Abstract: The present disclosure relates to electrical machines and methods for cooling active elements of electrical machines. More in particular, the present disclosure relates to generators and methods for cooling adjacent active rotor elements and/or adjacent active stator elements of a generator of a wind turbine, e.g. of a direct drive wind turbine. An electrical machine comprises a rotor including a plurality of active rotor elements, a stator including a plurality of active stator elements, and an air gap separating the active rotor elements and the active stator elements. The electrical machine further comprises a radiation absorber arranged between a first and a second adjacent active rotor elements or between a first and a second adjacent active stator elements.

Abstract: An electric machine has a housing which has an interior space and an interior wall extending about the interior space, and a stator assembly disposed within the interior space and attached to the interior wall. The electric machine includes a rotor within the interior space and located radially inward from the stator. The rotor and stator define a gap there between and cooperate to produce flux. The rotor comprises a hollow cylindrical member having an interior region, an interior wall extending about the interior region and an exterior surface. The rotor includes magnets attached to the exterior surface and a rotor shaft support structure disposed within the interior region of the hollow cylindrical member and attached to the interior wall of the hollow cylindrical member. A rotor shaft is attached to the rotor shaft support structure. The electric machine further comprises bearings to locate and support the rotor shaft relative to the housing.

Abstract: A cooling system of a power generation system includes a generator cooling circuit having a first cooling fluid circulating therethrough. The generator cooling circuit includes a generator heat exchanger fluidly connected to a generator of the power generation system via the generator cooling circuit to cool the generator. A power converter cooling circuit has a second cooling fluid different from the first cooling fluid circulating therethrough. The power converter cooling circuit includes a power converter heat exchanger fluidly connected to a power converter of the power generation system via the power converter cooling circuit to cool the power converter.

Abstract: A rotary electric machine includes: a rotor; a shaft that penetrates the rotor along a rotation axis and is pivotally supported by a bearing; a stator accommodating the rotor inside; a rotor cover attached to an axial end surface of the rotor; and a casing having a flow passage for supplying oil to the bearing. The rotor cover has an oil receiving portion that forms a concentric clearance with respect to the shaft and receives the oil from the bearing in the clearance, and an oil distribution passage that communicates with the axial end surface of the rotor from the oil receiving portion. The rotary electric machine supplies the oil guided to the clearance to the oil distribution passage by centrifugal force to cool the rotor.

Abstract: An electric motor includes a rotor including a rotary shaft defining a first fluid channel configured to carry a cooling fluid, a rotor core including a plurality of permanent magnets and defining a second fluid channel in communication with the first fluid channel, and end rings mounted on opposite end portions of the rotor core. Each end ring includes injection holes in fluid communication with the second fluid channel and configured to inject the cooling fluid. Each end ring includes a plurality of rotary pins that are circumferentially arranged on an outer surface of the end ring, that are spaced apart from one another, and that are configured to circulate the cooling fluid injected through the plurality of injection holes into the first fluid channel.

Abstract: A method of DC-DC power conversion includes converting a DC link voltage to a DC output voltage for a load that is lower than the DC link voltage using a buck converter. The method includes controlling the buck converter in a normal switching mode in response to the DC link voltage, the DC output voltage, and the current of the load being within respective predetermined thresholds. The method includes controlling the buck converter in a light load switching mode in response the DC link voltage, the DC output voltage, and/or the current of the load being at or beyond the respective predetermined thresholds.

Abstract: A power conversion device is provided, and includes a major circuit part and a control device; the major circuit part includes a power conversion part converting, into AC power, power that is input, and a filter circuit causing the AC power output from the power conversion part to approach a sine wave; the control device controls power conversion by the major circuit part by controlling an operation of the power conversion part; the control device includes an overcurrent suppression controller; the overcurrent suppression controller calculates instantaneous value voltage output command values of the phases of the AC power output from the power conversion part to suppress an overcurrent at the output end of the major circuit part. Accordingly, a power conversion device and a control device of the power conversion device are provided in which the generation of an overcurrent can be suppressed even when a voltage-controlled operation is performed.

