摘要
在交流电机的矢量型控制系统中应用空间矢量脉宽调制(SVPWM)同步调制策略时,存在合成矢量旋转周期和位置不确定导致SVPWM同步调制难以实现的问题。提出了一种适用于低开关频率下的交流电机矢量型控制系统的SVPWM同步调制策略脉冲发生比较值计算、采样扇区划分及基本矢量作用时间求取的方法,构造了完整的实现方案,并在样机上实现了所提方案。仿真与实验结果验证了所提方法的正确性、可行性及有效性。
When the synchronized space vector pulse width modulation(SVPWM)strategy is applied to the vector control systems of alternating current motors,there is a problem that the rotating period and the position of the synthesizing vectors are uncertain,which leads to the difficult realization of SVPWM synchronous modulation strategy.A method for the calculation of pulse generation comparison value,the sampling sector division and the calculation of basic vector action time of SVPWM synchronous modulation strategy for vector control system of alternating current motor at low switching frequency is proposed.A complete implementation scheme is constructed,and the proposed scheme is realized on the prototype.The simulation and experimental results verify the correctness,the feasibility and the effectiveness of the proposed method.
作者
李洁
张文涛
陈思宇
LI Jie;ZHANG Wen-tao;CHEN Si-yu(Xi'an University of Technology,Xi'an 710048,China)
出处
《电力电子技术》
CSCD
北大核心
2019年第5期118-121,共4页
Power Electronics
基金
陕西省重点一般项目—工业领域(2018GY-165)
西安市碑林区科技计划(GX1713)~~
关键词
空间矢量脉宽调制
低开关频率
矢量型控制
space vector pulse width modulation
low switching frequency
vector control
