68 results about "Power transfer function" patented technology

A DC power converter enclosing a regulated AC power supply within the overall design topology. The power transfer function incorporates a process wherein a portion of the negative AC signal, generated across the input winding of a power transformer, is intercepted by a power switch transitional state. The volt-second product of the intercepted AC signal is reflected into the DC input line voltage as an additive element allowing a resonant inductor to absorb the sum of both components. Thus peak voltage transferred to a resonant capacitor is two times the sum of voltage absorbed by the resonant inductor as opposed to simply doubling the DC input line voltage. Voltage across the resonant capacitor remains constant for variations in DC input line voltage within the limits of the input voltage regulating band. This is due to an inverse relationship between the DC input line voltage and voltage yielded by the negative AC signal, at point of interception by the timing pulse. The two components combine in a subtractive manner to cancel out the variation in DC input line voltage and maintain a constant voltage to the input of the AC power supply loop. Input current supplied by the Input DC line also varies inversely proportional to the applied input DC voltage within the regulating band. Thus: negative resistance describing a constant-power load line is derived directly from the peak input current.

A DC power converter enclosing a regulated AC power supply within the overall design topology. The power transfer function incorporates a process wherein a portion of the negative AC signal, generated across the input winding of a power transformer, is intercepted by a power switch transitional state. The volt-second product of the intercepted AC signal is reflected into the DC input line voltage as an additive element allowing a resonant inductor to absorb the sum of both components. Thus peak voltage transferred to a resonant capacitor is two times the sum of voltage absorbed by the resonant inductor as opposed to simply doubling the DC input line voltage. Voltage across the resonant capacitor remains constant for variations in DC input line voltage within the limits of the input voltage regulating band. This is due to an inverse relationship between the DC input line voltage and voltage yielded by the negative AC signal, at point of interception by the timing pulse. The two components combine in a subtractive manner to cancel out the variation in DC input line voltage and maintain a constant voltage to the input of the AC power supply loop. Input current supplied by the Input DC line also varies inversely proportional to the applied input DC voltage within the regulating band. Thus: negative resistance describing a constant-power load line is derived directly from the peak input current.

A process for deriving a power transfer function of a circuit. The power transfer function can be used to represent the real time power consumption of a circuit based on the status of the inputs. In one embodiment, the power transfer function is derived from frequency domain analysis of signals applied to the inputs of a circuit during tests of the circuit. In one embodiment, the inputs of the circuit are grouped in groups based on a commonality of power consumption of the signals. The inputs may be grouped by clustering squared coherencies associated with the inputs. The transfer function may be implemented in a power monitoring circuit having inputs coupled to the inputs of the circuit to provide a real time estimation of power consumption of the circuit.

A docking station connects through a docking port and docking cable with an information handling system to support communication between the information handling system and docking station peripherals. On initial interface, one data lane of the docking port establishes a temporary management interface, such as an I2C management bus, to configure the docking station. After configuration, a docking manager, virtual wireless access point and power block cooperate to assign data lanes of the docking port and wireless communication resources to information transfer and power transfer functions based upon processing and communication tasks performed at the information handling system.

A docking station connects through a docking port and docking cable with an information handling system to support communication between the information handling system and docking station peripherals. On initial interface, one data lane of the docking port establishes a temporary management interface, such as an I2C management bus, to configure the docking station. After configuration, a docking manager, virtual wireless access point and power block cooperate to assign data lanes of the docking port and wireless communication resources to information transfer and power transfer functions based upon processing and communication tasks performed at the information handling system.

The invention discloses a power transmission mechanism of a gas compressor and a turbine, which is used for a mini-type ground gas turbine. The power transmission mechanism comprises a gas compressor impeller and turbine back tooth transmission mechanism, and a turbine shaft end conical surface nut locking device; the gas compressor impeller and turbine back tooth transmission mechanism is formed by engaging the turbine with a straight-line trapezoid back tooth and the gas compressor impeller with a straight-line trapezoid end tooth with each other; and the turbine shaft end conical surface nut locking device is formed by matching a locking nut with a conical surface with a shell, and is used for axially locking an engaging gear ring. The power transmission mechanism has the advantages of simple mechanism form, low machining cost and reliable transmission; and on the precondition of realizing a power transmission function of the gas compressor and the turbine, the axial size of the gas turbine is effectively shortened and the mechanism compactness is improved.

