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Online Lecture by Dr. Mohammad Hedayati @5pm

September 21, 2022 @ 10:30 PM - 11:30 PM IST

Title: High Voltage DC Circuit Breakers (HVDC CB)

Speaker: Dr. Mohammad Hedayati, Dyson Technology, UK.

Time and Venue: 5 pm, MS Teams/Online mode (Link provided below)

Abstract: The main challenge of the DC meshed grid is the lack of suitable fault protection devices. The AC circuit breaker cannot be used in the DC system as in DC there is no zero crossing to extinguish the arc. Hence the DC circuit breakers need to create a virtual current zero crossing. There are different types of DC CB, and three of them (solid state, mechanical, hybrid circuit breaker) are explained in this talk. The advantages and disadvantages of each technology are then pointed out.

Speaker Bio: Dr. Mohammad Hedayati did his Master and PhD in department of Electrical Engineering, IISc between 2008 to 2016. Then he moved to University of Aberdeen as a postdoc, where he was working on DC CB for DC meshed grids in 2016. In 2018 he joined University of Bristol working on GaN Devices Reliability and health monitoring and switching characteristics. In 2021 he joined Dyson technology, during this time he was designing high speed (150kRPM) motor drive inverters for vacuum cleaner and personal care applications. In October 2022 he will be joining Jaguar Land Rover (owned by Tata group) to design EV motor drive inverters.

All are welcome.

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September 21, 2022
10:30 PM - 11:30 PM IST