| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 323212000 | FOR PHASE SHIFT OR CONTROL | 32 |
| 20100039078 | LOAD FLUCTUATION CORRECTION CIRCUIT, ELECTRONIC DEVICE, TESTING DEVICE, AND LOAD FLUCTUATION CORRECTION METHOD - Provided is a load fluctuation compensation circuit for compensating a power source voltage supplied to an operation circuit, the load fluctuation compensation circuit including: a periodic signal changing section that receives a power source voltage from a power source shared with the operation circuit, and outputs a changed signal resulting from changing a supplied periodic signal according to the power source voltage; a phase comparator that compares a phase of the periodic signal with a phase of the changed signal outputted from the periodic signal changing section; an initializing section that generates a bias voltage supplied to the periodic signal changing section and adjusts a phase difference between the periodic signal and the changed signal to a preset value, based on the comparison result of the phase comparator; a controller that holds the bias voltage outputted from the initializing section when the phase difference between the periodic signal and the changed signal has become the preset value; a power current consumption circuit that shares a power source with the operation circuit; and a fluctuation compensation section that controls an amount of a power current supplied to the power current consumption circuit, based on the comparison result outputted from the phase comparator while the bias voltage of the initializing section is kept on hold. | 02-18-2010 |
| 20100219799 | Toroidal Core Current Transformer with Phase Compensation Circuit - Disclosed is a toroidal core current transformer comprising a primary conductor which penetrates the toroidal core and a secondary winding that is wound around the toroidal core. A measuring shunt (R | 09-02-2010 |
| 20100283436 | METHOD AND APPARATUS FOR SUPPRESSING NOISE CAUSED BY PARASITIC CAPACITANCE AND/OR RESISTANCE IN AN ELECTRONIC CIRCUIT OR SYSTEM - Reducing, suppressing or canceling parallel parasitic capacitance and/or resistive effects that affect the frequency response of components, elements and/or circuits in an electronic circuit or system that exhibit inductance is disclosed. Noise generated by parallel parasitic capacitance and/or parasitic resistance of the components, the physical orientation of the components, and/or the layout of components, devices and/or conductive tracks (board traces) on printed circuit boards within an electronic circuit or system is reduced, suppressed or canceled. The reduction, suppression or cancelation is achieved by adding a current source in parallel with a part or component of the electronic circuit or system that exhibits inductance, the current source being adapted to deliver a compensating current of roughly equal magnitude and roughly opposite phase to parasitic current associated with the part or component. | 11-11-2010 |
| 20100283437 | METHOD AND APPARATUS FOR SUPPRESSING NOISE CAUSED BY PARASITIC INDUCTANCE AND/OR RESISTANCE IN AN ELECTRONIC CIRCUIT OR SYSTEM - Reducing, suppressing or canceling series parasitic inductance and/or resistive effects that affect the frequency response of components, elements and/or circuits in an electronic circuit or system that exhibit capacitance is disclosed. Noise generated by series parasitic inductance and/or parasitic resistance of the components, the physical orientation of the components, and/or the layout of components, devices and/or conductive tracks (board traces) on printed circuit boards within an electronic circuit or system is reduced, suppressed or canceled. The reduction, suppression or cancellation is achieved by adding a voltage source in series with a part or component of the electronic circuit or system that exhibits capacitance, the current source being adapted to deliver a compensating voltage of roughly equal magnitude and roughly opposite phase to parasitic voltage associated with the part or component. | 11-11-2010 |
| 20110133704 | METHOD FOR CONTROLLING AN INTERLEAVING MULTIPHASE REGULATOR AND CORRESPONDING SYSTEM - A method is provided for controlling turn-on of phases of a multiphase regulator. According to the method, there are tested the conditions necessary for the turn-on of a phase to be turned-on indicated by a first cell of the phase register, and in response to a positive result a corresponding ramp signal is reset. There is then tested the conditions necessary for the turn-on of a phase successive to the phase to be turned on according to the list of priorities of the phase register, and corresponding ramp signals are reset if there is a positive result. In response to no positive results of testing conditions necessary for the turn-on of all phases successive to the phase to be turned on, there is reset a ramp signal corresponding to a phase successive to a last turned on phase indicated by a last cell of the phase register. | 06-09-2011 |
| 20110169462 | Converter Device and Method for Converting Electrical Power - A converter device for power conversion in e.g. a power plant such as a wind turbine is disclosed. The converter device is configured for converting an input power to an electrical output power. The converter device may be configured for receiving mechanical input power or, according to another embodiment, may be configured for receiving electrical input power. The converter device includes a controller which is configured for setting a phase angle between a voltage and a total current of the electrical output power to a predetermined value if the voltage indicated by the voltage signal is outside a predetermined voltage band. | 07-14-2011 |
