Abstract:
The object of the present invention is to provide an inventive multiphase transformer rectifier unit (1) for converting a three-phase (R, S, T) alternating current (AC) supplied from a power distribution system (2) to direct current (DC) supplied to at least one load (3). The multiphase transformer rectifier unit (1) comprises a magnetic core (5) having a primary winding set (17) and secondary winding set (18), and a rectifier circuit (22). The secondary winding set (18) is arranged to generate N substantially equally distributed output phases, wherein N is an odd number multiple of 3, and N > 3, and the primary winding set (17) is arranged to provide a positive or negative phase shift equal substantially to 360/(8x N ) degrees of said output phases. By connecting two such multiphase transformer rectifier units (1) to the three- phase power distribution system, one thereof with changed order of connection of the input phases, the number of output pulses from the combination of two multiphase transformer rectifier units (1) will appear as doubled compared with a single inventive multiphase transformer rectifier unit (1) due to interleaved pulses from the two multiphase transformer rectifier units (1), thus reducing current distortion. It is also the object of the present invention to provide a corresponding inventive method of an arrangement of two inventive multiphase transformer rectifier units (1) for reducing current distortion in the power distribution system (2).
Abstract:
The present invention relates to a method and device for comparing a first product or service or solution with a second product or service or solution with regard to at least environmental impact during a selected time frame. The device comprises a tool (100) connected to a user input device (101). The tool comprises information related to a plurality of activities having an environmental impact related to the first product or service or solution. The activities are selectable by means of the user input device (101). The tool comprises processing means arranged to determine at least one indicator value related to at least environmental impact for each selected activity of the first product or service or solution based on data stored in the tool and based on data fetched from databases. The tool comprises information related to a plurality of activities having an environmental impact related to the second product or service or solution, said activities being selectable by means of the user input device (101) The processing means are further arranged to determine at least one indicator value related to at least environmental impact for each selected activity of the second product or service or solution based on the data stored in the tool and based on the data fetched from databases. The processing means are further arranged to compare the indicator values for the first and second solutions.
Abstract:
The present invention relates to an avionics application host system and method for simulating and/or testing a number of partitioned applications (Al- A4) arranged to be periodically executed on a target system, wherein the target system is a distributed avionics control system of an aerial vehicle (1). The host system comprises a number of functional modules. The number of functional modules comprises: an application module (146) arranged to import said number of partitioned applications (A1-A4) in un-modified form, a configuration module (145) arranged to configure the operations of the host system at least one communication module (142) arranged to provide communication between the partitioned applications, a control module (140) arranged to provide coordinated execution time to the functional modules, a service module (150) associated to each imported partitioned application (A1- A4) arranged to provide services to the imported partitioned applications (A1- A4) so as to enable execution of the imported partitioned applications (A1-A4) and to preserve the temporal order of events related to communication and execution.
Abstract:
The present invention relates to a method for configuring synchronous table- driven operations of a distributed avionics control system comprising a plurality of processing nodes (S1-S4) interconnected in a network (2). The method comprises the steps of providing a global timing meta-data component (X4), a plurality of application meta-data components (X51-X52), and a node assignment meta-data component (X 2). The method also comprises the steps of detecting data communication paths, detecting communication requirements, generating a system schedule meta-data component, generating a system configuration data and providing the system configuration to the distributed avionics control system.
Abstract:
The present invention relates to the field of digital media recording such as video or audio, where compression is used to reduce the amount of data to save onto a data storage.In particular the invention relates to recording media, wherein the memory area required to store the media is unknown. The invention discloses a method for recording digital streamed media with a number of media frames in a memory by encoding each media frame into an encoded frame comprising a first number of sets of data, representing different characteristics of the media stream. The invention further relates to detecting if the data storage is full and if the data storage is full, storing new frames in the data storage previously occupied by the data sets representing the least prioritized characteristics of the previously stored encoded frames. The invention also relates to a corresponding media recorder and computer program.
Abstract:
A hull inspection system useable for inspecting a hull of a maritime vessel passing a water volume at a first velocity, the system comprising: - pulse emitting means, for being placed in the water volume and for emitting energy pulses into said water volume; - sensing means, for being placed in the water volume, and being connected to the pulse emitting means, for sensing and measuring travelling time of energy pulses reflected by the passing vessel; - a sensor data processing unit; connected to the sensing means, for processing data from the sensor means; - a vessel data furnishing unit, connected to the sensor data processing unit, for providing vessel velocity data to the sensor data processing unit; wherein a three-dimensional representation of the hull of the maritime vessel is created based on data acquired by a procedure involving combination of data from a number of consecutive sensing means linear scans, and wherein the consecutive linear scans are acquired at consecutive moments in time, thereby enabling creation of a three dimensional representation of the hull.
Abstract:
The present invention relates to a three dimensional model method based on combination of ground based images (54) and images (44) taken from above. According to the invention an existing 3D model (46) based on images (44) taken from above is matched with images (54) taken from ground level, all images comprising information about position and attitudes of the camera when the images (54) from ground level and the images (44) taken from above were taken and direction of each pixel. The method offers an automatically carried out imaging solving or at least mitigating occlusion problems.
Abstract:
The invention regards a de-icing/anti-icing system comprising at least two conductive structures (3', 3") embedded in an article (2), which includes an outer surface (5) being designed as an aerodynamic surface, at least one of the conductive structures (3'f 3") is arranged adjacent the outer surface (5), a control unit (39) is adapted to control the energy supply to the conductive structures (3', 3") for generating heat to the outer surface (5) One conductive structure (31) comprises a first conductive nano structure (19'), the conductive structure's (3') conductive property differs from the conductive property of the other conductive structure (3") comprising a second conductive nano structure (19").
Abstract:
The object of the present invention is to provide an inventive high power electrical distribution system for distribution high power to at feast one consumer (12) arranged on a rotatable element (3), wherein said distribution system comprises: at least one high frequency alternating current HFAC generator (4) configured to generate HFAC, a rotary power transformer (2) connected to said at least one HFAC generator (4), wherein said rotary power transformer (2) includes a stationary part (7) and a rotatable part (8), and is configured to receive HFAC from said at least one HFAC generator (4), and to couple HFAC electrical energy from said stationary part (7) to said rotatable part (8), and at least one high power distribution bus (11 ) located on said rotatable element (1), and configured to receive HFAC from said rotary power transformer (2) and to distribute HFAC to said at least one consumer (12).
Abstract:
The invention relates to helicopters with removable fuel tanks, wherein all fuel tanks of the helicopter are removable fuel tanks. Helicopters all fuel tanks of which are removable can safely be stored on ships and aircraft carriers.