文档介绍：基于DSP的三相SVPWM变频调速系统的设计
摘要
根据电压矢量的基本原理,利用TMS320LF2407A,对电流采样、速度检测、驱动保护以及控制系统进行软件设计。设计出基于DSP控制系统的SVPWM的变频调速系统控制器。使得逆变电源的智能化程度更高,性能更加完美。本文对SVPWM技术进行了深入的讨论, 并给出了一个基于 TMS320F2407ADSP硬件决定切换模式的SVPWM控制方法,以证明这种方法的有效性。实验结果表明硬件决定开关模式在感应电动机控制中可以大大降低微处理器的软件工作量、降低功率开关器件频率、减少开关损耗。该设计利用DSP设计的信号发生器不仅成功实现了输入时间信号到SVPWM触发信号的转换,而且具有良好的抗干扰能力。此外,其并行处理结构可以保证三相桥臂开关同时动作,有效地提升了控制系统的整体性能。可简便地应用于逆变器控制系统中。SVPWM在输出电压或电机线圈的电流都将产生更少的谐波,提高了对电压源逆变器直流供电电源的利用率。提高了电压型逆变器的电压利用率和电动机的动态响应性能,同时减少了电动机的转矩脉动,简单的矢量模式切换更易于数字化实现。
关键词:DSP;SVPWM;变频调速系统
Abstract
According to the basic principles of voltage vector, using TMS320LF2407A, on current sampling, speed detection, driver protection and control system software design. Designed SVPWM based on DSP control system of variable speed system controller. Make intelligent inverter higher degree of performance more perfect. In this paper, SVPWM techniques were discussed in depth and gives a decision based on the hardware switch mode TMS320F2407ADSP SVPWM control method to prove the effectiveness of this approach. Experimental results show that the decision to switch the hardware model in induction motor control can greatly reduce the workload of the microprocessor's software to reduce the frequency power switching devices, to reduce switching losses. The design of the signal generator using DSP design essfully achieved not only the time signal to the SVPWM trigger input signal conversion, but also has good anti-jamming capability. In addition, the parallel processing structure can ensure the same three-phase bridge arm switch movement, effectively improve the overall performance of the control system. Can be easily applied to inverter control system. SVPWM motor coil in the output voltage or current will have less harmonic, increase the voltage source inverter DC power supply utilization. Increase the voltage inverter efficiency and dynamic response of motor performance, while reducing motor torque ripple, the simple vector model of digital switching easier to ach