高功率脈沖驅(qū)動源的初級儲能充電系統(tǒng)及其關(guān)鍵技術(shù)研究
[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】:國防科學(xué)技術(shù)大學(xué)
【學(xué)位級別】:博士
【學(xué)位授予年份】:2016
【分類號】:TN78;TM910.6
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