Abstract: A power converter includes first and second DC terminals between which the power converter is operable to generate a voltage difference. The power converter also includes a control unit that is configured to operate in a normal mode during normal operation of the power converter and in a fault mode when a fault occurs in a respective DC power transmission medium that is operatively connected in use to one of the first or second DC terminals. The control unit in the normal mode generates a normal operating voltage difference between the first and second DC terminals. The control unit in the fault mode generates a modified operating voltage difference between the first and second DC terminals while maintaining the respective voltage potential with respect to earth of the other of the first and second DC terminals. The modified operating voltage difference is lower than the normal operating voltage difference.

Abstract: A power transmission network, for interconnecting a variable power source and a AC electrical network including: a DC transmission link for power transmission between a network side converter and a source side converter; a AC transmission link for power transmission from the respective variable power source to a source side converter; a source side converter including: a DC connecting point operably connected to the respective transmission link; and an AC connecting point operably connected to the respective transmission link; a network side converter including: an AC connecting point for connection to the respective electrical network; and a DC connecting point operably connected to the respective transmission link; and a control system, where a network side converter is designated as a first converter, and the control system is configured to operate each first converter as a DC slack bus to vary a DC voltage at its DC connecting point.

Abstract: A drilling motor provides rotational force within a wellbore and includes a power section within the interior of the housing having sealing elastomers, a rotor positioned within the power section, and a passage within the rotor. The passage is configured to bypass a portion of the drilling mud from above the power section within the interior of the housing to below the power section within the interior of the housing, and a valve below the passage. The valve is configured to provide a closing force that closes the passage when the pressure from the pressurized drilling mud is less than a threshold pressure, and to pass drilling mud through the valve when the pressure from the pressurized drilling mud is greater than the threshold pressure.

Abstract: There is provided an electrical assembly for use in an electrical system. The electrical assembly comprises a DC path. The DC path includes: a DC power transmission medium; and a current commutation device, the current commutation device including a switching element and an energy absorbing element, the switching element arranged to permit a current flowing, in use, through the DC path to flow through the switching element and at the same time bypass the energy absorbing element, wherein the electrical assembly further includes a control unit programmed to selectively control the switching of the switching element to commutate the current directly from the switching element to the energy absorbing element in order to increase the resultant voltage drop caused by the flow of direct current through the DC path in which the current commutation device is connected and thereby oppose the flow of the current through the DC path.

Abstract: A power transmission network including: a variable power source; an AC transmission link for AC power transmission from the variable power source to at least one source side converter; at least one source side converter including: an AC connecting point operably connected to the AC transmission link; and a DC connecting point for connection to a DC transmission link; and a control system configured to operate the source side converter or at least one of the source side converters in a frequency damping mode to control an AC voltage at its AC connecting point and thereby damp at least one frequency component at its AC connecting point and/or in the AC transmission link.

Abstract: Compounds of formula (I): wherein X, Y, R1 and R3-R11 are as herein defined, and salts thereof are PAD4 inhibitors and may be useful in the treatment of various disorders, for example rheumatoid arthritis, vasculitis, systemic lupus erythematosus, ulcerative colitis, cancer, cystic fibrosis, asthma, cutaneous lupus erythematosis, and psoriasis.

Abstract: The present invention discloses apparatuses and methods for simultaneous viewing and reading top and bottom images from a workpiece. The present ID reader can comprise an enclosure covering a top and bottom section of the workpiece with optical elements to guide the light from the workpiece images to a camera. The optical element can be disposed to receive images from a high angle with respect to the surface of the workpiece. The present ID reader can further comprise a light source assembly to illuminate the image. The light source assembly can utilize a coaxial light path with the images, preferably for bright field illumination. The light source assembly can also utilize a non-coaxial light path, preferably for dark field illumination.

Abstract: There is provided an electrical assembly for use in a power transmission network. The electrical assembly includes a converter including terminals for connection to an electrical network, where the first terminal is a DC terminal. The assembly also includes a DC power transmission medium connected to the DC terminal, and a circuit interruption device including switching element(s) and an energy absorption element, each switching element being switchable to divert a flow of current in the DC power transmission medium through the energy absorption element in order to reduce the flow of current in the DC power transmission medium; The assembly also includes a converter control unit programmed to operate the converter to control a DC voltage at the DC terminal in a leakage current reduction mode to control a voltage across the energy absorption element.

