721 results about "Power cycle" patented technology

An electrosurgical generator has an output power control system that causes the impedance of tissue to rise and fall in a cyclic pattern until the tissue is desiccated. The advantage of the power control system is that thermal spread and charring are reduced. In addition, the power control system offers improved performance for electrosurgical vessel sealing and tissue welding. The output power is applied cyclically by a control system with tissue impedance feedback. The impedance of the tissue follows the cyclic pattern of the output power several times, depending on the state of the tissue, until the tissue becomes fully desiccated. High power is applied to cause the tissue to reach a high impedance, and then the power is reduced to allow the impedance to fall. Thermal energy is allowed to dissipate during the low power cycle. The control system is adaptive to tissue in the sense that output power is modulated in response to the impedance of the tissue.

A method for remotely power cycling a peripheral data storage system (PDSS) from a host system. The method comprises powering-up the PDSS from the host system based on a host-scheduled backup operation; transmitting pre-selected data to the PDSS from the host system based on the host-scheduled backup operation; and powering-down the PDSS from the host system based on the host-scheduled backup operation. Another method is for operating a PDSS for use with a host system configured to perform scheduled backup operations to the PDSS, the PDSS comprising a peripheral data storage device, a PDSS controller, and a peripheral data storage controller host interface adapted for communication with the host system. The method comprises powering-up the PDSS based on a host-scheduled backup operation; receiving data from the host system for storing in the peripheral data storage device; and powering-down the PDSS based on the host-scheduled backup operation.

A method of operation of a storage control system including: providing a memory controller; accessing a volatile memory table by the memory controller; writing a non-volatile semiconductor memory for persisting changes in the volatile memory table; and restoring a logical-to-physical table in the volatile memory table, after a power cycle, by restoring a random access memory with a logical-to-physical partition from a most recently used list.

The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises E-1,2-difluoroethylene. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and power cycle working fluids.

A method of preventing data loss in a data storage system includes supplying write data to a high speed volatile write buffer and supplying electrical power from an energy storage device upon detection of a primary power loss event. The backup electrical power is supplied to the write buffer and nonvolatile cache. Under backup power, the write data is transferred into the nonvolatile cache and the backup power is removed. Upon regaining main power, a data presence indication triggers a transfer of the write data from the nonvolatile cache to the long term storage media. The method may be implemented for a system to protect it from inadvertent power losses or it may implemented in a system where the long term storage device is power cycled to save power. The energy storage device is not necessarily needed in the power cycled system unless power failure protection is also desired.

A method of preventing data loss in a data storage system includes supplying write data to a high speed volatile write buffer and supplying electrical power from an energy storage device upon detection of a primary power loss event. The backup electrical power is supplied to the write buffer and nonvolatile cache. Under backup power, the write data is transferred into the nonvolatile cache and the backup power is removed. Upon regaining main power, a data presence indication triggers a transfer of the write data from the nonvolatile cache to the long term storage media. The method may be implemented for a system to protect it from inadvertent power losses or it may implemented in a system where the long term storage device is power cycled to save power. The energy storage device is not necessarily needed in the power cycled system unless power failure protection is also desired.

A wireless lighting control system has a plurality of control devices, some of which may be remotely-located. Each of the control devices is operable to be coupled to a source of power and to be assigned a unique device address. To assign a unique address to the control devices that are remotely-located, power is cycled to those control devices, i.e., by interrupting and restoring power to the control devices. The control device then transmits wirelessly a signal uniquely identifying the control device within a predetermined amount of time after the cycling of power. A list of unaddressed control devices that have recently been power cycled is generated. Each of the control devices on the list is then assigned and transmitted a unique device address.

A new system and method for communicating between a host device and one or more slave devices are presented. The system provides data error checking and correcting, data encryption, and robust slave address sequencing using a portion of a session key. The data encryption uses a second portion of the session key, which changes for each power cycle.

A combined heat and power cycle system includes a heat generation system having at least two separate heat sources having different temperatures. The combined heat and power cycle system includes a first rankine cycle system coupled to a first heat source among the at least two separate heat sources and configured to circulate a first working fluid. A second rankine cycle system is coupled to at least one second heat source among the at least two separate heat sources and configured to circulate a second working fluid. The first and second working fluids are circulatable in heat exchange relationship through a cascaded heat exchange unit for condensation of the first working fluid in the first rankine cycle system and evaporation of the second working fluid in the second rankine cycle system. At least one heat exchanger is disposed at one or more locations in the first rankine cycle system, second rankine cycle system, or combinations thereof.

