發(fā)布時(shí)間：2018-04-18 23:27

  本文選題：本安電源 + Buck變換器��； 參考：《煤炭科學(xué)技術(shù)》2016年11期

【摘要】：針對(duì)煤礦井下封閉、可燃性氣體多、礦用本安電源須穩(wěn)定運(yùn)行的特點(diǎn),對(duì)礦用本安電源變換器進(jìn)行設(shè)計(jì)。根據(jù)最大輸出紋波電壓和本安判據(jù)的要求,分析了Buck變換器的工作原理,確定了電路中電容和電感參數(shù)的范圍,提出了本安電源Buck變換器閉環(huán)控制方法,實(shí)現(xiàn)了Buck變換器的閉環(huán)仿真,改進(jìn)了實(shí)際電路的設(shè)計(jì)調(diào)試方案。為驗(yàn)證結(jié)論的可靠性,利用MATLAB軟件進(jìn)行仿真,仿真結(jié)果表明:當(dāng)電感選用0.1 m H,電容選用500μF時(shí),Buck變換器可以穩(wěn)定運(yùn)行。使用閉環(huán)控制方法后,系統(tǒng)傳遞函數(shù)的穿越頻率為9.96 k Hz,相角裕度為58.5°,與未使用閉環(huán)控制方法之前相比,Buck變換器能夠有效降低輸出紋波電壓,保持輸出電壓恒定,證實(shí)了本安電源Buck變換器閉環(huán)控制的可行性。
[Abstract]:In view of the characteristics of closed mine, more combustible gas and stable operation of mine intrinsically safe power supply, the design of mine intrinsically safe power source converter is carried out.According to the requirement of maximum output ripple voltage and local safety criterion, the working principle of Buck converter is analyzed, the range of capacitance and inductance parameters in the circuit is determined, and the closed-loop control method of Buck converter is proposed.The closed loop simulation of Buck converter is realized, and the design and debugging scheme of practical circuit is improved.In order to verify the reliability of the conclusion, the simulation results with MATLAB software show that when the inductance is 0.1 MHz and the capacitance is 500 渭 F, the Buck converter can operate stably.After using the closed-loop control method, the crossing frequency of the system transfer function is 9.96kHz, and the phase angle margin is 58.5 擄. Compared with the previous closed-loop control method, the Buck converter can effectively reduce the output ripple voltage and keep the output voltage constant.The feasibility of closed-loop control of Buck converter is verified.
【作者單位】： 中國(guó)礦業(yè)大學(xué)(北京)機(jī)電與信息工程學(xué)院;
【基金】：中央高�；�本科研業(yè)務(wù)費(fèi)專(zhuān)項(xiàng)資金資助項(xiàng)目(2009KJ02,2010YJ03)
【分類(lèi)號(hào)】：TD68

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本文編號(hào)：1770573