Abstract: Compounds of formula (I) wherein; R1 is hydrogen or C1-6alkyl; R2 is hydrogen, C1-6alkyl, perhalomethylC0-5alkyl-O—, or C1-6alkoxy; R3 is hydrogen, C1-6alkyl, or C1-6alkoxyC1-6alkyl; R4 is hydrogen, C1-6alkyl, perhalomethylC1-6alkyl; or unsubstituted C3-6cycloalkylC1-6alkyl; A is C—R5 or N; B is C—R6 or N; D is C—R7 or N; with the proviso that at least one of A, B, and D, is N; R5 is hydrogen or C1-6alkyl; R6 is hydrogen or C1-6alkyl; R7 is hydrogen, C1-6alkyl, C1-6alkoxy, or hydroxy; R8 is hydrogen or C1-6alkyl, with the proviso that one of R4 and R8 is hydrogen; R9 is hydrogen or hydroxy; R10 is hydrogen or C1-6alkyl; and salts thereof are PAD4 inhibitors and may be useful in the treatment of various disorders, for example rheumatoid arthritis, vasculitis, systemic lupus erythematosus, ulcerative colitis, cancer, cystic fibrosis, asthma, cutaneous lupus erythematosis, and psoriasis.

Abstract: Compounds of formula (I) wherein; R1 is hydrogen or C1-6alkyl; R2 is hydrogen, C1-6alkyl, perhalomethylC0-5alkyl-O—, or C1-6alkoxy; R3 is hydrogen, C1-6alkyl, or C1-6alkoxyC1-6alkyl; R4 is hydrogen, C1-6alkyl, perhalomethylC1-6alkyl; or unsubstituted C3-6cycloalkylC1-6alkyl; A is C—R5 or N; B is C—R6 or N; D is C—R7 or N; with the proviso that at least one of A, B, and D, is N; R5 is hydrogen or C1-6alkyl; R6 is hydrogen or C1-6alkyl; R7 is hydrogen, C1-6alkyl, C1-6alkoxy, or hydroxy; R8 is hydrogen or C1-6alkyl, with the proviso that one of R4 and R8 is hydrogen; R9 is hydrogen or hydroxy; R1o is hydrogen or C1-6alkyl; and salts thereof are PAD4 inhibitors and may be useful in the treatment of various disorders, for example rheumatoid arthritis, vasculitis, systemic lupus erythematosus, ulcerative colitis, cancer, cystic fibrosis, asthma, cutaneous lupus erythematosis, and psoriasis.

Abstract: Attachment of an interchangeable grip sleeve particularly suited for golf requires three basic securing movements. In the first movement, the grip is situated and secured into place on the shaft by fastening toe components at the lower, distal portion of the grip onto the shaft using an insertion tool. In the second movement, heel components of the grip are positioned onto the shaft, by either rotational torque or downward pressure, optionally using a tightening tool, which results in securing the upper, proximal portion of the grip onto the shaft. In the third movement, once both heel and toe embodiments of the grip have been fastened to the shaft, the internal core diameter of the grip is decreased in order to secure the grip to the shaft, such as by rotating or twisting the entire grip body, wherein an internal mechanism maintains the grip body in the torqued or twisted position, thereby preventing the grip body from rotating back.

Abstract: A bipolar DC power transmission scheme including first and second DC poles, each including a respective DC power transmission medium extending between first and second ends; a plurality of converters wherein each end of the transmission medium of each of the poles is operatively connected to at least one of the converters to form a rectifier and an inverter at opposite ends of the DC power transmission media; and a controller to operate at least one converter of one of the rectifier and inverter in a control mode and at least one converter of the other of the rectifier and inverter in a second control mode in response to a fault occurring on either of the poles. Additionally, the first control mode decreases and the second control mode increases the operating DC voltage of the or each corresponding converter from a normal operating voltage value.

Abstract: A robot with improved cleanliness for use in a clean environment is disclosed, having a uniform flow through the open interface between the clean environment and the interior of the robot housing, passing the particle generation area to an exhaust port, keeping the particles from the clean environment. The uniform flow reduces or eliminates the back flow, and further allows the scalability of the open interface to prevent particles generated from moving mechanisms within the robot housing to contaminate the clean environment. The uniform flow can be established by designing the flow dynamic, centering the exhaust port, or by restricting the flow along the elongated slot, for example, by uniformly restricting the flow along the elongated slot, or by implementing a restrictor along the elongated slot.

Abstract: Removable and re-attachable grips design to allow simple, fast changing of grips on shaft. The present disclosure relates in general to a re-changeable or interchangeable grip particularly suited for golf whose attachment requires three basic securing movements. In the first movement, heel components of the grip are first positioned onto the shaft, by either rotational torque or downward pressure, which result in securing the upper, proximal portion of the gripping sleeve onto the shaft. In the second movement, once the grip is situated and secured into place on the shaft, the grip is centered on the shaft by fastening toe components at the lower, distal portion of the grip sleeve onto the shaft.

