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US20120173173 RAM AIR TURBINE WITH FLUX REGULATED PERMANENT MAGNET GENERATOR AND TESTING METHOD  
A deployable ram air turbine assembly includes a rotatable turbine, a drivetrain mechanically connected to the rotatable turbine, and a flux regulated permanent magnet generator operably connected...
US20140097958 INTEGRATED CIRCUIT TO OPERATE IN AN AREA OF IONIZING RADIATION, AND HAVING AN OUTPUT FOR A RADIATION DOSE-DEPENDENT WAY DAMAGE INFORMATION, AND ALARM INDICATORS AND CORRESPONDING METHOD  
An integrated circuit, in particular a microcontroller, for operation in an area with ionizing radiation, has at least one part of a temperature control circuit. The temperature control circuit...
US20150039252 SYSTEM AND METHOD FOR DETECTING GENERATOR INCIPIENT FAILURES  
A method, system and computer software for detecting an incipient failure of a generator in a power system including the steps of ascertaining one or more generator reference parameter of the...
US20150012231 INTERFERENCE DETECTOR FOR PATIENT MONITOR  
A system is disclosed for detecting and calculating the level of ambient and/or environmental noise, such as electromagnetic interference generated by electric power lines, ambient lights, light...
US20130268216 INSULATION MONITORING SYSTEM FOR SECURED ELECTRIC POWER SYSTEM  
The detection of an insulation fault on a network furnished with tappings by a first monitor can be followed by the location and identification of the fault by way of a locator to be placed on the...
US20110257910 Method for Calibrating a Motor Control Circuit to Improve Temperature Measurement in an Electrical Motor  
A method enables adjustment of a current sense voltage for accurate measurement of an operating temperature for an electrical motor. The method includes identifying a DC input voltage to a motor...
US20140046534 METHOD AND SYSTEM FOR ISOLATING VOLTAGE SENSOR AND CONTACTOR FAULTS IN AN ELECTRICAL SYSTEM  
A method for isolating voltage sensor errors from contactor errors in an electrical system includes measuring a voltage between ground and a voltage bus rail when a contactor is open, and...
US20140257722 PREDICTING MOTOR FAILURE BASED ON RELATIONSHIP OF MOTOR PAIR CHARACTERISTICS  
A system and method of predicting motor failure based on relationships of motor pair characteristics, such as temperatures. A motor pair detection module receives temperatures for each motor of a...
US20140218045 USING PULSED DC TO DETECT CONNECTOR MATING AND UNMATING  
Techniques for detecting mating and un-mating of a first connector with a second connector include providing a pulsed voltage signal at a contact of the second connector and measuring a rate of...
US20140012523 PREVENTIVE DIAGNOSTIC SYSTEM FOR GIS BASED ON IEC 61850  
According to an embodiment of the present disclosure, there is provided a preventive diagnostic system for a GIS that includes a plurality of data acquisition systems (DAS's), a central...
US20110106470 SYSTEM AND METHOD FOR MONITORING POWER FILTERS AND DETECTING POWER FILTER FAILURE IN A WIND TURBINE ELECTRICAL GENERATOR  
Method, system, and computer readable medium for determining a fault in a power filter of a wind turbine generator. The method may include the steps of calculating a reactive power consumed by the...
US20140032138 APPARATUS AND METHOD FOR OUT-OF-STEP PROTECTION USING THE ANALYSIS OF TRAJECTORIES OF ELECTRICAL MEASUREMENTS IN STATE PLANE  
Various embodiments are described herein for a device and method for predicting an out-of-step or transient instability condition in a power system due to a disturbance, such as a fault, where the...
US20110153234 GROUND FAULT DETECTION SYSTEM AND METHOD  
A ground fault detection system is provided. The ground fault detection system includes a magnetic core having first and second primary legs and a secondary leg disposed between the first and...
US20130158903 Method and System for Detecting Transients in Power Grids  
Conditions in a power grid are detected by sampling a voltage in the grid. A normal condition hypothesis is modeled as a sinusoid, and a transient condition hypothesis is modeled as a sum of...
US20130116947 Method and System for Detecting Unbalance in Power Grids  
A method for detecting unbalance in a 3-phase voltage signal is disclosed. The method includes determining an unbalance indicator as a value of a square of an amplitude of a positive sequence of...
