基于FPGA的三电平空间矢量脉宽调制算法半实物实验方案  

Hardware-in-the-loop Experiment Scheme for a Three-level Space-vector PWM Algorithm Based on FPGA

作　　者：吴瑕杰[1] 王顺亮[1] 宋文胜[1] 方辉[1] 冯晓云[1] 

机构地区：[1]西南交通大学电气工程学院,四川省成都市610031

出　　处：《电力系统自动化》2014年第3期78-82,88,共6页Automation of Electric Power Systems

基　　金：国家科技支撑计划资助项目(2009BAG12A05);国家自然科学基金资助项目(51207131;51277153);中央高校基本科研业务费专项资金资助项目(2682013ZT19;2682013CX017)~~

摘　　要：以三电平二极管中性点钳位牵引逆变器电机系统为研究对象,首先对各扇区的几何对称性与矢量作用时间之间的密切关系进行了详细分析。在此基础上,探讨了一种简化三电平空间矢量脉宽调制(SVPWM)算法。然后,给出了该算法基于现场可编程门阵列(FPGA)的详细设计方案,并通过简化乘法器、高效率除法器等关键性设计,避免数字处理器进行大量三角函数运算,减少硬件资源占用,同时兼具FPGA速度快、可移植性好、模块复用率高等特点。最后,通过基于FPGA与dSPACE的半实物实验平台的实验研究,验证了该简化三电平SVPWM算法的正确性及其基于FPGA设计方案的可行性。A simplified three-level space vector pulse width modulation（SVPWM）algorithm for a three-level diode neutral point clamped（NPC）traction inverter in a motor system is discussed first based on the close relationship between the geometrical symmetry of sectors and the duty-ratio time of vectors.Then,a detailed design scheme based on the field programming gate array（FPGA）characterized by high speed,good compatibility and reusability is presented,which can relieve the digital processing unit of heavy trigonometric function computation through the simplified design of multiplier and divider units. Finally,the accuracy of the simplified three-level SVPWM algorithm and the feasibility of the design scheme based on FPGA are verified in the hardware-in-the-loop（HIL）experimental platform based on FPGA and dSPACE.

关 键 词：三电平逆变器 空间矢量脉宽调制 半实物实验 现场可编程门阵列 

分 类 号：TM464[电气工程—电器]