509 results about "Power processing" patented technology

A power and control architecture employing circuitry that sequentially regulate power flows from independent solar-array sources or a mixture of power sources providing power to a common load. The device may be used on a satellite with solar-array sources; however it may also be used on ground based systems. Stiff bus voltage regulation is obtained by tightly controlling the most recently activated power-processing channel while keeping the previously activated power-processing channels in the Maximum Power Tracking mode to supply maximum power to a common load. The remaining power-processing channels are turned off or operated in stand-by mode. In an alternative system, with primary design goal of uniform power sharing among solar-array sources, all solar array sources are activated with uniform power sharing at light load and, as load demand increases, sequentially controlled to operate in the Maximum Power Tracking mode one solar array source at a time as necessary.

A photovoltaic module-mounted AC inverter circuit uses one or more integrated circuits, several power transistors configured as switches, several solid-dielectric capacitors for filtering and energy storage, several inductors for power conversion and ancillary components to support the above elements in operation. The integrated circuit includes all monitoring, control and communications circuitry needed to operate the inverter. The integrated circuit controls the activity of pulse-width modulated power handling transistors in both an input boost converter and a single-phase or multi-phase output buck converter. The integrated circuit also monitors all power processing voltages and currents of the inverter and can take appropriate action to limit power dissipation in the inverter, maximize the available power from the associated PV module and shut down the inverter output if the grid conditions so warrant. The integrated circuit implements power line communications by monitoring the AC wiring for signals and generating communications signals via the same pulse-width modulation system used to generate the AC power. Communications is used to report inverter and PV module status information, local identification code and to allow for remote control of inverter operation.

The invention provides improved methods and apparatus for control using field and control devices that provide a virtual machine environment and that communicate via an IP network. By way of non-limiting example, such field device can be an “intelligent” transmitter or actuator that includes a low power processor, along with a random access memory, a read-only memory, FlashRAM, and a sensor interface. The processor can execute a real-time operating system, as well as a Java virtual machine (JVM). Java byte code executes in the JVM to configure the field device to perform typical process control functions, e.g., for proportional integral derivative (PID) control and signal conditioning. Control networks can include a plurality of such field and control devices interconnected by an IP network, such as an Ethernet.

Provided is a method of controlling a hybrid switch comprising a first individually controllable semiconductor switch operably coupled in parallel to a second individually controllable semiconductor switch. The first semiconductor switch has a faster switching speed and lower power-processing capability than the second semiconductor switch. A first reference value V_1REF for a first default turn-on transition time interval ΔT₁ and a second reference value V_2REF for a second default turn-off transition time interval ΔT₂ are accessed for the controllable hybrid switch, which is enabled and controlled so that it operates in accordance with V_1REF and V_2REF. The duration of the default ΔT₁ and ΔT₂ used to control operation of the controllable hybrid switch is dynamically adjusted to compensate for at least one of variations in a current to a load operably coupled to the controllable hybrid switch and environmental conditions at the controllable hybrid switch.

Disclosed herein is a controller architecture that pairs a controller with a NVM (non-volatile memory) storage system over a high-level, high speed interface such as PCIe. In one embodiment, the NVM storage system includes a bridge that communicates with the controller via the high-level interface, and controls the NVM via an interface (e.g., ONFI). The controller is provided a rich set of physical level of controls over individual elements of the NVM. In one embodiment, the controller is implemented in a higher powered processor that supports advanced functions such as mapping, garbage collection, wear leveling, etc. In one embodiment, the bridge is implemented in a lower powered processor and performs basic signal processing, channel management, basic error correction functions, etc. This labor division provides the controller physical control of the NVM over a fast, high-level interface, resulting in the controller managing the NVM at both the page and block level.

There is described an image processing apparatus, which makes it possible not only to eliminate the deterioration of the perceptibility, but also to determine the pages being suitable for applying the predetermined image processing. The control section determines specific pages, being suitable for applying a predetermined image processing, based on the attributes detected by the detecting section, so as to apply the predetermined image processing to the specific pages. On the other hand, the control section applies image processing, including a variable power processing, to both the partial image area and the partial character area by employing different magnification factors, so as to generate a size-changed partial image area and a size-changed partial character area, and to arrange both of them into a predetermined imaginary area being smaller than an area of the original image, so as to accommodate them within the predetermined imaginary area.

