A MOSFET based solid-state power controller for aero DC networks

• DOI: 10.1049/cp.2014.0412
• Publication Date: 2014-05-27T10:13:51Z
• Authors: T. Feehally; A.J. Forsyth
• Keywords: 0202 electrical engineering, electronic engineering, information engineering; 02 engineering and technology; 16. Peace & justice; 7. Clean energy

This paper details the design, construction, and testing of a MOSFET based solid-state power controller rated at 270V, 200A, equivalent to 54kW, with an overload capability of 400A. The power switch is a parallel array of 21 fractionally rated Si MOSFET devices which current share to achieve the overall rating while minimising on-state losses. A transient voltage suppressor is used to dissipate inductive energy and protect the power switching devices. Results analysing onstate losses, thermal performance, inrush current limiting, inductive load breaking, and over-current response times are discussed.