Abstract: A power converter includes two arms for each phase between DC terminals, and each arm is formed by connecting a plurality of converter cells in series. A control device includes an arm voltage command generation unit which generates, for each arm, an arm voltage command for the plurality of converter cells. The arm voltage command is generated by superimposing a zero-phase-sequence voltage command having a frequency component that is three times an AC fundamental frequency. Phase adjustment of the zero-phase-sequence voltage command is performed on the basis of voltage of a DC capacitor in the converter cell and the arm voltage command.

Abstract: A control device for a power converter includes a voltage command value limiting unit configured to limit each phase component or an absolute value of a vector of a voltage command value to be equal to or less than a value set in advance. With such a configuration, the control device for the power converter limits each phase component or the absolute value of the vector of the voltage command value to be equal to or less than the value set in advance. Therefore, it is possible to prevent overvoltage of the output from the power converter when impedance rapidly increases on the output side of the power converter.

Abstract: The invention relates to controlling an on-board charger for a battery of an electric vehicle to provide a more flexible output DC voltage range by adjusting a turn ratio of a transformer circuit to selectively integrate or exclude one of two winding portions of a primary winding of the transformer circuit.

Abstract: An integrated circuit for a power supply circuit, including: a first command value output circuit outputting a first command value to turn on a transistor of the power supply circuit for a first time period; an on signal output circuit outputting an on signal to turn on the transistor; a delay circuit delaying the on signal by a predetermined time period; a correction circuit correcting the first command value, to output a second command value to turn on the transistor for a second time period; and a driver circuit turning on and off the transistor based respectively on the delayed on-signal and the second command value. The correction circuit corrects the first command value based on the predetermined time period and a ratio between the second time period and another time period from when the transistor is turned off to when an inductor current of the power supply circuit reaches a predetermined value.

Abstract: Techniques and mechanisms for determining a mode of operation of a switched capacitor voltage regulator (SCVR). In an embodiment, a controller supports multiple modes of operation of the SCVR, wherein the modes each correspond to a different respective sequence of switch states of a converter core of the SCVR. One of the modes is to provide boost voltage regulation with the SCVR. The controller transitions seamlessly and autonomously between two modes based on respective reference switch states of the two modes. In another embodiment, a mode transition is performed based on a signal which a control sensor generates based on a rate of switch events of the voltage regulator, and predetermined reference information indicating current characteristics of the voltage regulator.

Abstract: A switching system is disclosed having a switching arm with a high-side switch and a low-side switch. A control system switches the switching arm alternately between a first configuration, in which the high-side switch is open and the low-side switch is closed, and a second configuration, in which the high-side switch is closed and the low-side switch is open. The control system commands, for each switching operation, the opening of the switch that is initially closed, and then, at the end of a dead time, commands the closure of the switch that is initially open. The system has device for measuring a switch voltage present between the terminals of one of the switches. For each switching operation, the control system, following the command to open the switch initially closed, monitors the measured switch voltage, and determine the dead time for the switching operation based on the monitored switch voltage.

Abstract: A power supply includes a first (main) power converter and a second (auxiliary) power converter disposed in parallel with the first power converter to produce an output voltage to power a dynamic load. The second power converter includes a primary inductive path magnetically coupled to a secondary inductive path. A controller controls a flow of first current through the primary inductive path of the second power converter to control flow of second current supplied by the secondary inductive path to the dynamic load. During steady state conditions, the first power converter produces the output voltage while the second power converter is deactivated. During transient load conditions, the second power converter provides current boost capability to maintain a magnitude of the output voltage within a desired range.

Abstract: A power supply circuit and techniques for voltage regulation are described. Certain aspects provide a method of supplying power by a power supply circuit. The method generally includes: generating an output voltage based on a voltage at a Vin node via a first transistor having a gate coupled to a gate of a second transistor, wherein a source of the second transistor is coupled to the Vin node and wherein a drain of the second transistor is coupled a drain of a third transistor; and sourcing a current to the third transistor, wherein during a light load condition of the power supply circuit, the current varies based on the voltage at a Vout node of the power supply circuit, and during a heavy load condition of the power supply circuit, the current is limited based on a current threshold.

