【摘要】：無線電能傳輸技術(shù)（Wireless Power Transfer，簡稱WPT）是一種基于電磁耦合感應(yīng)原理，綜合利用現(xiàn)代電力電子應(yīng)用技術(shù)、磁場耦合技術(shù)、大功率高頻能量變換技術(shù)等，采用現(xiàn)代先進控制理論和策略，實現(xiàn)電能以電磁耦合形式從電網(wǎng)向移動用電設(shè)備提供能量的新型能量傳輸技術(shù)，具有安全、環(huán)保、便捷、易維護、對環(huán)境的適應(yīng)能力強等優(yōu)點。 隨著WPT技術(shù)在應(yīng)用領(lǐng)域拓展需要，能對負載有普遍適應(yīng)性的WPT系統(tǒng)越來越受到人們的關(guān)注。負載大小和性質(zhì)的差異性使得系統(tǒng)無功補償網(wǎng)絡(luò)的拓撲結(jié)構(gòu)有著多種多樣的形式，從而對不同拓撲的功率控制策略也具有多樣性。目前，對WPT系統(tǒng)負載識別的相關(guān)技術(shù)缺乏深入的研究。在很多情況下，如果采用傳統(tǒng)的負載辨識方式，系統(tǒng)負載的電氣參數(shù)或運行狀態(tài)發(fā)生微小的改變，都會導(dǎo)致系統(tǒng)的效能下降，甚至導(dǎo)致系統(tǒng)的崩潰。同時，傳統(tǒng)的負載識別方式只能針對某些固定結(jié)構(gòu)的無功補償拓撲，若系統(tǒng)負載發(fā)生變化，補償網(wǎng)絡(luò)拓撲也會隨之變化，這就需要對整個系統(tǒng)進行重新建模分析，缺乏一般性。這就會導(dǎo)致系統(tǒng)各個功能模塊間的適應(yīng)性降低，限制了該技術(shù)在各領(lǐng)域的推廣。 本文描述了WPT技術(shù)中感應(yīng)耦合形式系統(tǒng)的基本工作原理，分析負載變化對系統(tǒng)的影響，研究該變化對系統(tǒng)諧振狀態(tài)的影響程度，進一步針對系統(tǒng)輸出功率進行分析，定性定量的得出負載的變化對系統(tǒng)功率輸出的影響。針對現(xiàn)有的負載識別技術(shù)，包括基于能量注入和能量自由振蕩方式的阻抗辨識技術(shù)和基于反射阻抗的負載識別技術(shù)。對各技術(shù)方案的優(yōu)缺點進行研究分析。然后，針對ICPT系統(tǒng)技術(shù)國內(nèi)外現(xiàn)有的功率控制方法，，分析各種方案的優(yōu)缺點，給出本文所研究負載識別方案的可行性與必要性�；谝陨涎芯糠治�，引入一種基于能量模型的負載識別技術(shù)，來滿足系統(tǒng)需求的功率控制策略，并詳細的說明計算流程，給出計算公式。綜上，作者在文章中旨在提出一種具有一般性，能夠在復(fù)雜系統(tǒng)拓撲中均適用的負載識別方法，以及對所提方法的進一步優(yōu)化改進。 使用MATLAB/SIMULINK建立系統(tǒng)仿真模型，通過仿真驗證了所提出負載識別方案的理論正確性，對仿真所得數(shù)據(jù)進行分析，確定了該方案的有效識別范圍和條件。搭建了無線供電系統(tǒng)實驗平臺，針對實際的工程系統(tǒng)在不同性質(zhì)和大小負載情況下進行了實驗。實驗結(jié)果驗證了本文提出的負載識別方案的實驗正確性和工程可行性，本文研究內(nèi)容對無線電能傳輸技術(shù)進一步推廣起了積極的作用。
[Abstract]:Wireless Power Transfer (WPT) is based on the principle of electromagnetic coupling induction, comprehensive utilization of modern power electronic application technology, magnetic field coupling technology, high-power high-frequency energy conversion technology, etc., adopting modern advanced control theory and strategy, The novel energy transmission technology for realizing the energy of the electric energy from the power grid to the mobile electric equipment in the form of an electromagnetic coupling has the advantages of safety, environmental protection, convenience, easy maintenance, strong adaptability to the environment and the like. With the development of the WPT technology in the application field, the WPT system with general adaptability to the load is more and more popular Note: The difference of load size and nature makes the topological structure of the reactive power compensation network of the system have a wide variety of forms, so the power control strategy of different topologies also has various forms. Sex. Currently, there is a lack of in-depth research on the related technology of the load identification of the WPT system Research. In many cases, if a traditional load identification method is adopted, the electrical parameters or operating conditions of the system load can be slightly changed, resulting in a reduction in the performance of the system and even a system failure The traditional load identification method can only be used for the reactive compensation topology of some fixed structures, and if the system load is changed, the compensation network topology can also change, this leads to a reduction in the adaptability between the various functional modules of the system, which limits the push of the technique in the various fields In this paper, the basic working principle of the inductive coupling formal system in WPT technology is described in this paper, the influence of the load change on the system is analyzed, the influence of the change on the system's resonant state is studied, and the output power of the system is further studied. Line analysis, qualitative and quantitative results of load change to system power output The influence of the current load identification technology, including the impedance identification technology based on energy injection and energy free oscillation, and the load recognition based on the reflection impedance Don't technology. The advantages and disadvantages of each technical scheme are researched. In this paper, the existing power control methods at home and abroad of the ICPT system are analyzed, and the advantages and disadvantages of the schemes are analyzed, and the feasibility and feasibility of the load identification scheme studied in this paper are given. Based on the above research and analysis, a power control strategy based on energy model is introduced to meet the power control strategy of the system requirement, and the calculation process is described in detail. In general, that author is intend to propose a load identification method which is general, which can be applied in the topology of complex system, and the further optimization of the proposed method. The system simulation model is established by using MATLAB/ SIMULINK, the theoretical correctness of the proposed load identification scheme is verified by the simulation, and the data of the simulation is analyzed, and the effective identification of the scheme is determined. The scope and condition of the wireless power supply system are set up. The experimental platform of the wireless power supply system is set up, and the actual engineering system is under the condition of different properties and loads The experiment is carried out. The experimental results verify the experimental correctness and the feasibility of the load identification scheme presented in this paper. The contents of this paper are further extended to the radio transmission technology.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM724

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