Patent application number | Description | Published |
20100036023 | Graphite Nanocomposites - Elastomeric compositions comprising graphite nanoparticles (preferably graphene nanoparticles) and methods for making same. Such compositions are useful for tire innertubes and tire innerliners. | 02-11-2010 |
20110073164 | Isobutylene-Based Elastomers in Voltaic Cell Applications - Disclosed in one aspect is a voltaic cell assembly comprising one or more voltaic cells, a photovoltaic cell in one embodiment; an elastomeric film and a transparent film, the voltaic cell sandwiched there between. The elastomeric film can be formed from a natural rubber or an isobutylene-based elastomer. More particularly, the elastomeric film may comprise a DVA of a polyamide and a functionalized poly(isobutylene-co-p-methylstyrene). The assembly described is useful for a number of end use articles including roofing shingles, automotive components, building components, and, in general, solar arrays. | 03-31-2011 |
20120015182 | Adhesive Extrusion For Dynamically Vulcanized Thermoplastic Elastomer Laminates - A coextrusion process for coextruding a thermoplastic elastomer with two outer layers of adhesive to form a film, and a laminate comprising a plurality of layers including an adhesive layer, a sublayer and a barrier layer. The barrier layer comprises a dynamically vulcanized thermoplastic elastomer composition present in one or more plies of the barrier layer. The sublayer comprises a first ply of a first adhesive composition joining the barrier layer and a second ply, and the adhesive layer comprises the second ply, which is vulcanizable with diene-based rubber. The sublayer of the adhesive can be laid down in contact with the relatively hot thermoplastic elastomer to moderate the temperature of the outer layer of the adhesive, whereby the outer layer of the adhesive at least is protected from scorching and can be co-vulcanized with rubber in a tire building process. | 01-19-2012 |
20130266786 | Polymers, Polymer Blends, and Articles Made Therefrom - Polymer compositions including an ethylene-based polymer having a melt index of from about 0.1 g/10 min to about 5.0 g/10 min; a melt index ratio of from about 15 to about 30; a weight average molecular weight (Mw) of from about 20,000 to about 200,000; a molecular weight distribution (Mw/Mn) of from about 2.0 to about 4.5; and a density of from 0.900 to 0.920 g/cm | 10-10-2013 |
Patent application number | Description | Published |
20090115561 | PLANAR CORE STRUCTURE - Generally, a low-profile planar core structure for use in magnetic components and related processes are presented herein. More specifically, the planar core structure provides a relatively large winding area that reduces heat dissipation, reduces leakage inductance, and allows for a low-profile design. The planar core structure has a center core that is elongated along a horizontal axis. Furthermore, conductors may enter and exit the planar core structure without increasing its height. | 05-07-2009 |
20090295524 | POWER CONVERTER MAGNETIC DEVICES - Magnetic structures for use in components utilized in switched mode power supplies can be combined to provide space and cost savings. Portions of magnetic cores can be utilized to form more than one component and/or separate magnetic cores can be combined into a single core. Further, a layer of material that has a higher flux density saturation point than the core and that is lower in permeability than the core (but higher than that of air) can be placed adjacent to the air gap in a core to decrease the magnetic flux passing through the vicinity surrounding the core so as to reduce EMI. A differential-mode choke and a separate common-mode choke can be combined onto a single core. An extra leg for a PFC choke core can be added to an isolation transformer core to form a single combined core. A pair of E-E core structures can be combined into a single core structure such as could be used to combine a pair of separate PFC chokes into an integrated pair of PFC chokes. | 12-03-2009 |
20090295527 | HIGH POWER MANUFACTURING FRIENDLY TRANSFORMER - Transformers having bobbins that are constructed in such a way that pre-formed secondary windings (e.g., resembling springs) may be slipped onto the bobbins after a primary winding has been wound onto the bobbin. Additionally, the secondary windings may also serve as a self-leading device. That is, they may not require terminations on pins of the bobbin, which may reduce cost and complexity. The secondary windings may have circular or non-circular (e.g., flat) cross-sections. The transformer winding techniques provided herein may reduce the number of components, and may promote smaller input filters and/or less filtering stages at a fraction of the cost of conventional transformers. | 12-03-2009 |
20090295528 | AC/DC PLANAR TRANSFORMER - An inductive element including a magnetic core with a section received in a central opening defined in each of the layers in a multilayer circuit board. A primary winding, an auxiliary winding, and a secondary winding are each realized in conductive coils located on a plurality of layers in the circuit board. The secondary winding is separated from the other windings by a relatively-thick dielectric layer. Other dielectric layers separate each of the layers with the coils. EMI shields are provided on other layers. The coils are located in a central region of each layer so as to provide an adequate safety margin from the side edges of the inductive element. | 12-03-2009 |
