本质安全型两相交错并联反激变换器的研究

发布时间：2018-04-09 00:21

本文选题：本质安全型　切入点：两相交错并联　出处：《辽宁工程技术大学》2014年硕士论文

【摘要】：若将直流电源应用于煤炭、石油化工等危险环境中,必须满足其不会引燃环境中可燃物的要求,其中本质安全(本安)是一种较好防爆方式。本安电源与隔爆电源相比其不但可以通过去除笨重的外壳获得较小的体积和较轻的重量,而且在节约了制作成本的同时,使电源可以具有较高的安全性。正是由于这些优点,它在煤矿、石化等领域具有广阔的应用前景。本文研究了本质安全型交错并联反激变换器的本质安全特性,并对其进行了设计,拟将其应用在矿用本质安全型直流开关电源中。首先,在研究两相交错并联反激变换器的工作原理及电感电流的基础上,划分了两相交错并联反激变换器的工作模式和分析能量的传输过程,指出其存在CCM、DCM-CCM和DCM三种工作模式；其次,在不同工作模式下,通过研究两相交错并联反激变换器的输入电压与设计变压器的电感量对其输出电压纹波和电感电流峰值的影响,总结出它们之间的客观规律,同时对两相交错并联反激变换器的输出本质安全特性和内部本质安全特性进行研究,给出了其主电路和控制电路的设计过程：最后,用Saber仿真和实验验证,结果表明,两相与单相反激变换器相比,具有输出功率大、输出电压和电感电流纹波小、本质安全特性更好等优点,同时,在同等输出条件下,采用交错并联的变换器能够减小体积,降低成本。
[Abstract]:If the DC power supply is applied to the dangerous environment such as coal and petrochemical industry, it must meet the requirement of not igniting the combustible material in the environment, in which the intrinsically safe (intrinsically safe) is a better explosion-proof method.Compared with the flameproof power supply, the intrinsically safe power supply can not only get smaller volume and lighter weight by removing the bulky shell, but also save the production cost and make the power supply have higher safety.Because of these advantages, it has a broad application prospect in coal mine, petrochemical and other fields.In this paper, the essential safety characteristics of intrinsically safe interleaved parallel flyback converters are studied, and the design of them is carried out, which will be applied to the mine intrinsically safe DC switching power supply.Firstly, on the basis of studying the working principle and inductance current of two-phase interleaved parallel flyback converter, the operating mode of two-phase interleaved parallel flyback converter is divided and the energy transfer process is analyzed. It is pointed out that there are three working modes of CCM DCM-CCM and DCM.Secondly, by studying the influence of input voltage of two-phase interleaving parallel flyback converter and the inductance of designed transformer on the output voltage ripple and the peak value of inductor current, the objective laws between them are summarized.At the same time, the essential safety characteristics of output and internal essential safety characteristics of two-phase interleaved parallel flyback converter are studied. The design process of main circuit and control circuit is given. Finally, the simulation and experiment results show that,Compared with the single-phase reverse converter, the two-phase converter has the advantages of large output power, small ripple of output voltage and inductor current, and better intrinsic safety characteristics. At the same time, under the same output conditions, the volume of the converter can be reduced by using interleaved parallel converters.Reduce costs.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM46

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