摘要
提出一种基于虚拟磁链的PWM整流器无交流电压传感器运行启动性能的改善方法。通过采用带有积分限幅反馈环节的积分器代替不定积分器进行虚拟磁链观测,解决了传统方法存在的初始值选取和观测结果存在幅值和相位误差等问题。对基于改进方法的虚拟磁链直接功率控制PWM整流器进行了实验验证,实验结果证明了该改进方法的正确性和可行性。
A starting performance improved method for AC voltage sensorless PWM rectifier based on virtual flux-linkage is proposed.Through substituting the pure integrator by the integrator with saturable amplitude limited feedback loop to observe the virtual flux-linkage, the problems of the initial value selecting,the amplitude and phasor error generated in observation result with conventional method are solved.The experimental results prove the validity and feasibility of the proposed improved observation method.
出处
《电力电子技术》
CSCD
北大核心
2008年第9期70-72,共3页
Power Electronics
基金
校引进人才科研启动基金项目(06-05)~~
关键词
整流器
电压传感器
积分器
rectifier
voltage sensorless
integrator
