發(fā)布時間：2018-03-28 18:42

  本文選題：海洋電磁探測發(fā)射機　切入點：可控源電路　出處：《北京工業(yè)大學學報》2016年05期

【摘要】：海洋電磁探測發(fā)射機通過向海底發(fā)射大功率變頻的電磁波,來獲取海底結構和礦產資源的分布規(guī)律,目前發(fā)射機存在效率低、發(fā)熱嚴重等問題,為此采用軟開關可控源電路來降低電路損耗.為了提高輸出電磁波的瞬態(tài)性能,需建立可控源電路的數學模型,進行閉環(huán)控制.針對軟開關可控源電路工作時狀態(tài)多、直接建模困難問題,在硬開關可控源電路建模的基礎上,通過分析輸出濾波電感電流、變壓器漏感、輸入電壓對軟開關可控源電路占空比變化的影響,建立了軟開關電路的小信號模型,最后通過仿真和實驗驗證了模型的正確性和有效性.
[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.
【作者單位】： 北京工業(yè)大學電子信息與控制工程學院;河南理工大學電氣工程與自動化學院;
【基金】：國家重大科研裝備研制項目(ZDYZ2012-1-05-01)
【分類號】：TH763

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