本文選題：高壓開關電源 + 高頻變壓器�。� 參考：《武漢理工大學》2014年碩士論文

【摘要】：高壓電源在工業(yè)、農業(yè)、軍事等領域有著廣泛的用途，特別是在電力行業(yè)的絕緣測試方面起著重要作用。以往的高壓電源具有電能利用率低，體積大，操作維修不便等缺點。隨著開關電源技術的快速發(fā)展，高壓電源領域也正在逐步采用開關電源技術。開關電源技術在高壓電源領域的普遍應用將有效提升高壓電源的性能。 論文介紹了國內外開關電源的現(xiàn)狀及發(fā)展趨勢，對開關電源的控制方式及主電路拓撲等進行了深入的研究與分析，并在此基礎上提出來5kV高壓開關電源的總體技術方案，設計了一款基于微控制器和脈寬調制（PWM）技術的高壓開關電源。該高壓開關電源采用單端反激式主電路拓撲結構，由微控器控制脈寬調制芯片TL494產生高頻脈沖，，經高頻變壓器輸出0～5kV連續(xù)可調電壓。整個高壓開關電源系統(tǒng)的硬件電路主要分為5個部分，其中包括調壓穩(wěn)壓電路、升壓電路、高頻變壓器、采樣反饋電路和系統(tǒng)保護電路。其中高頻變壓器是設計的重點，論文采用輸出功率表格法選擇高頻變壓器磁芯，結合經驗公式使之達到設計要求，對提高整個高壓開關電源的性能起到重要作用。 采用功能強大的微處理器構成高壓開關電源中的控制系統(tǒng)，結合A/D轉換電路和D/A轉換電路，組成具有完善控制和保護功能的高壓開關電源系統(tǒng)。其中主要完成數(shù)據信息的采集和處理，利用轉換后的數(shù)字量信號完成對整個電源系統(tǒng)的控制以及實現(xiàn)鍵盤錄入、液晶顯示等，具有良好的人機對話功能。 仿真和調試結果表明論文所設計的高壓開關電源提高了電源的穩(wěn)定性和降低了功率損耗，滿足設計要求。該電源采用模擬電路與數(shù)字電路相互配合的方案，構成閉環(huán)實時監(jiān)控系統(tǒng)，具有可靠性高、調壓范圍寬、控制性能好等優(yōu)點。
[Abstract]:High voltage power supply is widely used in industrial, agricultural, military and other fields, especially in the insulation testing of electric power industry. The past high voltage power supply has the disadvantages of low power utilization, large volume, inconvenient operation and maintenance. With the rapid development of switching power technology, the field of high voltage power supply is also gradually using switch Power supply technology. The application of switching power supply technology in the field of high-voltage power supply will effectively enhance the performance of high voltage power supply.
This paper introduces the current situation and development trend of switching power supply at home and abroad, studies and analyses the control mode and main circuit topology of the switching power supply. On this basis, the general technical scheme of the 5kV high voltage switching power supply is proposed, and a high voltage switching power supply based on the micro controller and the pulse width modulation (PWM) technology is designed. The high voltage switching power supply adopts the single end flyback main circuit topology, which generates high frequency pulse by the micro controller TL494 pulse width modulation chip, and output 0 to 5kV continuous adjustable voltage through high frequency transformer. The hardware circuit of the whole high voltage switching power supply system is divided into 5 parts, including voltage regulation circuit, boost circuit and high frequency voltage variable voltage circuit. The high frequency transformer is the key point of the design. The paper selects the high frequency transformer core by the output power form method, and makes it meet the design requirements with the empirical formula. It plays an important role in improving the performance of the high voltage switching power supply.
Using a powerful microprocessor to form a control system in a high voltage switching power supply, combined with the A/D conversion circuit and the D/A conversion circuit, a high voltage switching power supply system with perfect control and protection functions is composed, which mainly completes the collection and processing of data information, and completes the control of the whole power supply system by using the converted digital signal. System and keyboard input, LCD display, etc., has a good man-machine conversation function.
The simulation and debugging results show that the high voltage switching power supply designed in this paper improves the stability of the power supply and reduces the power loss, and meets the design requirements. The power supply adopts the scheme of analog and digital circuits to form a closed loop real-time monitoring system, which has the advantages of high reliability, wide range of voltage regulation and good control performance.
【學位授予單位】：武漢理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN86

【參考文獻】

相關期刊論文 前10條

1 楊鵬;郭世明;;便攜式絕緣電阻測試儀用高壓直流電源設計[J];電源技術應用;2003年10期

2 夏凌輝;呂征宇;費萬民;;大功率裝置用多路輸出高壓隔離新型開關電源設計[J];電源技術應用;2003年12期

3 白炳良;周慰君;;基于TL494開關電源的設計[J];大學物理實驗;2009年02期

4 馬渝本;楊青;王文東;;15kW IGBT高壓開關電源[J];電源世界;2004年02期

5 趙建統(tǒng);薛紅兵;梁樹坤;;淺談電源產業(yè)及電源技術的發(fā)展趨勢[J];電源世界;2007年02期

6 張文利 ,彭燕昌 ,孫廣平 ,嚴萍 ,張適昌;高壓開關電源的研制[J];高電壓技術;2002年11期

7 陳分雄,王典洪,張承志;基于單片機的帶同步鎖相逆變器控制[J];四川理工學院學報(自然科學版);2005年02期

8 沈昂;;大功率電源MOS管的特性及應用[J];上海計量測試;2005年06期

9 胡同;王京梅;蘭中文;;1.5MHz高頻開關電源變壓器的設計方法[J];通信電源技術;2006年02期

10 王亞君;TL494及其在半橋變換開關電源中的應用[J];現(xiàn)代電子技術;2004年06期

本文編號：2102189