Mechanical method of iron loss measurement in a rotational field and analysis of iron loss in a motor
Mechanical method of iron loss measurement in a rotational field and analysis of iron loss in a motor
复制标题
旋转场铁损测量的机械方法及电机铁损分析
DOI：
10.1063/1.348138
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发表时间：
1991
影响因子：
3.2
通讯作者：
C. Kaido
中科院分区：
文献类型：
--
作者：
C. Kaido
提出了一种在旋转磁场中测量铁损的机械方法，并利用该方法对电机铁芯铁损的机理进行了研究。角速度为ω(rad/s)的旋转场中铁的损耗引起试样的转矩T (Nm)，总损耗由ωT计算。这种铁损测量方法不受试样结构和激励条件的限制，可以在电机使用的条件下测量铁芯的铁损。利用这种新方法，在50-900 Hz的旋转场中测量了含硅0.3%和3%的0.5 mm厚无取向电工钢的铁损耗。在磁碟中，随着磁感应强度的增加，旋转磁场中的铁损失比与单向磁场中的铁损失比减小。小于1T时，比值约为2，当感应接近饱和时，比值约为1或更小。研究了牙齿对铁流失的影响。带齿铁芯的铁损比带齿铁芯的铁损高。
A mechanical method of iron loss measurement in a rotational field was developed and, using this method, the mechanism of iron losses of motor cores was investigated. Iron losses in rotational fields of angular velocity ω(rad/s) induce torque T (Nm) in specimens, and the total losses are calculated from ωT. This new method of iron loss measurement is unrestricted by the configuration of specimen and the exciting conditions, and the iron losses of cores can be measured in the condition used in the motor. Using this new method, the iron losses of 0.5‐mm‐thick nonoriented electrical steels with 0.3% and 3% Si were measured in rotational fields at frequencies of 50–900 Hz. In disks, the ratios of iron loss in a rotational field to that in a one‐direction field decrease as induction increases. The ratio is about 2 at less than 1T and becomes about 1 or less as induction approaches saturation. The effects of teeth on iron loss were investigated. The iron losses of a core with teeth are higher than those of a d...