海洋电磁探测发射机可控源电路小信号建模

发布时间：2018-03-28 18:42

本文选题：海洋电磁探测发射机　切入点：可控源电路　出处：《北京工业大学学报》2016年05期

【摘要】：海洋电磁探测发射机通过向海底发射大功率变频的电磁波,来获取海底结构和矿产资源的分布规律,目前发射机存在效率低、发热严重等问题,为此采用软开关可控源电路来降低电路损耗.为了提高输出电磁波的瞬态性能,需建立可控源电路的数学模型,进行闭环控制.针对软开关可控源电路工作时状态多、直接建模困难问题,在硬开关可控源电路建模的基础上,通过分析输出滤波电感电流、变压器漏感、输入电压对软开关可控源电路占空比变化的影响,建立了软开关电路的小信号模型,最后通过仿真和实验验证了模型的正确性和有效性.
[Abstract]:The marine electromagnetic detection transmitter obtains the distribution law of seabed structure and mineral resources by sending high-power frequency conversion electromagnetic waves to the seabed. At present, the transmitter has some problems, such as low efficiency, serious heating and so on. In order to improve the transient performance of the output electromagnetic wave, the mathematical model of the controllable source circuit should be established and the closed-loop control should be carried out. In order to improve the transient performance of the output electromagnetic wave, the soft-switching controllable source circuit is used to reduce the circuit loss. On the basis of hard switching controllable source circuit modeling, the effects of output filter inductor current, transformer leakage inductance and input voltage on duty cycle of soft-switching controllable source circuit are analyzed. The small signal model of soft switching circuit is established, and the correctness and validity of the model are verified by simulation and experiment.
【作者单位】：北京工业大学电子信息与控制工程学院;河南理工大学电气工程与自动化学院;
【基金】：国家重大科研装备研制项目(ZDYZ2012-1-05-01)
【分类号】：TH763

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