本文選題：永磁同步電動(dòng)機(jī) + 三相容錯(cuò)逆變器��； 參考：《濟(jì)南大學(xué)》2017年碩士論文

【摘要】：永磁同步電動(dòng)機(jī)(Permanent Magnet Synchronous Motor,簡(jiǎn)稱PMSM)具有體積小、效率高、功率密度大、調(diào)速范圍寬及動(dòng)態(tài)響應(yīng)速度快的特點(diǎn),因而在交通行業(yè)、工商行業(yè)等領(lǐng)域的應(yīng)用越來越廣泛。隨著其應(yīng)用行業(yè)的擴(kuò)展,特別是在一些至關(guān)重要的場(chǎng)合,PMSM驅(qū)動(dòng)系統(tǒng)的安全可靠性受到越來越多的重視。PMSM矢量控制系統(tǒng)采用逆變器提供驅(qū)動(dòng)電流,由于電力電子器件自身的脆弱性,可能會(huì)導(dǎo)致逆變器故障的時(shí)常發(fā)生�？刂葡到y(tǒng)會(huì)把逆變器與電動(dòng)機(jī)當(dāng)作一個(gè)統(tǒng)一的整體進(jìn)行控制,當(dāng)逆變器出現(xiàn)故障時(shí)表示出整個(gè)速度控制系統(tǒng)失去了運(yùn)行能力,正因如此對(duì)逆變器故障時(shí)控制系統(tǒng)的容錯(cuò)運(yùn)行方式進(jìn)行深入研究很有必要。本文首先在閱讀文獻(xiàn)和資料的基礎(chǔ)上,對(duì)經(jīng)常出現(xiàn)的逆變器故障類型進(jìn)行了分析,總結(jié)了故障產(chǎn)生的特點(diǎn),并設(shè)計(jì)了相應(yīng)的容錯(cuò)控制策略。其次,調(diào)研芯片廠商的技術(shù)文檔并設(shè)計(jì)了PMSM容錯(cuò)控制系統(tǒng)的軟硬件。最后在實(shí)驗(yàn)平臺(tái)上進(jìn)行了實(shí)現(xiàn),獲得了良好的控制性能。本文完成的主要工作如下:第一,建立PMSM的數(shù)學(xué)模型,并分別在三相靜止坐標(biāo)系、αβ靜止坐標(biāo)系、dq旋轉(zhuǎn)坐標(biāo)系下對(duì)定子電壓、電流以及磁鏈方程的模型進(jìn)行分析,研究了以坐標(biāo)變換為基礎(chǔ)的PMSM的矢量控制以及空間電壓矢量調(diào)制。第二,研究了逆變器故障下的數(shù)學(xué)模型,針對(duì)PMSM驅(qū)動(dòng)系統(tǒng)單相故障設(shè)計(jì)了基于四開關(guān)逆變器的容錯(cuò)控制策略,對(duì)相電壓在開關(guān)管不同開關(guān)情況下進(jìn)行推導(dǎo),重新定義了三相四開關(guān)下的空間電壓矢量,并推導(dǎo)出新的開關(guān)表,采用電容補(bǔ)償方案優(yōu)化了系統(tǒng)性能,最后對(duì)系統(tǒng)從三相六開關(guān)到三相四開關(guān)的切換運(yùn)行進(jìn)行了實(shí)驗(yàn)研究,并用Matlab對(duì)運(yùn)行方式進(jìn)行了仿真,驗(yàn)證系統(tǒng)可行性。第三,分析了不同控制器的實(shí)現(xiàn)方法,根據(jù)各種方法的優(yōu)缺點(diǎn),確定了基于容錯(cuò)逆變器的PMSM控制器的實(shí)現(xiàn)方案,并根據(jù)方案對(duì)控制器進(jìn)行了軟硬件設(shè)計(jì),在所搭建的實(shí)驗(yàn)平臺(tái)上進(jìn)行試驗(yàn),對(duì)控制器整體進(jìn)行了調(diào)試,在逆變器處于正常運(yùn)行和故障運(yùn)行的情況下對(duì)控制器進(jìn)行試驗(yàn),并得到相應(yīng)的數(shù)據(jù),證明了本文的控制方案在實(shí)際應(yīng)用中有一定的可行性。
[Abstract]:Permanent Magnet synchronous Motor (PMSM) is widely used in transportation industry, industry and commerce because of its small size, high efficiency, high power density, wide speed range and fast dynamic response. With the expansion of its application industry, especially in some important occasions, the safety and reliability of PMSM drive system has been paid more and more attention. PMSM vector control system uses inverter to provide driving current. Because of the vulnerability of power electronic devices, inverter faults may occur frequently. The control system controls the inverter and the motor as a unified whole. When the inverter fails, it shows that the whole speed control system has lost its running capability. Therefore, it is necessary to study the fault-tolerant operation mode of inverter fault control system. In this paper, based on the literature and data, the common fault types of inverter are analyzed, the characteristics of fault generation are summarized, and the corresponding fault-tolerant control strategy is designed. Secondly, the software and hardware of PMSM fault-tolerant control system are designed. Finally, it is implemented on the experimental platform, and good control performance is obtained. The main work of this paper is as follows: first, the mathematical model of PMSM is established, and the stator voltage, current and flux chain equations are analyzed in three-phase stationary coordinate system and 偽 尾 stationary coordinate system in DQ rotating coordinate system. The vector control and space voltage vector modulation of PMSM based on coordinate transformation are studied. Secondly, the mathematical model of inverter fault is studied. The fault-tolerant control strategy based on four-switch inverter is designed for single-phase fault of PMSM drive system, and the phase voltage is deduced under different switching conditions. The space voltage vector under three-phase four-switch is redefined, and a new switching table is deduced. The performance of the system is optimized by using capacitive compensation scheme. Finally, the switching operation of the system from three-phase six-switch to three-phase four-switch is studied experimentally. The operation mode is simulated with Matlab to verify the feasibility of the system. Thirdly, the realization methods of different controllers are analyzed. According to the advantages and disadvantages of various methods, the implementation scheme of PMSM controller based on fault-tolerant inverter is determined, and the hardware and software of the controller are designed according to the scheme. The whole controller is debugged on the experimental platform, and the controller is tested under the condition that the inverter is in normal operation and fault operation, and the corresponding data are obtained. It is proved that the control scheme in this paper is feasible in practical application.
【學(xué)位授予單位】：濟(jì)南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM341;TM464

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本文編號(hào)：1823877