基于DSP三相逆变电路在线故障诊断研究设计

On-line Fault Diagnosis Research and Design for 3-Phase lnverter based on DSP

以三相SPWM逆变系统为研究对象,建立了逆变器主电路开关器件的开路故障模式,提出了基于BP神经网络的故障诊断方法,确定了网络的结构和参数,设计了基于DSP电力电子逆变电路的在线神经网络故障诊断系统。通过试验验证了所提方法的正确性和可行性。

This paper establishes the fault types of the switch off of the switches in the three-phase Sine-PWM in-verter circuit,presents the diagnosis method based on neural networks,achieves the network structure and parameters,designs an on-line detection and fault diagnosis system based on DSP.The testing results proved the proposed method is correct and feasible.