Class / Patent application number | Description | Number of patent applications / Date published |
307032000 | Load current proportioning or dividing | 34 |
20080211305 | Circuit structure for driving a plurality of cold cathode fluorescent lamps - A DC/AC converter circuit structure for driving a plurality of cold cathode fluorescent lamps is described. A common-mode choke is used between the cold cathode fluorescent lamps. The common-mode choke balances the currents respectively flowing through the cold cathode fluorescent lamps. | 09-04-2008 |
20080238197 | MULTI-MODULE CURRENT SHARING SCHEME - A circuit provides multi-module current sharing for circuit modules. The circuit includes an error amplifier having a negative and a positive input and an output. The positive input of the error amplifier is connected to a reference voltage. A buffered differential amplifier has an output connected to the negative input of the error amplifier and a positive and a negative input. A correction current is sourced to the negative input of the buffered differential amplifier. A resistor connected to the negative input of the buffered differential amplifier has a value that controls the amount of current correction applied to the negative input of the buffer differential amplifier by the current correction source. | 10-02-2008 |
20080278001 | High voltage current splitter circuit and method - A circuit arrangement and associated method for splitting current in a predetermined ratio between N sub-circuits, comprising means for splitting current at one end of a each sub-circuit and at least one device at the other end of each sub-circuit adapted to become forward biased and acts as a short to ground. | 11-13-2008 |
20080296972 | Current Balancing Module - For having magnitudes of all currents for supplying for all passive elements in a same product be equal, a current balancing module, which has balancing transformers as more as approximately half an amount of all the passive elements, is provided for meeting such requirements. The provided current balancing module is for solving defects caused by complicated designs and increased volumes caused by an increased number of balancing transformers. Each current path in the current balancing module flows through two mutual-corresponding passive elements and at least one balancing transformer. All the current paths have a same magnitude in current with the aid of a pair of sinusoidal waves having same magnitudes and opposite poles, and the aid of all the balancing transformers having a same number of turns. | 12-04-2008 |
20090026839 | Wearable/portable power and communications device - An electric connect/disconnect device ( | 01-29-2009 |
20090115251 | Charging Device, Electric-Powered Vehicle, and Charging System - When charging of a power storage device from a commercial power supply is controlled, charging and cooling of the power storage device are performed in a timesharing manner. Specifically, when a temperature of the power storage device rises, a control device turns off a system main relay and stops a boost converter, and drives an inverter to operate a compressor (MC) for an air conditioner. When the power storage device is cooled down, the control device turns on the system main relay again and drives the boost converter, and stops the inverter. | 05-07-2009 |
20090167085 | Voltage Detection System for a Range - An appliance is provided with an improved power management system for controlling the total amount of current provided to at least a first load device of the appliance. The power management system is comprised of a microprocessor, an alternating current voltage source, a voltage regulating circuit, a clamping circuit, at least one load device, and a MOC and a triac for each of the at least two load devices. The clamping circuit outputs a fixed voltage of 5.7 volts during the positive portion of the ac cycle and a fixed voltage of −0.7 volts during the negative portion of the ac cycle. The fixed voltages are input to a microprocessor which utilizes these inputs to control the average voltage and the amount of time the current is turned on to each of the at least first and second load devices. A current sensing circuit is used to monitor the current to one of the at least two load devices to provide feedback to the microprocessor so that the microprocessor can adjust the average voltage and current to the at least two load devices so that the total current consumed does not exceed a pre-determined level. | 07-02-2009 |
20090230769 | METHOD OF BALANCING POWER CONSUMPTION BETWEEN LOADS - There is provided a method of balancing power consumption between a first load and at least one second load, wherein the first load and the at least one second load are connected to a power supply, and wherein the method comprises the step of determining deviations in an actual output voltage with respect to a desired voltage of the power supply, wherein the deviations are due to a change of the magnitude of any of the at least one second load. The method further comprises the step of regulating the first load until the actual output voltage corresponds to the desired voltage for a compensation of the change of the magnitude. The first load is preferably due to a processor. The first load of the processor is thus adjusted in order to compensate for the change of the second load. Preferably, the processor load is adapted by an adaptation of the processor's clock frequency. The method in accordance with the invention is particularly advantageous as the processor itself is a consumer of the apparatus and hence no energy is wasted for load compensation as no extra component is required that is only used for load compensation. | 09-17-2009 |
