【摘要】：作為無(wú)線電能傳輸系統(tǒng)重要分支，感應(yīng)耦合電能傳輸（inductively coupledpower transfer，ICPT）技術(shù)通過(guò)空間電磁耦合以非接觸的形式將電能從固定電源傳輸給一個(gè)或多個(gè)移動(dòng)負(fù)載。ICPT系統(tǒng)寬功率的應(yīng)用以及高效率的能量傳輸是ICPT技術(shù)迫不及待的發(fā)展趨勢(shì)。本文以多功率等級(jí)的多種家電設(shè)備在ICPT系統(tǒng)通用能量供電平臺(tái)高效率穩(wěn)定運(yùn)行為目標(biāo)來(lái)實(shí)現(xiàn)系統(tǒng)工作頻率和效率的自適應(yīng)控制。旨在通過(guò)分析系統(tǒng)結(jié)構(gòu)、參數(shù)特性，設(shè)計(jì)電容陣列動(dòng)態(tài)調(diào)節(jié)方案和改進(jìn)模糊控制策略，保證不同功率等級(jí)的負(fù)載切換后，整個(gè)系統(tǒng)仍然以滿足要求的高效率穩(wěn)定運(yùn)行。本文的主要工作如下： ①針對(duì)ICPT系統(tǒng)通用能量供電平臺(tái)的負(fù)載具有隨機(jī)性的特點(diǎn)，以提高系統(tǒng)對(duì)多功率等級(jí)的負(fù)載的兼容能力和確保系統(tǒng)高效穩(wěn)定運(yùn)行為目標(biāo)。根據(jù)頻閃映射建模和周期不動(dòng)點(diǎn)理論，，建立ICPT系統(tǒng)的精確數(shù)學(xué)模型和基于軟開(kāi)關(guān)工作點(diǎn)的頻率模型；分析了負(fù)載隨機(jī)變化時(shí)系統(tǒng)的工作頻率特性和系統(tǒng)的輸出特性。通過(guò)對(duì)系統(tǒng)電流模型和效率模型的建立，研究負(fù)載功率等級(jí)變化情況下的效率優(yōu)化問(wèn)題；采用電容陣列動(dòng)態(tài)調(diào)節(jié)電路并設(shè)計(jì)改進(jìn)模糊控制算法，動(dòng)態(tài)調(diào)節(jié)初級(jí)諧振電容陣列等效值，確保系統(tǒng)負(fù)載參數(shù)變化時(shí)，工作頻率的穩(wěn)定，以提高系統(tǒng)功率傳輸效率和確保系統(tǒng)穩(wěn)定性。 ②針對(duì)負(fù)載隨機(jī)變化可能引起的啟動(dòng)問(wèn)題，提出了一種基于能量注入和自由諧振模式的ICPT系統(tǒng)定頻啟動(dòng)優(yōu)化策略，以實(shí)現(xiàn)系統(tǒng)定頻啟動(dòng)到浮頻控制的平滑切換和對(duì)空載運(yùn)行的電壓型ICPT系統(tǒng)的快速保護(hù)。針對(duì)ICPT系統(tǒng)通用能量供電平臺(tái)的隨機(jī)負(fù)載未知的問(wèn)題，提出了一種基于能量注入和自由諧振模式的負(fù)載檢測(cè)方法實(shí)現(xiàn)對(duì)負(fù)載值的檢測(cè)。確保了負(fù)載隨機(jī)變化的ICPT系統(tǒng)通用能量供電平臺(tái)啟動(dòng)過(guò)程的安全可靠性。 ③通過(guò)分析原邊諧振電容與輸出功率的關(guān)系，得到不同功率等級(jí)的系統(tǒng)所對(duì)應(yīng)的原邊諧振電容的閾值和達(dá)到效率要求所需要的原邊諧振電容值。以系統(tǒng)的體積要求、系統(tǒng)的控制精度要求、電容陣列的控制步長(zhǎng)等要求為依據(jù)，設(shè)計(jì)了兩種電容陣列動(dòng)態(tài)調(diào)節(jié)方案實(shí)現(xiàn)對(duì)系統(tǒng)頻率和效率的控制。
[Abstract]:As an important branch of radio energy transmission system, inductively coupled electric energy transmission (inductively coupledpower transfer,) ICPT) technology transmits electric energy from a fixed power source to one or more mobile loads through space electromagnetic coupling. The application of wide power and high efficiency energy transmission in ICPT system is the development trend of ICPT technology. The aim of this paper is to realize the adaptive control of the working frequency and efficiency of the ICPT system based on the high efficiency and stable operation of the multi-power multi-level household appliances in the general energy power supply platform of the ICPT system. By analyzing the system structure, parameter characteristics, designing the capacitor array dynamic adjustment scheme and improving the fuzzy control strategy, the whole system is still running with high efficiency and stability after load switching with different power levels. The main work of this paper is as follows: 1 aiming at the randomness of the load of the general energy power supply platform in ICPT system, the aim is to improve the compatibility ability of the system to the load with multiple power levels and to ensure the efficient and stable operation of the system. Based on stroboscopic mapping modeling and periodic fixed point theory, the exact mathematical model of ICPT system and the frequency model based on soft-switching operating point are established, and the operating frequency characteristics of the system and the output characteristics of the system under random load variation are analyzed. Through the establishment of the current model and efficiency model of the system, the efficiency optimization problem under the condition of load power level change is studied. By adopting the capacitor array dynamic regulation circuit and designing the improved fuzzy control algorithm, the equivalent value of the primary resonant capacitor array is dynamically adjusted to ensure the stability of the operating frequency when the load parameters of the system change. In order to improve the efficiency of power transmission and ensure the stability of the system. In order to solve the startup problem caused by random load variation, a fixed frequency startup optimization strategy for ICPT system based on energy injection and free resonance mode is proposed. In order to realize the smooth switching from fixed frequency start to floatation control and the fast protection of no-load voltage-type ICPT system. A load detection method based on energy injection and free resonance mode is proposed to detect the load value of the general energy supply platform of ICPT system. It ensures the safety and reliability of the startup process of the general energy power supply platform of ICPT system with random load variation. By analyzing the relationship between the primary side resonant capacitance and the output power, the threshold value of the primary side resonant capacitance and the value of the primary side resonant capacitance required to meet the efficiency requirements are obtained for the system with different power levels. According to the requirements of system volume, control precision and control step of capacitor array, two kinds of dynamic control schemes of capacitor array are designed to control the frequency and efficiency of the system.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM724

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本文編號(hào)：2334386