ABB
Zurich, Switzerland
Zurich, Switzerland

ABB is a multinational corporation headquartered in Zurich, Switzerland, operating mainly in robotics and the power and automation technology areas. It ranked 158th in the Forbes Ranking .ABB is one of the largest engineering companies as well as one of the largest conglomerates in the world. ABB has operations in around 100 countries, with approximately 150,000 employees in November 2013, and reported global revenue of $40 billion for 2011.ABB is traded on the SIX Swiss Exchange in Zürich and the Stockholm Stock Exchange in Sweden since 1999, the New York Stock Exchange in the United States since 2001, September 2005 on London Stock Exchange and in November 2005 on the Frankfurt Stock Exchange. Wikipedia.

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A frequency converter and a method of identifying synchronous inductances of a salient pole synchronous machine connected to a frequency converter having a current measurement in the intermediate voltage circuit. The method comprises providing a voltage pulse with a known magnitude to each phase of the salient pole synchronous machine with the frequency converter, measuring the current in the intermediate voltage circuit at the end of each voltage pulse, calculating for each provided voltage pulse the inverse value of inductance as the measured current divided by the magnitude of the voltage and by duration of the voltage pulse, and solving the synchronous inductances from the calculated inverse values of inductances


A method comprises storing (201), in an automated power conversion device (101), operational information on the usage of the automated power conversion device (101), and information on user-adjustable parameter settings of the automated power conversion device (101). A local terminal device (105) receives (203) the operational information and the information on the user-adjustable parameter settings from the automated power conversion device (101), and forwards (204) said information to a remote network node (109) via a communications network. The received information is analyzed (205) in the remote network node (109), and based on the analysis the remote network node generates (205) a recommendation on an optimal set of user-adjustable parameters regarding the automated power conversion device (101). The generated recommendation is transmitted (206) from the remote network node (109) and received (207) in the local terminal device (209).


A wide bandgap power semiconductor device comprises provided having at least one MOS cell (2, 2) between a first main side (10) and a second main side (15), wherein each MOS cell (2, 2) comprises a drift layer (4) of the first conductivity type, two well layers (5, 5) of a second conductivity type and two source layers (6, 6) of the first conductivity type, which are higher doped than the drift layer (4). On the first main side (10) at each MOS cell (2, 2) two gate electrodes (7, 7) are arranged, wherein an area between the two gate electrodes (7, 7) defines a source opening (20, 20). In the at least one MOS cell (2) at the source opening (20) a hetero-junction layer (8) consisting of a polycrystalline silicon layer is arranged between the two well layers (5, 5), wherein the hetero-junction layer (8) has a hetero-junction layer depth (80), which is at least as deep as the well layers (5, 5).


Patent
Abb | Date: 2017-09-27

This invention discloses a motor drive of electrical apparatuses which drives medium and high voltage switch disconnectors, circuit breakers, disconnectors, and earthing switches. The drive disclosed in the invention is characterized in that a system of reduction transmissions comprises a worm transmission (2) and a cycloidal transmission (3) located in a common housing (4). The axis of the output shaft (14) of the drive is situated centrically on the axis of a wormwheel (8) of the worm transmission (2), in the axis of the output gear (11) of the cycloidal transmission (3) and in the axis of a revolving eccentric bush (9). The wormwheel (8) of the worm transmission (2) is mounted immovably on the revolving eccentric bush (9) on which there is mounted rotatably a gear wheel (10) of the cycloidal transmission (3) whose output gear (11) is coupled with a slidable bush (12) of a disengaging coupling (13) mounted on the free end (14b) of the output shaft of the drive (14).


The present disclosure relates to a method of determining fault conditions in an electrical machine by means of end winding vibration measurements. The method comprises obtaining (S1) a vibration measurement from an end winding sensor arranged on an end winding of the electrical machine, and configured to measure vibrations of the end winding, frequency transforming (S2) the vibration measurements to obtain a frequency spectrum of the vibration measurement, comparing (S3) the frequency spectrrum with reference frequency spectra, and determining (S4) whether a fault condition is present in an active shaft region of the electrical machine based on the comparison between the frequency spectrum and the reference frequency spectra.


Patent
Abb | Date: 2017-09-27

A filter device (2) for improving quality of electricity, the filter device (2) comprising a first terminal (T1) for connecting the filter device (2) to a first portion of an alternating-current network, a second terminal (T2) for connecting the filter device (2) to a second portion of the alternating-current network, the filter device (2) being adapted to carry alternating current between the first terminal (T1) and the second terminal (T2), inductor means connected in series between the first terminal (T1) and the second terminal (T2), and filter capacitor means adapted to co-operate with the inductor means for filtering an alternating current present between the first terminal (T1) and the second terminal (T2). The filter device (2) comprises a capacitor switch device (S3) for disconnecting the filter capacitor means from the inductor means.


Patent
Abb | Date: 2017-09-20

The present invention relates to a coil actuator (1) for low and medium voltage applications, which comprises a electromagnet (2) operatively associated with a movable plunger (8), a power & control unit (3) electrically connected with said electromagnet (2) and first and second input terminals (T1, T2) operatively connected with said power & control unit, wherein an input voltage (VIN) is applied between said first and input terminals during the operation of said coil actuator. The said power & control unit is adapted to provide subsequent launch pulses of drive current (IC) to said electromagnet (2), which are separated in time by at least a predetermined time interval (TI), in response to subsequent transitions of said input voltage (VIN) from values lower than said first threshold voltage (VTH1) to values higher than said first threshold voltage.


Patent
Abb | Date: 2017-09-20

The present invention relates to a coil actuator (1) for low and medium voltage applications, which comprises a electromagnet (2) operatively associated with a movable plunger (8), a power & control unit (3) electrically connected with said electromagnet (2) and first and second input terminals (T1, T2) operatively connected with said power & control unit, wherein an input voltage (VIN) is applied between said first and input terminals during the operation of said coil actuator. The coil actuator further comprises a third input terminal (T3) operatively connected with said power & control unit, said third input terminal being adapted to be in a first operating condition (A), which corresponds to normal control conditions (NDC) for the operation of said electromagnet, or in a second operating condition (B), which corresponds to overriding control conditions (ODC) for the operation of said electromagnet. The power & control until is adapted to control the operation of said electromagnet according to said normal control conditions or said overriding control conditions depending on the operating condition (A, B) of said third input terminal.


Patent
Abb and Audi AG | Date: 2017-09-13

A semiconductor module (10) comprises a semiconductor device (14); a substrate (12), on which the semiconductor device (14) is attached; a molded encasing (42), into which the semiconductor device (14) and the substrate (12) are molded; at least one power terminal (24) partially molded into the encasing (42) and protruding from the encasing (42), which power terminal (24) is electrically connected with the semiconductor device (14); and an encased circuit board (30) at least partially molded into the encasing (42) and protruding over the substrate (12) in an extension direction (E) of the substrate (12), wherein the encased circuit board (30) comprises at least one receptacle (38) for a pin (40), the receptacle (38) being electrically connected via the encased circuit board (30) with a control input (36) of the semiconductor device (14).


The present disclosure describes a two-stage method for estimating an angle offset of an angle sensor in a system comprising a permanent-magnet synchronous motor. An initial value for the estimated angle offset is first determined with a short-circuit test. Next, a torque of the motor may be controlled so that the motor is maintained at a zero speed. Minor adjustments are made to the value of the angle offset to find a minimum magnitude of stator current. A value at which the stator current is at its minimum is used as a final angle offset.

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