【摘要】：由于煤礦井下的采掘工作面條件惡劣,通道狹窄、采掘高度低、大型設(shè)備難以下井、工具短缺,生產(chǎn)設(shè)備運輸、安裝、維護困難,因此要求生產(chǎn)設(shè)備必須滿足體積小、重量輕、系統(tǒng)故障率低、電磁干擾小、能耗少、系統(tǒng)成本低,以減小設(shè)備維護難度和生產(chǎn)成本。礦用隔爆型變頻調(diào)速一體式電動機由于具備軟啟動功能、系統(tǒng)故障率低、能耗低、系統(tǒng)維護成本小的優(yōu)點,完全滿足煤礦井下的需求。但是,在變頻器和電動機整合成一體式產(chǎn)品以后,在溫度設(shè)計上仍然存在一些難點。需要采用切實可行的設(shè)計方法來保證變頻一體機各部位的溫度在可接受范圍內(nèi)。然而,礦用隔爆型變頻一體機溫度計算方法的研究在國內(nèi)還是空白,有必要對礦用隔爆型變頻一體機的溫度計算方法進行深入研究。本文的目的是以3300V 1200kW礦用隔爆型變頻一體機為原型,研究變頻一體機的設(shè)計和各部位的溫度場有限元計算方法,而且盡量避開復(fù)雜、繁瑣的理論推導(dǎo)和大量的試驗室驗證,使其更適合在工廠內(nèi)推廣使用。本文以3300V 1200kW礦用隔爆型變頻一體機為原型,重點針對一體機的溫度場分析進行了研究,構(gòu)建了一體機冷卻結(jié)構(gòu),設(shè)計了其電動機模型、變頻器主電路結(jié)構(gòu),并對變頻電機的損耗、散熱系數(shù)和溫度場進行數(shù)字仿真。根據(jù)仿真結(jié)果與實驗數(shù)據(jù)的對比分析,可以發(fā)現(xiàn)最大實驗偏差僅為5.5℃,完全滿足工程需要,有力的驗證了仿真計算結(jié)果的可靠性。通過以上研究,證明了本文所建立的仿真模型及仿真分析的方法是可靠、可行的。根據(jù)樣機型式試驗結(jié)果,各觀察點實際測量溫度與上述方法分析計算得到的溫度值比較接近,試驗偏差均在可接受范圍內(nèi),證明該方法是可行、有效的。在新的設(shè)計方法出現(xiàn)以前,該方法對工廠內(nèi)的變頻一體機設(shè)計和溫度設(shè)計具有一定的參考價值。
[Abstract]:Because of the poor conditions, narrow passageways, low mining height, lack of tools, transportation, installation and maintenance of production equipment, the production equipment is required to be small in volume and light in weight, because of the poor conditions, narrow passageway, low mining height, difficult downhole of large equipment, lack of tools and difficult transportation, installation and maintenance of production equipment. The system failure rate is low, the electromagnetic interference is small, the energy consumption is low, and the system cost is low, in order to reduce the difficulty of equipment maintenance and production cost. Mine flameproof variable-frequency speed-regulating integrated motor has the advantages of soft start-up, low system failure rate, low energy consumption and low maintenance cost, which fully satisfies the underground demand of coal mine. However, after the integration of inverter and motor, there are still some difficulties in temperature design. A practical design method is needed to ensure that the temperature of all parts of the inverter is within acceptable range. However, the research on temperature calculation method of mine flameproof variable frequency one-in-one machine is still blank in China. It is necessary to study the temperature calculation method of mine flameproof variable-frequency all-in-one machine. The purpose of this paper is to take 3300V 1200kW flameproof variable frequency one-in-one machine as the prototype, to study the design of the variable-frequency one-in-one machine and the finite element calculation method of the temperature field in each part, and to avoid the complicated and tedious theoretical derivation and a lot of laboratory verification as far as possible. Make it more suitable for promotion in the factory. In this paper, based on 3300V 1200kW mine flameproof variable frequency integrated machine, the temperature field analysis of the integrated machine is studied, the cooling structure of the integrated machine is constructed, the motor model and the main circuit structure of the inverter are designed, the main circuit structure of the converter is designed, and the main circuit structure of the inverter is designed. The loss, heat dissipation coefficient and temperature field of the variable frequency motor are simulated. According to the comparison and analysis between the simulation results and the experimental data, it can be found that the maximum experimental deviation is only 5.5 鈩，

本文編號：2466766