According to the theory of electromagnetic fields and temperature fields , the distribution of electromagnetic fields and temperature fields of the large salient synchronous generator with fractional stator slot are calculated and analyzed by the finite element method ( fem ) in this paper 本文根據(jù)電磁場(chǎng)理論,從耦合場(chǎng)的弱耦合角度首先計(jì)算了定子具有分?jǐn)?shù)槽繞組的大型水輪發(fā)電機(jī)的電磁場(chǎng),并分析了電磁場(chǎng)和溫度場(chǎng)的耦合關(guān)系,進(jìn)而得出電機(jī)內(nèi)的溫度分布。
According to the theory of electromagnetic fields , the large salient synchronous generator with fractional stator slot are calculated and analyzed by the finite element method ( fem ) in this paper . the fourier analysis method is applied to decompose the air gap magnetic density into the basic spatial component and a series of harmonic components and wave shape eigen coefficient of air gap magnetic field are calculated 本文根據(jù)電磁場(chǎng)理論,從耦合場(chǎng)的弱耦合角度首先計(jì)算了定子具有分?jǐn)?shù)槽繞組的大型水輪發(fā)電機(jī)的電磁場(chǎng),采用付立葉諧波分析的方法把氣隙磁密分解為空間基波和一系列諧波,進(jìn)而計(jì)算出氣隙磁場(chǎng)波形特征系數(shù)。
Firstly , considering the molecular pump is small and the elimination of heat condition is bad , this paper presents the structure of the mb , including the material of the rotor and stator , the number of magnetic poles , the stator slot shape of mb , the layout of the magnetic poles , the coins winding and so on 首先綜合考慮了分子泵體積小、磁軸承散熱條件不好的特點(diǎn),設(shè)計(jì)了分子泵磁懸浮軸承的結(jié)構(gòu),選擇了軸承鐵芯的材料,設(shè)計(jì)了磁極的布置、槽的形狀、磁極數(shù)目和線圈纏繞方式。
Considering the influence of damping winding and if core is saturated or not , the no - loading emf waveform of a conventional generator having the same size with the prototype ( except the stator slot ) is analyzed , and the waveform deviation factor is taken out 對(duì)一臺(tái)具有與電力發(fā)生器樣機(jī)相同尺寸(除定子槽形)傳統(tǒng)發(fā)電機(jī)的空載電勢(shì)波形進(jìn)行了分析。分析了不考慮鐵心飽和、考慮阻尼繞組影響和考慮鐵心飽和、考慮阻尼繞組影響兩種情況下,它的空載感應(yīng)電勢(shì),求取了空載電勢(shì)波形畸變率。