feasibility of the design of the total control hardware of the space solar power station proposed in this paper.