基于Π-S复合谐振的ECPT系统及其调谐控制

发布时间：2018-07-10 15:53

本文选题：无线电能传输 + 电场耦合　；参考：《重庆大学》2016年硕士论文

【摘要】：无线电能传输(Wireless Power Transfer,WPT)技术在理论研究和工程技术方面已取得一系列成果,并且在电动汽车、移动机器人、智能制造等很多领域得到应用。其中,电场耦合电能传输(ECPT,Electrical-field coupled Power transfer)系统采用电场作为电能输送介质,以其独特的优势受到了国内外专家学者的高度关注,并围绕ECPT系统的电能变换拓扑构建、耦合机构设计、原边恒流控制等问题开展了大量研究,获得了一定的理论性研究成果,并且在航天电机、电动汽车、生物医电、照明用具、平板电脑充电等领域得到应用。本文首先对ECPT系统的国内外研究现状进行了阐述,并简要介绍了该系统的工作原理及优势。然后对目前ECPT系统常用的电能变换拓扑进行了详细分析,在此基础上,为了解决耦合机构高压激励需求与高频电能变换环节中开关管MOSFET低压需求之间相互制约的矛盾,提出了一种发射端采用?-CLC谐振电路,拾取端采用S型串联补偿的?-S型电路拓扑;在分析?-S型ECPT系统模型频率特性、功率传输特性以及电压传输特性的基础上,给出了具有原边极板间电压泵升效果的谐振电路参数配置方法,并对该参数配置方法下系统的参数敏感性进行了分析。本文针对传输距离变化引起新型ECPT系统传输性能下降的问题,提出了一种基于相控电感的无级调谐方法,实现了传输距离在1-5mm范围内变化时系统始终工作在谐振状态,提高了系统的传输功率以及工作稳定性;然后针对该新型ECPT系统设计了调谐控制电路及其相关软件。最后基于Matlab/simulink平台构建了仿真模型,并搭建了相应的ECPT实验装置,仿真和实验结果验证了所提电路拓扑及其调谐方法的有效性和正确性。
[Abstract]:Wireless Power transfer (WPT) technology has made a series of achievements in theoretical research and engineering technology, and has been applied in many fields such as electric vehicles, mobile robots, intelligent manufacturing and so on. Among them, electric field coupled power transfer (ECPT) system adopts electric field as power transmission medium, which is highly concerned by experts and scholars at home and abroad because of its unique advantages, and the coupling mechanism is designed around the electric power transformation topology of ECPT system. A large number of researches have been carried out on the original edge constant current control, and some theoretical results have been obtained, and they have been applied in the fields of aerospace motor, electric vehicle, biomedicine, lighting appliance, tablet computer charging and so on. In this paper, the research status of ECPT system at home and abroad is described, and the working principle and advantages of ECPT system are briefly introduced. Then, the current power conversion topology of ECPT system is analyzed in detail. On this basis, in order to solve the contradiction between the high voltage excitation demand of coupling mechanism and the low voltage demand of switching tube MOSFET in the link of high frequency power conversion. In this paper, a new type of circuit topology is presented, which adopts the resonant circuit of Con CLC at the transmitter and the circuit with the series compensation of the S type at the pickup end, based on the analysis of the frequency characteristics, the power transmission characteristics and the voltage transmission characteristics of the ECPT system model. The parameter configuration method of resonant circuit with the effect of voltage pump between plates is presented, and the sensitivity of the system is analyzed. In this paper, a stepless tuning method based on phase-controlled inductors is proposed to reduce the transmission performance of the new ECPT system caused by the change of transmission distance. It is realized that the system always works in the resonant state when the transmission distance varies in the range of 1-5mm. The transmission power and working stability of the system are improved, and the tuning control circuit and its related software are designed for the new ECPT system. Finally, the simulation model is constructed based on Matlab / Simulink platform, and the corresponding ECPT experimental device is built. The simulation and experimental results verify the validity and correctness of the proposed circuit topology and tuning method.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM724

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