| 20120194144 | BALANCING THREE PHASE POWER SYSTEMS BY SMOOTH PAHSE SHIFTING AND CLUSTERING - A method of maintaining balance in power systems is provided herein. The method comprises of detecting a need for load switch from a source phase to a target phase; then applying a Direct Current (DC) conversion to the target phase, to yield a DC representation of the target phase; then synthesizing the DC representation of the target phase to yield synthesized source phase; then, conveying specified amount of load from the source phase to the synthesized source phase; then, repeatedly advancing, in each cycle, the phase of the synthesized source phase until it breaches the phase of target phase. The advancing is carried out in a rate of up to a standard error deviation that complies with electricity standard and conveying a load from the synthesized source phase to the target phase. | 08-02-2012 |
| 20120299560 | Balancing Temperatures in A Multi-Phase DC/DC Converter - In one embodiment, a temperature compensation circuit is used in a peak current control multi-phased DC/DC converter. Each phase has a duty cycle needed to generate a regulated output voltage of the converter. The temperature for each phase in the converter is sensed to generate corresponding first signals for all the phases. The first signals are averaged to generate a second signal corresponding to the average temperature of all the phases. For each phase, a third signal is generated corresponding to the difference between the first signal and the second signal. The third signal is then used to adjust the duty cycle of each phase to control the temperature of each phase to be substantially equal to the average temperature. In the steady state, the output voltage of the converter will be the desired voltage and the temperatures of the phases will be balanced. | 11-29-2012 |
| 323213000 | By splitting and combining | 1 |
| 20080252270 | PHASE CONTROL METHOD AND PHASE CONTROL DEVICE - A selectable operation amount is set as a threshold value according to an input operation amount, where if a determination value obtained by adding the input operation amount and an integrated operation amount or an output error accumulated value is greater than or equal to the threshold value, the threshold value is selected as the output operation amount, and if the determination value is not greater than or equal to the threshold value, a selectable output operation amount close to the threshold value is selected, and the ON/OFF control is performed with the selected output operation amount, while the selected output operation amount is subtracted from the determination value to correct the integrated operation amount, so that the input operation can be substantially output even if it takes an operation amount other than the selectable operation amount values. | 10-16-2008 |
| 323214000 | Using saturable inductor | 2 |
| 20080290845 | Charge-transfer apparatus and method - An electronic device for transferring charge includes: a charge storage device; an inductive section; and a switching array having a first set of switches connected to a first node of a power terminal, a second set of switches connected to a second node, and a third set of switches connected to a third node. The device includes a controller configured to control the switching array so as to cause a first predetermined charge to interchange between the first node and the charge storage device, a second predetermined charge to interchange between the second node and the charge storage device, and a third predetermined charge to interchange between the third node and the charge storage device; and a bypass switch configured to close a circuit between the charge storage device and the inductive section so as to prevent charge from interchanging between the charge storage device and the nodes. | 11-27-2008 |
| 20090045785 | SENSING A PHASE-PATH CURRENT IN A MULTIPHASE POWER SUPPLY SUCH AS A COUPLED-INDUCTOR POWER SUPPLY - An embodiment of a power supply includes a supply output node, phase paths, and sensor circuits. The supply output node is operable to carry a regulated output voltage, and each phase path has a respective phase-path non-output node, has a respective phase-path output node coupled to the supply output node, and is operable to carry a respective phase current. And each sensor circuit has a respective sensor node coupled to the phase-path non-output nodes and is operable to generate a respective sense signal that represents the phase current flowing through a respective one of the phase paths. For example, where the phase paths are magnetically coupled to one another, the sensor circuits take into account the portions of the phase currents induced by the magnetic couplings to generate sense signals that more accurately represent the phase currents as compared to conventional sensor circuits. | 02-19-2009 |
| 323215000 | Using transformer | 7 |
| 20080231241 | Transformers - A multi-transformer unit is operative for converting an input AC voltage at a first voltage level to a net output AC voltage at a second voltage level. The multi-transformer unit can be used in place of a conventional transformer or an AC machine and is designed to suppress the transfer of harmonics between the input and output AC voltages. The unit comprises at least two phase-shifting transformers, each transformer being operative to provide a phase shift relative to the first voltage level. On the primary side of the unit the transformers are arranged for independent connection to the first voltage level, whereas on the secondary side of the unit the transformers are linked such that voltage vectors on the secondary side of the unit are added together to at least partially cancel the harmonic pollution and give the net output AC voltage. Moreover, the phase shift of the phase-shifting transformers may be selected to completely or substantially add into the net AC output voltage of the multi-transformer unit the fundamental voltage/frequency applied to its input AC voltage. | 09-25-2008 |
