Abstract: Systems and methods for market-based financial settlement in an electric power grid are disclosed. At least one active grid element is constructed and configured in network communication with a settlement processor. The at least one active grid element participates in the electric power grid by consuming power, supplying power, and/or curtailing power to provide operating reserves and/or grid stability for the electric power grid. The at least one active grid element generates at least one kilowatt packet (KWP) unit based upon measured data for the participation in the electric power grid. The at least one active grid element transmits at least one IP-based settlement message to the settlement processor. The settlement processor provides a market-based financial settlement for the participation of the at least one active grid element based on the at least one KWP unit in real time or near real time.

Abstract: A bowed rotor prevention system for a gas turbine engine of an aircraft is provided. The bowed rotor prevention system includes a gear train and a bowed rotor prevention motor operable to drive rotation of a starting spool of the gas turbine engine through the gear train at a substantially constant speed upon engine shutdown until an energy storage source is depleted.

Abstract: A bowed rotor prevention system for a gas turbine engine of an aircraft is provided. The bowed rotor prevention system includes a gear train and a bowed rotor prevention motor. The gear train is coupled through an engine accessory to an engine accessory gearbox that is further coupled to a starting spool of the engine. The bowed rotor prevention motor is operable to drive rotation of the starting spool of the gas turbine engine through the gear train upon engine shutdown.

Abstract: Systems, methods, and apparatus embodiments for electric power grid and network registration and management of physical and financial settlement for participation of active grid elements in supply and/or curtailment of power. Settlement is provided for grid elements that participate in the electric power grid following initial registration of each grid element with the system, preferably through network-based communication between the grid elements and a coordinator, either in coordination with or outside of an IP-based communications network router. A multiplicity of active grid elements function in the grid for supply capacity, supply and/or load curtailment as supply or capacity, and are compensated through settlement for their functional participation in the electric power grid.

Abstract: Systems and methods for market-based financial settlement of transactions within an electric power grid are disclosed. At least one active grid element is constructed and configured in Internet Protocol (IP)-based network communication with a settlement processor via at least one coordinator in real-time or in a predetermined timeframe. The at least one active grid element generates revenue grade metrology data based on measurement and verification for a participation of the at least one active grid element in the electric power grid. The at least one active grid element provides automated messaging to the settlement processor. The settlement processor provides a market-based financial settlement message based upon the revenue grade metrology data and a kilowatt packet (KWP) unit. The KWP unit provides a quantifying market rate for monetization for any unit of kilowatts with respect to time.

Abstract: A system for controlling a variable turbocharger includes: a first controller outputting a duty value for adjusting an opening degree of a vane of a turbocharger, and a second controller checking opening or closing operations of the vane when the first controller adjusts the opening degree of the vane. In particular, the second controller outputs a corrected duty value by correcting the output duty value, based on a correction map, in consideration of a back pressure according to whether the vane is opened or closed.

Abstract: A method of shaving peak power consumption by a facility includes determining a target peak demand setpoint for a facility and measuring power consumed by the facility. An electrical storage system (ESS) is charged when the measured power consumption is below the target peak demand setpoint. Additionally, the ESS is discharged and provides power to the facility when the measured power consumption is above the setpoint. Further, as data for the facility and ESS changes, the target peak demand setpoint is updated.

Abstract: Disclosed are various embodiments for a motor/generator where the stator is a coil assembly and the rotor is a magnetic toroidal cylindrical tunnel or where the rotor is a coil assembly and the stator is a magnetic toroidal cylindrical tunnel, and where the magnetic toroidal cylindrical tunnel comprises magnetics having a NNSS or SSNN pole configuration.

Abstract: Disclosed are various embodiments for a motor/generator where the stator is a coil assembly and the rotor is a magnetic toroidal cylindrical tunnel or where the rotor is a coil assembly and the stator is a magnetic toroidal cylindrical tunnel, and where the magnetic toroidal cylindrical tunnel comprises magnets having a NNSS or SSNN pole configuration.

