A Fault Tolerant Nine Level Cascaded H Bridge Multi Level Inverter for Electrical Vehicle Application

摘要

With the implement of national electrical vehicle project, the development of new energy vehicle like the electrical vehicle, hybrid vehicle and fuel battery vehicle is strengthened gradually. However, an important feature of electrical vehicle is that to withstand fault conditions. To fulfill increasing demand for higher dependability in power semiconductor converters applicable in electrical vehicles, fault detection (FD) and mitigation is a very important. During this study, a model-based on open semiconductor switch fault and closed semiconductor switch fault designation methodology is conferred for a voltage-source electrical inverter (VSI) supply a Squirrel Induction motor drive. To understand this goal, a model-based designed by using simulink. After that, the model is studied with and while not of each open and short faults. Afterwards, the planned FD technique identifies the faults within the H-bridge cell. The conferred FD technique is easy and fast; additionally, it's able to sight multiple open switch or open faults in distinction to standard ways. On the opposite aspect, so as to mitigate the occurred faults, the fault occurred switch leg of the cell has been shorted.