Abstract: A control circuit for a switched-mode power converter to generate a control signal for controlling switching transistors in the power converter is disclosed. The control circuit includes: a comparator; a ramp compensation circuit for producing and applying a ramp compensation signal to a first or second input of the comparator; an on-time generation circuit to generate an on-time timer signal; and a control signal generation circuit to generate, based on the comparison signal and the on-time timer signal, the control signal for controlling the switching transistors in the power converter. The ramp compensation signal output from the ramp compensation circuit is configured with: a first slope during an inductor demagnetization interval in operation of the power converter in CCM and a second slope during an inductor demagnetization interval and a zero-current interval in operation of the power converter in DCM, the first slope is greater than the second slope.

Abstract: Disclosed is a control circuit of a boost DC-DC converter including a high side transistor and a low side transistor, and a load switch connected between the high side transistor and an output line of the boost DC-DC converter. The control circuit includes a pulse modulator that generates a pulse signal with a pulse modulated to bring an output voltage of the output line close to a target level, a logic circuit that generates a high side control signal and a low side control signal based on the pulse signal, a load switch drive circuit that drives a first PMOS transistor provided as the load switch, and a current detection circuit that generates a current detection signal indicating a current flowing through the first PMOS transistor. The load switch drive circuit is switchable between a first mode and a second mode.

Abstract: An output feedback control circuit includes, for example, a first amplifier configured to generate a first error signal commensurate with a difference between an output voltage, which is fed to a load, or a feedback voltage commensurate therewith and a reference voltage, a second amplifier configured to be faster than the first amplifier and to generate a second error signal commensurate with a difference between the output voltage or the feedback voltage and the first error signal (or the reference voltage), a calculator configured to superimpose a remote sense signal, which is derived from a grounded terminal of the load, on the reference voltage, which is fed to the first amplifier, and a capacitor connected between an application terminal for the first error signal and an application terminal for the remote sense signal.

Abstract: Systems and methods that automatically detect state of switches in power converters are disclosed. In one aspect, a power switch includes a first switch coupled between a power input node and a first terminal of a load, a second switch coupled between the power input node and a second terminal of the load, first and second current sense devices arranged to transmit first and second signals including at least one of a magnitude and polarity of first and second currents through the first and second switches, respectively, a first driver circuit arranged to transmit first control signals to the first switch based at least in part on a voltage at the power input node and the first signal, and a second driver circuit arranged to transmit second control signals to the second switch based at least in part on the voltage at the power input node and the second signal.

Abstract: This application relates to methods and apparatus for DC voltage conversion. A DC converter (100) is described, with a charge pump circuit comprising a plurality of charge pump stages (1401, 1402-1, 1402-2) each charge pump stage comprising connections for respective first and second capacitors for that stage (C1A, C1B; C2A, C2B; C3A, C3B). The charge pump also has a switch network, wherein the switch network comprises, between each successive stage, four switching paths (S7AA, S7AB, S7Ba, S7BB; S6AA, S6AB, S6Ba, S6BB) for separately connecting a respective first electrode of each of the first and second capacitors of one stage to a first electrode either of the first and second capacitors of the preceding stage, so that the relevant capacitor of the one stage can be charged by the relevant capacitor of the preceding stage.

Abstract: Various embodiments are directed to a switch circuit comprising: two terminal nodes, comprising an upper node and a lower node; a plurality of switch modules, connected in series between the upper node and the lower node, wherein each of the switch modules comprises a switch, a rectifier, and a capacitor; a connecting circuit, coupled to the switch modules; and a power converter, coupled to the connecting circuit and to a power sink. The switch circuit is configured to limit a voltage or a component of a voltage in the switch circuit, and to recover power from the limiting of the voltage, wherein recovering the power comprises diverting power from the switch modules via the connecting circuit to the power converter, and the power converter outputting the power to the power sink.

