双PWM变频调速系统的研究与应用  

Research and application of dual-PWM variable-frequency speed regulation

作　　者：李铁栓[1] 杨文焕[1] 倪凯峰[1] 

机构地区：[1]上海理工大学 光电信息与计算机工程学院,上海200093

出　　处：《能源研究与信息》2012年第4期232-236,201,共6页Energy Research and Information

摘　　要：论述了一种基于DSP2812控制平台的双PWM变频调速系统。该系统具有控制灵活、功率因数高、节能环保、谐波污染小等特点。详细阐述了基于电压电流前馈控制和PQ解耦控制的PWM可控整流器设计方案,利用PI调节器组成电压电流双闭环控制系统。逆变器设计采用矢量控制组成转速电流双闭环控制系统。然后基于MATLAB/SIMULINK仿真平台和实际硬件平台,结合系统控制策略分别搭建了双PWM调速系统,并对调压、电机的四象限运行等各种性能进行了比较详细的验证。结果证明了主电路参数选择的正确性和控制策略的可行性。In this paper, a DSP-based dual-PWM variable-speed system was described. It features flexible control, high power factor, easy maintenance and low cost, and is an energy efficient, environmentally friendly product. A PWM rectifier design based on voltage and current feed forward control and PQ decoupling control was presented, and the PI regulator was used to compose a voltage and current double closed-loop control system. In the inverter design, the vector control was used for the speed and current double closed loop control system. Based on MATLAB/SIMUL1NK simulation platform and an actual hardware platform, a dual PWM speed control system was built combined with system control strategy. In addition, the system capabilities such as regulating and four-quadrant operation of the motor, etc. were verified in detail. The results proved that the main circuit parameters were selected correctly and the control strategy practicable.

关 键 词：双PWM变频调速 矢量控制 SVPWM 

分 类 号：TM921.51[电气工程—电力电子与电力传动]