Alternative Technology Trends and Returns of Experience of Compression Services Driven by Variable High-Speed Induction Motors Systems

Over the past three decades, the introduction of high-speed induction motors has enabled the electrification of various compression services. This paper aims to provide feedback from end users and manufacturers of compression trains using direct electric drives. The first part of the article presents the technology coverage of induction motors and voltage frequency drives up to 100 MW, including the use of active magnetic bearings as a replacement for oil lubricated bearings, and replacement opportunities for gas and steam turbines. The second part reviews the existing architectures of electric compression trains in operation, commissioning, or design phases, for compressor services, covering standalone and integrated motor-compressor systems. Returns of Experience and recommendations are also presented, focusing on the reasons that led the end-user to migrate their compression services to high-speed electric, including gas monetization, reduction of greenhouse gas emissions and process flexibility, highlighting the benefits in term of CAPEX and OPEX.