20090295529 | CROSS-CORE TRANSFORMER - Core structures that may be used in transformers to improve the number of turns-ratios available. The core structures may include at least three outer legs and a center leg. In operation windings of the transformer may be wrapped around the center leg (e.g., using a bobbin) a fractional number of times, such that the turns-ratio of the transformer may be more finely selected without increasing the number of turns required. Additionally, the outer legs may have different cross-sectional areas, such that even more fractional turns-ratios are available. | 12-03-2009 |
20090295531 | OPTIMIZED LITZ WIRE - A conductive cable for reducing the power losses in components, such as inductors and transformers. The conductive cable includes multiple strands that each include an inner conductor and an outer insulating layer. The conductive cable includes strands of multiple cross-sectional areas (multiple gauges), such that the power losses associated with the skin effect may be reduced. The cross-sectional areas of the strands of the conductive cable may be selected dependent upon the frequency content of the current that they are intended to carry. In the case of a PFC boost converter, the various cross-sectional areas of the strands may be selected to carry the harmonics of and AC power source, as well as higher frequency current caused by a switch associated with the PFC boost converter. | 12-03-2009 |
20100321958 | Power Converter Employing a Variable Switching Frequency and a Magnetic Device with a Non-Uniform Gap - A power converter including a power switch, a controller for controlling a switching frequency thereof, and a magnetic device with a non-uniform gap. In one embodiment, the power converter includes a power switch and a magnetic device coupled to the power switch and having a non-uniform gap. The power converter also includes a controller having a detector configured to sense a condition representing an output power of the power converter. A control circuit of the controller is configured to control a switching frequency of the power switch as a function of the condition and control a duty cycle of the power switch to regulate an output characteristic of the power converter. | 12-23-2010 |
20110232080 | MAGNETIC COMPONENT ASSEMBLY - Generally, methods and processes for assembling magnetic components are presented herein. More specifically, conductors are wound around a substantially hollow bobbin. Portions of the conductors may be temporarily positioned outside the bobbin through slots in the flanges of the bobbin during the assembly process. Insulating layers may be wrapped around the conductors. The center legs of a pair of magnetic core halves may be inserted into the bobbin. The base of the magnetic core halves may have a passage to allow a conductor to pass therethrough at a height less than the height of the base. | 09-29-2011 |
20120081200 | Inductive Device - We describe an inductive device for use in current shaping applications. The inductive device includes a core body comprising a first gap and a second gap, and at least one transition region between the first and second gaps. The shape of each gap in the inductive device can control a slope between two inductance values as a function of load current. The inductive device is capable of providing low total harmonic distortion (THD) AC output waveforms to achieve high efficiency. | 04-05-2012 |
20120081204 | TRANSFORMER CONSTRUCTION - The invention relates to a transformer construction comprising a plurality of transformer cores configured to share magnetic flux paths and, as a result, at least one of the cores comprises a post and an associated sidewall having an effective cross-sectional area which is less than that of the post. Such a construction may be employed in a power conditioning unit, for example, for a photovoltaic module, which is configured to operate the cores out of phase from each other. Also described is a transformer winding comprising a longitudinal spine having a first turn emanating from a first portion of the spine in a first transverse direction and a second turn emanating from a second portion of the spine in a second transverse direction, wherein the second transverse direction is opposite to the first transverse direction. | 04-05-2012 |
20130229834 | Transformer Construction - The invention relates to a transformer construction comprising a plurality of transformer cores configured to share magnetic flux paths and, as a result, at least one of the cores comprises a post and an associated sidewall having an effective cross-sectional area which is less than that of the post. Such a construction may be employed in a power conditioning unit, for example, for a photovoltaic module, which is configured to operate the cores out of phase from each other. Also described is a transformer winding comprising a longitudinal spine having a first turn emanating from a first portion of the spine in a first transverse direction and a second turn emanating from a second portion of the spine in a second transverse direction, wherein the second transverse direction is opposite to the first transverse direction. | 09-05-2013 |
