Research On The Novel Self-adapting Variable-topology ICPT System For Distributed Multi-load

With the improvement of society, wireless power transfer(WPT) technology,especially inductively coupled power transfer(ICPT) technology, has been made more and more great progresses and its wide application prospects are demonstrated. At present, the majority of ICPT systems which are researched and used by scholars are the single-load ICPT technology. But due to “point-to-point” power supply mode adopted by most ICPT systems, this mode has a lot of limitations for multi-load power supply situation. Although there are many scholars studying related theories about ICPT technology for multi-load, most theories are researched based on the single-load ICPT technology and have little guiding significance for multi-load ICPT technology.And they also have some drawbacks such as low position tolerance of load,unbalanced power supply, different transmission efficiency and limited number of power supply loads.The research on thesis is supported by the Nation Natural Science Foundation of“Research on mechanism and key technology of self-configuration wireless cellular power supply network with asymmetric magnetic circuit(Fund No.: 51307173)”, and mainly concentrates on the research on the ICPT technology for distributed multi-load.Combined with desktop distributed multi-load parallel power supply technology, a novel self-adapting variable-topology ICPT system for distributed multi-load has been proposed and researched.Firstly, the thesis has introduced current status of researches and developments about ICPT technology for distributed multi-load in the field of desktop wireless power supply at home and abroad. The thesis has also gived some common structure of ICPT system for distributed multi-load, respectively, researched its structural properties and transmission characteristics as an example of a single-phase multi-load ICPT system and a three-phase multi-load ICPT system, and ultimately gived the critical circuits selection and design methods of ICPT system for distributed multiload and general design of the entire system.Then, aimed to existing problems, such as unbalanced power supply, low transmission efficiency and high cost, a novel self-adapting variable-topology ICPT system for distributed multi-load has been proposed by the thesis. According to detecting the number and position of loads, the system can automatically select the optimal operation mode and power to loads efficiently based on the “point-to-point”mode. From the working principle of the novel distributed multi-load ICPT system,the thesis has analyzed and studied the various operating modes of the system and the control strategies and transmission characteristics of each corresponding operating mode detailedly. In addition, the main circuit and the various components of the control circuits of the novel self-adapting variable-topology ICPT system for distributed multi-load were designed.Finally, as an example of the desktop distributed multi-load wireless power supply system, by building MATLAB simulation models and experimental models of the novel self-adapting variable-topology ICPT system for distributed multi-load,further the theoretical analysis correctness of the novel distributed multi-load ICPT system has been verified. Both the simulation results and experimental results also show that on the basis of reducing construction cost the novel distributed multi-load ICPT system can achieve space freely distributed loads powered constantly and efficiently, and play a certain guiding role in the field of desktop multi-load wireless power supply.