Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a transformer coil including a conductive winding enclosed in a resin by means of a mold including two tubular inner mold parts and one outer mold part with a length being at least the sum of the length of the inner mold parts. SOLUTION: The method includes the steps of winding a first conductor around a first inner mold part of the inner mold parts, winding a second conductor around a second inner mold part of the inner mold parts, joining one end of the first inner mold part to one end of the second inner mold part forming a sealed joint between the mold parts, connecting electrically the first and second conductors forming one winding, arranging the joined inner mold parts with the winding in the outer mold part, enclosing the winding between the inner and outer mold parts, filling resin into the space enclosed between the mold parts, letting the resin cure, and removing the mold parts. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a tap changer facilitating access to a measuring point for measuring a contact sequence in the tap changer. SOLUTION: The tap changer 4 includes a cylinder 1 and a shaft 2 that is rotatably arranged inside the cylinder; the cylinder 1 is provided with fixed contacts; the shaft 2 is provided with a contact circuit extending toward the cylinder 1 and including mechanical contacts; the mechanical contacts are structured to selectively mate with the fixed contacts of the cylinder 1 upon rotation of the shaft 2; the contact circuit also includes at least two measuring points for measuring the function of the contact circuit. The tap changer 4 includes at least one measuring contact device 140-142, which is electrically connected to the respective measuring points in the contact circuit, and the measuring contact device 140-142 is arranged inside the shaft 2. This facilitates access to the measuring points of the tap changer 4. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
A gripping head(1), a gripping system and a gripping method are disclosed. The gripping head(1) including a holding device(10) for applying holding force to a first part(P1), an acoustic pressure measurement device(11) for measuring a first acoustic pressure level of a first acoustic wave(W1) propagating from the first part(P1) resulted from a second acoustic pressure of a second acoustic wave(W2) ex-erted by an acoustic transducer against the first part (P1) held by the holding device (10), and a controller(12) for judging a contact of the first part(P1) with an second part(P2) using the measurement of the first acoustic pressure level output from the aco-ustic pressure measurement device(11). It is possible to detect contact of assembly p-arts(P1,P2) by measuring the acoustic pressure level of acoustic wave(W1,W2) tran-smitted from the gripped assembly part(P1,P2).
Abstract:
Systems, apparatus, and methods are disclosed for emergency lighting and evacuation. A building may include several emergency lighting stations in which at least some, if not all, of the lighting station includes a lighting device, a motion sensor, a speaker, a video camera, and a wireless access point. A controller adapter may provide power to and communicate with the lighting stations via Power-over-Ethernet (PoE) connections. A central controller may communicate with the controller adapter to control the emergency lighting stations through the PoE connections.
Abstract:
A unique system may include a power absorber; an electrical machine coupled to the power absorber and operative to supply mechanical power to the power absorber; a drive coupled to the electrical machine and operative to supply electrical power to drive the electrical machine; and a controller communicatively coupled to the drive. The controller may be configured to execute program instructions to selectively vary a control voltage while maintaining a given torque output of the electrical machine, and to determine, based on varying the control voltage, a minimum current required for the electrical machine to maintain the given torque output.
Abstract:
A transformer-less static synchronous series compensator (SSSC) for an AC electrical power transmission system having a transmission line carrying an AC current and a method for protection against electrical damage are provided. The transformer-less SSSC including: a voltage source converter (100) having a DC input and an AC output and being configured to generate an alternating voltage with controllable magnitude and controllable phase angle across the AC output, the AC output being configured to inject the generated alternating voltage into a phase of the transmission line; a filter circuit (101) being arranged coupled with the voltage source converter (100) in parallel across the AC output of the voltage source converter (100); a bypass circuit (102); and an electrical current limiting circuit (103) being coupled with the bypass circuit (102) in series; wherein: the series-coupled current bypass circuit (102) and electrical current limiting circuit (103) are coupled with a first capacitive element (1011) of the filter circuit (101) in parallel. The transient nature of the electrical current limiting circuit (103) will limit the increase in the current flowing through the thyristor of the bypass circuit (102) thus limit the current peak when the bypass circuit (102) is switched on. Consequently, the current limiting circuit (103) acts like limiting the current transients generated from the influences of both of the line fault current and the discharging current.
Abstract:
A method and device (200) of loop processing for an industrial process. The device (200) comprises: a pre-processing module (211), configured to pre-process a plurality of input process values (219a) based on a user predefined rule to obtain at least one processed process value, and a loop processing module (212) configured to perform a loop processing on the at least one processed process value. An automation device (200) in a standalone and simple design can be provided, achieving advanced control strategies and data processing at a low cost.