Abstract: A power converter includes a capacitor for smoothing a voltage entering therein, first and second switching units, a reactor, an isolated transformer, a second capacitor, and a controller for controlling the switching of the first and second switching units. The controller converts direct-current power to alternating-current power via the reactor and the isolated transformer and converts the alternating-current power to direct-current power via the second capacitor. The controller includes a phase-shift operation unit for taking at least any of first switching control signals as a reference signal and for calculating a phase shift that shifts the phase of the reference signal, as well as a logic operation unit for performing a logic operation that takes the signal resulting from shifting the phase of the reference signal by exactly the phase shift as input and for outputting a second switching control signal.

Abstract: An electrical device for a converter has at least one capacitor having a first connection and a second connection, a first busbar and a second busbar is disclosed. A respective busbar has a greater extension along a transverse direction than along a longitudinal direction, and has a greater extension along the longitudinal direction than along a vertical direction. The respective busbar has a first surface and a second surface which are opposite one other with respect to the vertical direction. The device also has a first contact-connection device electrically conductively contact-connected to the first connection and via which the first connection is electrically conductively connected to the first busbar, and a second contact-connection device electrically conductively contact-connected to the second connection via which the second connection is electrically conductively connected to the second busbar.

Abstract: The power converter includes a capacitor connected to a power conversion unit, and a busbar module having a busbar covered with a molded insulating resin. The busbar module includes a fixed portion provided integrally with the busbar module and fixed to a casing by a fastener. The fixed portion has a shape protruding toward the capacitor from the busbar when the busbar module and the capacitor are viewed in a height direction. The fixed portion is located between the busbar and the capacitor unit.

Abstract: An inverter converts power outputted from a distributed power supply into AC power, and outputs to an AC system. An inverter control circuit generates an AC voltage target value at a time of controlling the inverter, and generates a command value for control of the inverter as a voltage source. When the inverter is introduced into the AC system, the inverter control circuit sets a frequency of the AC voltage target value to a frequency of an AC voltage detected by an AC frequency detection circuit, and controls a phase of the AC voltage target value to be at least a leading phase with respect to the AC voltage of the AC system when a target value of the AC power is in a running direction.

Abstract: An example converter for a switched reluctance (SR) generator includes one or more gate driver circuits that are not only used to synchronously control switches, such as insulated gate bipolar transistors (IGBTs) of the converter, but also used to provide priming function during start-up of the generator. Since, an SR generator does not have to ability to self provide magnetic flux, priming current is provided to coils of the SR generator to initiate a magnetic flux. By using the gate drive circuit to provide the priming current, an additional priming circuit is not required. As a result, the converter design is more streamlined, with reduced complexity, cost, and size. When a bus voltage of the converter is below a threshold level, the one or more gate drive circuits can provide the priming current on the bus to initiate the SR generator.

Abstract: A power converter includes a control circuit executing feedback control of a first inverter based on a detected value of a first sensor adapted to a first rotating electrical machine. The first sensor detects a current of a first busbar adapted to the first rotating electrical machine. The first busbar connects the first inverter and the first rotating electrical machine. A second busbar adapted to a second rotating electrical machine connects a second inverter and the second rotating electrical machine. The second busbar is arranged to be apart from the first sensor interposed with a converter busbar between the second busbar and the first sensor. A current of the converter flows through the converter busbar.

Abstract: An electric power conversion apparatus includes: an electric power conversion circuit that allows a DC terminal to be connected to a DC power source via a DC bus line, and performs at least one of converting DC power of the DC power source into AC power to output, or converting AC power into DC power to output; a DC switch turned on when the electric power conversion circuit performs electric power conversion; an AC switch provided on a side of the AC terminal, and turned on when the electric power conversion circuit performs the electric power conversion; a DC voltmeter that measures a potential at a predetermined portion, on a side of the DC terminal; a ground connection portion that connects the DC bus line and ground potential; and a control circuit connected to the electric power conversion circuit, the DC switch, the AC switch, and the DC voltmeter.

Abstract: Systems and circuits relating to the integration of energy storage subsystems into components for use with systems that harvest energy from PV panels and that convert that energy for use with a power grid. Various configurations of inverters that integrate energy storage cells are presented. Half-bridge and full bridge configurations for the inverters are presented. The integrated energy storage cells may be battery cells, supercapacitor cells, or a combination of the two.

