【摘要】：風(fēng)能是自然界中廣泛存在的一種可再生清潔能源，將環(huán)境中的風(fēng)能轉(zhuǎn)換為電能的微能源在無線傳感、自治式微系統(tǒng)等領(lǐng)域具有極大的應(yīng)用前景，基于風(fēng)致振動(dòng)機(jī)理的壓電風(fēng)能采集器具有結(jié)構(gòu)簡(jiǎn)單、功率密度大、可微型化等諸多優(yōu)點(diǎn)，近幾年受到國內(nèi)外廣泛關(guān)注。由于微型風(fēng)能采集器輸出的是交流電，并且平均輸出功率較低，研究低功耗的高效電源管理電路對(duì)推廣其應(yīng)用具有十分重要的意義。 基于懸臂梁壓電振動(dòng)能采集器集總參數(shù)模型，建立了包含充電電路在內(nèi)的懸臂梁壓電能量采集器的理論模型，在此基礎(chǔ)上對(duì)常見的四種充電電路進(jìn)行了分析和仿真；針對(duì)微型風(fēng)致振動(dòng)壓電能量采集器的輸出特點(diǎn)，設(shè)計(jì)了充電電路，完成了充電電路的調(diào)試。主要研究?jī)?nèi)容包括： ①查閱文獻(xiàn)，分析總結(jié)了微型振動(dòng)能和風(fēng)能采集器及相應(yīng)的電源管理電路的國內(nèi)外研究現(xiàn)狀； ②基于懸臂梁壓電振動(dòng)能采集器的集總參數(shù)模型，建立了分別包含標(biāo)準(zhǔn)能量采集電路(SEH)、同步電荷提取電路(SCE)、并聯(lián)同步開關(guān)電感電路(P-SSHI)和串聯(lián)同步開關(guān)電感電路(S-SSHI)的懸臂梁壓電振動(dòng)能采集器的模型，得到了功率的表達(dá)式，仿真結(jié)果表明，，在激勵(lì)較大的理想情況下，基于同步開關(guān)的充電電路具有更好的性能； ③完成了風(fēng)致振動(dòng)壓電能量采集器充電電路的設(shè)計(jì)與仿真，通過對(duì)現(xiàn)有充電電路進(jìn)行優(yōu)化，增大了充電電路輸出功率。仿真結(jié)果表明，優(yōu)化電路的輸出功率提高約27.7%； ④完成了基于同步開關(guān)的充電電路的版圖設(shè)計(jì)，實(shí)驗(yàn)結(jié)果表明，當(dāng)風(fēng)速為14.2m/s，同標(biāo)準(zhǔn)能量采集電路相比，本文的充電電路可以使電容器電壓提高約74%，電容器上存儲(chǔ)的電能約增加2倍，因此本文的充電電路顯著提高了充電效率。
[Abstract]:Wind energy is a kind of renewable clean energy which is widely existed in the natural world, and the micro-energy source for converting the wind energy in the environment into electric energy has great application prospect in the fields of wireless sensing, autonomous micro-system and the like, and the piezoelectric wind energy collector based on the wind-induced vibration mechanism has the advantages of simple structure, The power density is large, and can be miniaturized and the like, and has been widely concerned at home and abroad in recent years. Because the output of the micro-wind energy collector is an alternating current, and the average output power is low, the high-efficiency power management circuit with low power consumption is of great significance to the popularization of the application. Based on the lumped parameter model of the cantilever piezoelectric vibration energy collector, the theoretical model of the piezoelectric energy collector of the cantilever beam, including the charging circuit, is established, and the four charging circuits are analyzed and simulated on the basis of the model. In view of the output characteristic of the micro-wind-induced vibration piezoelectric energy collector, the charging circuit is designed, and the regulation of the charging circuit is completed. Test. Main study content package In this paper, the author reviews the literature and summarizes the research and development of the micro-vibration energy and the wind energy collector and the corresponding power management circuit at home and abroad A Study of the Current Situation and the Current Set of the Piezoelectric Vibration-energy Collector Based on the Cantilever Beam The model of the cantilever piezoelectric vibration energy collector with the standard energy acquisition circuit (SEH), the synchronous charge extraction circuit (SCE), the parallel synchronous switch inductance circuit (P-SSHI) and the series synchronous switch inductance circuit (S-SSHI) is established. The simulation results show that the charging circuit based on the synchronous switch has the advantages of high excitation, better performance; the invention completes the design and simulation of the charging circuit of the wind-induced vibration piezoelectric energy collector, The electrical circuit is optimized to increase the charge The simulation results show that the output power of the circuit is improved. The design of the design of the charging circuit based on the synchronous switch is completed. The experimental results show that when the wind speed is 14.2 m/ s, the charging circuit in this paper can make the capacitor The voltage of the device is increased by about 74%, and the electric energy stored on the capacitor is increased by about 2 times, so the charging circuit of the present invention
【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)】：TM619

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 賀學(xué)鋒;印顯方;杜志剛;劉興;;懸臂梁壓電振動(dòng)能采集器的集總參數(shù)模型和實(shí)驗(yàn)驗(yàn)證[J];納米技術(shù)與精密工程;2012年02期

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