Various embodiments of methods and systems for thermally aware booting in a portable computing device (“PCD”) are disclosed. Because bringing high power consumption processing components online when a PCD is booted under less than ideal thermal conditions can be detrimental to the health of the PCD, embodiments leverage a low power processing component early in a boot sequence to authorize, delay or modify the boot sequence based on measured thermal indicators. One exemplary method is essentially a “go/no go” method that delays or authorizes completion of a boot sequence based on the thermal indicator measurements. Another exemplary method modifies a boot sequence of a PCD based on a thermal boot policy associated with a thermal boot state. A thermal boot policy may include allowing the boot sequence to complete by modifying the power frequency to which one or more high power consumption components will be booted.

The invention discloses a battery management and acquisition subsystem of a new energy vehicle. The battery management and acquisition subsystem contains a balancing algorithm identifying and balancing processing algorithm and comprises an MCU (microprogrammed control unit) module, an LTC6802 module, a single voltage acquisition/discharge circuit, a whole-set and half-set acquisition circuit, a temperature acquisition module, a CAN (controller area network) communication module, an acquisition subsystem sequence address setting module, a power processing module and a digital optocoupler isolation module. 12 channels of single voltages of battery sets are acquired by an LTC6802 core technology, whole-set and half-set voltages are acquired, and 16 temperatures are acquired by a temperature acquisition circuit. A battery management system is provided with four channels of CAN nodes, each CAN node accesses four battery management and acquisition subsystems, accordingly, voltages of the maximum 192 single batteries can be acquired, 16 whole-set voltages, 16 half-set batteries and 256 temperatures can be acquired, and the service requirement of the current new energy vehicle can be met completely.

The invention discloses a Ti-based powder preparing device and a Ti-based powder preparing method. The device comprises a vacuum chamber, a magnetic suspension melting furnace, an atomization power processing chamber and a screening system. During working, when the magnetic suspension melting furnace is energized with high frequency alternating current, a high frequency alternating magnetic field can be produced in space around a coil, and the high frequency alternating magnetic field causes induction vortex in furnace charge. The induction vortex and the external alternating magnetic field interact with each other to produce suspension force for the furnace charge, and the suspension force is balanced with the dead weight of the furnace charge so as to enable the furnace charge to suspend; meanwhile, a vortex circuit generates a great deal of heat to melt the furnace charge, and the molten mass is subjected to deslagging, degassing and purification under the fierce function of electromagnetic stirring. The purified molten mass can fall into a gas atomization chamber by virtue of controlling the magnetic field; under the functions of a supersonic speed high-pressure argon atomizer and a cooling device, the molten mass is atomized into spherical Ti-based powder with high degree of sphericity, oxygen content of less than 1800 ppm and nitrogen content of less than 300 ppm.

A package comprises a substrate with a plurality of metal tracks, a via hole formed in the substrate, wherein the sidewall of the via hole is partially plated and the via hole is filled with a magnetic material, and a first winding magnetically coupled to the via hole.

A power processing interface for a radio frequency identification system is provided. The power processing interface includes a resonance circuit for inducing a first signal transmitted from a terminal as an AC voltage, a first rectifier circuit electrically connected to the resonance circuit for converting the AC voltage into a DC voltage, a filter circuit electrically connected to the first rectifier circuit for generating an operating voltage in response to the DC voltage, a voltage-detecting circuit electrically connected to the filter circuit and the first rectifier circuit for detecting the magnitude of the operating voltage, a second rectifier circuit electrically connected to the resonance circuit, and a voltage-clamping modulation circuit electrically connected to the first rectifier circuit, the voltage-detecting circuit and the second rectifier circuit for controlling the conduction of the second rectifier circuit in response to the output of the voltage-detecting circuit so as to bypass the excessive current, and for providing a minimum voltage to the radio frequency identification system during the modulation process so as to keep the radio frequency identification system in a normal operation.

Methods and apparatus for power-based scheduling of tasks among processors are disclosed. A method may include executing processor executable code on one or more of the processors to prompt a plurality of executable tasks for scheduling among the processors. Processor-demand information is obtained about the plurality of executable tasks in addition to capacity information for each of the processors. Processor power information for each of the processors is also obtained, and the plurality of executable tasks are scheduled on the lowest power processors where processor-demands of the tasks are satisfied.