US20140236502 Electrical Power System Phase and Ground Protection Using an Adaptive Quadrilateral Characteristic  
A quadrilateral distance module may be used to detect faults in an electrical power system. A resistive coverage of the quadrilateral distance module may be defined by an adaptive resistance...
US20150051851 Method and Device of Remaining Life Prediction for Electromigration Failure  
A method for predicting remaining life of electromigration failure is disclosed. The methods includes: establishing an electromigration life model of a MOS device; acquiring a normal...
US20110264389 Fault Location in Electric Power Delivery Systems  
Accurately calculating location of a phase-to-phase fault even on a branched, non-homogenous, radial electric power distribution system. The calculation includes determining a calculated reactance...
US20150025818 SYNCHRONIZED TESTING OF MULTIPLE WIRELESS DEVICES  
A plurality of wireless devices which communicate with at least one other device are simultaneously tested using a test regime which includes a plurality of tasks. At least one device synchronizes...
US20140136129 SOLAR CELL CHARACTERISTICS DETERMINATION  
An apparatus for determining solar cell characteristics includes a quantum efficiency measurement tool configured to measure an external quantum efficiency of the solar cell and a reflectivity...
US20130338945 Outage Scope Analysis for Electrical Distribution Systems  
Outage scope for an electrical distribution system is estimated by generating downstream outage prediction information indicating whether any service area protected by one of the terminal...
US20100321874 COMPUTER SERVER CHASSIS  
An expandable server housing having one or more server chassis stacked upon each other and one intake plenum and one exhaust plenum disposed on opposite sides of the stacked server chassis is...
US20120239320 RELIABILITY CALCULATION FOR SUBSTATION AUTOMATION SYSTEMS  
A method and device automatically extract, to a maximum extent, reliability-relevant information from a Substation Configuration Description (SCD) file describing an electric power transmission or...
US20140015824 SYSTEM AND METHODS FOR EXTRACTING CORRELATION CURVES FOR AN ORGANIC LIGHT EMITTING DEVICE  
A system and method for determining and applying characterization correlation curves for aging effects on an organic light organic light emitting device (OLED) based pixel is disclosed. A first...
US20110264388 FAULT LOCATION IN ELECTRIC POWER DELIVERY SYSTEMS  
Accurately calculating location of a fault even on a branched, non-homogenous, radial electric power distribution system. The calculation includes determining a calculated reactance or impedance...
US20120197559 METHOD OF PREDICTING PROBABILITY OF ABNORMALITY OCCURRENCE IN OIL-FILLED ELECTRICAL DEVICE  
The present invention is a method of predicting the probability of abnormality occurrence in an oil-filled electrical device, including the steps of: measuring a residual dibenzyl disulfide...
US20110213537 Electronic Shaft Shear Detection Conditioning Circuit  
An electrical control system for distinguishing between an electrical fault and a shaft shear condition in a gas turbine engine, the control system including, in one aspect, a detection circuit...
US20120197558 LOADS MANAGEMENT AND OUTAGES DETECTION FOR SMART GRID  
A system for managing loads and detecting outages over electric power lines that comprises wireless temperature sensors which are attached to bare conductors of the electric power line(s), at line...
US20140074413 DETECTION OF GENERATOR STATOR INTER-CIRCUIT FAULTS  
Aspects of the invention provide a system and method for detecting inter-circuit faults within a generator stator. In one embodiment, a computer system includes: a sampler for sampling phase...
US20150247890 CALCULATING CIRCUIT-LEVEL LEAKAGE USING THREE DIMENSIONAL TECHNOLOGY COMPUTER AIDED DESIGN AND A REDUCED NUMBER OF TRANSISTORS  
A method for calculating leakage of a circuit including a plurality of transistors includes simulating a three-dimensional model of the circuit, wherein the simulating accounts for a subset of the...
US20130041604 METHOD OF PREDICTING TRANSIENT STABILITY OF A SYNCHRONOUS GENERATOR AND ASSOCIATED DEVICE  
A method of predicting transient stability of a synchronous generator and a device for implementing such a method, the device comprising measurement means and calculation means for calculating an...
US20110125430 METHOD AND APPARATUS TO MONITOR STATE OF HEALTH OF ELECTRICAL CONNECTIONS BETWEEN BATTERY AND GENERATOR  
A system and method for monitoring the state of health of the connection between a generator and a battery includes detecting an interruption in power between the generator and the battery,...