A transmitter apparatus and a ballast / driver receiver apparatus are presented for transmitting control information through a lighting system power line connection to a ballast or driver in which the transmitter selectively interrupts power delivery in select AC line power cycles to indicate data of a first binary state an uninterrupted power cycles indicate a second binary state with the receiver decoding the message data bits of different binary states based at least partially on the interruptions.

The present invention provides a method of assigning a unique device address to a remotely-located control device in a wireless lighting control system having a plurality of control devices. Each of the control devices is operable to couple to a source of power and to be assigned a unique device address. The method first comprises cycling power to the remotely-located control devices, i.e., interrupting and restoring power to the control devices. The control device transmits wirelessly a signal uniquely identifying the control device within a predetermined amount of time after the cycling of power. A list of unaddressed control devices that have recently been power cycled is generated. Each of the control devices on the list is then assigned and transmitted a unique device address.

A method of allocating power to ports in an Ethernet switch, including: (1) assigning a configuration power to a selected port, wherein the assigned configuration power is less than a power supplied by the selected port to a powered, (2) enabling and powering the selected port in a single indivisible step, (3) determining the power limit of a device coupled to the selected port, (4) comparing the power supplied by the selected port to the device with the configuration power assigned to the selected port, and (5) if the power supplied by the selected port to the device is greater than the configuration power assigned to the selected port, then increasing the configuration power of the selected port to correspond with the power limit of the device.

An electric motor control apparatus of this invention estimates changes in temperature of a semiconductor device to compute temperature change amplitude 108 based on an output current signal 105 computed from a current flowing through the semiconductor device of a switching circuit 5, an operating frequency signal and a carrier frequency signal by a temperature change estimation part 11, and makes conversion into the number of power cycles 110 corresponding to the temperature change amplitude 108 from power cycle curve data stored in a power cycle curve data storage part 14 and computes a thermal stress signal 111 by a thermal stress computation part 13, and does life estimation of the semiconductor device based on the thermal stress signal 111 and produces an output to a display part 16 as a life estimation result signal 112 by a life estimation part 15a.

A resettable switching apparatus, useful in a GFCI receptacle, has an auto-monitoring circuit for automatically testing various functions and structures of the device. The auto-monitoring circuit initiates an auto-monitoring routine which, among other things, establishes a test fault situation on either the positive or negative half-wave of the power cycle and determines whether the detection mechanisms within the device appropriately detect the test fault and whether the device would trip in the event of an actual fault. Additional functionality of the auto-monitoring circuit permits automatic verification that the device is properly wired, that is, not miswired, and determines whether the device has reached the end of its useful life.

A method in a network computing system for managing configuration information for a set of components in a network computing system. The configuration information is stored for the set of components in the network computing system to form stored configuration information. In the depicted examples, the components may be nodes or devices within nodes. Current configuration is obtained in response to a power cycle. The current configuration information is compared with the stored configuration information to form a comparison. The stored configuration information is updated if a difference is present in the comparison. The stored configuration information is used to configure the components when a power cycle occurs.

The invention discloses a combined power circulating method capable of catching carbon dioxide (CO2) by using LNG (Liquefied Natural Gas) cold energy and a system thereof. The system comprises an air separation device, an oxygen-enriched-combustion gas turbine circulation device, a high-pressure steam power circulation device, a CO2 separation and liquefaction device and an LNG cold energy power circulation device, wherein the air separation device, the oxygen-enriched-combustion gas turbine circulation device, the high-pressure steam power circulation device, the CO2 separation and liquefaction device and the LNG cold energy power circulation device utilize the LNG cold energy. According to the method and the system, electricity and high-temperature fume which is rich in CO2 and water are generated from LNG through the oxygen-enriched-combustion gas turbine circulation device, and heat is recovered from the fume through the high-pressure steam power circulation device, so as to produce high-temperature and high-pressure steam with the pressure over 18MPa and increase the power generation efficiency of natural gas; moreover, the LNG cold energy is sequentially applied to the air separation device, the LNG cold energy power circulation device and the CO2 separation and liquefaction device, and the energy consumption for CO2 catching is lowered by making full use of the LNG cold energy, so that combined power cycle has relatively high power generation efficiency and relatively high CO2 catching rate, and the efficient utilization of the LNG cold energy is realized.

LNG cold is used in a plurality of cycles in a combined power plant to increase power output. Especially preferred plant configurations integrate a combined cycle power plant with a regasification operation in which in a first stage LNG cold provides cooling in an open or closed power cycle. Most preferably, a significant portion of the LNG is vaporized in the first stage. In a second stage LNG cold provides cooling for a heat transfer medium that is used to provide refrigeration for the cooling water to a steam power turbine and for an air intake chiller of a combustion turbine in the power plant.