The invention provides a multifunctional wireless Mesh gateway device for a multi-RF (Radio Frequency) mine and a control system thereof. The device comprises a main control system board, a subsystem board and the like, wherein the main control system board comprises a main controller, a main control system power processing module, a ZigBee communication module and an energy-saving control circuit; and the subsystem board comprises a sub controller, a subsystem power processing module, a WiFi intelligent access card and the like. The control system comprises a hardware equipment bottom layer drive system, an embedded type operation system, an energy-saving control system and a multifunctional Mesh gateway control system. The invention has the advantages that the device can support simultaneous transmission of multimedia business in a multi-RF channel WiFi wireless Mesh network and a ZigBee wireless Mesh network, realizes network fusion of an industrial ethernet, a field bus and a WiFiwireless local area network, supports high reliability communication and self-organized networking and supports communication energy-saving control. The stand-by service life can be efficiently prolonged.

The invention provides a multi-radio frequency (RF) mining multifunctional wireless Mesh router device and a control system thereof. The device comprises a master control system board, a subsystem board and the like, wherein the master control system board comprises a master controller MCU, a master control system power processing module, a ZigBee communication module, a wireless transmission power control circuit, an energy conservation control circuit and the like; the subsystem board comprises a sub-controller CPU, a subsystem power processing module, a WiFi intelligent access card and the like; and the control system comprises a hardware device bottom driving system, an embedded operating system, an energy conservation control system, a multifunctional Mesh router control system and the like. The router device and the control system have the advantages of supporting simultaneous transmission of multimedia services in multi-radio frequency channel WiFi and ZigBee wireless Mesh networks, high-reliability communication, self-organizing networking and various types of flexible access of the service, along with high communication anti-interference capacity, low cost, long standby life and great suitability for the field of mine wireless communication.

The invention discloses a meteorological-information-based photovoltaic power generation active power online evaluation method, which comprises the following steps of: 1, selecting a reference point, a reference direction and a sample photovoltaic panel, and setting a data acquisition moment t to be an initial moment 0; 2, acquiring the axial directions of the photovoltaic panel and photometric equipment; 3, acquiring the geographical position information and dip angle data of the photovoltaic panel and the photometric equipment; 4, acquiring solar irradiation sample data, prediction data and cloud cover monitoring data measured by the photometric equipment; 5, preprocessing the solar irradiation sample data and the prediction data; 6, preprocessing the cloud cover monitoring data; 7, computing the active power output of a photovoltaic component; and 8, obtaining a photovoltaic power generation active power characteristic curve. In the method, the data actually measured by the photometric equipment in the given time period of 1min is taken as a basis and the influence of a cloud cluster on a photovoltaic power station is comprehensively taken into account to obtain the photovoltaic power generation active power characteristic curve in the future 0 to 5min by approximately equal power processing and curve fitting, so active power characteristic analysis efficiency and accuracy are effectively improved, and the bases are provided for the formulation and regulation of complementary running policies and energy efficiency management policies of joint power generation systems utilizing a plurality of power supplies such as wind, sunlight and the like.

The invention discloses a system and a method for simulating motor vehicle driving sound. The system comprises a driving module, a microprocessor connected with the driving module, a memory connected with the microprocessor, an audio processing module connected with the microprocessor, an audio driving module connected with the audio processing module, a loudspeaker connected with the audio driving module and a power processing module for converting an external voltage source into a nominal voltage source. The system can simulate the driving sound of a motor vehicle under the same state accurately. According to simulation of the driving sound of motor vehicle, the system can help pedestrians to judge vehicle type, speed and distance of a coming vehicle accurately so as to enable the pedestrians to be ready in advance, and therefore accidents of collision of an electric automobile and a person accidentally can be avoided effectively.

Embodiments include a power processing system and methods of its operation in a plug-in electric vehicle. The power processing system includes at least one AC electric motor, a bi-directional inverter system, and an electronic control system. The electronic control system provides a drive function by providing first control signals to the bi-directional inverter system which, in response, draws DC electrical power from a DC energy source, converts the DC power to AC power, and provides the AC power to windings of the at least one AC electric motor. The electronic control system also provides a charging function by providing second control signals to the bi-directional inverter system which, in response, draws AC power from the windings of the at least one AC electric motor, converts the AC power to DC power, and provides the DC power to the DC energy source in order to recharge the DC energy source.

A mobile station device includes a device for transmitting an access packet to a base station device, and a device for retransmitting the access packet when no acknowledgement is received from the base station in response to the transmission of the access packet. The mobile station device also includes a received power processing section for sequentially storing received power of a pilot signal transmitted from the base station, and determining transmission power at the retransmitting time of the access packet on the basis of these stored contents. A signal receiving section obtains interference amount information showing an interference amount in the base station. A data transmitting section transmits the access packet using power according to the interference amount information.