| 20090134850 | CONTROL OF POWER FLOW IN A TRANSMISSION LINE - A method for controlling the power flow in an ac transmission line including prompt handling of voltage recovery and only thereafter thermal constraints. | 05-28-2009 |
| 20100264886 | DEVICE FOR VOLTAGE MULTI-INJECTION ON MULTIPLE CONDUCTORS - Which permits the application of methods for increasing the performance of a communications system on a medium made up of N conductors ( | 10-21-2010 |
| 20130200862 | METHODS AND APPARATUS FOR SUPPLYING THREE PHASE POWER - The present invention provides methods and apparatus for converting a single phase power supply source into a three phase power supply source. The single phase power supply source is utilised as a first output of the three phase power supply source, whilst the second and third outputs of the three phase power supply source are created utilising part of the single phase power supply source combined with a phase shifting inverting circuit. | 08-08-2013 |
| 20160062386 | Stationary Induction Electric Apparatus - A polyphase stationary induction electric apparatus includes an N-phase N-leg main magnetic path (where N is 3 or more); a main winding wound around each main leg; and a control magnetic flux generating unit that generates a control magnetic flux having a magnitude variable in a direction substantially orthogonal to any one of N-phase main magnetic fluxes at an intersection part of N main legs; the control magnetic flux generating unit controlling the magnitude of the control magnetic flux to make N-phase reactance variable. | 03-03-2016 |
| 20180026524 | POWER SUPPLY DEVICE AND CONTROL METHOD | 01-25-2018 |
| 323216000 | With movable structure or winding | 1 |
| 20100231182 | INDUCTION REGULATOR FOR POWER FLOW CONTROL IN AN AC TRANSMISSION NETWORK AND A METHOD OF CONTROLLING SUCH NETWORK - A device for controlling the voltage and the phase angle of a polyphase electric transmission network including an induction regulator that is connected between the primary side and the secondary side of the transmission network. A gap is provided with a magnetic layer having a relative permeability that is controllable, wherein the magnitude (amplitude) of the secondary voltage vector is also adapted to be controlled by controlling the permeability of the magnetic layer. The magnetic layer may include a magnetic fluid or a solid material. | 09-16-2010 |
| 323217000 | Using a three or more terminal semiconductive device | 10 |
| 20090102437 | POWER GENERATING APPARATUS - A power generating apparatus including an AC generator that supplies electric power to a load including a voltage accumulating means, an inverter that applies AC control voltage to armature winding of the generator from the voltage accumulating means, and a controller that controls a phase of control voltage applied to the armature winding by the inverter to keep load voltage at a target value, wherein the phase of the control voltage is controlled so as to advance when the load voltage is higher than the target value, hold the present phase when the load voltage is equal to the target value, advance when the load voltage is lower than the target value and a phase of phase voltage of the generator is delayed behind a phase of a phase current of the same phase, and delay when the load voltage is lower than the target value and the phase of the phase voltage of the generator is advanced ahead of a phase of a phase current of the same phase. | 04-23-2009 |
| 20090278513 | Enhancement mode III-nitride switch with increased efficiency and operating frequency - According to one exemplary embodiment, an efficient and high speed E-mode III-N/Schottky switch includes a silicon transistor coupled with a D-mode III-nitride device, where the silicon transistor causes the D-mode III-nitride device to operate in an enhancement mode. The E-mode III-N/Schottky switch further includes a Schottky diode coupled across the silicon transistor so as to improve efficiency, recovery time, and speed of the E-mode III-N/Schottky switch. An anode of the Schottky diode can be coupled to a source of the silicon transistor and a cathode of the Schottky diode can be coupled to a drain of the silicon transistor. The Schottky diode can be integrated with the silicon transistor. In one embodiment the III-nitride device is a GaN device. | 11-12-2009 |
| 20090302811 | Voltage regulator - Provided is a voltage regulator capable of performing appropriate phase compensation. Even when a difference between an input voltage and an output voltage is small, an appropriate phase compensation voltage based on an output voltage (Vout) is generated in a resistor circuit ( | 12-10-2009 |
| 20120256601 | METHOD FOR OPERATING A CONVERTER CIRCUIT, AND APPARATUS FOR CARRYING OUT THE METHOD - A method and apparatus are provided for operating a converter circuit, which includes n input phase connections and p output phase connections, where n≧2 and p≧2, and (n·p) two-pole switching cells for switching at least one positive and negative voltages between the poles. Power semiconductor switches of the switching cells are driven a drive signal. To reduce undesired circulating currents and adjust the mean voltage deviation of capacitive energy storage of all the switching cells to zero, an inductance is connected into each series connection, with a switching cell together with an inductance in each case forming a phase module. For each phase module, the drive signal is formed from a reference signal based on the voltage across the phase module and from a voltage signal across the inductance. The voltage signal is formed from an intermediate setpoint value of the current through the phase module. | 10-11-2012 |
