【摘要】：為煤礦井下、石油化工等易燃、易爆性環(huán)境供電的設(shè)備一定要考慮防爆的問題,本安型(本質(zhì)安全型)開關(guān)電源也因此應(yīng)運而生。傳統(tǒng)礦用本安型開關(guān)變換器存在電氣特性指標(biāo)(如低電感電流紋波,低輸出電壓紋波,高功率及效率)要求大電感、大電容與本安特性要求小電感、小電容的矛盾以及普通單通道Buck-Boost變換器由于受本安性能的制約輸出功率難以提高的問題。本文由此分析基于交錯并聯(lián)磁集成理論的本質(zhì)安全型Buck-Boost變換器。根據(jù)所提出的等效電氣電感和等效本安電感的定義,通過選擇適當(dāng)?shù)鸟詈舷禂?shù)來提高等效電氣電感并降低等效本安電感,從而使變換器滿足電氣性能和本安性能的要求,且提高了變換器的輸出功率。首先分析了兩相交錯并聯(lián)磁集成Buck-Boost變換器的工作原理、耦合系數(shù)與占空比的關(guān)系,得到滿足本安特性與電氣特性的最佳耦合系數(shù)。以輸入電壓、負(fù)載電阻為自變量,根據(jù)耦合電感的變化,推導(dǎo)出在不同工作模式下的耦合電感電流、輸出紋波電壓的變化規(guī)律并得出相應(yīng)的極大值,用仿真加以驗證；然后分別討論兩相交錯并聯(lián)磁集成Buck-Boost變換器輸出短路時所釋放的能量以及電感斷開時所釋放的能量,得出非爆炸本質(zhì)安全(輸出本安、內(nèi)部本安)判據(jù),并首次對本質(zhì)安全型交錯并聯(lián)磁集成Buck-Boost變換器的無源元件進行優(yōu)化設(shè)計；最后通過和普通單通道本安型變換器進行比較,得出兩相交錯并聯(lián)磁集成本安型Buck-Boost變換器在電氣性能和本安性能上均有顯著的提高。理論分析用仿真與實驗得以驗證。
[Abstract]:For the coal mine underground, petrochemical and other flammable and explosive environment power supply equipment must consider the problem of explosion protection, and the intrinsically safe switching power supply came into being. In traditional mine intrinsic-safe switching converters, the electrical characteristics (such as low inductance current ripple, low output voltage ripple, high power and efficiency) require large inductance, large capacitance and low inductance with intrinsically safe characteristics. The contradiction of small capacitance and the difficulty of improving the output power of ordinary single channel Buck-Boost converter due to the limitation of intrinsic security performance. In this paper, the intrinsically safe Buck-Boost converter based on interleaving parallel magnetic integration theory is analyzed. According to the definitions of the equivalent electrical inductance and the equivalent intrinsically safe inductor, the equivalent electrical inductance and the equivalent intrinsically safe inductance can be improved and reduced by selecting the appropriate coupling coefficient, so that the converter can meet the requirements of the electrical performance and the intrinsically safe performance. The output power of the converter is improved. Firstly, the working principle of two-phase interleaved parallel magnetically integrated Buck-Boost converter and the relationship between the coupling coefficient and duty cycle are analyzed, and the optimum coupling coefficient satisfying the intrinsic and electrical characteristics is obtained. Taking input voltage and load resistance as independent variables, according to the variation of coupling inductance, the variation law of coupling inductor current and output ripple voltage under different working modes is deduced and the corresponding maximum is obtained, which is verified by simulation. Then the energy released by the two-phase interleaved parallel magnetically integrated Buck-Boost converter and the energy released by the inductor when the inductor is disconnected are discussed respectively, and the non-explosive intrinsic safety criterion is obtained. The passive components of the intrinsically safe interleaving parallel magnetically integrated Buck-Boost converter are optimized for the first time. It is shown that the electrical performance and the intrinsic safety performance of the two-phase interleaved parallel integrated intrinsically safe Buck-Boost converter are significantly improved. The theoretical analysis is verified by simulation and experiment.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM46

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