Abstract

Safety carabiner to attach a safety rope (18), comprising a frame (6) and a swing gate (8) with an open state, in which the carabiner can be attached to and removed from the rope (18), and a closed state, in which the carabiner cannot be attached to or removed from the rope (18), wherein an electrical locking system is provided to lock the swing gate (8) in the closed state to the frame (6), and to release the swing gate (8) in the open state.

IPC Classes  ?

• F16B 45/02 - Hooks with pivoting closing member

Abstract

A modular display apparatus is provided. The modular display apparatus includes a plurality of display modules, a single connector on every display module for serial type connection to a single raster image processor configured to crop portions the image to be displayed into sub images, addressed to individual display modules. The exact position, orientation in space and unique address information of every individual display module is determined by digital optical recognition of a digital control image of the entire display module configuration after the plurality of display modules are mechanically assembled into a large screen and electrically connected.

IPC Classes  ?

• G09G 3/32 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
• G06F 3/14 - Digital output to display device
• G09F 9/302 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements

Abstract

Doubly fed induction electric generator, comprising a stator (2) with at least three stator windings (19), a rotor (3) with at least three rotor windings (18), wherein the stator (2) is adapted to induce electromotive force (EMF) into the rotor (3) during operation of the generator, a rotor controller (11) which is attached at the rotor (3) and adapted to operate a pitch control system (6) of the rotor (3), wherein it further comprises a stator controller (12) that is connected to the rotor controller (11) over a wireless data link, wherein the stator (2) is directly connected to 3-phase mains (16) over a main switch (1), which can be operated by the stator controller (12), wind power generator comprising such generator, and methods to operate said wind power generator.

IPC Classes  ?

• H02P 9/08 - Control of generator circuit during starting or stopping of driving means, e.g. for initiating excitation

Abstract

Electric motor, in particular induction motor, comprising a stator, a rotor and a control device which is arranged at the rotor. The three rotor windings are connected to a Rotor Control device with inverter and controller unit mounted on the rotor. A capacitor is placed in the DC link. The capacitor is supplied from the EMF induced in the rotor. The current in the rotor windings is advanced in order to achieve a 90 degree phase shift between rotor current and stator MMF vector. To achieve this the frequency and amplitude of the rotor current as well as the phase shift can be varied. Wherein the frequency of the rotor inverter is matching the slip frequency.

IPC Classes  ?

• H02P 23/08 - Controlling based on slip frequency, e.g. adding slip frequency and speed proportional frequency
• H02P 9/00 - Arrangements for controlling electric generators for the purpose of obtaining a desired output
• H02P 23/20 - Controlling the acceleration or deceleration

Abstract

Electric motor, in particular induction motor, comprising a stator, a rotor and a control device which is arranged at the rotor. The three rotor windings are connected to a Rotor Control device with inverter and controller unit mounted on the rotor. A capacitor is placed in the DC link. The capacitor is supplied from the EMF induced in the rotor. The current in the rotor windings is advanced in order to achieve a 90 degree phase shift between rotor current and stator MMF vector. To achieve this the frequency and amplitude of the rotor current as well as the phase shift can be varied. Wherein the frequency of the rotor inverter is matching the slip frequency.

IPC Classes  ?

• H02P 23/08 - Controlling based on slip frequency, e.g. adding slip frequency and speed proportional frequency
• H02P 9/00 - Arrangements for controlling electric generators for the purpose of obtaining a desired output
• H02P 23/20 - Controlling the acceleration or deceleration

Abstract

Electric machine comprising a stator and a rotor, wherein the rotor is adapted to rotate relatively to the stator, and wherein the rotor comprises a rotor-switching- device which is arranged at the rotor.

IPC Classes  ?

• H02K 19/12 - Synchronous motors for multi-phase current characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing
• H02K 19/26 - Synchronous generators characterised by the arrangement of exciting windings
• H02K 19/32 - Synchronous generators characterised by the arrangement of exciting windings for pole-changing
• H02K 99/00 - Subject matter not provided for in other groups of this subclass
• H02K 3/28 - Layout of windings or of connections between windings
• H02K 17/22 - Asynchronous induction motors having rotors with windings connected to slip-rings
• H02K 17/26 - Asynchronous induction motors having rotors or stators designed to permit synchronous operation