Job ID: R0032973
Date Posted: Nov 30, 2023
Segment: Green Energy & Mobility
Business Unit: Hitachi Energy
Company Name: HITACHI ENERGY SWEDEN AB
Profession (Job Category): Administration & Facilities
Job Type (Experience Level): Entry Level
Job Schedule: Full time
You will be working within HVDC valve development team (UVM) as thesis worker, in bolted joints and flexible conductors are commonly used in converter valve application. Under steady state operation (with constant current), it is relatively straightforward to understand their physics. However, when short-circuit current (a few hundred kA within a few µs) goes through this connection, arcing, electromagnetic force (Lorenz force & Holm force) and "whiplashing effect" which is assumed to amplify the forces causes a significant amount of stress to the joints. Due to complexity of the instantaneous Multiphysics phenomena, hundreds of testing campaigns with the real product have been the only method for mechanical design evaluation. Iteration of the testing is expensive, and relying only on testing leaves no room for minor modifications for improving the design. To be more effective in product development with less testing effort but of course with certainty for the success, there is a strong wish within the team to develop knowledge and a simulation method to capture these physics. Your assignment will be to establish a simulation approach to capture electromagnetic force and "whiplashing effect", to quantitatively represent what we observe from tests.
More about us
We welcome your application till 03rd December 2023. Applications will be reviewed on an ongoing basis and the position can be filled in a shorter timeline. Recruiting Manager – Kunal Pathak, [email protected] be happy to answer your questions regarding this position.