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Electric Power Research Institute Inc patents


Recent patent applications related to Electric Power Research Institute Inc. Electric Power Research Institute Inc is listed as an Agent/Assignee. Note: Electric Power Research Institute Inc may have other listings under different names/spellings. We're not affiliated with Electric Power Research Institute Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "E" | Electric Power Research Institute Inc-related inventors


Modeling method and system for diode clamped cascaded multi-level converter

A modeling method and system for a diode clamped cascaded multi-level converter. All corresponding diodes of each bridge arm are equivalent to an auxiliary diode; all corresponding capacitors of each bridge arm are equivalent to a controlled voltage source; and power modules of each bridge arm are connected in series to be equivalent to an equivalent module, the equivalent module comprising a loss resistor and a composite equivalent model connected to the loss resistor. ... Electric Power Research Institute Inc

Apparatus and method for identifying ballistic impact to power transmission assets

A method of identifying a ballistic impact on a power transmission asset is disclosed. The method includes the steps of deploying a sensor assembly at the power transmission asset; using the sensor assembly to receive and process data at the power transmission asset; using an algorithm to compare the processed data to known data and determine if a ballistic impact has occurred on the power transmission asset; and triggering an alarm if a ballistic impact has occurred and dispatching personnel to the power transmission asset.. ... Electric Power Research Institute Inc

Sensor to monitor health of metal oxide arresters

A sensor to monitor health of surge arresters such as metal oxide arresters is disclosed. The sensor including a housing; a sensor assembly contained in the housing, and a voltage measurement strap extending around a periphery of the housing. ... Electric Power Research Institute Inc

Reheating of a working fluid within a turbine system for power generation

An in-situ incremental reheating system configured to increase steam temperature and thermodynamic efficiencies of a steam turbine is disclosed. The system includes a pump; a radiant heater; piping inter-connecting the pump, radiant heater and steam turbine to create a flow circuit; and a heat transfer material configured to flow through the flow circuit and transfer heat directly to steam used in the steam turbine. ... Electric Power Research Institute Inc

Method to eliminate dissimilar metal welds

A method of eliminating dissimilar metal welds has been disclosed. The method includes the steps of providing a first part having a first alloy composition; providing a second part having a second alloy composition different from the first part; connecting a containment structure to the first part; pouring a powder into the containment structure such that the powder is in contact with the first part; positioning a portion of the second part in the containment structure such that the second part compresses the powder between the first and second parts; and performing hot isostatic pressing (hip) to consolidate the powder and join the first and second parts together.. ... Electric Power Research Institute Inc

Apparatus and method for evaulating non-ceramic insulators with conformal probe

An apparatus for evaluating an electrical insulator includes: a frame having a base and a pair of spaced-apart resilient arms each having a distal end; and a flexible probe disposed between the arms, the flexible probe being generally u-shaped and having a pair of distal ends, each distal end of the probe being connected to a respective distal end of one of the arms.. . ... Electric Power Research Institute Inc

Virtual wi-fi network and secure tunnel provisioning for reliable, persistent connection of energy devices at the customer's premises

A method for providing a virtual wi-fi network with secure tunnel provisioning is disclosed. The method provides a reliable, persistent connection between wireless communications enabled devices located at a user's premises and a service provider, and includes the steps of using a software code running on a computing device to pass instructions including a remote server address to an application programming interface (api) running on a wireless router connected to the computing device through a local area network (lan); using the wireless router to establish a secure communication session with the remote server through a wide area network (wan); receiving at the wireless router through the wan parameters required to set up a wireless virtual local area network (vlan); and using the router, establishing a wireless vlan at the user's premises and connecting the wireless vlan to the remote server through the wan using a secure tunnel connection.. ... Electric Power Research Institute Inc

Energy harvesting device

A device for harvesting energy from a power line carrying ac current including: a transformer having a core with separate first and second sections, the core being formed of ceramic material or layered nickel alloy tape; a first secondary winding wound around the first section of the core; a second secondary winding wound around the second section of the core; a first dc core-flux control winding wound around the first section of the core; and a second dc core-flux control winding wound around the second section of the core; wherein the core is configured to be in operative communication with a magnetic field radiated from the power line, such that an ac voltage is generated in the first and second secondary windings, and the maximum ac voltage produced by the first and second secondary windings is limited by the first and second dc core-flux control windings.. . ... Electric Power Research Institute Inc

Methods for creating a zinc-metal oxide layer in metal components for corrosion resistance

The present invention provides a method for manufacturing a finished metal object or product having a corrosion resistant layer integral to or within a top portion of at least one of its surfaces that would be exposed to a corrosive environment. In one embodiment, the method for manufacturing is directed to a finished metal tubing product having a corrosion resistant layer within its inside surface that is exposed to a fluid and wherein the corrosion resistant layer is a zinc-metal oxide layer, such as a zinc-chromium oxide layer, or a zinc-mixed metal oxide layer. ... Electric Power Research Institute Inc

Method for repairing electrically erosive pot hole on surface of liquid silicone rubber shed

Disclosed is a method for repairing an electrically erosive pot hole on a surface of a liquid silicone rubber (lsr) shed, including the following steps: using rtv anti-pollution flashover paint as a first coating, and coating the rtv anti-pollution flashover paint on a surface of an electrically erosive pot hole to make the surface of the pot hole smooth; using a mono-component rtv repair adhesive as a second coating to fill the electrically erosive pot hole, so as to fill and level up the electrically erosive pot hole, and the mono-component rtv repair adhesive is closely bonded to the first coating; and using the rtv anti-pollution flashover paint as a third coating, and coating the rtv anti-pollution flashover paint on the second coating. The method enables the appearance and performance of an lsr shed on which electrical erosion occurs to be effectively recovered.. ... Electric Power Research Institute Inc

Apparatus and method for identifying physical security risks to power transmission structures

An apparatus and method for identifying physical security risks to power transmission structures and other associated assets of a power transmission system is disclosed. The apparatus includes a sensor having a sensor assembly; and a floating electrode electrically connected to the sensor and positioned adjacent to the asset being monitored. ... Electric Power Research Institute Inc

Stepped design weld joint preparation

A weld with a stepped configuration is provided. The stepped configuration may be machined from a substrate to form a weld preparation which may accommodate a stepped weld. ... Electric Power Research Institute Inc








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