Abstract: An electrical machine (10), in particular a generator, comprises a rotor (12) with pole zones, in which pole zones amortisseur bars (15) designed as wedges are arranged, which amortisseur bars (15), on the outside of the rotor (12), are pushed into slots (14) provided for this purpose and running in the longitudinal direction and are held in the slots (14) by supporting means (28) against the centrifugal forces occurring during rapid rotation of the rotor (12) and which are connected to one another in an electrically conductive manner at the ends of the rotor (12) by an amortisseur ring (18) or amortisseur segments (17), which enclose the rotor (12) in an annular or ring-section-shaped manner.

Abstract: In a method for stabilizing a power supply network against fluctuations of the reactive power of an electrical system, in particular of an arc furnace (5), having at least one transformer (3), the at least one transformer (3) is switched on and off on the supply network side in switching sequences which result in a fundamental-frequency power factor with a value at least approximately equal to 1. The fundamental-frequency reactive power is thus at least approximately equal to zero.

Abstract: A combustion plant for a combustion process is disclosed. The plant has a pressurized combustion chamber (1), which encloses a fluidized bed and in which combustion of a fuel is to take place while producing combination gases, a gasifying device (40), which is arranged to produce a combustible gas and a degassed combustible product, and a transportation device (6, 44) for discharging the product from the gasifying device (40) and supplying it to the combustion chamber (1) for combustion of the product in the combustion chamber. The transportation device has a discharge conduit (44) connected to the gasifying device (40) and is arranged to discharge the product from the gasifying device (40). The discharge conduit (44) has a cooling member (45), which is arranged to cool the product discharged from the gasifying device (40), and a pneumatic supply conduit device.

Abstract: An iron aluminide coating as a bonding layer between a thermally stressed element of a thermal turbomachine and a heat insulation coat consists essentially of:  5-35 % by weight aluminum 15-25 % by weight chromium 0.5-10  % by weight molybdenum, tungsten, tantalum and/or niobium   0-0.3 % by weight zirconium 0-1 % by weight boron 0-1 % by weight yttrium the remainder being iron and incidental impurities arising from production thereof.

Abstract: A sea electrode (15) for grounding of a high voltage direct current transmission system comprises an electrically conducting electrode body (1) for connection to the transmission system and at least one ballast (4) located above the electrode. The electrode further comprises a layer (5) of an electrically non-conducting material, located above the electrode body and extending over it, so as to influence the maximum electrical field strength not to exceed a desired level at a point (P) at the edge of the non-conducting layer and thereby also in the sea water outside a zone (35) located below the non-conducting layer and in a vertical direction limited by the edge of the non-conducting layer.

Abstract: The sheet-metal casing comprises at least two sheet-metal parts (1, 2) and has a plastic seal (9) arranged in between. A first sheet-metal part (1) is folded over along the seal (9) to form a fold (10) and comes into contact with the second part (2) in such a way that, in addition to the fold (10), a gap (13) for accommodating the seal (9) forms. The fold (10) ensures good electrical contact between the two parts (1, 2) and thus good screening. At the same time, it defines the width of the gap (13), so that the seal (9) is subjected to defined compression.

Abstract: Described is a turbine blade with a metal blade body and a protective coating constructed of a porous intermetallic felt, and in the blade body of the turbine blade cooling air channels are constructed that end at the intermetallic felt in order to supply it with cooling air. The intermetallic felt is based on an iron or nickel aluminide alloy with mixing ratios of Fe:Al or Ni:Al of approximately 50:50, and that the protective coating has cooling channels that are facing the blade body and end in the area of the cooling channels. The design of the turbine blades permits their cooling with a smaller amount of cooling air, and, due to improved aerodynamics and a lower cooling air supply, the degree of effectiveness of the turbine is significantly increased.

Abstract: The object of the invention is to create a centrifugal compressor with a cooling appliance which is simpler but more effective. This is achieved by the feed device (27) for the gaseous cooling medium (31) opening into the separating gap upstream of the mainly radially extending gap region (20) of the separating gap (18).

Abstract: A power station (10) includes a generator (13) which is driven by a turbine (11). The power station produces electrical power and outputs the electrical power to a network (17) via a generator switch (14). An electrical standby load (18) is also provided. When a network fault occurs, the generator is disconnected from the network by the generator switch and connected to the electrical standby load. The electrical standby load emulates the real load of the network that was present prior to the network fault, so that the voltage of the generator is stabilized at a constant phase difference or phase angle with respect to the voltage of the network that was present prior to the network fault. Alternatively, the value of the electrical standby load is adjusted during isolation of the generator from the network, to track the network while the generator is disconnected from the network and match the voltage phase angle of the generator to the network.

Abstract: An electric switching device comprises a quick mechanical electric switch and an irradiation source and at least one switching element sensitive to irradiation and adapted to create an electrically well conducting current path by-passing the electric mechanical switch upon irradiation thereon through the irradiation source, but assuming an electrically insulating state in absence of irradiation thereon. The quick mechanical electric switch is capable of being quickly de-ionized after extinction of an electric arc created therein upon separation of the contacts of the mechanical switch.

Abstract: In a generator with a cooling system which draws in, from the generator, cooling medium heated by the heat-generating elements of the generator and which guides the hot cooling medium to at least two cooling units (23), which cooling units (23) operate in parallel and cool the cooling medium before it is led back to the heat-generating elements of the generator, operation substantially uninfluenced by failures of the cooling units (23) is made possible by means being provided which mix together the cooling medium flows (31) flowing from the different cooling units (23) after they emerge from the cooling units (23) and before they are supplied to the heat-generating elements of the generator.

