Abstract:
A sliding contact assembly for a DC electrical outlet receives plug contacts of an electrical plug. The assembly includes sliding contact structure having a base and a plurality of electrical sliding contacts fixed to the base. A housing includes a first end wall having an internal top surface and second end wall opposing the first end wall. The second end wall has an internal bottom surface. The housing has a side wall structure defining an internal chamber between the top surface and the bottom surface. The sliding contact structure is disposed in the housing to be movable linearly within the chamber. A spring is disposed between the top surface of the housing and a surface of the base so that when the plug contacts are completely disconnected from the associated sliding contacts, the spring rapidly forces the sliding contacts away from the plug contacts, reducing arcing energy there-between.
Abstract:
A series injection device includes a power splitter coupled to two or more lines of an AC power system. The power splitter includes a coupling transformer for each phase of a single phase or polyphase AC circuit that includes the two or more lines. Each of the coupling transformers couples one of the phases of the two or more lines. The power splitter is configured to inject a first voltage of a first polarity into one or more of the two or more lines and inject a second voltage of a second polarity opposite the first polarity into at least one of the two or more lines via the same coupling transformers used to inject the first voltage. The first and the second voltages are controllable, and may or may not be independently variable.
Abstract:
The present disclosure provides a robotic system. The robotic system includes a robot, an operator input device, and a control system communicatively coupled to the robot and to the input device. The control system stores executable program instructions, including a predefined automatic motion sequence of the robot. The input device is operative to direct the robot via the control system to perform user-guided motions of the robot in response to human manipulation of the input device. The control system is configured to execute program instructions to execute the predefined automatic motion sequence and to overlay the predefined automatic motion sequence with the user-guided motions.
Abstract:
A control system includes a module assembly with a base. The base can be configured for engagement with at least one module having electronic circuitry disposed therein or other electronic device. The base includes at least one latching assembly with a lever operable to move a shuttle coupled to the lever to releasably engage the base with an elongated mounting rail.
Abstract:
The present disclosure relates generally to robotic additive manufacturing (RAM) apparatuses, systems, methods. Additive manufacturing includes a number of processes which are used to make or modify three dimensional parts by controlling the position and outputting of additive material. 3D printing is one example of an additive manufacturing technology in which additive material is deposited by a tool under computer control to produce a part. Conventional 3D printing is limited in that it can control the tool only over three degrees of freedom. Additive manufacturing systems including a robotic arm that can control a tool over six degrees of freedom (e.g., X, Y and Z axis translation and pitch, yaw and roll rotation) have been proposed. Heretofore, additive manufacturing techniques have suffered from a number of disadvantages and drawbacks including those respecting variation in the produced part from the intended part design as well as process time and cost to name several examples. These disadvantages and drawbacks may be particularly acute for parts for which precision and accuracy are at a premium but may impact production of other parts as well. There remains a significant need for the unique apparatuses, systems, methods disclosed herein.
Abstract:
A corrosion resistant conduit system that protects against corrosion and against electrical shortage. The corrosion resistant conduit system includes: a multilayer conduit having a metal layer disposed between two polymeric layers, a conduit fitting having an electrically conductive component and a body having one or more layers of polymeric material, and means for conductively coupling the metallic layer of the multilayer tube to the electrically conductive component of the fitting, which provides a continuous electrical path throughout the corrosion resistant conduit system.
Abstract:
A robotic system includes a robot having an associated workspace; a vision sensor constructed to obtain a 3D image of a robot scene including a workpiece located in the workspace; and a control system communicatively coupled to the vision sensor and to the robot. The control system is configured to execute program instructions to filter the image by segmenting the image into a first image portion containing substantially only a region of interest within the robot scene, and a second image portion containing the balance of the robot scene outside the region of interest; and by storing image data associated with the first image portion. The control system is operative to control movement of the robot to perform work, on the workpiece based on the image data associated with the first image portion.
Abstract:
A method for controlling a modular converter, said modular converter comprising a plurality of M converter cells, each converter cell comprising an AC-to-DC converter, a primary side of which represents a primary side of said converter cell, a DC-to-DC converter, a secondary side of which represents a secondary side of said converter cell; with a secondary side of said AC-to-DC converter and a primary side of said DC-to-DC converter connected in parallel with a first DC-link capacitor, a secondary side of said DC-to-DC converter connected to a second DC-link capacitor; wherein each DC-to-DC converter may be operated in at least a first active operation state, in which electric power may flow into the primary side and out of the secondary side of said DC-to-DC converter; and a second active operation state, in which electric power may flow into the secondary side and out of the primary side of said DC-to-DC converter; the primary sides of the converter cells are connected in series, with a first converter cell connected to a line, preferably a medium voltage line, providing an AC line voltage U(t) having a peak value Û , and an M -th converter cell connected to a ground; comprises the steps of: repeatedly determining a switch-over indicator, switching at least one DC-to-DC converter between first and second operation state if the switch-over indicator fulfils a switch-over condition. In accordance with the invention the switch-over indicator is determined based on one or more of the following quantities, said quantity or quantities preferably obtained by measurement: one or more voltages at one or more first DC-link capacitors, one or more voltages at one or more second DC-link capacitors, a DC-to-DC converter current (/ conv ) at a point between the first DC-link capacitor and the second DC-link capacitor of at least one converter cell, and/or a load current (/ load ) at a secondary side of the modular converter.
Abstract:
An electric device (10) having an electric inductance comprises at least one winding (12), a magnetic core (14) with a leg (18b) surrounded by the winding (12) and a thermosyphon cooler (16) for cooling the winding (12). The cooler (16) has an evaporator (22) with at least one evaporator conduit (28) for evaporating a cooling fluid and a condenser (24) with at least one condenser conduit (30) for condensing the cooling fluid. The evaporator (22) is in thermal contact with a side surface (27) of the winding (12). Furthermore, the evaporator conduit (28) and/or the condenser conduit (30) are provided by a multi-channel tube (52), which multi-channel tube (52) is separated by inner walls (54) in at least two channels (50).
Abstract:
A switchgear includes a circuit breaker housing defining a circuit breaker compartment. A bushing (22') has first and second portions and extends through an opening (42) in a rear wall (31) of the housing so that the first portion is disposed in the circuit breaker compartment and the second portion is disposed beyond the exterior of the rear wall and external of the circuit breaker compartment. The bushing has a hollow primary contact (50). A current transformer (26') is mounted on the second portion of the bushing. A fastener structure (40) has a portion that extends through the hollow primary contact. The fastener structure couples the primary contact to a busbar in a removable manner. When the fastener structure is decoupled from the primary contact, the bushing and the at least one current transform can be accessed from the front of the housing and moved through the opening in the rear wall, for maintenance.