Abstract: A method of electricity production using water thermal energy includes compressing an enclosed working fluid at a first vertical position relative to a surface of a body of water to cause the fluid to move to a second vertical position relative to the surface and subsequently move to the first position in a closed loop, an external environment at the second position having a greater temperature than an external environment at the first position such that the fluid transitions between a liquid phase at the first position and a vapor phase at the second position, the compressing using power from a battery, and expanding the fluid at the second position to generate electricity to charge the battery. The first and second positions may be two depths of the body of water or a height of an atmosphere above the body of water and a depth of the body of water.

Abstract: An electric multimode power converter module includes an AC/DC converter, including a first AC port; a DC/AC converter, including a second AC port; a DC/DC converter, including a DC port; a controller; and a communication bus interconnecting the converters. The controller includes a hardware configuration port and sets the module in the following states, based on the value read from the configuration port: a first state in which the module transfers power between the first AC port and the DC port, a second state in which the module transfers power between the DC port and the second AC port, and a third state in which the module transfers power between the AC ports and the DC port. A power supply system includes a shelf device including at least one compartment, and an electric multimode power converter module as mentioned above is inserted in the at least one compartment.

Abstract: A combined heat and power system, or an energy system, is provided. A four-stroke opposed-piston engine provides efficient power from a generator set or genset. A heat exchange system is provided within the energy system to provide efficient waste heat recovery as the engine is operated.

Abstract: A gate driver unit is presented. The gate driver unit includes a first power exchanging coil operatively coupled to a power source. The gate driver unit includes a second power exchanging coil configured to receive power from the first power exchanging coil via a magnetic field and a field focusing element disposed between the first power exchanging coil and the second power exchanging coil and configured to focus the magnetic field onto the second power exchanging coil. The gate driver unit also includes a first circuit coupled to the second power exchanging coil. The gate driver unit includes a gate drive subunit operatively coupled to the first circuit and configured to provide an output signal to a control terminal corresponding to a controllable switch of a second circuit. A magnetic resonance imaging system and a method of contactless power transfer in a magnetic resonance imaging system are also presented.

Abstract: The present invention relates to a wet evaporation-based cold concentration system, which is mainly applied to the technical field of air conditioners, and particularly applied to the technical field of heat-source tower heat-pump air conditioners. By utilizing a wet evaporation theory, a low-temperature low-concentration anti-freezing solution is enabled to contact low-temperature air in a wet evaporator to perform the heat and mass transfer, and water in the anti-freezing solution is vaporized at a low temperature into the air, thereby obtaining the high-concentration anti-freezing solution.

Abstract: A boiler includes one or more evaporators configured to heat water which has flowed therein to a specific heat maximum temperature at constant pressure or more in which a specific heat at constant pressure is maximized using a heated fluid and one or more reheaters configured to heat the steam which has come from the boiler using the heated fluid. All the reheaters configured to supply steam to a low-pressure steam turbine are disposed only at a downstream side of the high-pressure evaporator. All the reheaters heat reheating steam (FRHS) containing steam which has passed through a high-pressure steam turbine configured to receive steam supplied from the high-pressure evaporator and having a temperature lower than a specific heat maximum temperature at constant pressure in the high-pressure evaporator to less than the specific heat maximum temperature at constant pressure.

Abstract: The invention relates to a method for starting a steam turbine. The method involves pre-warming the steam turbine with a steam in which 65% of an energy used to pre-warming the steam turbine is derived from a latent heat energy of the steam.

Abstract: A power system includes a bus, a first controller and one or more second controllers. The first controller is configured to excite a first generator to generate electric power on the bus in response to initiation of rotation of the first generator. The one or more second controllers are configured to excite one or more respective second generators with a constant excitation in response to initiation of rotation of the first generator. The second generator(s) are electrically coupled with the bus and configured to operate as a motor to commence synchronous rotation with the first generator in response to electric power being present on the bus. The second controller(s) are further configured to initiate dynamic adjustment of the excitation of the second generator(s) to generate electric power on the bus with the second generator(s) in response to the first generator and the second generator(s) synchronously reaching a predetermined rotational speed.

Abstract: A decoupled gas turbine engine includes a high spool assembly and a low spool assembly each having a rotational axis that are spaced from one-another. The engine further includes a combustor that may have a centerline spaced from the rotational axes of each spool assembly. Turning ducts of the engine are configured to re-direct airflow from one spool assembly to the next and/or between one spool assembly and the combustor.

