發(fā)布時間：2018-05-08 15:18

  本文選題：無位置傳感器 + 滑模觀測器�。� 參考：《大連海事大學(xué)》2015年碩士論文

【摘要】：近年來,隨著現(xiàn)代電力電子技術(shù)、現(xiàn)代控制理論以及永磁材料的飛速發(fā)展,永磁容錯電機以其高效性,高可靠性等許多優(yōu)點,在電氣傳動系統(tǒng)中的應(yīng)用受到越來越大的關(guān)注。為了增加系統(tǒng)的可靠性以及降低成本,永磁容錯電機的無位置傳感器控制技術(shù)成為電機控制技術(shù)的研究熱點。無位置傳感器永磁容錯電機控制系統(tǒng)具有結(jié)構(gòu)簡單、運行效率高、體積小以及可以用于一些特殊場合的特點。因此,研究基于無位置傳感器的永磁容錯電機矢量控制技術(shù),具有較大的學(xué)術(shù)價值和廣闊的應(yīng)用前景。本文在閱讀了大量國內(nèi)外文獻的基礎(chǔ)上首先介紹了永磁容錯電機的結(jié)構(gòu)和特點,建立了三相永磁容錯電機在不同坐標系下的數(shù)學(xué)模型。分析了滑模變結(jié)構(gòu)基本原理,結(jié)合永磁容錯電機的數(shù)學(xué)模型研究了基于滑膜觀測器的轉(zhuǎn)子位置和轉(zhuǎn)速估計算法。為了解決滑膜觀測器抖振問題,對滑膜觀測器進行了改進,提高了滑膜觀測器對轉(zhuǎn)子位置和轉(zhuǎn)速的估算精度。通過分析三相永磁容錯電機的空間電壓矢量分布,設(shè)計了基于SVPWM控制技術(shù)的三相永磁容錯電機無位置傳感器矢量控制系統(tǒng)。針對永磁容錯電機的特點,提出了繞組開路短路故障情況下的三相永磁容錯電機容錯控制策略,并設(shè)計了繞組故障時的三相永磁容錯電機矢量控制系統(tǒng)。最后,根據(jù)設(shè)計的三相永磁容錯電機無位置傳感器矢量控制系統(tǒng),搭建了系統(tǒng)仿真模型,并對無故障和繞組開路短路故障情況下的三相永磁容錯電機無位置傳感器矢量控制系統(tǒng)進行了仿真。仿真結(jié)果驗證了本文所提出的三相永磁容錯電機無位置傳感器矢量控制系統(tǒng)的有效性。
[Abstract]:In recent years, with the rapid development of modern power electronics technology, modern control theory and permanent magnet materials, the application of permanent magnet fault-tolerant motor in electrical transmission system has attracted more and more attention because of its high efficiency and high reliability. In order to increase the reliability of the system and reduce the cost, the position sensorless control technology of permanent magnet fault-tolerant motor has become the research hotspot of motor control technology. The position sensorless permanent magnet fault-tolerant motor control system has the advantages of simple structure, high running efficiency, small size and can be used in some special occasions. Therefore, it is of great academic value and wide application prospect to study the vector control technology of permanent magnet fault-tolerant motor based on position sensor. This paper first introduces the structure and characteristics of permanent magnet fault-tolerant motor, and establishes the mathematical model of three-phase permanent magnet fault-tolerant motor in different coordinate system. The basic principle of sliding mode variable structure is analyzed, and the rotor position and speed estimation algorithm based on synovial observer is studied based on the mathematical model of permanent magnet fault-tolerant motor. In order to solve the chattering problem of synovial observer, the synovial observer is improved to improve the accuracy of rotor position and speed estimation. Based on the analysis of space voltage vector distribution of three phase permanent magnet fault tolerant motor, a position sensorless vector control system of three phase permanent magnet fault tolerant motor based on SVPWM control technology is designed. According to the characteristics of permanent magnet fault-tolerant motor, a fault tolerant control strategy for three-phase permanent magnet fault-tolerant motor with winding open circuit fault is proposed, and a vector control system for three-phase permanent magnet fault-tolerant motor is designed. Finally, according to the position sensorless vector control system of the three-phase permanent magnet fault-tolerant motor, the simulation model of the system is built. The position sensorless vector control system of three phase permanent magnet fault tolerant motor is simulated. The simulation results verify the effectiveness of the position sensorless vector control system proposed in this paper.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM351

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本文編號：1861920