發(fā)布時間：2018-07-23 19:16

【摘要】：感應(yīng)耦合電能傳輸(ICPT)是一種新型的電能傳輸技術(shù)得到了廣泛的研究和應(yīng)用。傳統(tǒng)的AC-DC-AC型ICPT系統(tǒng)存在整體效率低、控制復(fù)雜、功率密度小等缺點(diǎn)，限制了無線電能傳輸技術(shù)在實(shí)際系統(tǒng)中的應(yīng)用和推廣。由于系統(tǒng)負(fù)載具有明顯的多變性和操作隨意性，極易造成系統(tǒng)性能和穩(wěn)定性的下降，所以如何提高負(fù)載隨機(jī)變化條件下的系統(tǒng)穩(wěn)定性，是亟需解決和研究的重要難題。 論文采用雙AC-DC-AC變換器技術(shù)，減少了濾波電容和調(diào)壓環(huán)節(jié)，提高了變換效率和輸入功率因數(shù)�；�于阻抗分析法對LCL-S型拓?fù)溥M(jìn)行分析，，得到了系統(tǒng)原邊諧振電流的輸入輸出關(guān)系；針對由負(fù)載變化造成原邊諧振電流動態(tài)波動，從而影響能量傳輸磁場的穩(wěn)定性的問題，提出了基于原邊系統(tǒng)的諧振電流包絡(luò)穩(wěn)恒控制策略；并針對電流有效值反饋法實(shí)際應(yīng)用困難的問題，通過波形分析法簡化了控制的復(fù)雜度，保證了系統(tǒng)在負(fù)載變換的情況下原邊諧振電流的穩(wěn)定性。最后還針對系統(tǒng)負(fù)載合法性和安全性的問題，介紹了一種實(shí)用的基于諧振電流峰值的非法負(fù)載檢測方案。 針對ICPT系統(tǒng)負(fù)載電壓多樣性的需求，結(jié)合系統(tǒng)副邊能量變換特性，提出了兩種輸出電壓可調(diào)控制的策略，分別是等脈寬斬波控制和整諧振正弦半波間歇控制。并對這兩種控制策略的計(jì)算過程進(jìn)行了推導(dǎo),最后總結(jié)了輸出電壓可調(diào)控制的軟開關(guān)實(shí)現(xiàn)方法與間歇方式的選擇。 最后，基于MATLAB仿真軟件和實(shí)驗(yàn)系統(tǒng)對控制器的穩(wěn)定性進(jìn)行了驗(yàn)證。仿真與實(shí)驗(yàn)結(jié)果表明本文所設(shè)計(jì)的諧振電流包絡(luò)穩(wěn)恒控制系統(tǒng)在負(fù)載變化的情況下具有較好的穩(wěn)定性，并驗(yàn)證了輸出電壓可調(diào)控制策略能夠滿足負(fù)載電壓多樣性的需求。
[Abstract]:Inductively coupled power transmission (ICPT) is a new type of power transmission technology which has been widely studied and applied. The traditional AC-DC-AC ICPT system has the disadvantages of low efficiency, complex control and low power density, which limits the application and popularization of radio energy transmission technology in practical systems. Because the system load has obvious variability and random operation, it is easy to cause the degradation of system performance and stability. Therefore, how to improve the stability of the system under the condition of random variation of load is an important problem to be solved and studied urgently. In this paper, double AC-DC-AC converter technology is used to reduce the filter capacitance and voltage regulation, and to improve the conversion efficiency and input power factor. Based on the analysis of LCL-S topology based on impedance analysis, the input and output relationship of the primary resonant current of the system is obtained, and the dynamic fluctuation of the primary resonant current caused by the change of load affects the stability of the magnetic field of energy transmission. The resonant current envelope stabilization control strategy based on the original edge system is proposed, and the complexity of the control is simplified by waveform analysis method, which is difficult to apply to the practical application of the current RMS feedback method. The stability of the resonant current of the system is ensured under the condition of load conversion. Finally, aiming at the problem of system load legality and security, a practical illegal load detection scheme based on peak resonant current is introduced. In order to meet the demand of load voltage diversity in ICPT system, two kinds of output voltage adjustable control strategies are proposed, which are equal pulse width chopping control and full resonant half-wave intermittent control, combined with the energy conversion characteristics of the secondary side of the system. The calculation process of the two control strategies is deduced. Finally, the realization method of the output voltage adjustable control and the selection of the intermittent mode are summarized. Finally, the stability of the controller is verified based on MATLAB simulation software and experimental system. The simulation and experimental results show that the resonant current envelope stability control system designed in this paper has good stability in the case of load change, and it is verified that the output voltage adjustable control strategy can meet the requirements of load voltage diversity.
【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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本文編號：2140389