Abstract: A method of operation of a turbogenerator system is described. The system comprises a plurality of turbogenerators provided in parallel and in fluid communication with a gas stream. The method comprises identifying one or more of the turbogenerators which are currently operating closest to their maximum power output, and adjusting the speed of one or more of the turbogenerators to cause the power outputs of the plurality of turbogenerators to become more similar. In this way, it is possible to match the power output of the plurality of turbogenerators.

Abstract: A gas turbine having a compressor, a turbine unit, at least one combustion chamber and a secondary air system, which secondary air system has at least one cooling line having a compressor-side inlet for removing cooling air from the compressor and a turbine-side outlet for leading the cooling air onward into the turbine unit, wherein the cooling air line at the compressor-side inlet is connected fluidically to a housing opening of the gas turbine which adjoins a cavity in the gas turbine and which, during operation, guides compressor air, and wherein the housing opening is formed as a manhole.

Abstract: A gas turbine engine system includes a gas turbine engine, an electric machine, a fuel pump, and a clutch arranged to selectively couple and decouple the electric machine and the fuel pump with the gas turbine engine. Control circuitry may control the clutch in response to data signals indicating engine operating information, current operating conditions, and/or other information.

Abstract: Provided is a parallel fieldbus network-based motor control system including one or more slave modules each including a basic processor and an auxiliary processor that control one or more motors, and a master module including at least one master controller that generates command data for controlling each of the one or more motors. The master module further includes a basic network master controller, an auxiliary network master controller and a wireless network master controller, and the slave module includes a basic network slave controller, an auxiliary network slave controller and a wireless network module.

Abstract: A method and system are disclosed for operating a gas turbine power plant with flue gas recirculation, in which variable compressor inlet guide vanes are controlled as a function of flue gas recirculation ratio and/or as a function of a process parameter which is indicative for the flue gas recirculation. A controller setpoint position of the variable compressor inlet guide vanes can be controlled as a function of a position of a control element for controlling flue gas recirculation flow.

Abstract: A system includes a turbine having one or more turbine stages and a turbine support system, which may include a turbine support component, a motor coupled to the turbine support component, an auxiliary component, and a first cable interface coupled to the motor and the auxiliary component, and a motor control system. The motor control system includes a controller, a power source coupled to the controller, a second cable interface coupled to the power source, and a cable having a first plug removably coupled to the first cable interface and a second plug removably coupled to the second cable interface. The cable includes a plurality of insulated conductors. The first plug and the first cable interface include a first set of mating motor connectors and mating auxiliary connectors, and the second plug and the second cable interface include a second set of mating motor connectors and mating auxiliary connectors.

Abstract: A turbine overspeed trip test data logging system is a portable system by which an operator can electronically gather and log data for a turbine overspeed test. A plurality of sensors can be affixed to various components of the turbine for gathering test data to be received and compiled into a turbine test log by a processing unit. A method for processing the gathered sensor data is also provided.

Abstract: A method for testing an overspeed protection apparatus of a single-shaft system that includes: a) operating the system at nominal speed and under electrical load, wherein the load is selected to be low enough that, after dropping the load, the speed of the system rises such that the speed remains below steam turbine threshold speed lower than gas turbine threshold speed, such that first overspeed protection is triggered when the speed of the steam turbine reaches the steam turbine threshold speed, and second overspeed protection is triggered when the speed of the gas turbine reaches the gas turbine threshold speed; b) dropping the load; c) increasing the mass flow of the steam introduced into the steam turbine and/or of the fuel introduced into the gas turbine such that the speed of the steam turbine reaches the steam turbine threshold speed; d) testing whether the first overspeed protection is triggered.

Abstract: In the context of electric power generation facilities, a system and method that enable control of maximum sustained rate of change in output to accommodate changing load conditions and to facilitate efficient use of system resources are disclosed. In accordance with aspects of the disclosed subject matter, a ramp rate for an electric generator source may be set, operating parameters may be monitored, rates of change or discrepancies of the operating parameters over time may be computed; and output signals may then be used selectively to control certain system components.

