A motor assembly includes a three-phase asynchronous machine equipped with three stator phases, a capacitor assembly to establish self-excited generator operation of the asynchronous machine, a load resistor assembly to establish resistive load for self-excited generator operation of the asynchronous machine, and a load resistor switch which is arranged to connect the load resistor assembly to the stator phases. The load resistor assembly is asymmetrical.

A motor assembly includes a three-phase asynchronous machine equipped with three stator phases, a capacitor assembly to establish self-excited generator operation of the asynchronous machine, a load resistor assembly to establish resistive load for self-excited generator operation of the asynchronous machine, and a load resistor switch which is arranged to connect the load resistor assembly to the stator phases. The load resistor assembly is asymmetrical.

An electrically driven winch device includes a winch drum, a plurality of axial-gap electric motors, and a drive shaft. The winch drum rotates around a drum axis in order to wind or unwind a work rope. The plurality of electric motors are electric motors configured to drive the winch drum to rotate, and are each provided with a stator, and rotors which rotate around a rotation axis and are disposed at an axial distance from the stator. The drive shaft is disposed coaxially with the drum axis and serially connects the rotors of the plurality of electric motors on the rotation axis.

A piloting system for piloting a crane in work, including at least: a piloting interface, a control-command system connected to the piloting interface, work actuators ensuring the displacements of the load, and variable-speed drives connected to the control-command system and to the work actuators to receive piloting commands originating from the control-command system and to transmit to the work actuators speed setpoints. At least one amongst the variable-speed drives, referred to as the common variable-speed drive, is connected to at least two work actuators, referred to as the shared actuators, by a distribution relay, so that the common variable-speed drive alternately pilots each of the shared actuators.

The present disclosure relates to an inverter provided in a hoist system, which includes a scale unit configured to control a size of a DC link voltage of the inverter, a proportional-integral (PI) controller configured to perform PI-control on an output of the scale unit and an output voltage of the inverter and outputting a control signal, a first calculating unit configured to sum a command frequency of the inverter and the control signal, and a voltage determining unit configured to determine an output voltage of the inverter from an output frequency of the first calculating unit.

The present disclosure relates to an inverter provided in a hoist system, which includes a scale unit configured to control a size of a DC link voltage of the inverter, a proportional-integral (PI) controller configured to perform PI-control on an output of the scale unit and an output voltage of the inverter and outputting a control signal, a first calculating unit configured to sum a command frequency of the inverter and the control signal, and a voltage determining unit configured to determine an output voltage of the inverter from an output frequency of the first calculating unit.

A method and system for controlling an actuator, in particular an actuator of a winch, a hoist or a crane, wherein the actuator is controlled using a fail-safe control unit. In order to improve a corresponding method, according to the invention, set point values are calculated in the fail-safe control unit, on the basis of which values the actuator is controlled.

An electrically driven winch device includes a winch drum, a plurality of axial-gap electric motors, and a drive shaft. The winch drum rotates around a drum axis in order to wind or unwind a work rope. The plurality of electric motors are electric motors configured to drive the winch drum to rotate, and are each provided with a stator, and rotors which rotate around a rotation axis and are disposed at an axial distance from the stator. The drive shaft is disposed coaxially with the drum axis and serially connects the rotors of the plurality of electric motors on the rotation axis.

An allocation method for allocating an available maximum power from at least one power supply source to electrical equipment of a crane, in which the electrical equipment are powered with the available maximum power, includes selecting between: a raw mode in which the available maximum power is allocated over predefined actuation equipment and on accessory equipment predefined among the electrical equipment, the actuation equipment being defined according to a configuration of the crane, and an optimized mode in which the available maximum power is allocated over the predefined actuation equipment, and also over the accessory equipment but according to the cut-off conditions of the accessory equipment, so that according to the cut-off conditions the actuation equipment are powered or not.

An allocation method for allocating an available maximum power from at least one power supply source to electrical equipment of a crane, in which the electrical equipment are powered with the available maximum power, includes selecting between: a raw mode in which the available maximum power is allocated over predefined actuation equipment and on accessory equipment predefined among the electrical equipment, the actuation equipment being defined according to a configuration of the crane, and an optimized mode in which the available maximum power is allocated over the predefined actuation equipment, and also over the accessory equipment but according to the cut-off conditions of the accessory equipment, so that according to the cut-off conditions the actuation equipment are powered or not.