20100013306 | Intelligent Management of Current Sharing Group - A distributed power management system may include a communication bus and a plurality of POL (point-of-load) regulators coupled to the communication bus and configured in a current sharing arrangement in which each POL regulator of the plurality of POL regulators has a respective output stage coupled to a common load and configured to generate a respective output current. Each POL regulator may have a respective phase in the current sharing configuration, and may transmit and receive information over the bus according to a bus communication protocol corresponding to the bus. The plurality of POL regulators may autonomously arbitrate a new master assignment, when a POL regulator operating as a master device drops out of regulation when a fault occurs, the respective phase of the master device is dropped, and/or the communication interface of the master device to the communication bus fails. The plurality of POL regulators may autonomously add and drop phases while automatically redistributing phase alignments of the POL regulators relative to one another. | 01-21-2010 |
20100045110 | POWER CONVERTERS AND ASSOCIATED METHODS OF CONTROL - SIMO power converters and associated methods of control are disclosed herein. In one embodiment, a method of converting a signal input signal into multiple output signals includes supplying power to a plurality of output terminals based on a signal input signal, detecting a voltage at individual output terminals, determining an arithmetic relationship between the detected voltages of the output terminals, and adjusting the power supplied to the plurality of output terminals based at least in part on the determined arithmetic relationship between the detected voltages of the output terminals. | 02-25-2010 |
20100084918 | POWER SYSTEM - The present invention provides methods and apparatus for reducing power consumption. One method includes detecting the presence of an object, identifying whether the object is a valid device and restricting power if its not a valid device. Another method includes temporarily applying a low amount of power to the primary unit to detect a load, supplying more power to determine if its a valid secondary device, and restricting power if its not. An apparatus for reducing power consumption includes two power inputs, where the lower power input powers a sense circuit. A switch selectively decouples the higher power input from the primary subcircuit during detection mode and couples the higher power input to the primary subcircuit during power supply mode. | 04-08-2010 |
20100096924 | System and Method for Powering an Information Handling System in Multiple Power States - Power is supplied to an information handling system chipset with a single voltage regulator having dual phases. A first phase of the voltage regulator provides power to a low power state power rail in an independent mode to support a low power state, such as a suspend or hibernate state. A second phase of the voltage regulator provides power to a run power state power rail in combination with the first phase by activation of a switch, such as a MOSFET load switch, that connects the low power state power rail and the run power state power rail. Voltage sensed from both power rails is applied to control voltage output so that the run power state power rail is maintained within more precise constraints than the low power state power rail. | 04-22-2010 |
20100127568 | APPARATUS AND METHOD FOR PROVIDING A POWER SWITCH ARRAY WITH ADJUSTABLE CURRENT RATING POWER SWITCHES - An apparatus and method are disclosed for providing a power switch array with adjustable current rating power switches. A plurality of current rating power switches is provided that connects a power supply unit to a plurality of device ports. A power switch array controller is provided that adjusts an adjustable current rating in each of the plurality of adjustable current rating power switches. Each of the plurality of adjustable current rating power switches is adjustable to a selected number of current values. The power switch array controller dynamically adjusts the current ratings in the adjustable current power switches as required by the current requirements of the device ports. | 05-27-2010 |
20100141031 | Load driving method and device - A load driving device controls two motors by PWM signals. When a standard duty ratio of the PWM signals is 50% and a level of a drive instruction is the standard duty ratio, the standard duty ratio are output to the respective motors to provide a reverse phase relationship that the PWM signal of the standard duty ratio does not overlap. A continuous off-period and the standard PWM signal output when the level of the drive instruction is lower than the standard, and the continuous on-period and the standard PWM signal output when the level of the drive instruction is higher than the standard are changed over at the ratios corresponding to the level of the drive instruction. | 06-10-2010 |