Abstract: A system a first mobile body configured to support a turbine engine and an auxiliary skid communicatively and fluidly coupled to the turbine engine. The auxiliary skid includes one or more interconnects configured to support a turbine engine component. The system also includes a second mobile body configured to support a generator. The first and second mobile bodies are configured to align a removable coupling between the turbine engine and the generator.

Abstract: The present invention relates to a method for controlling a wind power plant, the wind power plant comprising a plurality of wind turbine generators, each wind turbine generator comprising at least one power converter for providing active power and/or reactive power to an electrical grid, wherein the method is determining a required amount of reactive power provided by the plurality of wind turbine generators, and grouping the plurality of wind turbine generators into a first set of wind turbine generators and a second set of wind turbine generators based on a demand for reactive power; and supplying reactive power to the grid (20) from the first set of wind turbine generators and disconnecting the second set of wind turbine generators from the electrical grid (20) in response to a control demand, in order to minimize active power losses. The present invention also relates to a wind power plant arranged to perform the method.

Abstract: A hydraulic fracturing system for fracturing a subterranean formation is disclosed. In an embodiment, the system can include a plurality of electric pumps fluidly connected to a well associated with the subterranean formation and powered by at least one electric motor, and configured to pump fluid into a wellbore associated with the well at a high pressure; at least one generator electrically coupled to the plurality of electric pumps so as to generate electricity for use by the plurality of electric pumps; a gas compression system fluidly coupled to the at least one generator so as to provide fuel for use by the at least one generator; and a combustible fuel vaporization system gaseously coupled to the gas compression system so as to provide at least one of vaporized fuel or gasified fuel, or a combination thereof, to the gas compression system.

Abstract: A method for operating a steam turbine plant including a steam turbine and a steam generator allows a power reserve to be provided whilst simultaneously maintaining a high level of efficiency in the normal mode of operation. The steam turbine plant includes a heat reservoir which is associated with the steam turbine, from which the steam is removed and is fed to the steam turbine. The steam is fed to the steam turbine when the steam generator is not in operation.

Abstract: An internal-combustion-engine supercharger includes a centrifugal compressor, a pre-compression flow path, a post-compression flow path, a bypass passage, and a control valve. The centrifugal compressor is disposed in an intake passage of an internal combustion engine and has an impeller to compress and discharge intake air using a radial centrifugal force generated by rotating the impeller. The intake air in the post-compression flow path is to be recirculated to the pre-compression flow path via the bypass passage. A connecting portion between the bypass passage and the pre-compression flow path is disposed at a position other than an extreme-bottom surface portion located at a lowest portion in a flow path section of the pre-compression flow path in a state where the internal-combustion-engine supercharger is installed in a vehicle. The control valve is disposed in the bypass passage to control a recirculation flow rate of the intake air.

Abstract: A converter and an operation method thereof are provided. A converter interconnected with a wind power generation farm includes a power monitor unit configured to detect a direct-current voltage of an entire system interconnected with the converter, a control unit configured to compare the detected direct-current voltage of the entire system with a reference voltage and adjust an alternating-current voltage that is supplied to the wind power generation farm to a preset value, and a switching unit configured to perform a switching operation based on the adjusted preset value to convert alternating-current power into direct-current power.

Abstract: A system tool that provides dispatchers in power grid control centers with a capability to manage changes. Included is a user interface and a plurality of scheduler engines. Each scheduler engine is configured to look ahead at different time frames to forecast system conditions and alter generation patterns within the different time frames. A comprehensive operating plan holds schedules generated by the plurality of scheduler engines. A relational database is coupled to the comprehensive operating plan. Input data is initially received from the relational database for each scheduling engine, and thereafter the relational database receives data from the scheduling engines relative to forecast system conditions.

Abstract: The invention offers a steam turbine forced air cooling system, its method, and a steam turbine provided with the system, the system being of an inexpensive and simple device configuration and improving a cooling effect by the use of an easy-to-get device. Suction is applied to the steam introduction side of an HP turbine 4 or an IP turbine 9 by the use of cooling air suction ejectors 27, 28 which use a compressed medium other than steam as a drive source. The cooling air is then introduced from the steam exhaust portion of the steam turbine into the inside of the steam turbine and is discharged from the ejectors 27, 28 to the atmosphere.

