空间矢量控制的三相四桥臂逆变器建模与硬件实现  

Modeling and Hardware Realization of 3-phase 4-leg Inverter Based on SVM

作　　者：程蒙江川 陈长兴[1] 耿道田[1] 陈强[1] 陈婷[2] 

机构地区：[1]空军工程大学理学院,西安710051 [2]西安邮电大学,西安710000

出　　处：《空军工程大学学报（自然科学版）》2015年第2期86-90,共5页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：陕西省自然科学基础研究计划资助项目(2014JM8344)

摘　　要：在三相负载不平衡时,传统逆变器无法控制三相输出电压达到平衡状态,因此运用三相四桥臂结构控制零序电压和电流来应对不平衡负载。通过对三相输出电压进行解耦,并增加了电压和电流的双环控制,使得空间矢量调制(SVM)对逆变器控制的稳定性增强,提高了动态响应特性,运用Matlab/Simulink进行建模仿真,分模块搭建了仿真模型,仿真达到了预期应对不对称负载和负载突变的效果,并结合仿真模型算法部分编写了DSP程序,实验观察SVPWM波形,验证了算法的合理性和有效性。When the loads in three phases are unbalanced, the traditional inverter can not make the output voltages balanced. So a 3-phase 4-leg structure is used for controlling the zero-phase voltage and current to reply the unbalanced loads. In this paper, by decoupling the 3-phase output voltage and adding in the doub- le loop control of voltage and current, the space vector modulation to the inverter control stability is en- hanced and the dynamic response characteristic is improved. And then, Matlab/Simulink is applied to modeling and simulating, and the simulation model is set up which make the simulation achieve a desired effect. According to the algorithm, DSP is programmed and by observing SVPWM waveform, reasonabili- ty and availability of the algorithm are verified.

关 键 词：三相四桥臂逆变器 空间矢量调制 数字信号处理器编程 

分 类 号：TN4[电子电信—微电子学与固体电子学]