20100194199 | CURRENT BALANCING APPARATUS, CURRENT BALANCING METHOD, AND POWER SUPPLY APPARATUS - A current balancing apparatus includes a first transformer having a first primary winding and a first secondary winding electromagnetically coupled with the first primary winding, the first primary winding having a first end connected to a first load that passes a first current; a second transformer having a second primary winding and a second secondary winding electromagnetically coupled with the second primary winding, the second primary winding having a first end connected to a second load that passes a second current having an AC component substantially having a 180-degree phase difference with respect to the first current; and a series circuit including the first secondary winding, the second secondary winding, and a current smoother, to balance the first current and second current with each other. | 08-05-2010 |
20110031806 | Load Control System Having An Energy Savings Mode - A load control system for a building having a lighting load, a window, and a heating and cooling system comprises a lighting control device for controlling the amount of power delivered to the lighting load, a daylight control device, such as a motorized window treatment, for adjusting the amount of natural light to be admitted through a window, and a temperature control device for controlling a setpoint temperature of the heating and cooling system to thus control a present temperature in the building. The load control system may also comprise a controllable electrical receptacle for turning on and off a plug-in electrical load connected thereto. The lighting control device, the daylight control device, the temperature control device, and the controllable receptacle are controlled so as to decrease a total power consumption of the load control system in response to a received demand response command. | 02-10-2011 |
20110068626 | MULTIPORT POWER CONVERTER WITH LOAD DETECTION CAPABILITIES - Power converters are provided that convert alternating current (AC) power to direct current (DC) power. A power converter may have multiple ports. Each port may have an associated connector with multiple power and data terminals. When an electronic device is connected to a given port, the electronic device draws DC power from the power converter. To ensure that the capacity of the power converter is not exceeded when multiple devices are connected to the ports of the power converter, the power converter may actively monitor its ports for active loads. Load detection circuitry can determine what number of ports are active. Control circuitry can compute a per-port available DC power level based on the number of active ports and can provide this information to connected devices. | 03-24-2011 |
20110169333 | METHODS AND SYSTEMS FOR DISTRIBUTING LOAD TRANSFERS IN POWER SUPPLY SYSTEMS - A power supply system includes an AC power line with an uninterruptible power supply (UPS) device coupled to receive power from the AC power line. The UPS includes control circuitry that couples power conversion circuitry of the UPS to the AC power line when the available AC power is acceptable. The power supply system also includes a second UPS device coupled to receive power from the AC power line. The second UPS includes a timer delay, such that the control circuitry is configured to couple power conversion circuitry to the AC power line when the available AC power is acceptable, and upon expiration of the timer. | 07-14-2011 |
20110198925 | Current regulator drive circuit shunting current by voltage-dividing load - The present invention is through the power control unit, which is connected with the voltage-dividing load in parallel, to perform shunt regulation for the current passing through the voltage-dividing load; in which the methods of the shunt regulation by the power control unit includes using the power control unit to perform shunt regulation of PWM, shunt regulation of conductive phase angle, or shunt regulation of switch type turn-on or cut-off, or regulating the impedance of the power control unit. | 08-18-2011 |
20110234002 | POWER SHARING WITH STACKABLE SWITCHES - A technique includes selecting a first device from a plurality of interconnected devices to form a root of a power tree connecting the interconnected devices and allocating power among neighbors of the interconnected devices in a direction along the tree away from the root. The technique includes determining whether at least one of the interconnected devices needs power after the allocation of power among the neighbors and selectively further allocating power among the neighbors in a direction along the tree toward the root based on the determination. | 09-29-2011 |