20140266530 | INTEGRATED MAGNETIC ASSEMBLIES AND METHODS OF ASSEMBLING SAME - An integrated magnetic assembly includes a magnetic core, an input winding inductively coupled to the magnetic core, a first output winding inductively coupled to the magnetic core, and a second output winding inductively coupled to the magnetic core. The magnetic core includes first and second non-winding legs, and first and second winding legs. The first and second non-winding legs are spaced apart from one another, and the magnetic core defines an opening between the first and second non-winding legs. The input winding extends through the opening between the first and second non-winding legs, and is wound around each of the first and second winding legs. The first output winding is wound around the first winding leg. The second output winding is wound around the second winding leg. | 09-18-2014 |
20140266552 | INTEGRATED INDUCTOR ASSEMBLIES AND METHODS OF ASSEMBLING SAME - An integrated inductor assembly is provided. The integrated inductor assembly includes a magnetic core, a first inductor, and a second inductor. The magnetic core has a first side, an opposing second side, and an opening defined within the magnetic core. The opening extends into the magnetic core from at least one of the first side and the second side. The first inductor includes a first conductive winding inductively coupled to the magnetic core. The first conductive winding includes a first shorting segment positioned within the opening. The second inductor includes a second conductive winding inductively coupled to the magnetic core. The second conductive winding includes a second shorting segment positioned within the opening. The first and second inductors are configurable to operate independently of one another. | 09-18-2014 |
20150243431 | Transformer Construction - The invention relates to a transformer construction comprising a plurality of transformer cores configured to share magnetic flux paths and, as a result, at least one of the cores comprises a post and an associated sidewall having an effective cross-sectional area which is less than that of the post. Such a construction may be employed in a power conditioning unit, for example, for a photovoltaic module, which is configured to operate the cores out of phase from each other. Also described is a transformer winding comprising a longitudinal spine having a first turn emanating from a first portion of the spine in a first transverse direction and a second turn emanating from a second portion of the spine in a second transverse direction, wherein the second transverse direction is opposite to the first transverse direction. | 08-27-2015 |
Patent application number | Description | Published |
20080300817 | SENSOR SUBSET SELECTION FOR REDUCED BANDWIDTH AND COMPUTATION REQUIREMENTS - A system for identifying a subset of sensors to sample to reduce the frequency of sensor access. The system determines rise times and records values for the sensors in the system. A time criticality of the sensors is determined based on the rise times. The system processes the sensors by first creating sensor subsets based on one or more constraints on the sensors. The system monitors the values of the sensors in a sensor subset and flags a sensor when it makes a determination that, prior to a next scheduled sampling of the sensor subset, the value of a sensor in the monitored sensor subset will exceed a threshold constraint. The system moves those flagged sensors to a second sensor subset which complies with the sensor's constraints. | 12-04-2008 |
20090099817 | Sensor Subset Selection for Reduced Bandwidth and Computation Requirements - A system for identifying a subset of sensors to sample to reduce the frequency of sensor access. The system determines rise times and records values for the sensors in the system. A time criticality of the sensors is determined based on the rise times. The system processes the sensors by first creating sensor subsets based on one or more constraints on the sensors. The system monitors the values of the sensors in a sensor subset and flags a sensor when it makes a determination that, prior to a next scheduled sampling of the sensor subset, the value of a sensor in the monitored sensor subset will exceed a threshold constraint. The system moves those flagged sensors to a second sensor subset which complies with the sensor's constraints. | 04-16-2009 |
20130116963 | Minimizing Aggregate Cooling and Leakage Power with Fast Convergence - A mechanism is provided for minimizing system power in the data processing system with fast convergence. A current aggregate system power value is determined using a current thermal threshold value. For each potential thermal threshold value in a set of potential thermal threshold values, a determination is made as to whether there is a potential thermal threshold value that results in a potential aggregate system power value that is lower than the current aggregate system power value. Responsive to identifying an optimal potential thermal threshold value from the set of potential thermal threshold values that results in minimum aggregate system power value that is lower than the current aggregate system power value, the optimal potential thermal threshold value is set as a new thermal threshold value. | 05-09-2013 |