Abstract: A system including a proportional-integral-derivative (PID) controller, a modified relay feedback test (MRFT) block, a memory block, a biasing block, a dq0-to-abc transformation block, a switch configured to selectively couple output signal of the biasing block or the PID controller output signal to the input of the dq0-to-abc transformation block, a three phase digital pulse width modulator, electronic switches, a voltage sensor configured to measure the output of each voltage of the three phases on the load and produce voltage data signals (Voa, Vob, Voc), and an abc-to-dq0 transformation block having an input being a representative of the phase voltages on the load, and producing an output being a representative of these voltages in the dq0 format.

Abstract: A method for operating a power converter as an inverter between a DC voltage and an AC voltage grid is disclosed. For each AC voltage phase of the AC voltage grid, the power converter has at least one half-bridge which is connected to the AC voltage phase and has two semiconductor switches. Each semiconductor switch is reversed-connected in parallel with a diode. An activation angle range is determined for each semiconductor switch within an angle period, the lower range limit of which activation angle range is formed by subtracting a pre-firing angle from the lower range limit of a switch angle range, and the upper range limit of which activation angle range is formed by subtracting a pre-extinction angle from the upper range limit of the switch angle range.

Abstract: Described herein are devices incorporating Casimir cavities, which modify the quantum vacuum mode distribution within the cavities. The Casimir cavities can create energy differences within layers or device to drive energy from or to a portion of a layer disposed adjacent to or contiguous with the Casimir cavity by modifying the quantum vacuum mode distribution incident on one portion of the layer to be different from the quantum vacuum mode distribution incident on another portion of the layer. Additionally, Casimir cavities in which the cavity layer comprises a conductor that can be used to carry a flow of electrical power induced by the presence of the Casimir cavity.

Abstract: A transport system includes a mover, a stator, and a control unit. The mover moves in a first direction. The stator includes a plurality of coils arranged in the first direction and applies force to transport the mover in the first direction while using the plurality of coils, to which current is applied, to levitate the mover in a second direction intersecting the first direction. The control unit controls the current applied to the plurality of coils to control operation of the mover. The control unit controls the current applied to the plurality of coils using machine difference information of the mover to control an attitude of the mover while the mover is being levitated.

Abstract: A system for producing high-intensity electricity utilizing gravitational waves, the system (100) comprising a first quantum antenna (102) configured to capture gravitational waves, carrying the potential energy of the sun; a second quantum antenna (104) configured to capture gravitational waves, carrying the potential energy from sedentary supermassive black holes; a plasma collision roundabout (106) configured to allow collision of the gravitational waves, captured using the first quantum antenna (102) and the second quantum antenna ( ), fostering the fusion of atoms of the materials transported by each of the gravitational waves; a wave collision roundabout (108) configured to merge the gravitational waves captured using the first quantum antenna (102) and the second quantum antenna (104), to a fusion wave; a plurality of converters (110a-110n) configured to transform the intensity of the produced electric power; and a battery (112) configured to store the energy produced.

Abstract: Described is a method of controlling operation of a synchronous motor. The method comprises, during constant power/speed motor operation, determining a value of a stator voltage (vs2) for an orthogonal rotating reference frame of the motor. Comparing the value of the determined stator voltage (vs2) to a threshold voltage (vs_max12), said threshold voltage (vs_max12) having a value between that of a maximum stator voltage (vs_max02) for a basic speed mode of operation of the motor and that of a maximum stator voltage (vs_max22) of the motor closed loop controller. If the determined value of the stator voltage (vs2) is greater than or equal to the value of the threshold voltage (vs_max12), then controlling operation of the motor in a flux weakening mode of operation until a value of a current component (id??id) in a d-axis reaches a maximum negative value (?idmax), or until the value of the stator voltage (vs2) is less than the value of the threshold voltage (vs_max12).

