CAJ | 학술논문

大功率逆变器是风力发电机组中主要的变流装置之一，也是故障发生比较多的装置。提出将键合图与解析冗余方法相结合的故障诊断方法，建立元器件的键合图故障诊断模型、故障解析冗余关系及特征矩阵，通过观测矩阵和特征矩阵的对比，进行系统的故障检测。在20-sim软件中的仿真实验结果表明该方法对于大功率逆变器的故障诊断具有良好的便捷性和有效性。
대공솔역변기시풍력발전궤조중주요적변류장치지일，야시고장발생비교다적장치。제출장건합도여해석용여방법상결합적고장진단방법，건립원기건적건합도고장진단모형、고장해석용여관계급특정구진，통과관측구진화특정구진적대비，진행계통적고장검측。재20-sim연건중적방진실험결과표명해방법대우대공솔역변기적고장진단구유량호적편첩성화유효성。
High power inverter is one of the most converter devices in wind turbine generator systems,and also has many faults in working.A fault diagnosis method was proposed which combines analytical redundancy with bond graph model for high power inverter.Bond graph model for the system and establishing diagnostic bond graph model were built, with analytical redundancy relationship and its fault characteristic matrix were established at the same time. Fault was detected and isolated quickly through comparing the observed characteristics matrix and fault characteristic matrix.The simulation results in 20 -sim demonstrate that the method is convenient and effective for High power inverter fault diagnosis.