Abstract: The section of an electrical high-voltage system has a gas-filled housing of predominantly symmetrical design. Provided in the housing are a conductor extending along a plane of symmetry of the housing, and cooling means for producing a circulation flow which dissipates heat loss from the conductor. The cooling means contains two blowers. The blowers are arranged in the interior of the housing and designed in such a way that, during the operation of the system, two mirror-symmetrical circulation part flows are formed which are bounded by the plane of symmetry. These circulation part flows are in each case guided without recirculation along a housing side wall from the top of the housing or the bottom of the housing. By this means, the heat loss is given up particularly effectively to the housing side walls, and the conductor can be loaded with very high operating currents.

Abstract: A condensation system for the condensation of turbine exhaust steam has a condenser installation (25) in which a surface condenser (30) and a direct-contact condenser (35) work in combination. In this case, the two condensers (30, 35) are either arranged in a single common housing or are each arranged in a separate housing. In one embodiment, the condenser installation (25) is connected in a circulation circuit for the cooling media to a wet-dry cooling tower or hybrid cooling tower (40). In this case, the cooling water of the surface condenser (30) is recooled in the wet part (42) and the cooling condensate of the direct-contact condenser (35) is recooled in the dry part (41) of the hybrid cooling tower (40).

Abstract: A method and a device for non-contacting measurement of the measures and position of objects of electrically conductive materials based on electromagnetic induction is provided. A measuring object, a transmitter coil and a receiver coil are placed in relation to each other such that a time-varying magnetic field generated by the transmitter coil at a measuring region of the measuring object is substantially parallel to the surface of the measuring region. The receiver coil is placed such that a conceived field line which touches the measuring region in its extension reaches the receiver coil. On the basis of the voltage induced in the receiver coil, the position and dimensions of the measuring region relative to a given reference point can be calculated.

Abstract: A tubular core (6) for a controllable inductor with a main winding (1) surrounding the core and a control winding (7) passing substantially axially through the core. The core (6) is capable of receiving a magnetic flux from the main winding (1) running substantially axially therethrough and having a plurality of core rings (8) stacked co-axially on top of each other and connected to a rigid unit. The core rings (8) are connected to each other forming a walled construction. The core (6) also has an inner envelope (18) with an outer cross-section that is substantially equal to the inner cross-section of the core ring walled construction. The walled construction has joints (16) between the core rings (8) in an axial direction which are overlapped by a part of the envelope (18).

Abstract: A device for holding and guiding a cable assembly (11) between a first manipulator part (2) and a second manipulator part (3), which is movable in relation to the first part. The device comprises a cable assembly carrier (17) which is attached to the first manipulator part and which is elongated and tubular and that the cable assembly runs longitudinally through the cable assembly carrier. From an initial position, the movement of the cable assembly is influenced by a returning force.

Abstract: A rotary atomizing head type coating machine which is arranged to prevent occurrence of spark discharges, including a rotational shaft (9) which is formed of an insulating material, a rotary atomizing head (11) which is likewise formed of an insulating material and mounted on a fore end portion of the rotational shaft (9). An on-head semi-conductive coat film (14) is formed on outer peripheral surfaces of the rotary atomizing head (11). On the other hand, a first arcuate coat film (16) is formed on a first limiter ring (15) which is provided on a motor body (6), and a second arcuate coat film (18) is formed on a second limiter ring (17) which is provided on the rotary atomizing head (11). Further, a power supply semi-conductive coat film (19) is formed on and around outer peripheral surfaces of the rotational shaft (9) between the arcuate coat films (16) and (18).

Abstract: The invention specifies a disconnector for decoupling a load from a supplying AC power supply system. The disconnector comprises a transformer whose primary is connected into the AC power supply system. On the secondary side, a rectifier circuit is provided which has a turn-off thyristor connected to it. In normal operation, the turn-off thyristor is kept closed, so that the power supply system supplies the load. In the event of power supply system faults or interruptions, the turn-off thyristor is opened, which disconnects the power supply system from the load owing to the transformer impedance.

Abstract: A method for control of an industrial robot, which has a plurality of movement axes with a position sensor for each of said axes which is adapted to deliver an output signal which defines the current position of the axis, and a control system for control of the axes of the robot. Continuously during operation of the robot for at least one mechanically critical point (i) of the robot, the relevant load (&tgr;i) during a predetermined period of time (&Dgr;t) is calculated on the basis of the output signals (&phgr;1,&phgr;2 . . . &phgr;6) from the position sensors and a mathematical model of the robot.

Abstract: An automatically resetting safety valve for a generator circuit breaker is to open rapidly and wide, even if the pressure applied to a valve-closing body (1) does not increase substantially over a valve stroke (a) or even falls. In order to ensure this, a valve-closing-body joint (10) of the valve-closing body (1) via a first closing-body lever (H1) and via a first sliding joint (3), is connected in an articulated manner to a first support lever (H2), which is rotatably mounted in a first support lever joint (4) fastened to a lever wall (5). The first sliding joint (3), via a first compression spring (8), is in compressive connection with a spring wall joint (7) fastened to a spring wall (6). The valve-closing body (1) is movable along a plain-bearing axis (A). First and second closing-body levers (H1, H1′) and first and second support levers (H2, H2′), which are arranged in mirror image relative to the plain-bearing axis (A) of the valve-closing body (1), may be provided.