Dual-lane fault-tolerant actuator drive with fault ride-through

McDonald, SP; Mecrow, BC; Winterborne, D

doi:10.1049/icp.2024.2191

Dual-lane fault-tolerant actuator drive with fault ride-through

Lookup NU author(s): Dr Stephen McDonald, Professor Barrie Mecrow, Dr Dave Winterborne

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Abstract

© The Institution of Engineering & Technology 2024. This paper describes the development and initial testing of a dual-lane high speed electric drive for the operation of a prototype aerospace actuator. The drive features two fully independent three-phase inverters, each supplying one half of a dual-lane permanent magnet synchronous machine to provide a fault-tolerant actuator drive. Each lane is capable of independently continuing operation of the load in the event of an electrical fault on the other lane. The paper focuses on the protection and interconnection control of the input 540V DC supply implemented within each drive, then outlines some steps taken to manage the compliance with standards that is often overlooked in other works. Direct communication between the two controllers permits fault ride-through responses, such as handing over control to a healthy lane when a fault occurs. Under healthy operation, this link between the controllers enables active-active load sharing operation. Simulation and test results are presented, demonstrating the fault tolerant performance.