摘要
以给定最高频率f1max下6拍180°控制的磁链六边形外切圆为磁链轨迹控制目标,通过对逼近圆形旋转磁场的磁链线性组合规划,给出了各扇区电压空间矢量的组合和作用时间,并将非零电压矢量作用时间定义为磁链时间分量,将零电压空间矢量作用时间定义为压频时间分量,论证了任意频率下,维持非零电压矢量作用时间不变,即磁链时间分量不变,可维持定子磁链恒定;调节零电压空间矢量作用时间,即压频时间分量,可进行电压频率协调控制。该方法没有与空间角度相关的时间计算,是一种简化实用的SVPWM调制方法。
With the flux hexagonal excircle resulting in six dead-beat control at highest frequency condition for the trajectory control objective,by means of a linear combination of the flux planning close to a circular rotating magnetic field,a combination of voltage space vectors and role times were given in each sector.The non-zero voltage vector was defined as the flux time component,and the zero-voltage space vector time was defined as voltage-frequency time component.It is proved that,to maintain the role time invariant of the non-zero voltage vector,the flux should be maintained constant,to regulate the role time of zero-voltage space vector,and the voltage frequency will be able to coordinate control.This method does not need time calculation associated with the space-angle,so it is a simplified and practical method of SVPWM modulation.
出处
《电源技术》
CAS
CSCD
北大核心
2012年第2期248-250,共3页
Chinese Journal of Power Sources
基金
海洋公益性行业专项基金(200805039)
关键词
磁链轨迹
逆变器
空间矢量
脉宽调制
flux trajectory
inverter
space vector
pulse-width modulation
