High frequency electric-drive with multi-pole motor for gas pipeline and storage compression applications

摘要

An integrated electric-drive compressor system 1 utilizes a high frequency drive for powering the multi-pole pair motor 12. The electric motor and compressor 10 are housed in a common pressure casing 16. The electric motor has added permanent magnets for achieving higher ratings and higher speeds. Drive topologies for a high frequency power converter are discussed and include two and three level bridge converters taking from a three phase supply to provide a variable voltage, variable frequency output via rectification and inversion. There is provision to bypass a failed bridge.