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Inverter fault-identification for VSI motor drives

机译:VSI电机驱动器的变频器故障识别

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The paper presents an identification procedure able to detect open circuit failures in voltage source inverters. The procedure is suitable to equip fault tolerant electric motor drives and in principle only requires the measurement of the DC link current as it accomplishes a reconstruction of the inverter output phase currents from the DC link current measurement, thus eliminating the need of conventional current sensors. However, if they are present at the cost of minimal modifications the PWM technique, response times as short as one switching period can be obtained. Compared to other technical solutions found on past literature, the proposed approach considerably reduces the required computational effort. Simulations and experimental tests are presented to confirm the consistence of the proposed approach.
机译:本文提出了一种识别程序,该程序能够检测电压源逆变器中的开路故障。该过程适合于装备容错电动机驱动器,并且原则上仅需要测量直流母线电流,因为它可以完成从直流母线电流测量中重构出逆变器输出相电流的过程,因此无需传统的电流传感器。但是,如果以最小的修改PWM技术为代价存在它们,则可以获得短于一个开关周期的响应时间。与过去文献中发现的其他技术解决方案相比,所提出的方法大大减少了所需的计算量。进行了仿真和实验测试,以确认所提出方法的一致性。

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