20110298282 | METHOD AND ARRANGEMENT FOR BALANCING VOLTAGES OF SERIES CONNECTION OF STORAGE UNITS FOR ELECTRICAL ENERGY - An arrangement which includes two or more energy storage units for electrical energy connected in series, and two or more balancing resistor units. Each balancing resistor unit is connected in parallel with one of the energy storage units. The arrangement also includes means for determining a voltage over all of the series-connected energy storage units and means for determining the energy storage unit voltages between poles of the energy storage units. One or more of the balancing resistor units include a base resistor unit and a control resistor unit connected in series and a switching device connected in parallel with the control resistor units. The arrangement further comprises means for determining reference voltages for the energy storage units based on the voltage over all of the series-connected capacitors and means for controlling the switching device to control the resistance of one or more of the balancing resistor units so that the energy storage unit voltage of each energy storage unit is maintained within a set range of the reference voltage for each energy storage unit. | 12-08-2011 |
20120043812 | Power Managers for an Integrated Circuit - A system for an integrated circuit comprising a plurality of power islands includes a first power manager and a second power manager. The first power manager manages a first power consumption for the integrated circuit based on needs and operation of the integrated circuit. The second power manager communicates with the first power manager and manages a second power consumption for one of the power islands. | 02-23-2012 |
20120187762 | MULTI-CHANNEL PULSE WIDTH MODULATION SIGNAL GENERATING APPARATUS AND METHOD, AND LIGHT-EMITTING DIODE SYSTEM INCLUDING THE SAME - A multi-channel PWM signal generating method includes receiving information having a pulse width and outputting a plurality of PWM signals based on the pulse width. The outputting includes outputting at least one pair of PWM signals that have a phase difference corresponding to a difference between an output period and the pulse width. | 07-26-2012 |
20120217802 | SYSTEM AND METHOD FOR POWER SHARING OF FRONT-END CONVERTERS WITHOUT COMMUNICATION LINK IN A MODULAR-STACKED DC TRANSMISSION SYSTEM - A sub-sea power transmission/distribution network includes a plurality of standard proven power converter building blocks on each of the power source side and the sub-sea load side. The power source side converters and the sub-sea load side converters are each configured to provide a modular stacked dc (MSDC) converter architecture. The power source side converters are further configured to share the load equally or in proportion to their individual power ratings. The configurations are based on corresponding droop curves representative of MSDC link current magnitude data and average output voltage data of the power source side converters. | 08-30-2012 |
20120256485 | Power Managers for an Integrated Circuit - A system for an integrated circuit comprising a plurality of power islands includes a first power manager and a second power manager. The first power manager manages a first power consumption for the integrated circuit based on needs and operation of the integrated circuit. The second power manager communicates with the first power manager and manages a second power consumption for one of the power islands. | 10-11-2012 |
20120274136 | MULTI-PATH CONSTANT CURRENT DRIVING CIRCUIT - A multi-path constant current driving circuit. In the multi-path constant current driving circuit, a current sharing transformer (T | 11-01-2012 |
20120280566 | Levelling Partial Powers Flowing via the Individual Phases of a Multi-Phase AC Grid - For levelling the partial powers which flow at a grid connection point between a multi-phase AC power grid having a plurality of phase conductors and a unit for feeding electric energy into the AC power grid having a multi-phase inverter as well as electric consumer loads connected to the AC power grid, via the individual phase conductors, differences between the partial powers flowing via the individual phase conductors are determined and are reduced by feeding different partial powers with the inverter into the individual phase conductors. | 11-08-2012 |
20130020871 | APPLIANCE CONTROL SYSTEM - The appliance control system includes electrical appliances and an appliance control device. The appliance control device includes a control unit configured to, upon receiving an energy conservation instruction indicative of a total reduction amount, send a control signal including common control order indicative of an individual reduction amount of the power consumption of the electrical appliance to at least one of the electrical appliances based on the total reduction amount. Each electrical appliance includes a functional unit having plural operation states with different power consumption, a control instruction storage unit storing plural control instructions for changing the operation state, an individual storage unit storing individual control information indicative of a correspondence relation between the individual reduction amount and the control instruction, and an operation control unit. Upon receiving the control signal, the operation control unit selects the control instruction associated with the individual reduction amount indicated by the common control order included in the received control signal with reference to the individual control information, and provides the selected control instruction to the functional unit. The functional unit performs an energy conservation control process of changing the operation state in accordance with the received control instruction. | 01-24-2013 |
