Chief Executive Officer
Dhruv, an IIT Bombay M.Tech graduate with 8 years of industry experience, plays a pivotal role in driving NxElite’s technical excellence and innovation. His deep expertise and strategic insight significantly strengthen the company’s vision and execution.
• Designed a 100W Type-C Power Delivery charger, integrating a power delivery controller and a buck converter controller to ensure efficient power conversion and reliable operation.
• Designed a Type-III compensator for optimal output voltage regulation and stability.
• Simulated the power stage converter in closed-loop mode, using PSpice for TI to verify functionality.
• Developed detailed schematic designs and PCB layouts using OrCAD Capture and Allegro PCB.
• Investigate the feasibility of redundancy and fault-tolerant operation in power electronic converters, and propose a suitable design with redundant control to enhance drive reliability.
• Conducted an extensive literature survey on various power electronics converter topologies used in conventional electric drives and their fault-tolerant operation.
• Performance and reliability comparison of power electronics converters in their post-fault conditions.
• Simulated degraded performance of active neutral point clamp (ANPC) converter in different fault conditions conditions using PLECS software with an appropriate control strategy to validate the performance.
• Design and develop a compact ANPC converter, with digital implementation of open-circuit fault Detection and real-time fault-tolerant mode switchover control in the digital controller.
Published: 2024 IEEE International Communications Energy Conference (INTELEC) · Aug 5, 2024
This paper introduces a real-time fault diagnosis and fault-tolerant method for detecting open-circuit (OC) faults in insulated-gate bipolar transistors (IGBTs) for a three-phase active neutral point clamp (3L-ANPC) converter. The strategy utilizes pole voltage as an input, and based on the deviation between the output pole voltage and the applied switching state, identifies any faulty switches. This approach is load-independent and does not require additional current information. Practical implementation of the strategy only necessitates three additional pole voltage sensors. This diagnostic method enables faster fault detection, typically within one switching cycle under favourable conditions, and can also detect multiple OC failures using the same strategy. Experimental and simulation results validate the effectiveness of the proposed method.
IEEE Xplore