Abstract: A fluid compressor device includes a compressor section and a motor section. The compressor device further includes a working fluid first flow path that extends in a downstream direction through the motor housing to the compressor inlet. The working fluid first flow path is configured to receive a first flow of a working fluid that flows downstream through the motor housing past the electric motor and into the compressor inlet to be compressed by the compressor section. Additionally, the compressor device includes a working fluid second flow path extending through the housing. The working fluid second flow path is configured to receive a portion of the working fluid from the compressor section and direct the portion to the bearing system before merging with the working fluid first flow path.

Abstract: A turbomachine includes a housing, a rotating group that is housed within the housing, and a fluid bearing system with a thrust member. The turbomachine further includes a compressor stage configured to receive a fluid from an area within the housing. Also, the turbomachine includes a seal plate of the housing. The seal plate includes a first face and a second face. The first face has a flow surface that at least partly defines a fluid flow path toward the compressor wheel. The second face has a thrust member support surface configured to support the thrust member during rotation of the rotating group. The seal plate includes an aperture that fluidly connects the area to the fluid flow path.

Abstract: A method and system for monitoring an insulation resistance (IR) of an e-machine includes a bridge circuit arrangement. A voltage across the bridge circuit arrangement is detected. The IR is calculated as a resistance in the bridge circuit arrangement associated with the detected voltage.

Abstract: A turbomachine includes a housing, a rotating group that is housed within the housing, and a fluid bearing system with a thrust member. The turbomachine further includes a compressor stage configured to receive a fluid from an area within the housing. Also, the turbomachine includes a seal plate of the housing. The seal plate includes a first face and a second face. The first face has a flow surface that at least partly defines a fluid flow path toward the compressor wheel. The second face has a thrust member support surface configured to support the thrust member during rotation of the rotating group. The seal plate includes an aperture that fluidly connects the area to the fluid flow path.

Abstract: A turbomachine includes a housing and a rotating group supported for rotation about an axis of rotation within the housing. The rotating group includes a wheel and seal member that is unitary. The wheel and seal member includes a first wheel feature and a second wheel feature that are disposed in a back-to-back arrangement with an outer radial area disposed between the first and second wheel features and facing radially outward from the axis of rotation. The turbomachine also includes a plurality of labyrinthine seal members included on the outer radial area that cooperatively define, with the housing, a labyrinthine seal.

Abstract: A fluid compressor device includes a compressor section and a motor section. The compressor device further includes a working fluid first flow path that extends in a downstream direction through the motor housing to the compressor inlet. The working fluid first flow path is configured to receive a first flow of a working fluid that flows downstream through the motor housing past the electric motor and into the compressor inlet to be compressed by the compressor section. Additionally, the compressor device includes a working fluid second flow path extending through the housing. The working fluid second flow path is configured to receive a portion of the working fluid from the compressor section and direct the portion to the bearing system before merging with the working fluid first flow path.