非接触电能双向推送系统关键技术研究

项目名称： 非接触电能双向推送系统关键技术研究

项目编号： No.50807057

项目类型： 青年科学基金项目

立项/批准年度： 2009

项目学科： 能源与动力工程

项目作者： 戴欣

作者单位： 重庆大学

项目金额： 20万元

中文摘要： 围绕非接触电能双向推送系统关键技术进行研究，项目组在原理方面，提出一种适用非接触电能双向推送模式的双向电能变换拓扑，并构建了基于能量注入与自由振荡的双工作模式，实现了电能的动态双向转换。在此基础上，进一步提出一种基于调幅控制的高频电能变换拓扑，实现了面向负载电能形式需求的电能直接变换，减少了中间能量变换环节，有效提升了系统效率及功率密度。在实现方法上，提出一种基于磁共振阵列电磁耦合机构，解决了传统磁共振耦合模式下的调谐困难问题，有效提高了能量传输稳定性。在控制方法方面，提出基于能量及反射阻抗的负载辨识方法及激磁电流控制方法，解决了负载动态变化条件下的系统参数及负载特性的动态获取问题，并进一步构建了电能动态推送机制。提出针对频率不确定性的系统鲁棒控制及优化方法，解决了存在频率漂移及开关非线性情况下系统不确定性建模及控制问题，保证了系统在负载扰动条件下能量传输的稳定性与鲁棒性。在实验系统研究方面，通过综合利用本项目的研究成果，开发了1KW量级非接触电能双向推送系统，在传输距离为50厘米条件下，系统总体能量传输效率85%

中文关键词： 双向; 推送; 非接触; 电能传输

英文摘要： The project is mainly focused on contactless bi-directional power push-delivery technologies for contactless power transfer (CPT) system In the principle of CPT technology, a bi-directional power converter was proposed to realize energy bi-directional conversion. And an output regulation method was proposed as well, which is based on switching between energy injection mode and free oscillating mode. On the basis, a high frequency converter with amplitude modulation control was proposed for energy direct conversion based on load requirement. It will reduce energy conversion stages and increase the system power density. In the realization of the technology, a novel magnetic coupling mechanism with magnetic resonant coil array was proposed, which is helpful to solve the tuning problem in magnetic resonant mode and increase power transfer stability. As for system control, a load recognition method and resonant current control method were proposed, which is helpful to acquire dynamic system and load parameters. Furthermore, an energy dynamic energy push-delivery mode was also set up. According to system parameter uncertainty, a novel robust control and optimizing method was proposed, which is helpful to improve system stability and robustness under load disturbance. As for experiment study, based on above methods, a 1KW experimental system was developed. Its system efficiency can reach 85% with energy transfer distance 50 cm.

英文关键词： bi-directional; push-delivery; contactless; power transfer