Abstract: To provide a rotary electric machine apparatus which can perform current control which reduces a torque ripple component effectively, using a rotary electric machine in which the permanent magnet of the rotor has the skew structure which shifts the magnetic pole position in the circumferential direction at each position in the axial direction. When defining, as the current vector of most advanced phase, a current vector of current command values calculated on the dq-axis rotating coordinate system of most advanced phase, and defining, as the current vector of middle phase, a current vector of current command values calculated on the dq-axis rotating coordinate system of middle phase, the rotary electric machine apparatus brings a controlling current vector close to the current vector of most advanced phase from the current vector of middle phase, as the winding currents increase.

Abstract: An apparatus includes a controller that measures a first voltage across a first circuit path including a series connection of a first switch and a shunt resistor. The first voltage generated based on first current supplied from a first winding of a motor including multiple windings. Based on the magnitude of the first voltage, the controller determines an ON-resistance of the first switch. The ON-resistance can be used final office action any suitable purpose. For example, the controller can be configured to use the determined ON-resistance of the first switch to controller operation of a motor including the first winding. For example, the determined ON-resistance can be used as a basis to determine an amount of current through first switch and corresponding first winding of the motor.

Abstract: Provided is a work machine capable of improving workability. The work machine is provided with: a motor 14; a first power supply unit 180 connected to a battery pack 5 and supplying a boosted power to the motor 14; and a second power supply unit 130 connected to an external AC power supply and supplying a boosted power to the motor 14. The voltage and current of the first power supply unit 180 and the voltage and current of the second power supply unit 130 can be variably controlled by a control circuit 182 and a control circuit 136, respectively. The control circuits 136, 182 perform control so that the power output from the respective first power supply unit 180 and the second power supply unit 130 is combined and supplied to the motor 14.

Abstract: An electric motor system (100), comprising: a motor unit (110) comprising: a first part (120); a second part (130) movable relative to the first part (120); a plurality of spaced activatable motor elements (140) provided on the first part (120), each activatable motor element (140) being operative when activated by application of an electric current thereto for creating relative movement between the first and second parts (120, 130); and a plurality of power electronics drive modules (150), each power electronics drive module (150) being operatively associated with a different subset of the plurality of activatable motor elements (140) and comprising a power converter (155) operative to convert direct current into a periodic current for powering the activatable motor elements (140); and a power supply arrangement (170) comprising: at least one direct current power source (180); and a plurality of n parallel direct current power supply lines (190), each of the parallel direct current power supply lines (190) b

Abstract: A switching device for switching an electric motor includes a control unit configured to provide a first switching signal for the electric motor, a memory configured to store at least one end position, and a position sensor configured to provide the control unit with an electrical position signal which indicates a measured position. The control unit is connected communicatively to wireless communication means and is configured to store the measured position in the memory as said at least one end position on the basis of the position signal in response to a received first instruction. The control unit is configured to provide the first switching signal by comparing the stored end position and a position signal measured by the position sensor. A drive with such a switching device and a method for setting up such a switching device.

Abstract: A multi-phase permanent magnet rotor motor comprises a plurality of phase coil windings with each phase coil winding having two free ends and the plurality of phase coil windings being without a common node. A controller is provided comprising a plurality of full-bridge inverters. Each full-bridge inverter has two output ends electrically connected to the two free ends of a corresponding phase coil winding. The controller is configured to operate the plurality of full-bridge inverters to output pulse modulated control signals to their respective phase coil windings. The outputted pulse modulated control signals can comprise a combination of sine wave signals and full-bridge space vector modulation signals.

Abstract: A motor drive system includes a MUX circuit, a DC voltage scaling circuit, a fault detection circuit, an ADC, and an FPGA. The MUX circuit selectively establishes a MUX input signal path and a MUX output signal path. The DC voltage scaling circuit measures a DC link voltage. The fault detection circuit receives the output DC link voltage and outputs one of a normal operation signal or a fault signal in response to comparing the DC link voltage to one or both of a U/V reference voltage and an O/V reference voltage. The ADC converts one or more input analog voltages into respective corresponding output digital voltages. The FPGA is in signal communication with the ADC output (ADCOUT) and the MUX circuit, and is configured to control the motor drive system based on a comparison between one or more of the output digital voltages.

