發(fā)布時(shí)間：2018-07-21 22:15

【摘要】：高功率脈沖驅(qū)動(dòng)源在民用和軍事領(lǐng)域具有廣泛的應(yīng)用價(jià)值,初級(jí)儲(chǔ)能充電系統(tǒng)作為高功率脈沖驅(qū)動(dòng)源的能量存儲(chǔ)和供給單元,是高功率脈沖驅(qū)動(dòng)源的核心部分。研究具有高輸出電壓、高能量效率、可重頻運(yùn)行的緊湊型初級(jí)儲(chǔ)能充電系統(tǒng)對(duì)高功率脈沖驅(qū)動(dòng)源技術(shù)的提高和應(yīng)用具有十分重要的意義。本文對(duì)空芯Tesla變壓器、主控晶閘管以及LC諧振充電裝置等進(jìn)行了深入的理論和實(shí)驗(yàn)研究,并在此基礎(chǔ)上成功研制了一臺(tái)緊湊型初級(jí)儲(chǔ)能充電系統(tǒng)。論文的主要工作和創(chuàng)新點(diǎn)有:1.采用直接電路法和等效電路法相結(jié)合的方法對(duì)空芯Tesla變壓器的諧振充電和負(fù)載放電過(guò)程進(jìn)行了準(zhǔn)確的理論分析�；�于該方法研制了一臺(tái)輸出電壓100kV,能量利用效率大于50%且能夠在重復(fù)頻率5 Hz條件下穩(wěn)定運(yùn)行的小型空芯Tesla變壓器。2.根據(jù)實(shí)際工作需求,設(shè)計(jì)了一套串并聯(lián)晶閘管組件作為初級(jí)儲(chǔ)能充電系統(tǒng)的主控開(kāi)關(guān)。對(duì)靜態(tài)均壓電阻的設(shè)計(jì)方法進(jìn)行了改進(jìn),達(dá)到了低功率損耗的目的。采用RC吸收回路和反向恢復(fù)電荷一致的晶閘管解決了晶閘管組件開(kāi)通過(guò)電壓和反向尖峰電壓分配不均勻的問(wèn)題。研制了一套緊湊型觸發(fā)控制系統(tǒng),并對(duì)觸發(fā)控制系統(tǒng)和晶閘管組件的輸出性能進(jìn)行了研究。結(jié)果表明:該晶閘管組件作為初級(jí)儲(chǔ)能充電系統(tǒng)的主控開(kāi)關(guān)能夠在高電壓、大電流條件下安全穩(wěn)定運(yùn)行。3.建立了一套可以在能量補(bǔ)充電容工作電壓變化的情況下分析LC諧振充電裝置的近似分析方法。基于該方法優(yōu)化設(shè)計(jì)了一臺(tái)緊湊型LC諧振充電裝置。該裝置可以將初級(jí)儲(chǔ)能電容器連續(xù)4次充電至4.5 kV,且能量利用效率大于90%。4.將空芯Tesla變壓器、主控晶閘管以及LC諧振充電裝置三個(gè)關(guān)鍵部分進(jìn)行組裝,研制了一臺(tái)緊湊型初級(jí)儲(chǔ)能充電系統(tǒng)。該系統(tǒng)采用繼電器隔離的方法解決了氣體火花開(kāi)關(guān)強(qiáng)電磁輻射造成的充電晶閘管和回收晶閘管的誤觸發(fā)問(wèn)題。通過(guò)實(shí)驗(yàn)測(cè)試詳細(xì)研究了初級(jí)儲(chǔ)能充電系統(tǒng)的輸出特性。結(jié)果表明:初級(jí)儲(chǔ)能充電系統(tǒng)的輸出電壓為100 kV,重復(fù)運(yùn)行頻率為5 Hz,脈沖個(gè)數(shù)為5個(gè),能量利用效率大于45%,達(dá)到了預(yù)期設(shè)計(jì)要求。
[Abstract]:The high power pulse drive source has wide application value in civil and military fields. As the energy storage and supply unit of the high power pulse drive source, the primary energy storage charge system is the core part of the high power pulse drive source. The study of compact primary energy storage charging system with high output voltage, high energy efficiency and repeatable operation is of great significance to the improvement and application of high power pulse drive source technology. In this paper, the theoretical and experimental research on the hollow Tesla transformer, the main thyristor and the LC resonant charging device is carried out. On this basis, a compact primary energy storage charging system is successfully developed. The main work and innovation of the paper are: 1. The direct circuit method and equivalent circuit method are used to analyze the resonant charging and load discharge process of hollow Tesla transformer. Based on this method, a small empty-core Tesla transformer with 100kV output voltage, energy utilization efficiency of more than 50% and stable operation at a repetition rate of 5 Hz has been developed. According to the practical requirements, a series and parallel thyristor assembly is designed as the main control switch of the primary energy storage charging system. The design method of static voltage-sharing resistance is improved to achieve the purpose of low power loss. A thyristor with the same RC absorption circuit and reverse recovery charge is used to solve the problem of over-voltage and non-uniform distribution of reverse spike voltage in the thyristor assembly. A compact trigger control system is developed, and the output performance of the trigger control system and thyristor assembly is studied. The results show that the thyristor assembly can operate safely and stably at high voltage and high current as the main control switch of the primary energy storage charging system. An approximate analysis method for LC resonant charging device is established, which can be used to analyze LC resonant charging device under the condition of the change of the working voltage of the energy supply capacitor. Based on this method, a compact LC resonant charging device is designed. The device can charge the primary energy storage capacitor to 4.5 kV for 4 times in a row, and the energy utilization efficiency is more than 90 kV. A compact primary energy storage charging system was developed by assembling three key parts of the hollow Tesla transformer, the main thyristor and the LC resonant charging device. The system adopts the method of relay isolation to solve the problem of charging thyristor and recovering thyristor caused by the strong electromagnetic radiation of gas spark switch. The output characteristics of primary energy storage charging system are studied in detail by experimental test. The results show that the output voltage of the primary energy storage charging system is 100 kV, the repetition rate is 5 Hz, the number of pulses is 5, and the energy utilization efficiency is more than 45, which meets the expected design requirements.
【學(xué)位授予單位】：國(guó)防科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：TN78;TM910.6

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