Abstract: In a method for synchronizing a feed voltage with a network voltage of an electrical energy supply network, a property of the feed voltage can be determined on the basis of a static characteristic curve. The static characteristic curve is compared to the property of the feed voltage of a feed power received by the electrical energy supply network at the applied feed voltage. The property of the feed voltage is adjusted to a specified value when a limit current of the feed power is reached.

Abstract: Systems, methods, and apparatus embodiments for electric power grid and network registration and management of physical and financial settlement for participation of active grid elements in supply and/or curtailment of power. Settlement is provided for grid elements that participate in the electric power grid following initial registration of each grid element with the system, preferably through network-based communication between the grid elements and a coordinator, either in coordination with or outside of an IP-based communications network router. A multiplicity of active grid elements function in the grid for supply capacity, supply and/or load curtailment as supply or capacity, and are compensated through settlement for their functional participation in the electric power grid.

Abstract: Systems, methods, and apparatus embodiments for electric power grid and network registration and management of physical and financial settlement for participation of active grid elements in supply and/or curtailment of power, wherein Internet Protocol (IP)-based messages including IP packets are generated by transforming raw data content into settlement grade content. Settlement is provided for grid elements that participate in the electric power grid following initial registration of each grid element with the system, preferably through network-based communication between the grid elements and a coordinator, either in coordination with or outside of an IP-based communications network router. Messaging related to settlement is managed through a network by a Coordinator using IP messaging for communication with the grid elements, with the energy management system (EMS), and with the utilities, market participants, and/or grid operators.

Abstract: Systems, methods, and apparatus embodiments for electric power grid and network registration and management of physical and financial settlement for participation of active grid elements in supply and/or curtailment of power. Settlement is provided for grid elements that participate in the electric power grid following initial registration of each grid element with the system, preferably through network-based communication between the grid elements and a coordinator, either in coordination with or outside of an IP-based communications network router. A multiplicity of active grid elements function in the grid for supply capacity, supply and/or load curtailment as supply or capacity, and are compensated through settlement for their functional participation in the electric power grid.

Abstract: Embodiments of the invention generally provide a heat engine system, a method for generating electricity, and an algorithm for controlling the heat engine system which are configured to efficiently transform thermal energy of a waste heat stream into electricity. In one embodiment, the heat engine system utilizes a working fluid (e.g., sc-CO2) within a working fluid circuit for absorbing the thermal energy that is transformed to mechanical energy by a turbine and electrical energy by a generator. The heat engine system further contains a control system operatively connected to the working fluid circuit and enabled to monitor and control parameters of the heat engine system by manipulating a power turbine throttle valve to adjust the flow of the working fluid. A control algorithm containing multiple system controllers may be utilized by the control system to adjust the power turbine throttle valve while maximizing efficiency of the heat engine system.

Abstract: To further optimize an operation of a power plant. The system has a storage cell which charges utilizing surplus electric power generated by a power plant 10 and a database 23 which accumulates at least information on power consumption for each power plant apparatus 11 (hereinafter, described as an in-plant apparatus). An integrated controller 225 compares power consumption of the power plant apparatus 11 in operation in the case of executing each function among a plurality of functions and an electric discharge capacity of the storage cell, and selects an executable function within a range of the electric discharge capacity of the storage cell. Then, it controls to execute the selected function utilizing electric power supplied from the storage cell.

Abstract: The invention relates to a pumped storage power plant (1) comprising at least one lower storage space (11) that is arranged underground and at least one upper storage space (12) that is separate from the lower storage space and arranged above ground or underground, wherein the lower storage space (11) is arranged in a greater depth than the upper storage space (12), and comprising at least one liquid line (15, 16) that is/are guided within the upper storage space (12) and within the lower storage space (11) respectively and that is/are connected to at least one hydraulic force and/or work machine (26, 27) of the pumped storage plant or can be connected via switchable valves (28, 29), and comprising at least one pressurized gas line (17, 18) that is/are guided within the upper storage space (12) and within the lower storage space (11) respectively and that is/are connected to a pressurized gas force and/or work machine (21, 22) of the pumped storage power plant or can be connected via switchable valves (24, 25

Abstract: Systems, methods, and apparatus embodiments for electric power grid and network registration and management of physical and financial settlement for participation of active grid elements in supply and/or curtailment of power, wherein Internet Protocol (IP)-based messages including IP packets are generated by transforming raw data content into settlement grade content. Settlement is provided for grid elements that participate in the electric power grid following initial registration of each grid element with the system, preferably through network-based communication between the grid elements and a coordinator, either in coordination with or outside of an IP-based communications network router. Messaging related to settlement is managed through a network by a Coordinator using IP messaging for communication with the grid elements, with the energy management system (EMS), and with the utilities, market participants, and/or grid operators.