Abstract: A power transmission network comprises, an AC electrical system AC transmission link from the AC electrical system to at least one AC-DC converter which includes: an AC connecting point connected to the AC transmission link and a DC connecting point for connection to a DC transmission link and a control system configured to operate each AC-DC converter in an AC voltage control mode as an AC slack bus to control a magnitude and/or a frequency of an AC voltage of the AC transmission link at a or a respective steady-state value and facilitating a power transfer between its connecting points to accommodate power generated or supplied to the AC electrical system. The control system is further configured to operate each first AC-DC converter in a protection mode to protect each AC-DC converter from an overvoltage and/or an overcurrent.

Abstract: Removable and re-attachable grips design to allow simple, fast changing of grips on shaft. The present disclosure relates in general to a re-changeable or interchangeable grip particularly suited for golf whose attachment requires three basic securing movements. In the first movement, heel components of the grip are first positioned onto the shaft, by either rotational torque or downward pressure, which result in securing the upper, proximal portion of the gripping sleeve onto the shaft. In the second movement, once the grip is situated and secured into place on the shaft, the grip is centered on the shaft by fastening toe components at the lower, distal portion of the grip sleeve onto the shaft.

Abstract: A method of clearing a fault in a high voltage DC electrical network, including power converters interconnected by a DC power transmission, comprising: detecting a fault in the DC power transmission and reconfiguring each power converter to a fault blocking mode drinving the DC fault current towards zero; locating the fault and isolating a faulty portion from a healthy remaining portion; reconfiguring one of the power converters designated as a re-energising power converter from the fault blocking to re-energise the healthy remaining portion; and detecting a rise in the voltage level in the healthy remaining portion above a threshold level and reconfiguring the remaining power converter connected with the healthy remaining portion from the fault blocking to the normal power transmission.

Abstract: A power transmission network includes a plurality of converters. Each converter includes first and second electrical terminals, each first electrical terminal being connectable to an electrical network, each second electrical terminal being operatively connected to at least one other second electrical terminal. A first converter includes a first controller, the first controller configured to selectively operate the first converter to modulate a power flow at its first or second electrical terminal, and a second converter includes a second controller, the second controller being configured to selectively operate the second converter to modulate a power flow at its second electrical terminal to generate a power to compensate for an imbalance in power within the power transmission network caused by the modulation of power flow by the first converter, and thereby inhibit the modulation of power flow by the first converter from modifying a power flow in a third converter.

Abstract: A current flow controller (10) comprising: a plurality of terminals (12a, 12b, 14a, 14b) for connection, in use, to a plurality of DC power transmission medium (16,18) such that each DC power transmission medium (16,18) is connected to at least one of the plurality of terminals (12a, 12b, 14a, 14b); and a current flow control unit interconnecting the plurality of terminals (12a, 12b, 14a, 14b), the current flow control unit including a plurality of current flow control sub-units (20, 22, 23) each of which is, in use, connected to a respective DC power transmission medium (16, 18), each current flow control sub-unit (20, 22, 23) including at least one switching element (24, 28), the or each switching element (24, 28) of each current flow control sub-unit (20, 22, 23) being connected to the same energy storage device (26; 56) to selectively provide a voltage source, and a switching control unit (100) to control switching of each switching element (24, 28) of the current flow control unit to selectively inject a

Abstract: Compounds of formula (I): wherein; R1 is hydrogen or C1-6alkyl; R2 is hydrogen, C1-6alkyl, perhalomethylC0-5alkyl-O—, or C1-6alkoxy; R3 is hydrogen, C1-6alkyl, or C1-6alkoxyC1-6alkyl; R4 is hydrogen, C1-6alkyl, perhalomethylC1-6alkyl; or unsubstituted C3-6cycloalkylC1-6alkyl; A is C—R5 or N; B is C—R6 or N; D is C—R7 or N; with the proviso that at least one of A, B, and D, is N; R5 is hydrogen or C1-6alkyl; R6 is hydrogen or C1-6alkyl; R7 is hydrogen, C1-6alkyl, C1-6alkoxy, or hydroxy; R8 is hydrogen or C1-6alkyl, with the proviso that one of R4 and R8 is hydrogen; R9 is hydrogen or hydroxy; R10 is hydrogen or C1-6alkyl; and salts thereof are PAD4 inhibitors and may be useful in the treatment of various disorders, for example rheumatoid arthritis, vasculitis, systemic lupus erythematosus, ulcerative colitis, cancer, cystic fibrosis, asthma, cutaneous lupus erythematosis, and psoriasis.