基于TMS320F28335的空间矢量脉宽调制研究

摘要

Using the mathematical methods to calculate the pulse width at different sectors by the principle of Space Vector Pulse Width Modulation (SPWM), at the same time, the method of how to determine the sector is also given. Because of the principle is simple and no trigonometric function calculation, so the programming is simple can effectively reduce the running time on the system. Using these principles has three groups of complementary symmetry by ePWM modules on TMS320F28335 to control Permanent Magnet Synchronous Motor (PMSM). And using dead-band submodule and Trip-Zone submodule to ensure the reliability and security of system.%通过分析空间矢量脉宽调制的原理，运用数学的方法计算出在不同的扇区需要的脉宽，同时也给出了如何判断当前扇区的方法。由于该原理简单，无需进行三角函数计算，因此编程简洁，能够有效降低了系统运行时间。利用这些原理通过TMS320F28335上的增强型脉冲宽度调制器产生3组互补对称的脉宽调制信号来控制永磁同步电机，同时使用死区控制子模块和错误控制子模块保证了系统运行的可靠性和安全性。