本文關(guān)鍵詞：交流傳動(dòng)電力機(jī)車變流器與車載電氣設(shè)備相互影響的研究，由筆耕文化傳播整理發(fā)布。

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交流傳動(dòng)電力機(jī)車變流器與車載電氣設(shè)備相互影響的研究

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【中文摘要】隨著高速鐵路的快速發(fā)展,交流傳動(dòng)技術(shù)已成為當(dāng)今世界上牽引動(dòng)力高新技術(shù)的標(biāo)志,也是我國(guó)鐵路牽引動(dòng)力今后發(fā)展的主要方向。作為交流傳動(dòng)電力機(jī)車電傳動(dòng)系統(tǒng)的核心子系統(tǒng)之一,網(wǎng)側(cè)變流系統(tǒng)要保證直流中間環(huán)節(jié)的電壓恒定,交流電網(wǎng)側(cè)功率因數(shù)接近1,還要使電網(wǎng)電流盡量接近正弦,其運(yùn)行狀況直接影響到電傳動(dòng)系統(tǒng)的穩(wěn)定。同時(shí),變頻調(diào)速牽引電機(jī)盡緣也直接影響機(jī)車運(yùn)行的穩(wěn)定性和可靠性。本文對(duì)交流傳動(dòng)機(jī)車變流器與車載電氣設(shè)備相互影響進(jìn)行了研究。首先,在Matlab/simulink環(huán)境下構(gòu)建了交流傳動(dòng)電力機(jī)車網(wǎng)側(cè)變流系統(tǒng)。整流器采用4重PWM整流器,直流側(cè)負(fù)載用等效電阻代替,控制方法采用瞬態(tài)電流控制。通過(guò)與實(shí)測(cè)數(shù)據(jù)對(duì)比表明,仿真系統(tǒng)能夠很好反應(yīng)變流器的實(shí)際工作情況。本文研究了變壓器繞組漏感和互感對(duì)PWM整流器性能的影響�；跐M足瞬態(tài)電流跟蹤指標(biāo),最大調(diào)制比限制并考慮接觸網(wǎng)電壓波動(dòng),本文提出了一種確定交流側(cè)電感的綜合設(shè)計(jì)方法,并用仿真驗(yàn)證了此方法的正確性。仿真顯示,隨著繞組互感的增大,牽引繞組電流的波動(dòng)增大,繞組諧波含量增加。本文計(jì)算了諧波條件下機(jī)車主變壓器的銅耗以及鐵耗,利用ANSOFF軟件分析了鐵心硅鋼片的渦流特性,用有限元分析的方法計(jì)算了機(jī)車主變壓器鐵心進(jìn)損耗功率。最后,利用一種高壓脈沖方波盡緣老化試驗(yàn)系統(tǒng)模擬變頻器對(duì)變頻調(diào)速牽引電機(jī)定子繞組盡緣老化作用,以聚酰亞胺薄膜為試驗(yàn)對(duì)象,研究了脈沖方波幅值、頻率對(duì)盡緣壽命的影響,提出了脈沖方波下盡緣材料的電老化壽命模型。本文的研究可為四象限變流器和變壓器的優(yōu)化設(shè)計(jì)提供了理論依據(jù)。同時(shí),為變頻調(diào)速牽引電機(jī)盡緣的破壞機(jī)理打下了良好的基礎(chǔ)。');
【Abstract】 With high speed railways developed rapidly around the world, AC drive technology becomes the symbol of the world\'s high-tech traction power as well as the main developmental direction of China\'s railway traction in the future. As a core subsystem of AC drive system for electric locomotive, line side converter system takes charge of maintaining voltage stability of middle DC link, suppressing harmonic wave of AC side by *** AC current as a sine wave, *** power factor approach 1, the working condition of which is vital to the performance of drive system. Meanwhile, the insulation of traction motor has direct impact on the stability and reliability of electric locomotive. Interaction between converters and on-board electrical equipments for AC drive locomotive is studied in the theis.Firstly, simulation model of line side converter system for AC drive locomotives is built by utilizing Matlab/simulink. The coverter is quadruple PWM rectifier with the strategy of transient current control, and the DC load is simulated by a resistance. Compared with measured data, the simulation model can simulate the working condition of converter.Secondly, the influence of transformer leakage inductance and mutual inductance between windings to the performance of four-quadrant converter (4QC) is researched. To meet the performance of current tracing, limit of the maximal modulation ratio and fluctuation of catenary voltage, an integrated scheme is put forward to design the inductance parameter of AC line for 4QC. Furthermore, the results of simulation verify the feasibility and correctness of the proposed method. And it is indicated that harmonic currents of windings will increase with enlargement of winding current fluctuation when mutual inductance between windings increases.Thirdly, the copper loss and iron loss of locomotive transformer in harmonics condition is calculated. Moreover, by utilizing ANSOFT, the swirl characteristics of silicon steel sheet is analyzed, and iron loss of transformer is calculated with finite element method.Last but not least, in order to test insulation properties under continuous impulses, a new insulation aging test system is used to simulate the aging effect of converter on the winding insulation in the inverter-fed motors. The influence of impulse amplitude and frequency on insulation lifetime is investigated by using polyimide film as experimental material. Finally, an insulation electrical aging lifetime model is proposed.Research in the thesis provides theoretical basis for 4QC and transformer optimization design. At the same time, it\'s also the basis of further research on insulation failure mechanism of insulation material for traction motor.

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  本文關(guān)鍵詞：交流傳動(dòng)電力機(jī)車變流器與車載電氣設(shè)備相互影響的研究，由筆耕文化傳播整理發(fā)布。