摘要
绕组是构成电机的核心部件,电机依靠感应于绕组中的电势和通过的电流来产生电磁功率和电磁转矩,从而达到进行机电能量转换的目的。绕组的接线方式更直接影响电机的运行特性和经济性。槽电流与电机的容量、电压、并联支路数相关联,槽电流的大小直接影响电机的经济性及工艺性。绕组谐波含量是绕组性能的重要指标,绕组接线的一个重要研究方面就是降低谐波。本文提出的双层定子绕组扩大并联支路数降低谐波接线方法是:通过改变单元电机电势星形图中所选槽的位置,从而改变N-S极下构成各支路的单边绕组间的夹角,所构成的绕组可等效为每极每相槽数减半、相位相同的两套绕组。
Winding is a core component of the motor, depending on the induced potential and current of which the alternator generates electromagnetic power and torque for the purpose of electromechanical energy conversion. In addition, wiring has a direct impact on the operating characteristics and economic efficiency of the alternator. Slot current is relevant to the capacity,voltage and parallel branch number of the alternator, while the slot current value affects the economic efficiency and the manufacturability of the motor. Winding harmonic content is an important indicator of performance of the winding, an important aspect of whose research is to reduce the harmonics. This paper presents a method of bi-layer winding to reduce the harmonics through expansion of parallel branch number: by selecting different slots in the chart of unit motor potential, the angle is changed between the unilateral windings which constitute the branches under N-S poles, therefore the winding can be equivalent to two sets of winding of the same phase with number of slots per pole per phase halved.
出处
《大电机技术》
2015年第3期1-3,26,共4页
Large Electric Machine and Hydraulic Turbine
关键词
三相交流电机
双层绕组
扩大并联支路数
单边绕组
谐波
three-phase alternator
bi-layer winding
expansion of parallel branch number
unilateral winding
harmonic wavelength
