抑制开关磁阻电机振动的结构设计研究

Structural Design of Switched Reluctance Motor for Vibration Suppression

开关磁阻电机(SRM)应用于众多领域,但是本身的结构使其比其他传统电机有更大的振动和噪声,因此抑制SRM振动仍是研究的热门领域。为了抑制电机的振动,设计了一种新型的电机结构,即在转子两侧开孔,并在此基础上对定子齿顶开槽。以一台7.5 kW、1500 r/min、12/8极SRM为例,通过有限元分析仿真,对新型电机结构进行参数化计算,并得到最优结构。在保证平均转矩基本保持不变的情况下,减小了转矩脉动以及径向力。与原始电机相比,转矩脉动系数下降了16.01%,径向力峰值下降了19.96%。因此,证明了该方法对SRM振动抑制有较好的效果,对后续SRM设计及控制具有一定的借鉴意义。

Switched reluctance motors(SRMs)are used in many fields,but due to the structure,they have greater vibration and noise than other traditional motors.Therefore,suppressing the vibration of SRM is still a hot area of research.In order to suppress the vibration of the motor,a new type of motor structure is designed,for which holes are punched on both sides of the rotor and the stator tooth top is slotted.Taking a 7.5 kW,1500 r/min,12/8 poles SRM as an example,through the finite element analysis and simulation,the new motor structure is parameterized and the optimal structure is obtained.Under the condition that the average torque remains basically unchanged,the torque ripple and radial force are reduced.The torque ripple coefficient is reduced by 16.01%and the peak radial force is reduced by 19.96%compared with the original motor.Therefore,it is proved that this method has a good effect on the vibration suppression of the SRM.It has a certain referential significance to the design and control of the SRM.