US20100013496 Branch circuit black box  
A branch circuit black box for use in a building electrical system having service entrance, current protection switches (circuit breakers or fuses), and a power distribution system includes a...
US20130173076 Power Management System and Method Using Power Limiter  
In one embodiment, electrical appliances in a household are connected to a power supply through power limiters that are further coupled to a controller. The power limiters include power sensors....
US20120197557 String Failure Monitoring  
A method of monitoring a plurality of strings of a photovoltaic system connected to a power inverter includes measuring current values from individual strings to the power inverter; determining a...
US20150204939 MULTIPLE DEFECT DIAGNOSIS METHOD AND MACHINE READABLE MEDIA  
A multiple defect diagnosis method includes: receiving a gate-level netlist of a chip, a plurality of test patterns and a plurality of test failure reports; deriving a plurality of seed nets from...
US20130250458 LEVERAGING INHERENT REDUNDANCY IN A MULTIFUNCTION IED  
Disclosed herein are systems and methods for leveraging the inherent redundancy of electrical measurement inputs available to microprocessor-based intelligent electronic devices (IEDs)....
US20120158325 METHOD AND SYSTEM FOR MONITORING TRANSFORMER HEALTH  
A method, system and computer program product for determining the health of a transformer are provided. The method includes computing an effective turns ratio based on a primary electrical...
US20130311113 PROGNOSTICS AND LIFE ESTIMATION OF ELECTRICAL MACHINES  
The method includes measuring an operating parameter comprising at least one of a phasor current and phasor voltage of an electrical machine. The method further includes determining a diagnostic...
US20140309952 Method for Analyzing Faults in Ungrounded Power Distribution Systems  
A method analyzes a fault of an ungrounded power distribution system. The method determines a type of a fault in a line segment of the ungrounded power distribution system, and modifies a nodal...
US20130144544 SYSTEMS AND METHODS FOR TESTING CIRCUITRY PROGRAMMABILITY  
Systems and methods in which circuitry programmability is tested through observing a change in voltage on a circuit node that is affected by the programmability under test. For example, one or...
US20110035167 INTEGRATED CIRCUIT SYSTEM FOR CONTROLLING STRUCTURAL HEALTH MONITORING PROCESSES AND APPLICATIONS THEREFOR  
A structural health monitoring system using ASICs for signal transmission, reception, and analysis. Incorporating structural health monitoring functionality into one or more ASICs provides a...
US20130024140 WIRE HARNESS CONTINUITY INSPECTION METHOD AND WIRE HARNESS CONTINUITY INSPECTION PROGRAM  
Disclosed are a wire harness continuity inspection method and a wire harness continuity inspection program capable of shortening the time required for a success/failure determination step. A first...
US20120169288 SECONDARY BATTERY SYSTEM  
A secondary battery system includes a secondary battery containing a positive electrode active material configured from lithium manganate having a spinel crystal structure and a negative electrode...
US20120323505 METHOD FOR DE-EMBEDDING IN NETWORK ANALYSIS  
A method is provided for de-embedding fixtures and/or probes from measurements of devices where probes and fixtures are connected between the ports of a network analysis instrument and a...
US20150032393 SWITCHING LOSS MEASUREMENT AND PLOT IN TEST AND MEASUREMENT INSTRUMENT  
The disclosed technology relates to a method and apparatus for graphically displaying a switching cycle of a switching device. A switching voltage and a switching current are acquired for a device...
US20140316725 POWER NOISE HISTOGRAM OF A COMPUTER SYSTEM  
A method is provided for determining a power noise histogram of a computer system. The computer system includes a skitter circuit with multiple skitter bins, each skitter bin of the multiple...
US20150051850 SYSTEMS AND METHODS FOR SWING ANGLE ESTIMATION IN AN ELECTRICAL POWER SYSTEM  
In accordance with one embodiment, a method for detection of power swing for at least a first range of swing angles between an internal voltage (ES) of a source-end generator and an internal...
US20120095707 Method for Identifying Type of Fault on Power Line  
A method for identifying the type of faults occurred on a power line, characterized in that it comprises: calculating a fault point voltage on fault points based on terminal voltage and fault...
US20150094966 QUADRATURE-BASED VOLTAGE EVENTS DETECTION METHOD  
The quadrature-based voltage events detection method accurately characterizes magnitude and duration of short duration voltage variations, such as sag, swell and interruption. The short duration...