分数槽集中绕组永磁同步电机的电感计算

发布时间：2018-04-10 04:01

本文选题：永磁同步电机　切入点：分数槽　出处：《电工技术学报》2014年03期

【摘要】：在少槽多极的分数槽集中绕组永磁同步电机中,存在幅值较大的次谐波和与基波绕组系数相同的高次谐波,特别是存在与基波绕组系数相同、转向相反、幅值很大、极对数与基波相差仅几对极的谐波。使得电机的电枢反应谐波磁场很强,与之相对应的谐波漏抗很大,电机的总漏电感很大,其基波励磁电感与传统短距分布绕组电机相比小很多。一般情况下,漏电感都比励磁电感还大。在对电机磁路进行理想假定的条件下,针对不同槽极数组合的单元电机,推导出该类电机电感参数的计算公式。其中,电枢反应基波励磁电感计算公式与传统的交流绕组相同,而电枢反应总电感和谐波漏电感计算不同于传统的交流绕组。
[Abstract]:In the fractional concentrated winding permanent magnet synchronous motor with small slot and multi-pole, there are sub-harmonics with larger amplitude and high-order harmonics with the same fundamental winding coefficient, especially with the same winding coefficient of the fundamental wave, but the steering is opposite, and the amplitude is very large.The difference between the polar logarithm and the fundamental wave is only a few pairs of harmonics.The armature reaction harmonic magnetic field of the motor is very strong, the corresponding harmonic leakage reactance is very big, the total leakage inductance of the motor is very large, and its fundamental excitation inductance is much smaller than the traditional short-distance distributed winding motor.In general, leakage inductance is larger than excitation inductance.Based on the ideal assumption of the magnetic circuit of the motor, the formula for calculating the inductance parameters of this kind of motor is derived for the unit motor with different combination of slot poles.The formula of fundamental excitation inductance of armature reaction is the same as that of traditional AC winding, but the calculation of total inductance and harmonic leakage inductance of armature reaction is different from that of traditional AC winding.
【作者单位】：天津大学电气与自动化工程学院;
【分类号】：TM341

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