基于FPGA的SVPWM算法的實现毕业专业论文.docVIP

基于FPGA的SVPWM算法的实现 摘 要：为了数字实现SVPWM的算法，文中采用了以FPGA作为硬件基础，给出了基于FPGA的SVPWM算法的具体算法以及软件设计。文中使用Verilog HDL编写FPGA程序，采用语句和图形编辑相结合的方式进行编程以达到程序结构清晰的目的。程序采用Mealy型状态机的程序结构，以达到增加硬件资源的利用率，结构清晰，便于数字设计的目的。其中，软件通过了Modelsim Altera进行仿真，给出了其相关的仿真波形图以说明其无误。文中使用Storm Ⅲ FPGA开发板对软件进行验证，其中开发板的核心芯片为Altera 公司生产的EP3C10E144C8这款FPGA芯片，使用了RC滤波电路对PWM信号进行滤波处理并且给出了输出信号的示波器波形图和借助硬件电路驱动一台三相交流电机以说明其算法实现的准确性。 关键词：SVPWM；FPGA；空间矢量脉宽调制；Verilog HDL The Realization of SVPWM Algorithm Based on FPGA Abstract: To realize digital SVPWM algorithm, this paper adopted in hardware based on FPGA, and gives the specific algorithm of SVPWM algorithm based on FPGA and the software design. FPGA program written in this paper, we use Verilog HDL, adopt the way of combining statements and graphics editing program in order to achieve the purpose of the program structure is clear. Program type with Mealy state machine structure, increase the utilization of hardware resources, in order to achieve the structure is clear, for the purpose of digital design. Among them, the software through the Modelsim Altera simulation, its related simulation waveform graph is given to illustrate its correct. In this paper, we use the Storm Ⅲ FPGA development threatening the software validation, in which development board of the core chip of Altera company EP3C10E144C8 the FPGA chip, using the RC filter circuit to filter the PWM signal and output signal oscilloscope waveform diagram is given to illustrate the accuracy of the algorithm. Key words: Space vector pulse width modulation; SVPWM; FPGA; Verilog HDL 目 录 1 绪论 (1) 1.1 空间矢量控制技术 (1) 1.2 现场可编程门阵列 (2) 1.3 本文研究内容 (3) 2 空间矢量控制 (4) 2.1 空间矢量控制基本原理 (4) 2.1.1空间矢量的定义 (4) 2.1.2电压与磁链空间矢量的关系 (5) 2.1.3六拍阶梯波逆变器与正六边形空间旋转磁场 (6) 2.1.4 电压空间矢量的线性组合 (8) 2.2 空间矢量控制算法 (10) 2.2.1恒压频比 (10) 2.2.2 Clark变换 (10) 2.2.3 开关矢量持续时间计算 (11) 2.2.4 扇区判断 (12) 2.2.5 合成参考矢量 (12) 3 基于FPGA的SVPWM算法的软件设计 (12) 3.1 运算模块 (13) 3.1.1 三相参考电压峰值计算模块 (13) 3.1.2 三相电压矢量发生模块 (14) 3.1.3 坐标变换模块 (15) 3.1.4 开关导通时间计算模块 (15) 3.1.5 参考矢量位置判断模块