Abstract: A method and system are provided for training a robot to recognize objects in the workspace of the robot. Objects in the workspace are identified by the user, and the robot determines candidate objects. Feedback may be used in order for the user to confirm whether the candidate object determined by the robot system matches the object intended by the user. Gripping information for the object may also be identified by the user to train the robot how to grip the object.

Abstract: Systems, methods, techniques and apparatuses of fault protection. One exemplary embodiment is a protection system including a solid-state switching device, a galvanic isolation switching device, and a controller. The solid-state switching device is coupled between a switch arrangement of a power converter and a direct current (DC) link capacitor of the power converter. The galvanic isolation switching device is coupled between the DC link capacitor and a DC network. The controller is structured to determine a fault is occurring within the DC network, open the solid-state switching device in response to determining the fault is occurring, receive a measurement corresponding to an electrical characteristic of a fault current flowing through the galvanic isolation switching device while the solid-state switching device is open, and determine a location of the fault based on the received measurement.

Abstract: In a power semiconductor device of the application a total number n of floating field rings (10_1 to 10_n) formed in a termination area is at least 10. For any integer i in a range from i=2 to i=n, a ring-to-ring separation di,i?i between an i-th floating field ring and a directly adjacent (i?1)-th floating field ring, when counting the floating field rings (10_1 to 10_n) along a straight line starting from a main pn-junction and extending in a lateral direction away from the main pn-junction, is given by the following formula: di,i?1=d1,0+?j=1j=i?1 ?j for i=2 to n, wherein d1,0 is a distance between the innermost floating field ring (10_1) closest to the main pn-junction and the main pn-junction, and wherein: ?zone1?0.05·?zone2<?j<?zone1+0.05·?zone2 for j=1 to I?2, 2·?zone2<|?j|<10·?zone2. for j=I?1, 0.95·?zone2<?j<1.05·?zone2 for j=I to n?1, ?zone2>0.1 ?m, and ??zone2/2<?zone1<?zone2/2, wherein I is an integer, for which 3?l?n/2.

Abstract: A method for heating a wind turbine facility includes: charging a DC link of an electrical converter connected with a wind turbine of the wind turbine facility; heating air inside the wind turbine facility with heat generated by a voltage limiting unit interconnected with the DC link, which includes a resistor adapted for dissipating electrical energy into heat for reducing a voltage in the DC link, when the voltage is above a threshold voltage; wherein the voltage limiting unit is controlled, such that the voltage limiting unit generates heat according to settings defined in a controller of the voltage limiting unit. The heating settings are changed based upon commands from a user interface. Furthermore, the DC link is charged by a grid side converter of the wind turbine facility with power from an electrical grid.

Abstract: A cable comprising that includes an elongated conductor operable to transmit electrical energy at medium or high AC voltages. The conductor has a core including a first plurality of wires of a first conductive material, and an outer layer surrounding the core including a second plurality of wires of a second conductive material. The first conductive material has a deeper characteristic skin depth than the second conductive material. The total cross sectional area of the first and second plurality of wires is at least about 2500 kcmil.