20140203642 | Multiple Outlet Sequenced Power Strip - A multiple outlet sequenced power strip with only a specific number of outlets capable of running at any one time which is comprised of at least: a housing, input and output outlets, and a form of variable motor; thus allowing for the possible use of multiple high power devices on one wall socket and subsequently breaker. | 07-24-2014 |
20150061390 | Power Supply - A power supply, comprising a constant-current power supply, and at least two current-limiting protection branches (I1, . . . , In) connected in parallel on the output loop of the constant-current power supply, the current limiting protection branches comprising at least one load (L1, . . . , Lnn) and current-limiting protector (l0, . . . , ln), and the designed current limiting value of the current-limiting protector in each branch being greater than the designed working current value of the current-limiting protection branch where the current-limiting protector is located. When the current of any one of the current-limiting protection branches is equal to or less than the designed working current of the branch, the current-limiting protector in the branch works in a saturated ON-state; and when the current of any one of the current-limiting protection branches is greater than the designed working current of the branch and reaches the designed current limiting value of the current-limiting protector in the branch, the current-limiting protector in the branch works in a current limiting state. The power supply can effectively control the short-circuit fault in a load, and when no short-circuit fault occurs in a load, a current-limiting protector works in a low power consumption state, which is favorable for power saving and environmental protection. | 03-05-2015 |
20150097433 | POWER TRANSMITTING APPARATUS, CONTROL METHOD OF THE SAME AND STORAGE MEDIUM - A power transmitting apparatus which can be driven by a battery and transmits power to one or more power receiving apparatuses acquires, from each of one or more power receiving apparatuses, information for identifying the power receiving apparatus, and decides the amount of transmission power for each of one or more power receiving apparatuses based on the remaining capacity of the battery and the sum of the allowable amounts of transmission power determined for each of one or more power receiving apparatuses based on the information. The power transmitting apparatus transmits power to one or more power receiving apparatuses in accordance with the decided power amount. | 04-09-2015 |
20150102673 | POWER BALANCING IN POWER DISTRIBUTION NETWORKS - Systems and methods for power balancing in power distribution networks are disclosed herein. According to an aspect, a method may be implemented at a power manager in a power distribution network including multiple computing devices. The method may include receiving vital product data associated with the computing devices. The method may also include predicting, based on the vital product data, occurrences of unbalanced power in the power distribution system upon distribution of power to the computing devices. Further, the method may include controlling application of power to the computing devices, prior to distributing power in the power distribution system, based on the predicted occurrences such that power distribution to the power distribution system is substantially balanced. | 04-16-2015 |
20150311705 | MULTIPORT POWER CONVERTER WITH LOAD DETECTION CAPABILITIES - Power converters are provided that convert alternating current (AC) power to direct current (DC) power. A power converter may have multiple ports. Each port may have an associated connector with multiple power and data terminals. When an electronic device is connected to a given port, the electronic device draws DC power from the power converter. To ensure that the capacity of the power converter is not exceeded when multiple devices are connected to the ports of the power converter, the power converter may actively monitor its ports for active loads. Load detection circuitry can determine what number of ports are active. Control circuitry can compute a per-port available DC power level based on the number of active ports and can provide this information to connected devices. | 10-29-2015 |
20150381067 | MULTIPLE OUTPUT CONVERTER AND METHOD FOR CONTROLLING THE SAME - A multiple output converter is provided. The multiple output converter includes a power conversion circuit and a switching control unit. The power conversion circuit includes an input unit having at least one first switch, a transformer unit configured to convert a magnitude of power from the input unit, an output unit having a plurality of output terminals, which are configured to receive the power from the transformer unit, and a second switch unit having a plurality of second switches, wherein each of the plurality of second switches is installed in each of the plurality of output terminals, respectively, and is controlled in a time division multiple control manner. The switching control is configured to transmit a pulse width modulation signal to the at least one first switch and the plurality of second switches for controlling the at least one first switch and the plurality of second switches in the time division multiple control manner. | 12-31-2015 |