BUCK变换器在高速双凸极电动机调速系统的研究

发布时间：2018-04-28 11:00

本文选题：PWM控制 + Buck变换器　；参考：《微电机》2014年11期

【摘要】：首先分析了传统PWM调制方式下,高速双凸极电动机在换相区和非换相区的工作模态,指出了传统PWM调制方法会出现电流上升过快,存在较大的电流纹波和转矩脉动,从而影响电机的运行特性。为此提出了在三相逆变器前级加入Buck变换器,通过转速、电感电流构成新型双闭环调速系统。理论分析和实验结果均表明,新型调速系统通过控制母线输入电压,消除了双凸极电机在非换相区内的电流纹波,有效地抑制了换相区的转矩脉动,验证了Buck变换器在系统中的有效性和必要性。
[Abstract]:In this paper, the working modes of high speed doubly salient motor in commutative and non-commutative regions under traditional PWM modulation are analyzed. It is pointed out that the current rise is too fast and there are large current ripple and torque ripple in the traditional PWM modulation method. Thus, the operating characteristics of the motor are affected. In this paper, a new type of double closed loop speed regulating system is proposed by adding Buck converter in front of the three-phase inverter, through rotating speed and inductance current. The theoretical analysis and experimental results show that the new speed regulation system can eliminate the current ripple of the doubly salient motor in the non-commutative region by controlling the input voltage of the bus, and effectively restrain the torque ripple in the commutative region. The validity and necessity of Buck converter in the system are verified.
【作者单位】：南京航空航天大学航空电源航空科技重点实验室;
【基金】：江苏省研究生培养创新工程(SJLX_0127) 中央高校基本科研业务费专项资金
【分类号】：TM46;TM35

【共引文献】