本文選題：交流接觸器 + 電磁機(jī)構(gòu)��； 參考：《沈陽工業(yè)大學(xué)》2017年碩士論文

【摘要】：隨著全世界對能源需求的高速增長,風(fēng)能的開發(fā)與利用成為了焦點(diǎn),近年來風(fēng)力發(fā)電在電網(wǎng)系統(tǒng)中比例不斷攀升,規(guī)模不斷增加,逐漸出現(xiàn)了風(fēng)力發(fā)電機(jī)組運(yùn)行可靠性的問題。交流接觸器在風(fēng)力發(fā)電系統(tǒng)中主要起控制的作用,其可靠性將直接關(guān)系到風(fēng)力發(fā)電系統(tǒng)的運(yùn)行可靠性。風(fēng)力發(fā)電系統(tǒng)要求交流接觸器具有較高的電壽命和可靠性,其電磁機(jī)構(gòu)在分閘和合閘的操作過程中,具有較快的分閘速度、合閘速度以及較高的輸出功。因此,研究風(fēng)力發(fā)電系統(tǒng)專用的交流接觸器,提高其對風(fēng)力發(fā)電系統(tǒng)的匹配性,對于提高風(fēng)力發(fā)電系統(tǒng)運(yùn)行的可靠性至關(guān)重要。本文根據(jù)風(fēng)力發(fā)電系統(tǒng)對于交流接觸器的要求,通過分析現(xiàn)有電磁機(jī)構(gòu)的優(yōu)點(diǎn)與不足,提出了一種新型的雙穩(wěn)態(tài)電磁機(jī)構(gòu)。通過運(yùn)用電磁學(xué)理論與經(jīng)驗公式,對電磁機(jī)構(gòu)進(jìn)行初步設(shè)計與計算,確定其基本參數(shù),并對其控制電路進(jìn)行設(shè)計,實現(xiàn)低電壓穿越的功能。利用Ansoft有限元分析軟件對所設(shè)計結(jié)構(gòu)分別進(jìn)行靜磁場和瞬態(tài)磁場的仿真分析。通過對靜磁場進(jìn)行分析,得到電磁機(jī)構(gòu)的靜態(tài)吸反力特性曲線和電磁回路的磁場分布圖,由此通過調(diào)整,改進(jìn)設(shè)計結(jié)構(gòu)的尺寸參數(shù)�；陟o磁場態(tài)模型,通過添加外電路,設(shè)置線圈匝數(shù)等參數(shù),建立設(shè)計結(jié)構(gòu)的瞬態(tài)磁場仿真模型。通過分別對設(shè)計結(jié)構(gòu)合閘和分閘過程進(jìn)行仿真分析,得到相應(yīng)的速度特性、位移特性、電流特性等動態(tài)特性曲線。通過分析各參數(shù)對電磁機(jī)構(gòu)動態(tài)特性的影響,對設(shè)計結(jié)構(gòu)進(jìn)行改進(jìn),確定各部分尺寸參數(shù)。通過對比特性參數(shù)與設(shè)計參數(shù)要求,驗證設(shè)計機(jī)構(gòu)的合理性。
[Abstract]:With the rapid growth of energy demand in the world, the development and utilization of wind energy has become the focus. In recent years, the proportion of wind power generation in the power grid system is increasing, the scale of wind power generation is increasing, and the problem of operational reliability of wind turbine has appeared gradually. Ac contactor plays a controlling role in wind power system, and its reliability is directly related to the operational reliability of wind power system. The AC contactor is required to have high electrical life and reliability in wind power generation system, and its electromagnetic mechanism has higher opening speed, closing speed and higher output power in the operation process of opening and closing. Therefore, it is very important to study the special AC contactor of wind power system and improve its matching ability to improve the reliability of wind power system. According to the requirement of AC contactor in wind power generation system, a new bistable electromagnetic mechanism is proposed by analyzing the advantages and disadvantages of the existing electromagnetic mechanism. By using the theory of electromagnetism and empirical formula, the primary design and calculation of electromagnetic mechanism are carried out, the basic parameters are determined, and its control circuit is designed to realize the function of low voltage traversing. The static magnetic field and transient magnetic field of the designed structure are simulated by Ansoft finite element analysis software. Through the analysis of the static magnetic field, the characteristic curve of the static absorbing reaction force of the electromagnetic mechanism and the magnetic field distribution diagram of the electromagnetic circuit are obtained, and the dimension parameters of the design structure are improved by adjusting the magnetic field. Based on the static magnetic field model, the transient magnetic field simulation model of the design structure is established by adding the external circuit and setting the number of coil turns. Through the simulation and analysis of the closing and closing process of the design structure, the corresponding dynamic characteristic curves such as velocity characteristic, displacement characteristic, current characteristic and so on are obtained. By analyzing the influence of the parameters on the dynamic characteristics of the electromagnetic mechanism, the design structure is improved and the dimension parameters of each part are determined. The rationality of the design mechanism is verified by comparing the characteristic parameters with the design parameters.
【學(xué)位授予單位】：沈陽工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM572.2;TM614

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