CAJ | 학술논문

逆变电路是一个由离散的控制信号驱动连续状态变量随时间演化的典型的混杂系统，传统的基于数学模型的建模方法要么只考虑了系统的离散控制变迁忽略了系统的连续状态变迁，要么只考虑系统的连续状态变迁忽略了系统的离散控制变迁，这非常容易造成重要故障信息的丢失，大大影响故障诊断的实时性和可靠性。通过分析逆变器和电机系统的运行模式，建立逆变器和电机的混合逻辑动态模型，并运用MATLAB/SIMULINK对逆变器和电机的故障模式进行仿真分析，仿真结果表明该方法很好地描述了逆变器故障时系统的输出特性，为后续的故障诊断提供准确的故障信息。
역변전로시일개유리산적공제신호구동련속상태변량수시간연화적전형적혼잡계통，전통적기우수학모형적건모방법요요지고필료계통적리산공제변천홀략료계통적련속상태변천，요요지고필계통적련속상태변천홀략료계통적리산공제변천，저비상용역조성중요고장신식적주실，대대영향고장진단적실시성화가고성。통과분석역변기화전궤계통적운행모식，건립역변기화전궤적혼합라집동태모형，병운용MATLAB/SIMULINK대역변기화전궤적고장모식진행방진분석，방진결과표명해방법흔호지묘술료역변기고장시계통적수출특성，위후속적고장진단제공준학적고장신식。
Inverter circuit is a continuous state variable is driven by a discrete control signal with time evolution of a typical hybrid system,traditional modeling method based on mathematical model only consider the system either ignore discrete control change the state of continuous change of the system, and the ignored either considering only the system state of continuous change of discrete control system change, it is very easy to cause the loss of fault information is important, greatly influence the real-time performance and reliability of fault diagnosis. This paper has established the mixed logic dynamic model of inverter and motor through the analysis of the mode of the inverter and motor system, and using MATLAB/SIMULINK to simulation analysis the fault mode of inverter and motor, the simulation results shows that the method is very good to describe the output characteristics of system when inverter fault,provide accurate fault information for subsequent fault diagnosis.