20130117590 | Minimizing Aggregate Cooling and Leakage Power with Fast Convergence - A mechanism is provided for minimizing system power in the data processing system with fast convergence. A current aggregate system power value is determined using a current thermal threshold value. For each potential thermal threshold value in a set of potential thermal threshold values, a determination is made as to whether there is a potential thermal threshold value that results in a potential aggregate system power value that is lower than the current aggregate system power value. Responsive to identifying an optimal potential thermal threshold value from the set of potential thermal threshold values that results in minimum aggregate system power value that is lower than the current aggregate system power value, the optimal potential thermal threshold value is set as a new thermal threshold value. | 05-09-2013 |
20130166095 | Proactive Cooling Of Chips Using Workload Information and Controls - A method to reduce large temperature over/undershoot in a computer system. Using workload data, the method proactively modifies controls of mechanical cooling system to anticipate power and take appropriate actions to maintain temperature. Workload control modifies workload and scheduling to reduce power transients and subsequent temperature deviations. In addition, workload control allows more even distribution of temp across chips, allowing for even wear and reduction of small/ripple/noise temp oscillations. A system and program product for carrying out the method are also provided. | 06-27-2013 |
20130325378 | Predicting Energy Savings - A mechanism is provided for estimating energy/power consumption of a fixed-frequency operating mode while system is running in dynamic power management mode. For each time interval in a plurality of time intervals within a time period: a first processor identifies a modeled total nominal power value for at least one second processor during a current time interval, stores the modeled total nominal power value for the current time interval in a storage, identifies a dynamic power management mode power value for the at least one second processor in the data processing system during the current interval, and stores the dynamic power management mode power value for the current time interval in the storage. Responsive to the time period expiring, a comparison is produced of a plurality of modeled total nominal power values and a plurality of dynamic power management mode power values over the time period. | 12-05-2013 |
20140149750 | COMPUTING SYSTEM VOLTAGE CONTROL - An apparatus including a voltage safety verification unit (VSVU) configured to receive an indication of a first performance state, the first performance state being associated with a first voltage. The first performance state applies to at least one computing system component and the indication is received by a computing system component distinct from the requesting computing system component. The VSVU is configured to receive an indication of a second performance state. The second performance state is associated with a second voltage that is not equal to the first voltage. The VSVU is configured to determine whether the second performance state is within a range defined by a minimum and maximum performance state. Responsive to a determination that the second performance state is within the, the VSVU is configured to set the voltage of the at least one computing system component equal to the voltage associated with the second performance state. | 05-29-2014 |
20140149755 | DECOUPLED POWER AND PERFORMANCE ALLOCATION IN A MULTIPROCESSING SYSTEM - A performance supervisor computer program product is configured to set a maximum and a minimum performance operating limit for a plurality of processing units in accordance with a set of one or more rules enforced by the performance supervisor. Each of the plurality of processing units has logic configured to ensure a request for an operational setting complies with the maximum and minimum operating limits. Each of the plurality of processing units is configured to output a request for a limit compliant operational setting to a performance controller. The performance controller is configured to actuate the operational request. | 05-29-2014 |
20140149760 | DISTRIBUTED POWER BUDGETING - A distributed power management computer program product is configured to collect power consumption data that indicates power consumption by at least a plurality of the components of a node. The program code can be configured to provide, to each of a plurality of controllers associated with a respective one of the plurality of components, the power consumption data. The program code can be configured to determine a node power consumption. The program code can be configured to determine a power differential as a difference between the node power consumption and an upper power consumption threshold of the node. The program code can be configured to determine a proportion of the node power consumption consumed by a first component. The program code can be configured to compute a local power budget for the first component. | 05-29-2014 |
20140149761 | DISTRIBUTED POWER BUDGETING - Embodiments include collecting, from each of a plurality of controllers of a node having a plurality of components, component power consumption. Each of the plurality of controllers is associated with one or more of the components. The component power consumptions are provided to the controllers. A node power consumption for the node is determined based, at least in part, on the component power consumption. The power cap is determined for the plurality of components. A power differential power is determined as a difference between the node power consumption and the power cap for the plurality of components. A proportion of the node power consumption consumed by the component is determined based on the component power consumption of the component. A local power budget is computed for the component based, at least in part, on the power differential and the proportion of the node power consumption consumed by the component. | 05-29-2014 |