Abstract: A waste heat power generator (G1, G2) that includes an evaporator (1) to produce steam of a working medium, a power-generating device to generate electric power while expanding the steam, a condenser (3) to condense the steam which has passed through the power-generating device (2), and a pump (5) to send the condensed working medium to the evaporator (1). The waste heat power generator (G1, G2) may further include a valve device (6) to selectively supply a cooling medium used to cool the power-generating device (2) to the power-generating device (2), and a controller (7) to control the valve device (6) based on the temperature of the power-generating device (2).

Abstract: A steam turbine plant of one embodiment includes at least one heater configured to change water into steam to produce high pressure steam and low pressure steam having a lower pressure than the high pressure steam, a high pressure turbine including a turbine or turbines connected to each other in series, and having a first inlet to supply the high pressure steam, a second inlet to supply the low pressure steam and located at a downstream of the first inlet, and an exhaust port located at a downstream of the second inlet, the high pressure turbine being configured to be driven by the steam supplied from the first and second inlets, a reheater configured to heat the steam exhausted from the exhaust port, and a reheat turbine configured to be driven by the steam from the reheater.

Abstract: A thermal energy harvester and power conversion system employs a bleed air duct containing the flow of high temperature air from an engine. A lower temperature air source is included with an energy conversion device having a hot interface operably engaged to the bleed air duct and a cold interface operably engaged to the lower temperature air source. The energy conversion device generates electrical power from a thermal gradient between the bleed air duct and the lower temperature air source and the electrical power is routed to a power feeder.

Abstract: Within the process a supercharged first combustion chamber is followed by: a first turbine, a second combustion chamber, a second turbine, and a preheating heat exchanger. Primary bleed water vapor coming from the secondary process, or a mixture of the bleed water vapor and air coming from the supercharger, are preheated. Secondary-process feed water is vaporized in a waste heat boiler. The combustion gases are expanded in the second turbine to a pressure 0.5 bar lower than that of the surrounding atmospheric pressure. The remaining combustion gases are compressed by a combustion-gas supercharger to the surrounding atmospheric pressure.

Abstract: A system for distributed utilities including electrical power and water. A generation device is provided for converting an available resource to a desired utility; the resource may be water, in which case the generator is a purifier for purifying untreated water, or, alternatively, the generator may convert a fuel to electrical power. In either case, an input sensor is provided for measuring input to the generation device, while an output sensor is provided for measuring consumption of output from the generation device. The monitoring system has a controller for concatenating measured input and consumption of output on the basis of the input and output sensors. Measured parameters are telemetered to a remote site where utility generation and use are monitored and may also be controlled.

Abstract: In one aspect of the teachings herein, demand responsive loads are selected for involvement in a given DR event using an advantageous approach to selection that is based on using a mathematical network model to evaluate power loss in a power distribution network as a function of different combinations of demand responsive load selections and corresponding load reduction values. The mathematical network model comprises a mathematical representation of the power distribution network as a multi-phase unbalanced distribution network, including mathematical representations of the physical components in the power distribution network and the connecting relationships of those components.

Abstract: Apparatus, systems, and methods are described that can be used to generate an operating schedule for a controller of an energy storage asset that is in communication with a transport vehicle, based on an optimization process. The operating schedule is generated based on an operation characteristic of the energy storage asset, an energy-generating capacity of the transport vehicle in communication with the energy storage asset based on a motion of the transport vehicle, and a price associated with a market (including a regulation market and/or an energy market). Operation of the energy storage asset according to the generated operating schedule facilitates derivation of energy-related revenue, over a time period T. The energy-related revenue available to the energy customer over the time period T is based at least in part on the regulation market and/or the energy market.