虚拟磁链定向的PWM整流器矢量控制研究  

Research for Virtual Flux Oriented Vector Control of PWM Rectifier

作　　者：郑征[1,2] 景小萍[2] 

机构地区：[1]中国矿业大学机电与信息工程学院,北京100083 [2]河南理工大学电气工程与自动化学院,河南焦作454000

出　　处：《电气传动》2011年第1期38-41,共4页Electric Drive

基　　金：河南省重大攻关项目(082102240008)

摘　　要：提出了三相电压型PWM整流器的改进d-q模型,引入虚拟磁链定义,建立通用的d轴虚拟电网磁链定向的双闭环矢量控制(VFOC)系统,与传统的电压定向矢量控制相比较,省去了电网电压传感器,减少了系统成本。提出能够准确观测虚拟磁链的低通滤波器补偿法,有效抑制电压电流波干扰。仿真结果和实验结果验证了这种方法的可行性和有效性。A modified d-q model for three-phase voltage source PWM rectifier was proposed, introduced the definition of virtual flux and established d-axis virtual grid-flux-oriented double closed-loop vector control strategy,whlch can save the grid voltage sensor and reduces system cost compared with traditional voltage ori- ented vector control. The low-pass filter compensation method was presented to accurately observe virtual flux and effectively inhibit the voltage and current interference wave. The simulation results and experimental resuits verify the feasibility and effectiveness of this method.

关 键 词：PWM整流器 虚拟磁链 改进d—q模型 矢量控制 

分 类 号：TM461[电气工程—电器]