發(fā)布時間：2018-05-14 01:16

  本文選題：感應(yīng)加熱 + 串聯(lián)諧振��； 參考：《電子科技大學(xué)》2017年碩士論文

【摘要】：在現(xiàn)代工業(yè)加熱中,電磁感應(yīng)加熱一直是工件熱處理的核心技術(shù),故而成為該研究領(lǐng)域的重點。感應(yīng)加熱電源憑借其節(jié)能高效、安全穩(wěn)定可靠等特點,成為工業(yè)加熱的主要方式。隨著國家對節(jié)能環(huán)保的大力提倡,感應(yīng)加熱電源因其節(jié)能無污染等優(yōu)點被廣泛應(yīng)用,向著高可靠性低成本、高頻率智能化等方向不斷發(fā)展,對電路結(jié)構(gòu)與控制方式、開發(fā)周期等提出了新的需求,本文對感應(yīng)加熱電源進(jìn)行了研究與設(shè)計,主要工作如下:1.分析比較了各種主電路結(jié)構(gòu)與調(diào)功方式,選擇合適的方案并設(shè)計了主電路。選用了串聯(lián)諧振電路結(jié)構(gòu)與移相調(diào)功方式,根據(jù)主電路特點對其參數(shù)進(jìn)行了分析與計算,選取了合適的元器件,根據(jù)逆變電路特點,選取了合適的驅(qū)動芯片IR2110并設(shè)計了驅(qū)動電路,分析了阻抗匹配,對電磁干擾抑制與諧波防止進(jìn)行了總結(jié)。2.設(shè)計了移相調(diào)功與鎖相環(huán)復(fù)合的硬件控制電路。對移相調(diào)功電路、頻率跟蹤電路、相位補償、采樣電路、閉環(huán)控制進(jìn)行了分析與設(shè)計,為之后與軟件的協(xié)同控制提供了條件,并設(shè)計了保護(hù)電路,包括過壓過流保護(hù)電路,保證系統(tǒng)在出現(xiàn)異常時保護(hù)整個系統(tǒng)。3.對系統(tǒng)的軟件控制與觸摸顯示進(jìn)行了設(shè)計。分析了傳統(tǒng)PI與數(shù)字PI控制,并對數(shù)字PI控制進(jìn)行了改進(jìn),設(shè)計出適用于本文的分離PI-P算法,保證了調(diào)節(jié)速度與精度,實現(xiàn)了智能控制,設(shè)計了采樣程序并為系統(tǒng)加入了軟件保護(hù),可與硬件保護(hù)協(xié)同工作,對觸摸顯示屏進(jìn)行了設(shè)計,使其擁有友好的人機界面,操作更加便捷。4.對系統(tǒng)進(jìn)行了仿真驗證與調(diào)試測試。對電源系統(tǒng)進(jìn)行了搭建與仿真,驗證了方案正確性與合理性,并為調(diào)試與測試奠定了基礎(chǔ),對感應(yīng)電源系統(tǒng)進(jìn)行了調(diào)試,分別測試了移相波形,死區(qū)波形,負(fù)載電壓和電流波形,對波形進(jìn)行了分析與總結(jié),同時對調(diào)試過程中遇到的問題進(jìn)行了總結(jié),并記錄了測試數(shù)據(jù),驗證整個系統(tǒng)滿足設(shè)計要求。
[Abstract]:In modern industrial heating, electromagnetic induction heating has been the core technology of workpiece heat treatment, so it has become the focus of this research field. Induction heating power supply has become the main way of industrial heating because of its characteristics of energy saving, high efficiency, safety, stability and reliability. With the great promotion of energy saving and environmental protection in our country, induction heating power supply has been widely used for its advantages of energy saving and no pollution. It has been developing in the direction of high reliability and low cost, high frequency intelligence and so on. In this paper, the induction heating power supply is studied and designed. The main work is as follows: 1: 1. The main circuit structure and power regulation mode are analyzed and compared, the suitable scheme is selected and the main circuit is designed. The series resonant circuit structure and phase-shift power modulation mode are selected. The parameters are analyzed and calculated according to the characteristics of the main circuit, and the appropriate components are selected, according to the characteristics of the inverter circuit, The suitable driver chip IR2110 is selected and the driving circuit is designed. The impedance matching is analyzed and the electromagnetic interference suppression and harmonic prevention are summarized. The hardware control circuit of phase-shifting and phase-locked loop is designed. The phase shift power modulation circuit, frequency tracking circuit, phase compensation, sampling circuit and closed loop control are analyzed and designed, which provides the conditions for the subsequent collaborative control with the software, and designs the protection circuit, including the over-voltage and over-current protection circuit. To ensure that the system in case of an exception to protect the entire system. 3. The software control and touch display of the system are designed. The traditional Pi and digital Pi control are analyzed, and the digital Pi control is improved. A separate PI-P algorithm suitable for this paper is designed, which ensures the speed and precision of the adjustment, and realizes the intelligent control. The sampling program is designed and software protection is added to the system, which can work together with hardware protection. The touch display screen is designed to have a friendly man-machine interface, and the operation is more convenient. 4. The system is simulated and tested. The power supply system is built and simulated, which verifies the correctness and rationality of the scheme, and lays the foundation for debugging and testing. The phase shift waveform and dead zone waveform are tested respectively. The waveform of load voltage and current is analyzed and summarized. At the same time, the problems encountered in debugging are summarized, and the test data are recorded to verify that the whole system meets the design requirements.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN86

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