摘要
针对电流模型存在对电机参数较敏感,电压模型存在积分初始值偏差和直流偏置问题,结合二者各自优点,提出了两种综合磁链模型。切换模型综合基于锁相环的电压模型和电流模型的优点,磁链幅值和角度分别利用加权方法过渡;混合模型使纯积分环节处于反馈环内,并且电压模型输入结果经高通滤波器,电流模型输入结果经低通滤波器,二者自然过渡。使系统在低速度段使用电流模型,高中速度段使用电压模型,并使两种模型平滑过渡,使之形成适合于全速范围内的磁链观测模型。通过理论分析和仿真研究,两种综合磁链模型均能达到预期效果。
Current model is sensitive to the motor parameters, and there is initial value of the integral deviation and DC bias in voltage model. Two methods of complex flux mode were presented which with the advantages of current model and voltage model. Switching model takes good advantage of both the voltage PLL-based and current model, the flux amplitude and angle, respectively, change from one state to the other using the weighted method;the pure integrator is in the feedback loop in the hybrid model,its outcomes export through a high-pass filter,the results of the current model export through the low-pass filter. Current model works alone in low-speed, while the voltage model working in medium and high speed, and the transition between there two models is smooth. Making the flux observer is suitable for full-speed segment. Both of complex flux models can achieve the desired results through theoretical analysis and simulation.
出处
《电气传动》
北大核心
2011年第10期12-14,20,共4页
Electric Drive
基金
国家自然科学基金项目(51077124)
江苏省2009年度普通高校研究生科研创新计划(CX09B_113Z)
