As electromechanical energy converters become more prevalent in high impact products such as automotive, biomedical, and energy harvesting devices, reliable operation in the face of single and multiple failures turn into a high priority. It is in this context that reconfiguration of the hardware and software to maintain continued service, compliment of the remaining resources, has attracted substantial attention. Early detection of faults in actuators and power electronics circuit, seamless and bump free disengagement of the faulty parts and proper treatment of the system to continue its intended function, with deteriorated performance level at times, are essential elements in development of fault tolerant power electronic-based systems and adjustable speed motor drives.
Engineered Technologies at REVT
>Just-in-time detection of faults in automotive cascaded dc-dc converters using statistical moments.
>Detection of faults in Li-Ion batteries using the concept of impulse response.
>Detection of mechanical and electrical faults in permanent magnet synchronous machines using field reconstruction method.
>Current reconstruction in multi-legged power electronics circuit using innovative placement of sensors.
These technologies have been successfully tested on bench scale prototypes and are ready for application. The field of research in fault tolerant operation of power electronic-based systems provides many opportunities to improve the reliability thereby paving the road for integration of these devices in mission critical and high performance equipments.