Apparatus and methods for compensation of asymmetric mode pulling in external cavity lasers and the like. An apparatus includes a wavelength locker or etalon device to provide an asymmetric power transfer function and generate a transmission peak or peaks of asymmetric shape. The asymmetry of the transmission peak may be in the form of a steeper slope on the long wavelength side of the peak than on the short wavelength side. The asymmetry of the transmission peak or peaks may be structured to compensate or correct for asymmetric mode pulling effects that arise in laser gain media during single mode laser operation.

An optical IQ modulator (IQM) including two parallel Mach-Zehnder modulators (MZM1, MZM2) generates single sideband data signals. A control unit (18) generates additional optical single sideband pilot signals (PS1, PS2) positioned in a lower and a higher sideband respectively, and also further pilot signals (PS3, PS4) in both sidebands. A IQ modulator output signal (MOS) converted into electrical monitoring signals (MOS) and monitored. A control unit (18) selects control signals (CS12, CS3, CS4) and controls the IQ modulator via its bias ports (6, 7, 8) till the power transfer functions (PTF) of the Mach-Zehnder modulators (MZM1, MZM2) and the phase difference (ΔΦ) between their output signals is optimized.

Embodiments describe a wireless charging system including an accessory device and a host device. The host device can include a housing having a charging surface and power transmitting circuitry coupled to a power source. The power transmitting circuitry can include an inductive transmitter coil configured to receive a first power and generate magnetic field, an amplifier coupled to the inductive transmitter coil and configured to output the first power to the inductive transmitter coil, an output sensor coupled to the inductive transmitter coil and configured to measure the first power to the inductive transmitter coil, and a power tracking controller coupled to the sensor probe. The power tracking controller can be configured to receive measurement of the first power, and generate a control signal based on the measured first power to modify an output impedance of the amplifier to output a second power different from the first power.

Provided is a friction clutch which includes a carbon / graphite material such as a CC composite and hence can show a stable power transmission function over a wide range of areal friction pressure. Also provided is a friction disk assembly usable in the friction clutch. The friction clutch includes a friction disk assembly configured of a center hub part and a friction disk. The friction disk is equipped with a first frictional surface and a second frictional surface. The friction clutch further includes: a flywheel which faces the first frictional surface and is equipped with a third frictional surface; and a pressure plate which faces the second frictional surface and is equipped with a fourth frictional surface. At least one of the first to the fourth frictional surfaces is constituted of a combination of different materials which are a carbon / graphite material and a metal / ceramic material. The carbon / graphite material forms a carbon / graphite material-based frictional surface, and the metal / ceramic material forms a metal / ceramic material-based frictional surface. The ratio of the area of the metal / ceramic material-based frictional surface to the total area of the carbon / graphite material-based frictional surface and the metal / ceramic material-based frictional surface is 0.05-0.65, and the areal pressures between the first frictional surface and the third frictional surface and between the second frictional surface and the fourth frictional surface during power transmission are 10-250 N / cm2 each.

The invention relates to the technical field of control of an inversion-type distributed power supply, in particular to a self-adaptive damping control strategy of a virtual synchronous generator technology (VSG)-based inversion-type distributed power supply. An active power transfer function is built for a control system of the VSG-based inversion-type distributed power supply, the self-adaptivedamping control strategy is made by analyzing influence of a damping coefficient on system output, and the strategy is used for changing the damping coefficient to achieve adjustment n system responserate and reduce fluctuation of the system generated by disturbance according to deviation between an active power output from the inversion-type distributed power supply in real time and a set activepower reference value. By the self-adaptive damping control strategy, control of the grid-connected inversion-type distributed power supply can be achieved, the output characteristic of the inversion-type distributed power supply is more excellent by the control strategy, the interference of the system can be handled very well, stable output is maintained, the control strategy has higher dynamiccharacteristic, and an effective strategy is provided for control of the inversion-type distributed power supply in a power distribution network.

A process for deriving a power transfer function of a circuit. The power transfer function can be used to represent the real time power consumption of a circuit based on the status of the inputs. In one embodiment, the power transfer function is derived from frequency domain analysis of signals applied to the inputs of a circuit during tests of the circuit. In one embodiment, the inputs of the circuit are grouped in groups based on a commonality of power consumption of the signals. The inputs may be grouped by clustering squared coherencies associated with the inputs. The transfer function may be implemented in a power monitoring circuit having inputs coupled to the inputs of the circuit to provide a real time estimation of power consumption of the circuit.