【摘要】：隨著電力電子技術(shù)在大功率應(yīng)用場合的不斷拓展與成熟,工業(yè)界對高功率、高可靠性的通用型半導(dǎo)體功率模塊單元的需求也與日俱增。當(dāng)前,絕緣柵門極晶體管(Insulated Gate Bipolar Translator, IGBT)在中、低壓大功率電力電子裝置中得到了廣泛的應(yīng)用。本文對具有高可靠性的基于多IGBT模塊并聯(lián)的數(shù)字化大功率電力電子集成模塊的若干關(guān)鍵技術(shù)進行了深入研究。 在總結(jié)了IGBT的相關(guān)基本特性的基礎(chǔ)上,本文研究了當(dāng)前基于IGBT并聯(lián)的高功率模塊單元的驅(qū)動與保護策略,并對其進行了分類、對比與總結(jié)。進而,旨在能夠?qū)崿F(xiàn)動態(tài)、靜態(tài)均流,過壓、短路以及過溫保護功能,設(shè)計了IGBT并聯(lián)的數(shù)字化驅(qū)動與保護方案。針對大功率變流器應(yīng)用中半導(dǎo)體器件關(guān)斷尖峰電壓較為嚴(yán)重的問題,在分析了關(guān)斷尖峰電壓產(chǎn)生原因的基礎(chǔ)上,提出了一種基于數(shù)字控制的關(guān)斷尖峰電壓抑制技術(shù)。相關(guān)實驗驗證了設(shè)計方法與技術(shù)的有效性。 常規(guī)功率模塊應(yīng)用中,連線數(shù)量隨著模塊數(shù)量增加而大幅增加,這不僅給實施帶來了難度,并且降低了系統(tǒng)的可靠性,為此,本文引入了環(huán)路通信的概念。設(shè)計了基于單光纖高速環(huán)路通信的主電路拓?fù)浣Y(jié)構(gòu)。基于此拓?fù)?確定了環(huán)路通信的通信協(xié)議,使其能夠滿足單光纖高速通信的需求。分析研究了正常通信模式與故障判斷與處理策略。對環(huán)路通信方式引入的通信延時進行了分析,并給出了通過軟件實現(xiàn)延時矯正與多模塊時間延時一致性的方法。通過以上各種手段,最終實現(xiàn)了具有較大潛在應(yīng)用價值、高可靠性的單光纖環(huán)路通信整體策略。實驗結(jié)果說明了此策略的可行性與實用性。 大功率變流器裝置的可靠運行關(guān)乎電力電子裝置能否在大功率場合成功應(yīng)用,可靠性問題一直是業(yè)界研究的重點與難點。本文對變流器裝置核心單元變流器模塊的電磁兼容性(Electro Magnetic Compatibility, EMC)問題進行了分析與設(shè)計。圍繞變流器模塊,對共模、差模干擾的干擾源、傳導(dǎo)路徑及干擾程度進行了分析。在此基礎(chǔ)上,對共模、差模干擾的抑制技術(shù)進行了分析與探討,以期能夠以較小的代價、最大限度的對干擾進行有效的抑制,提高其可靠性。仿真與實驗結(jié)果驗證了分析方法的正確性,運用此分析方法對工程實踐中干擾問題的解決說明了相關(guān)抑制技術(shù)的有效性。 最后,對大功率電力電子功率集成模塊(Power Electronic Building Block, PEBB)進行了試制,并將其運用到大功率電力電子裝置中。長時間的滿功率連續(xù)運行驗證了所制模塊具有較高的可靠性。對于更高的功率應(yīng)用場合,通常會對變流器裝置進行并聯(lián)應(yīng)用,本文對并聯(lián)系統(tǒng)進行了建模,研究了輸出電流一致性與各個相關(guān)因素之間的關(guān)系并據(jù)此給出了提高電流一致性、抑制環(huán)流的基本方法。實驗結(jié)果驗證了變流器模塊設(shè)計及并聯(lián)應(yīng)用電流一致性分析的正確性與有效性。
[Abstract]:With the development and maturity of power electronics technology in high-power applications, the demand for high-power, high-reliability general-purpose semiconductor power modules is increasing. At present, the insulated gate transistor (Insulated Gate Bipolar Translator, IGBT) has been widely used in low-voltage and high-power electronic devices. In this paper, some key technologies of high reliability digital high power electronic integration module based on parallel connection of multiple IGBT modules are studied. On the basis of summarizing the basic characteristics of IGBT, this paper studies the drive and protection strategy of high power module unit based on IGBT parallel connection, and classifies, compares and summarizes it. Furthermore, in order to realize the protection function of dynamic, static current sharing, overvoltage, short circuit and over-temperature protection, the digital drive and protection scheme of IGBT parallel connection is designed. In order to solve the serious problem of switching off peak voltage of semiconductor devices in the application of high power converters, a digital control technology of switching off peak voltage suppression is proposed on the basis of analyzing the causes of turn-off peak voltage. The effectiveness of the design method and technology is verified by relevant experiments. In the application of conventional power modules, the number of connections increases greatly with the increase of the number of modules, which not only brings difficulty to the implementation, but also reduces the reliability of the system. Therefore, the concept of loop communication is introduced in this paper. The main circuit topology based on single fiber high speed loop communication is designed. Based on this topology, the communication protocol of loop communication is determined to satisfy the demand of single fiber high speed communication. The normal communication mode and fault judgment and handling strategy are analyzed and studied. The communication delay introduced in the loop communication mode is analyzed, and the method to realize the consistency between the delay correction and the multi-module time delay through software is given. Finally, a single fiber loop communication strategy with great potential application value and high reliability is realized through the above methods. The experimental results show the feasibility and practicability of the strategy. The reliable operation of high-power converter devices is related to the successful application of power electronic devices in high-power applications. The reliability problem has always been the focus and difficulty of industry research. In this paper, the electromagnetic compatibility (Electro Magnetic Compatibility, EMC) problem of converter module is analyzed and designed. The interference source, conduction path and interference degree of common-mode and differential mode interference are analyzed around the converter module. On this basis, the common mode and differential mode interference suppression techniques are analyzed and discussed in order to effectively suppress interference at a lower cost and improve its reliability. The simulation and experimental results verify the correctness of the analysis method, and the effectiveness of the related suppression techniques is demonstrated by solving the interference problem in engineering practice. Finally, the high power integration module (Power Electronic Building Block, PEBB) is developed and applied to high power electronic devices. The reliability of the module is verified by long time full power continuous operation. For higher power applications, converters are usually applied in parallel. In this paper, the parallel system is modeled, and the relationship between output current consistency and various related factors is studied, and the improvement of current consistency is given. The basic method of restraining circulation. The experimental results verify the correctness and validity of the design of converter module and the analysis of current consistency in parallel applications.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2014
【分類號】：TM46

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本文編號：2286147