摘要
分析传统的基于直角坐标系的空间矢量脉宽调制技术(SVPWM)的基本原理及缺点,提出一种基于非正交的斜角坐标系的SVPWM改进算法。该改进算法是将αβ直角坐标系转换为pq斜角坐标系,这样使得电压参考矢量在进行扇区判断和开关矢量作用时间的计算上都减少或避免了三角函数计算,降低了运算量,节约了运算时间,更容易数字实现。仿真结果验证了该算法的可行性。
The basic principle and shortcomings of traditional space vector pulse width modulation（SVPWM） based on rectangular coordinate were analyzed.A new simplified algorithm based on non-orthogonal coordinates was proposed.The improved scheme decomposed the coordinate changed from αβ topq.Using this method,the computing of the sector position and switching vector time,which could avoid the calculation of trigonometric function,reduced the computation,saved the computing time and suited for digital implementation.The simulated result confirms that the algorithm is validity.
出处
《化工自动化及仪表》
CAS
北大核心
2010年第1期63-65,69,共4页
Control and Instruments in Chemical Industry
关键词
SVPWM
坐标变换
矢量
SVPWM
coordinate transformation
vector
