摘要
研究了二相逆变器-异步电动机系统的空间矢量脉宽调制(SVPWM)控制技术。该系统可以广泛应用于小功率、宽调速运行的场合。通过对电机基本方程进行Kron变换,建立系统完整的数学模型,提出四个电压矢量八个工作空间的SVPWM控制技术,推导控制参数和计算公式,建立了基于80C196KC控制器的二相逆变器-异步电动机系统。实际运行表明,SVPWM在二相异步电动机变频调速中的应用可使转矩脉动减少、效率提高,具有一定的经济性和实用性。
A novelty space vector pulse width modulation（SVPWM） technique for the two-phase inverter-fed asynchronous motors system is proposed, which can be widely used in the low or middle power level field. Integrated mathematical model is set based on the whole system by Kron transform. The SVPWM technique by using four spaces voltage vectors and divided eight sectors is advanced. The controller parameter and formulation are deduced. An opti- mized modulation index is proposed for the motor having rotary circle magnetic field. Meanwhile, the Switching Se- quence is determined. This novelty technique can reduce the torque ripple and minimize the ripple content of the out currents. The system of experiment consists of 80C196KC controller, power drive device, inverter-fed device, and a low power tow-phase induction motor.
出处
《电机与控制应用》
北大核心
2007年第11期36-40,共5页
Electric machines & control application
基金
吉林省教育厅科研计划项目(200688)
关键词
空间矢量脉宽调制
二相逆变器-异步电动机
转矩脉动
space vector pulse width modulation
two-phase inverter-fed asynchronous motors system
invertor-fed device
