摘要
提出了基于数字信号处理器 TMS3 2 0 F2 40的一种空间矢量 PWM算法。通过预分解矩阵 ,由期望电压矢量直接计算空间矢量在各个扇区内的作用时间。该算法不需要正弦函数和反正切函数查表 ,故程序运算速度和控制精度明显提高 ,对提高开关频率、提高 PWM整流器的功率密度有重要意义。文中还给出了一种判别扇区的方法 ,仿真和实验结果验证了该算法的有效性。
A novel a lgorithm for space vector pulse width modulation in three phase power factor cor rection applications is proposed. Time durations for the active vectors formed b y the sector containing the desired reference voltage vector are directly calcul ated by matrix pre-decomposing, without looking up sinusoidal and tangential ta bles, based on TMS320F240. Therefore running speed and control precise of the pr ogram can be improved. As a result the switching frequency and power density of the rectifier are increased. A new method for detecting the sector is given. Fin ally simulation and experimental results are given to verify the algorithm.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2004年第5期579-583,共5页
Journal of Nanjing University of Aeronautics & Astronautics
关键词
数字信号处理器
功率变换器
功率因数校正
控制
digital signal processor
power converter
power factor correction
control