| 20130314057 | DEVICE AND METHOD FOR LIMITING AN ELECTRICAL CURRENT - The invention relates to a device ( | 11-28-2013 |
| 20140167709 | METHOD FOR CONTROLLING A CYCLOCONVERTER, ELECTRONIC CONTROL DEVICE THEREFOR, CYCLOCONVERTER, AND COMPUTER PROGRAM - A cycloconverter has six converter branches connected in series, and said converter branches have energy stores. A method for controlling the cycloconverter connecting a first three-line network to a second three-line network includes controlling the converter operation by controlling energy transfer from the first three-line network to the second three-line network or vice versa according to energy demand criteria, energy supply criteria, and/or reactive power criteria, and by controlling the amount of electrical energy stored in each converter or by controlling an electrical variable that characterizes the amount of electrical energy to a specified target range. The invention further relates to an electronic control device for such a cycloconverter, and to a computer program for carrying out the method. | 06-19-2014 |
| 20150115906 | MATRIX CONVERTER - A matrix converter includes: a power converter configured to couple an AC power supply and a load together; and a controller configured to selectively execute: a first control mode in which the controller is configured to perform power conversion between the AC power supply and the load; and a second control mode in which the controller is configured to directly combine the AC power supply with the load. The controller is configured to: increase the output voltage and cause a phase of the output voltage follow up a voltage phase of the AC power supply in a case where a difference between a frequency of an output voltage from the power converter to the load and a frequency of the AC power supply becomes within a predetermined range. | 04-30-2015 |
| 20160056707 | NOTCH FILTER FOR RIPPLE REDUCTION - A notch filter is controlled synchronously with a chopper to filter out chopping ripple. In one embodiment, the notch filter is coupled to the differential output of the chopper and includes a sampling capacitor, a hold capacitor, and a second set of switches between the sampling capacitor and the hold capacitor. The second set of switches is temporarily closed once per chopper switching cycle to transfer charge from the sampling capacitor to the hold capacitor such that the ripple from the chopper is not transferred to the hold capacitor. The voltage across the hold capacitor may be coupled to any other circuit, such as to the differential inputs of an amplifier. | 02-25-2016 |
| 20160065046 | METHOD AND CIRCUITS FOR DIMINISHING DC OFFSET - A method and circuit is disclosed for diminishing the DC offset or AC unbalance in an AC load driven by a phase control switch type controller. The method consist of two parts, which may act singly or in concert. The method and circuit of the invention first reduces asymmetry between positive and negative half cycle gating and secondly obtains the amount of DC offset presented to the load, stores that information, and then utilizing the stored information adjusts the function of the controller to diminish the DC offset to a low value by causing causes positive and negative half cycles of the load power to be substantially identical positive and negative half cycles of the load power to be substantially identical. One or more circuits may be provided to reduce the asymmetry of the phase gating circuit, and one or more circuits may be provided to capture the DC offset, allowing correction of the switch output to substantially cancel the unbalance. | 03-03-2016 |
| 20160156264 | DC-DC CONVERTER | 06-02-2016 |
| 323218000 | Using impedance | 4 |
| 20090121690 | Voltage regulator - Provided is a voltage regulator that is excellent in transient response characteristics even if a resistance of a resistor in a phase compensation circuit is large. In the voltage regulator, the resistor of the phase compensation circuit is so configured as to change the resistance thereof according to a voltage across both ends of the resistor. In a transient state in which an output voltage of an error amplifier circuit changes, the resistance of the resistor in the phase compensation circuit is decreased, to thereby improve the transient response characteristics of the voltage regulator. | 05-14-2009 |
| 20100181970 | PHASE SHIFT CONTROL METHOD FOR BOOST CONVERTER AND CIRCUIT IMPLEMENTATION - A phase shift control method for a boost converter and circuit implementation comprises a master phase and at least one slave phase. A master-phase inductor current flowing through the master phase has a master-phase charge time interval and a master-phase discharge time interval; a slave-phase inductor current flowing through the slave phase has a slave-phase charge time interval and a slave-phase discharge time interval. The method comprises: calculating an ideal switching timing whereat the slave-phase inductor current descends to a zero-current judgment value; obtaining a physical switching timing whereat the slave-phase charge time interval starts; calculating a conduction timing error between the physical switching timing and the ideal switching timing; determining the time length of the slave-phase charge time interval in the same cycle according to the conduction timing error and the master-phase charge time interval. | 07-22-2010 |
| 20130154582 | MULTIPHASE CONVERTER COMPRISING MAGNETICALLY COUPLED PHASES - Disclosed is a multiphase converter comprising multiple electric phases ( | 06-20-2013 |
| 20130162225 | MULTIPHASE CONVERTER COMPRISING MAGNETICALLY COUPLED PHASES - Disclosed is a multiphase converter comprising multiple phases ( | 06-27-2013 |