20140149762 | DECOUPLED POWER AND PERFORMANCE ALLOCATION IN A MULTIPROCESSING SYSTEM - Embodiments of the inventive subject matter include setting minimum and maximum performance operating limits for each of a plurality of controllers. The operating limits are set in accordance with performance rules imposed on the system. In response to a request to change operation of a processing unit to a requested operational setting, it is determined whether the requested operational setting complies with the minimum and maximum performance operating limits. The minimum performance operating limit is sent to a performance controller if the requested operational setting does not comply with the minimum performance operating limit. The maximum performance operating limit is sent to a performance controller if the requested operational setting does not comply with the maximum performance operating limit. The requested operational setting is sent to a performance controller if the requested operational setting complies with the minimum and maximum performance operating limits. | 05-29-2014 |
20140149763 | COMPUTING SYSTEM VOLTAGE CONTROL - Computing system voltage control methods include receiving an indication of a first performance state. The first performance state is associated with a first voltage and applies to at least one computing system component. The indication of the first performance state is received by a first computing system component from a second computing system component. An indication of a second performance state is received, wherein the second performance state is associated with a second voltage that is not equal to the first voltage. It is determined whether the second performance state is within a range defined by a minimum performance state and a maximum performance state. Responsive to determining that the second performance state is within the range defined by the minimum performance state and the maximum performance state, the voltage of the at least one computing system component is set equal to the voltage associated with the second performance state. | 05-29-2014 |
20150241943 | DISTRIBUTED POWER MANAGEMENT WITH PERFORMANCE AND POWER BOUNDARIES - It is determined that a current node power consumption for a node is greater than a node power cap that defines a limit of power consumption for the node. Responsive to the current node power consumption being greater than the node power cap and until the current node power consumption is less than the node power cap, power reduction operations are performed. The power reduction operations comprise determining a power management zone of a plurality of power management zones having a lowest priority among the power management zones and having a power cap greater than a minimum power cap for the power management zone. The power reduction operations further comprise setting the power cap for the power management zone to a value less than a prior value assigned as the power cap for the power management zone. | 08-27-2015 |
20150241944 | DISTRIBUTED POWER MANAGEMENT WITH PERFORMANCE AND POWER BOUNDARIES - A zone power cap for a power management zone that defines a limit of power consumption for the power management zone is determined. The power management zone comprises a plurality of components, wherein the power management zone is associated with a controller. A set of one or more characteristics of a workload associated with the power management zone is determined. A component power cap for one or more of the plurality of components is set based, at least in part, on the set of one or more characteristics of the workload and the zone power cap. | 08-27-2015 |
20150241946 | DISTRIBUTED POWER MANAGEMENT WITH PERFORMANCE AND POWER BOUNDARIES - It is determined that a current node power consumption for a node is greater than a node power cap that defines a limit of power consumption for the node. Responsive to the current node power consumption being greater than the node power cap and until the current node power consumption is less than the node power cap, power reduction operations are performed. The power reduction operations comprise determining a power management zone of a plurality of power management zones having a lowest priority among the power management zones and having a power cap greater than a minimum power cap for the power management zone. The power reduction operations further comprise setting the power cap for the power management zone to a value less than a prior value assigned as the power cap for the power management zone. | 08-27-2015 |
20150241947 | DISTRIBUTED POWER MANAGEMENT WITH PERFORMANCE AND POWER BOUNDARIES - A zone power cap for a power management zone that defines a limit of power consumption for the power management zone is determined. The power management zone comprises a plurality of components, wherein the power management zone is associated with a controller. A set of one or more characteristics of a workload associated with the power management zone is determined. A component power cap for one or more of the plurality of components is set based, at least in part, on the set of one or more characteristics of the workload and the zone power cap. | 08-27-2015 |