基于PR调节器的PWM整流器VFOC控制  

Virtual Flux Oriented Vector Control of PWM Rectifier Based on PR Regulator

作　　者：戴鹏[1] 董苏[1] 程尧[1] 符晓[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《电气传动》2012年第4期39-41,64,共4页Electric Drive

摘　　要：研究了两相静止坐标系下三相电压源型PWM整流器虚拟磁链定向(VFOC)控制策略。采用虚拟磁链观测器得到坐标变换中的角度信息,无需电网电压传感器。电流环的控制采用比例谐振调节器(PR)取代传统的PI调节器。该调节器能够抑制低次谐波和开关频率附近的高次谐波,实现电流在两相静止坐标系下的稳态无静差跟踪控制,不需要前馈解耦,简化控制系统设计。搭建了以TMS320F2812DSP为控制核心的实验装置,仿真和试验结果证明了该方法的可行性。Virtual flux oriented vector control strategy of three phase voltage source PWM rectifier under two-phase stationary coordinate system was researched. To eliminate grid voltage sensor,a novel flux observer was adopted to obtain the angle information that used to coordinate transformation. Current loop was con- trolled by the proportion resonant （PR） controller instead of traditional PI controller. The PR controller can inhibit low order harmonics and the high harmonies in the vicinity of switching frequency . It can achieve no static error tracking control under two-phase stationary coordinate system without need of feedforward decou- piing and then simplifier the control system. Real time experiments based on a TMS320F2812DSP platform were conducted . The simulation and experimental results both verify the feasibility of the method.

关 键 词：比例谐振调节器 虚拟磁链定向 两相静止坐标系 磁链观测器 

分 类 号：TM461[电气工程—电器]