本文選題：移相控制 + 脈寬調(diào)制技術(shù)　； 參考：《電子科技大學》2017年碩士論文

【摘要】：回旋器件是一種新型毫米波器件,具有高功率、寬頻帶等特點,它在毫米波雷達、通信及電子對抗、受控核聚變、微波能武器等方面有著十分廣泛的應用前景。隨著開關(guān)電源的拓撲結(jié)構(gòu)、軟開關(guān)技術(shù)、自動控制等理論與技術(shù)的不斷進步,以及固態(tài)大功率開關(guān)器件、磁性材料、控制技術(shù)等的不斷發(fā)展,大功率開關(guān)電源得以實現(xiàn)并被廣泛運用。在大功率高壓電源的研制中,開關(guān)電源技術(shù)和軟開關(guān)技術(shù)的引入使得大功率高壓電源的體積、重量不斷減小、功率密度不斷提高、數(shù)字化程度也越來越高。本文介紹了移相全橋PWM ZVS逆變技術(shù)在大功率回旋器件工作中的應用背景,設計并實現(xiàn)了基于移相控制軟開關(guān)的大功率高壓開關(guān)電源。本文首先講述了開關(guān)電源及相關(guān)技術(shù)的發(fā)展歷程和趨勢,以及軟開關(guān)技術(shù)和移相控制方式的相關(guān)理論。在分析了基本原理和比較了其優(yōu)缺點之后,闡明了移相全橋PWM ZVS逆變器在大功率移相全橋軟開關(guān)電源設計中的意義,并介紹了該電源系統(tǒng)在大功率回旋器件工作中的應用。其次介紹了基于輔助網(wǎng)絡的PWM ZVS逆變器的工作原理,全面分析了移相全橋PWM ZVS逆變器一個開關(guān)周期內(nèi)各個工作模態(tài)下的工作原理和等效電路結(jié)構(gòu)以及相應的電路方程;通過對諧振回路各器件參數(shù)的分析計算,得出了兩個不同橋臂上開關(guān)管死區(qū)時間的選取和實現(xiàn)零電壓開關(guān)的條件。最后基于對移相全橋PWM ZVS逆變器的理論分析,確定了一種大功率移相全橋軟開關(guān)電源的設計方案。并介紹了具體的設計步驟,通過增加輔助網(wǎng)絡幫助超前橋臂開關(guān)管和滯后橋臂開關(guān)管在實現(xiàn)了全范圍的ZVS。通過對移相控制芯片外圍電路和相應PID閉環(huán)控制回路的設計實現(xiàn)電壓輸出的穩(wěn)定性,通過增加相應的保護電路,使得逆變電路的可靠性得以提高。給出了主電路各元器件型號及參數(shù)選取的依據(jù),并依次進行仿真。最終給出了電源實驗平臺的測試波形,驗證了方案設計的可行性和參數(shù)選取的準確性。
[Abstract]:Gyrotron is a new type of millimeter wave device with high power, broadband characteristics in millimeter wave radar, communication and electronic warfare, controlled nuclear fusion, microwave energy has a very broad application prospects of weapons etc. with the switching power supply topology, soft switching technology, progress of the theory and technology of automatic control, magnetic materials and solid-state high power switching devices, the continuous development of control technology, high power switching power supply can be realized and widely used. In the development of large power and high voltage power supply, the switching power supply technology and soft switching technology makes the high voltage power supply volume, weight decreases, power density continuously improve the level of digital is more and more high. This paper introduces the application background of PWM phase shifted full bridge ZVS inverter technology in high power gyrotron devices, designed and implemented based on phase shift control High power high voltage soft switching power supply. This paper describes the development history and development trend of switching power supply and related technology, and the related theory of soft switching and phase shift control. After analyzing the basic principle and compare their advantages and disadvantages, expounds the significance of phase shifted full bridge PWM inverter in ZVS soft switching power supply design the power phase shifted full bridge, and introduces the application of the power supply system in high power gyrotron. The second introduces the working principle of ZVS inverter PWM auxiliary network based on a comprehensive analysis of the PWM phase shifted full bridge ZVS inverter in a switching cycle of each mode of the working principle and the equivalent circuit structure and circuit the corresponding equations; through the analysis of the parameters of resonant circuit of each device is calculated, the selection of dead time and zero voltage switch two different bridge arm. Conditions. Finally based on the analysis of phase shifted full bridge PWM inverter ZVS theory, determine the design scheme of a high power phase shifted full bridge soft switching power supply. And introduces the specific design steps, through the auxiliary network to help the leading leg switches and ZCS for the lagging arm in the realization of the full range of ZVS. by design of phase shift control chip peripheral circuits and the corresponding PID closed-loop control circuit to achieve stability by increasing the output voltage, corresponding protection circuit, the inverter circuit reliability can be improved. Given the selection of the main circuit of each component type and parameters, and makes simulation. Finally the test waveform power experimental platform are verified the accuracy and feasibility of the parameter selection scheme.

【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN86

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本文編號：1744098