本文關(guān)鍵詞： 非晶合金 永磁同步電機(jī) 雜散損耗 損耗測(cè)試　出處：《沈陽(yáng)工業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：非晶合金材料是一種新型軟磁材料,具有低鐵耗、高磁導(dǎo)率的特點(diǎn),其運(yùn)用于電機(jī)鐵心可以顯著提高電機(jī)的效率。本文主要研究了非晶合金帶材試樣和非晶合金永磁同步電機(jī)的損耗特點(diǎn),對(duì)非晶合金永磁同步樣機(jī)的空載雜散損耗和負(fù)載雜散損耗進(jìn)行計(jì)算分析。首先,在不同頻率下對(duì)國(guó)產(chǎn)和日立公司生產(chǎn)的經(jīng)過(guò)卷繞—浸漆固化—退火加工工藝后的非晶合金環(huán)形鐵心試樣進(jìn)行損耗測(cè)試,經(jīng)處理可得到各工藝下的磁性能B-H曲線、各個(gè)頻率下的損耗曲線和因各加工工藝引起的損耗密度增量的修正系數(shù)關(guān)系式。其次,利用實(shí)測(cè)的帶材損耗數(shù)據(jù)擬合推導(dǎo)出其修正系數(shù),計(jì)算了一臺(tái)2.1kW非晶合金徑向磁通永磁同步電機(jī)的空載雜散損耗和負(fù)載雜散損耗,通過(guò)對(duì)比計(jì)算值與實(shí)驗(yàn)值得出其損耗計(jì)算修正系數(shù),在此樣例中空載雜散損耗計(jì)算修正系數(shù)為1.07,負(fù)載雜散損耗計(jì)算修正系數(shù)為1.06。最后,通過(guò)對(duì)比非晶合金電機(jī)與硅鋼片電機(jī)實(shí)驗(yàn)數(shù)據(jù),其最主要的優(yōu)勢(shì)在于鐵耗小于硅鋼片電機(jī),但銅耗、雜散損耗均高于硅鋼片電機(jī),這導(dǎo)致了非晶合金電機(jī)效率優(yōu)勢(shì)不明顯。以2.1kW非晶合金永磁同步電機(jī)與硅鋼片電機(jī)在3000 r/min時(shí)為例,冷態(tài)時(shí),額定負(fù)載情況下非晶合金電機(jī)的總損耗比硅鋼片電機(jī)高12.3W,占額定功率1.575kW的0.78%;熱態(tài)時(shí),額定負(fù)載情況下非晶合金電機(jī)的總損耗比硅鋼片電機(jī)低10.02W,占額定功率1.575kW的0.64%。非晶合金電機(jī)在反電動(dòng)勢(shì)低的情況下,其效率仍可以高于硅鋼片電機(jī),說(shuō)明其損耗優(yōu)勢(shì)明顯,特別是鐵耗;非晶合金電機(jī)冷態(tài)效率低于硅鋼片電機(jī),而熱態(tài)效率高于硅鋼片電機(jī),說(shuō)明該非晶合金電機(jī)的磁負(fù)荷選取過(guò)高。在設(shè)計(jì)電機(jī)時(shí),鐵心齒、軛部磁密應(yīng)小于1.2T。
[Abstract]:Amorphous alloy is a new kind of soft magnetic material with low iron consumption and high permeability. Its application in motor core can significantly improve the efficiency of motor. In this paper, the loss characteristics of amorphous alloy strip sample and amorphous alloy permanent magnet synchronous motor are studied. The no-load stray loss and load stray loss of amorphous alloy permanent magnet synchronous prototype are calculated and analyzed. The magnetic properties B-H curves of amorphous alloy annular core samples produced by domestic and Hitachi were measured at different frequencies after winding, enamelling, curing and annealing, and the magnetic properties of B-H curves were obtained by treatment. The relationship between the loss curve at each frequency and the increment of loss density caused by various processing processes is derived. Secondly, the correction coefficient is derived by fitting the measured strip loss data. The no-load stray loss and load stray loss of a 2.1 kW amorphous alloy radial flux permanent magnet synchronous motor are calculated. In this example, the calculating correction coefficient of no-load stray loss is 1.07, and the correction coefficient of load stray loss is 1.06.Finally, by comparing the experimental data of amorphous alloy motor and silicon steel sheet motor, the most important advantage is that the iron consumption is smaller than that of silicon steel sheet motor. However, copper consumption and stray loss are higher than those of silicon steel plate motor, which leads to the indistinct efficiency advantage of amorphous alloy motor. Taking 2.1 kW amorphous alloy permanent magnet synchronous motor and silicon steel sheet motor for example at 3000 r / min, in cold state, Under rated load, the total loss of amorphous alloy motor is 12.3 W higher than that of silicon steel sheet motor, accounting for 0.78 of rated power of 1.575kW. The total loss of amorphous alloy motor under rated load is 10.02 W lower than that of silicon steel sheet motor, which accounts for 0.64 of the rated power of 1.575kW. The efficiency of amorphous alloy motor can still be higher than that of silicon steel sheet motor when the back EMF is low, which shows that the loss advantage is obvious. The cold efficiency of amorphous alloy motor is lower than that of silicon steel sheet motor, but the hot state efficiency is higher than that of silicon steel sheet motor, which indicates that the magnetic load of the amorphous alloy motor is too high. When designing the motor, the magnetic density of the yoke should be less than 1.2 T.
【學(xué)位授予單位】：沈陽(yáng)工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM341

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