Abstract: A heater-integrated fuse is provided at a neutral point of a stator coil, and when a short-circuit failure of an inverter is detected, a fuse part of the heater-integrated fuse is cut by heating.

Abstract: A power tool includes a three-phase DC motor, a power switching network, a power source, and an electronic processor. A first phase of the motor is connected between a first low side electronic switch and a power source electronic switch, and connected to the power source via a first high side electronic switch in parallel with a diode. The electronic processor is configured to receive an indication to stop the motor during operation of the motor and activate the first low side electronic switch and a second low side electronic switch for a first predetermined time responsive to receiving the indication such that a back-electromagnetic force generated by the motor is stored in the first phase. The electronic processor is configured to deactivate the second low side electronic switch after the first predetermined time such that a first regenerative current is provided to the power source via the diode.

Abstract: The invention relates to a rotary machine comprising a stator and a rotatably mounted rotor, with one or more magnetic field sensors arranged stationary relative to the stator at a radial distance from a stationary axis, at least one measuring device which configured to detect magnetic field changes with the aid of the aforementioned magnetic field sensors, a rotor which is configured to generate one or more electrical signals in each case, said signals having signal components which correspond to the rotor rotation frequency and to the distance between magnetic field sensor and rotor in each case, wherein a demodulator unit carries out a demodulation of signals generated by or derived from the magnetic field sensors, such that a signal is generated which corresponds to the distance between the rotor and the magnetic field sensor.

Abstract: The system and method described herein provide grid-forming control of a power generating asset having a double-fed generator connected to a power grid. Accordingly, a stator-frequency error is determined for the generator. The components of the stator frequency error are identified as a torsional component corresponding to a drivetrain torsional vibration frequency and a stator component. Based on the stator component, a power output requirement for the generator is determined. This power output requirement is combined with the damping power command to develop a consolidated power requirement for the generator. Based on the consolidated power requirement, at least one control command for the generator is determined and an operating state of the generator is altered.

Abstract: A medium voltage inrush current (MVIC) regulator and interconnection control system for interposing between a distributed power generation facility and a utility grid. The facility has a designated generator step-up (GSU) transformer and is connected to the utility grid at a point of interconnect. The system includes a pre-insertion impedance injection transformer, a low voltage first switch connected between the pre-insertion transformer and secondary coils of the designated GSU transformer, a medium voltage second switch connected inline between the pre-insertion transformer and primary coils of the designated GSU transformer, and a controller. In response to restoration of the utility grid following a loss-of-grid event, the controller opens and closes the first and second switches according to an automated pre-energization switching sequence such that magnetic flux in the designated GSU transformer occurs at a reduced rate, thereby reducing inrush of current and undesirable power quality phenomena.

Abstract: A mobile generator includes a housing having a top portion, a first side portion, and a second side portion, wherein the first side portion includes an energy-receiving component. The mobile generator also includes an arm pivotally coupled to the housing at a first pivot point and to the first side portion at a second pivot point. A first motion controller is configured to drive rotation of the arm about the first pivot point, and a second motion controller configured to drive rotation of the first side portion about the second pivot point.

Abstract: Solar array (1) comprising solar modules (3) distributed in rows (10), each solar module comprising solar collector (5) carried by a single-axis solar tracker (4), a reference solar power plant (2) comprising a central reference solar module and at least one secondary reference solar module, and a piloting unit (7) adapted for: piloting the angular orientation of the central reference module according to a central reference orientation setpoint corresponding to an initial orientation setpoint, piloting the orientation of each secondary reference module according to a secondary reference orientation setpoint corresponding to the initial orientation setpoint shifted by a predefined offset angle; receiving an energy production value from each reference module; piloting the orientation of the modules, except for the reference modules, by applying the reference orientation setpoint associated to the reference module having the highest production value.

Abstract: An oscillator includes a resonator, sustaining circuit and detector circuit. The sustaining circuit receives a sense signal indicative of mechanically resonant motion of the resonator generates an amplified output signal in response. The detector circuit asserts, at a predetermined phase of the amplified output signal, one or more control signals that enable an offset-reducing operation with respect to the sustaining amplifier circuit.