An internal combustion engine power cycle wherein a combustion chamber is fitted with an inlet valve, an outlet valve, and movable piston coupled to perform work, includes an generator to form a stream of greater than about 95% molecular oxygen from atmospheric air and a nitrogen waste gas stream; a source of fuel; and a source of liquid water. The power cycle includes admission of the molecular oxygen into the chamber, injection of the fuel into the chamber with combustion, and injection of atomized water into the chamber for generation of steam.

Systems for generating electric power from wind are disclosed, which use buoyant aircraft and spinnaker sails to generate very large pulling forces, which will be used to drive electric generators. The buoyant aircraft, referred to as “airbarges”, will have large, wide, and flat shapes which combine various traits of kites, manta rays, and “flying wing” aircraft. They can be flown “nose up” during the pulling stage of each power cycle, and “nose down” during retrieval. Spinnaker sails are comparable to horizontal parachutes, with tethering systems that will enable them to be pulled back to a starting location in a “luffing flag” or “closed umbrella” configuration. Because of various factors, spinnaker sails can generate much greater power output and operating efficiency than 3-blade wind turbines. “Webbing sails” made from interwoven straps also are disclosed, which can be used even in extremely high winds.

System and method for implementing one time programmable (OTP) memory using embedded flash memory. A system-on-chip (SoC) includes a cleared flash memory array that includes an OTP block, including an OTP write inhibit field that is initially deasserted, a flash memory controller, and a controller. Data are written to the OTP block, including setting the OTP write inhibit field to signify prohibition of subsequent writes to the OTP block. The SoC is power cycled, and, in response, at least a portion of the OTP block is latched in a volatile memory, including asserting an OTP write inhibit bit based on the OTP write inhibit field, after which the OTP block is not writeable. In response to each subsequent power cycling, the controller is held in reset, the latching is performed, the controller is released from reset, and the flash array, now write protected, is configured to be controlled by the controller.

The present invention generally relates to power generation methods and secondary processes yielding a supply of carbon dioxide. In one embodiment, the present invention relates to a supercritical carbon dioxide cycle power generator utilizing at least a portion of waste heat from the secondary process that also provides at least a portion of carbon dioxide within the supercritical carbon dioxide cycle.

A logical partition (LPAR) computer system for managing partition configuration data is disclosed, which includes a nonvolatile memory, and a plurality of logical partitions, each running independently from the other logical partitions. The system also includes a console coupled to the computer system for accepting logical partition configuration data input by an operator. The configuration data entered by the operator specifies the processors, I / O, and memory allocated to each logical partition defined for the system. The system further includes a set of tables maintained in the nonvolatile memory for storing the logical partition configuration data, such that the logical partition configuration data is persistent across system power cycles.

The invention relates to an IGBT module life prediction method under a non-stationary working condition. The method comprises the following steps: 1) investigation on degradation mechanisms of an IGBTmodule; 2) establishment of an electrical model of the IGBT module; 3) parameter decoupling of the IGBT electrical model based on Simulink; 4) junction temperature on-line monitoring with degradationcharacteristics being considered; 5) establishment of a narrow junction temperature amplitude life prediction model; 6) construction of a power cycle test platform; 7) establishment of a narrow junction temperature amplitude life prediction model; and 8) establishment of an IGBT module life prediction model under the non-stationary working condition. The method is characterized by, to begin with,calculating a junction temperature-time curve of a power module under actual working conditions based on a device electro-thermal model and a work mission profile, and extracting corresponding junction temperature fluctuation information; then, calculating cumulative damage to the device caused by different junction temperature fluctuations based on the life prediction model of the power module;and finally, evaluating MTTF of the IGBT module under actual working conditions by combining the cycle times of each junction temperature stress. The method belongs to the technical field of life evaluation of the IGBT module.

An engine structure and mechanism that operates on various combustion processes in a two-stroke-cycle without supplemental cooling or lubrication comprises an axial assembly of cylindrical modules and twin, double-harmonic cams that operate with opposed pistons in each cylinder through fully captured rolling contact bearings. The opposed pistons are double-acting, performing a two-stroke engine power cycle on facing ends and induction and scavenge air compression on their outside ends, all within the same cylinder bore. The engine includes a novel compressor arrangement having an intake valve comprising a V-shaped double reed valve with an apex pointing toward the intake port and an exhaust valve having a V-shaped double reed valve with an apex pointing away from the exhaust port. The compressor arrangement may further include rectangular intake and exhaust ports, a rectangular piston rod and rectangular crosshead bearings.

In-home communication systems 110 and 130 and an access communication system 120 are caused to coexist by TDM in synchronization with a power cycle, and a communication system which needs to secure AV-QoS assigns transmission timing to a slave station in itself by synchronizing a beacon cycle with a cycle of a power line.