动态负载ICPT系统接收端稳压控制策略研究

发布时间：2018-03-24 17:54

本文选题：ICPT　切入点：反射阻抗　出处：《安徽理工大学》2017年硕士论文

【摘要】：感应耦合电能传输技术的原理是将交流市电通过一系列的整流与逆变转换后从发射端通过磁场耦合的方式传送到接收端。非接触供电技术的发展迅速,特别是进入21世纪后,研究人员对ICPT技术的研究主要是针对恒定负载稳压供电方面。但随着人们需求的增加,动态多负载供电也随之出现。动态多负载供电主要是负载在发生扰动时会加大对输出电压的影响,使输出电压不能稳定在所需要的范围内,而且,负载的变动会引起副边回路输出电压的跳变继而引发原边逆变器回路大的环流,造成系统的传输功率降低,严重时就会烧坏器件甚至引发火灾。对此,本文验证了一种新的控制策略:负载的接入或者移除,会使负载参数发生扰动,反射到原边的阻抗会发生改变,进而原边的电压和电流就会变化,通过采集发射端的电压和电流来间接控制负载电压的稳定。本课题先从研究无线电能传输技术的背景出发,讲述了无线充电系统在国内外的研究现状和发展趋势,确定了研究本课题的目的、意义和主要内容。其次,分析了现有的几种无线供电的稳压控制策略的优点和缺点。之后,介绍了 ICPT系统的传输拓扑结构和工作过程,并在此基础上介绍了基于反射阻抗控制策略的基本原理和控制方法。然后通过Matlab/Simulink仿真平台搭建了基于互感理论的仿真模型,仿真分别输出了系统在恒定负载下、轻载切换到重载以及重载切换到轻载三种情况下的负载电压,验证了反射阻抗控制策略的可行性。最后,设计了系统的硬件电路,并编写了软件控制部分,搭建了系统的硬件实验平台,验证了这种稳压控制策略的有效性。通过仿真波形和实验结果可知,基于反射阻抗的稳压控制策略,可在不增加元器件的基础上通过软件控制就可达到负载的稳压效果。
[Abstract]:The principle of inductively coupled power transmission technology is to transfer AC power through a series of rectifiers and inverters from the transmitter to the receiving end through magnetic field coupling. The technology of non-contact power supply is developing rapidly, especially after entering the 21st century. The researchers' research on ICPT technology is mainly focused on the steady load power supply. But as the demand increases, Dynamic multi-load power supply also appears. Dynamic multi-load power supply is that the load will increase the impact on the output voltage in the event of disturbance, so that the output voltage can not be stabilized within the required range, and, The change of load will lead to the jump of output voltage of auxiliary circuit, which will lead to the large circulation of the original side inverter circuit, which will reduce the transmission power of the system, and will burn out the device or even cause fire when it is serious. This paper verifies a new control strategy: when load is accessed or removed, the load parameters will be disturbed, the impedance reflected to the original edge will change, and the voltage and current of the original edge will change. The stability of load voltage is controlled indirectly by collecting the voltage and current of the transmitter. Firstly, from the background of the research on radio energy transmission technology, the research status and development trend of wireless charging system at home and abroad are described. The purpose, significance and main contents of the research are determined. Secondly, the advantages and disadvantages of several existing voltage stabilizing control strategies for wireless power supply are analyzed. After that, the transmission topology and working process of ICPT system are introduced. Then the simulation model based on mutual inductance theory is set up through Matlab/Simulink simulation platform, and the simulation outputs the system under constant load. The feasibility of reflective impedance control strategy is verified by switching from light load to heavy load and heavy load to light load. Finally, the hardware circuit of the system is designed and the software control part is written. The hardware experiment platform of the system is built to verify the effectiveness of the voltage stabilizing control strategy. The simulation waveform and experimental results show that the voltage stabilization control strategy based on reflective impedance is effective. The load stabilization effect can be achieved by software control without adding components.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM724

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