Abstract: An integrated motor-compressor unit comprising a motor and a compressor coupled to said motor via a rotatable shaft and mounted in a single common housing configured to circulate a cooling fluid in a cooling circuit, wherein the integrated motor-compressor unit comprises a depressurization system configured to depressurize the pressure of the motor.

Abstract: A filtration device, used to filter a cooling gas in an integrated compressor unit. A gas is circulated in two directions between two concentric cylindrical walls forming a duct. The walls are part of a removable inner cartridge and the motor housing of the integrated motor compressor unit, on which the cartridge is mounted. The gas enters the duct through an inlet, divides into two streams flowing downwards and meets again from two opposite directions at the bottom of the duct. It creates a turbulent zone in front of a first outlet, where some of the larger particles are trapped and fall into the first outlet via gravity. The filtered particles fill the duct and pass through upper second outlets which are provided at an intermediate location in the duct. The filtered gas passes through the second outlets and reaches an inner passage leading to bearings that require cooling.

Abstract: An impeller wheel assembly for a radial rotating machine, comprises a bladed hub portion of an impeller wheel, with a first radially outward facing, fluid deflecting surface having a curvature profile designed to deflect an axial fluid flow into a radial centrifugal flow, and comprising a deflector portion with a second radially outward facing, fluid deflecting surface. The second radially outward facing surface has a curvature profile designed to deflect a radial centripetal fluid flow into an axial fluid flow.

Abstract: A method for balancing a polyphase network for supplying an installation including a plurality of sockets for plugging-in electrical equipment, wherein a phase selector is inserted for each socket, between a system for supplying a polyphase voltage and the socket, and intercepts a command signal for energizing the socket. Once an energizing command has been received from one of the monophase equipments, the least charged phase is selected for powering the equipment, the evaluation of the least charged phase being carried out upstream of the system.

Abstract: A method implemented by computer for managing the recharging of a battery of an electric vehicle, comprises the steps of carrying out a recharging cycle of the battery of the electric vehicle; measuring the total energy stored by the battery; calculating the variance associated with the total energy; and determining a coefficient associated with the variance. In one development, the step of determining the coefficient associated with the variance is recursive. Various developments are described, which comprise the use of predefined and/or configurable thresholds, the emission of alarms, the use of white noise distributed according to a heavy-tailed law (e.g. Student) and the use of a Kalman filter. System and software aspects are described.

Abstract: An impeller designed to be mounted on a rotary shaft includes: a basic rim provided with blades protruding on one surface of the basic rim, and a hub capable of being coupled to the basic rim and to the rotary shaft. In certain embodiments, the impeller includes an annular plate and the hub, where the annular plate and the basic rim are configured to interact together so as to hold the basic rim axially and to maintain a freedom of radial deformation of the basic rim relative to the hub and to the annular plate.

Abstract: A load-balancing device includes a control module, and a converter for generating a voltage supplying a single-phase electrical load connected to a polyphase electrical network. The converter selectively modifies a phase shift between its output and phases of the polyphase electrical network. The control module controls synchronization of the output with a first phase of the network and its progressive phase shifting when it is synchronized with a second phase of the polyphase electrical network. It also controls connection of the load to the network and to the converter when the converter and first phase are synchronized. The control module maintains disconnection of the load from the network during the progressive phase shifting of the converter output voltage, and controls its connection the second phase of the network when its output is synchronized with the second phase.

Abstract: An impeller wheel assembly for a radial rotating machine, comprises a bladed hub portion of an impeller wheel, with a first radially outward facing, fluid deflecting surface having a curvature profile designed to deflect an axial fluid flow into a radial centrifugal flow, and comprising a deflector portion with a second radially outward facing, fluid deflecting surface. The second radially outward facing surface has a curvature profile designed to deflect a radial centripetal fluid flow into an axial fluid flow.

Abstract: A method for balancing a polyphase network for supplying an installation including a plurality of sockets for plugging-in electrical equipment, wherein a phase selector is inserted for each socket, between a system for supplying a polyphase voltage and the socket, and intercepts a command signal for energizing the socket. Once an energizing command has been received from one of the monophase equipments, the least charged phase is selected for powering the equipment, the evaluation of the least charged phase being carried out upstream of the system.

Abstract: A load-balancing device includes a control module, and a converter for generating a voltage supplying a single-phase electrical load connected to a polyphase electrical network. The converter selectively modifies a phase shift between its output and phases of the polyphase electrical network. The control module controls synchronization of the output with a first phase of the network and its progressive phase shifting when it is synchronized with a second phase of the polyphase electrical network. It also controls connection of the load to the network and to the converter when the converter and first phase are synchronized. The control module maintains disconnection of the load from the network during the progressive phase shifting of the converter output voltage, and controls its connection the second phase of the network when its output is synchronized with the second phase.