50th week of 2021 patent applcation highlights part 58 |
Patent application number | Title | Published |
20210391713 | SYSTEM-IN-PACKAGE AND ELECTRONIC MODULE INCLUDING THE SAME - A system-in-package includes a function circuit and a protection circuit that protects the function circuit by preventing an instantaneous transient voltage from being applied to the function circuit. Here, the protection circuit includes a TVS diode and a capacitor. The TVS diode includes an anode that receives a ground voltage and a cathode that is connected to a first external connection terminal. The capacitor includes a first terminal that is connected to a second external connection terminal electrically separated from the first external connection terminal and a second terminal that receives the ground voltage. | 2021-12-16 |
20210391714 | DEVICE AND METHOD FOR ELECTROSTATIC DISCHARGE (ESD) PROTECTION - Embodiments of an electrostatic discharge (ESD) protection device and a method for operating an ESD protection device are described. In one embodiment, an ESD protection device includes a primary ESD protection unit electrically connected to a first node and to a second node and configured to shunt current in response to an ESD pulse received between the first and second nodes and a secondary ESD protection unit electrically connected to the primary ESD protection unit and to the second node and configured to shunt current in response to the ESD pulse to keep an output voltage of the ESD protection device to be within a safe operating voltage range of a device to be protected. Other embodiments are also described. | 2021-12-16 |
20210391715 | POLARITY REVERSAL PROTECTION CIRCUIT - A polarity reversal protection circuit includes a MOSFET and a turn-off circuit, which turns off the MOSFET in the case of a polarity reversal. The turn-off circuit includes a detector for detecting the case in which the voltage at the source terminal of the MOSFET undershoots the voltage at the drain terminal of said MOSFET. Furthermore, it includes a quick-break switch for turning off the MOSFET in the event of detected voltage undershooting, a comparator for comparing the voltages present at source terminal and drain terminal of the MOSFET after detected voltage undershooting, wherein the output of the comparator is connected to the gate terminal of the MOSFET, a boost converter, a buck converter and a charge pump for voltage supply, and a switch for switching off the comparator. | 2021-12-16 |
20210391716 | INTERACTIVE USER CONTROL OF POWER UTILIZATION - Embodiments provide capabilities by which a user provides interactive inputs for allocating use of the available power budget of an IHS (Information Handling System) when a conflict in the power budget is detected. The power demand of the IHS processor(s) is monitored. When a USB device is coupled to the IHS, a power output to the USB device is enabled within the available power budget. Upon detecting an increase in the power demand of the processor, the power budget may be exceeded. The user is then prompted to specify whether to prioritize use of the power budget for performance of the IHS or for charging the USB device. Based on inputs provided by the user, the processor may be throttled or the power output to the USB device may be reduced. The user is thus provided a capability for resolving individual power budget conflicts based on the user's current preferences. | 2021-12-16 |
20210391717 | Modularized Interconnection Device and System Thereof - Embodiments of present disclosure relates to a modular interconnection device (MID) and an electrical network system. The MID comprises a modular port assembly, a node, a converter and a local controller. The modular port assembly is configured to transmit alternating current and/or direct current. The node is coupled to an AC source via a first switch and the modular port assembly. The first switch is configured to selectively disconnect the modular interconnection device from the AC source. The converter is coupled to the node via a second switch and coupled to a DC source via a third switch. The converter is configured to convert the AC current into DC current or convert DC current into AC current. The local controller is coupled to the first, second and third switches and configured to control operation of the first, second and third switches. | 2021-12-16 |
20210391718 | GRID-TIED ELECTRIC METER ADAPTER AND SYSTEMS FOR AUTOMATED POWER RESILIENCE AND ON-DEMAND GRID BALANCING - A micro grid system comprises an adapter, a power controller, and secondary energy source. The adapter is in communication with an electric grid and configured to connect and disconnect a connection between the electric grid and a micro grid. The power controller is in communication with the adapter and configured to receive first AC power from the electric grid via the adapter, obtain grid information, and control the adapter to connect and disconnect the connection between the electric grid and the micro grid. The power controller controls the adapter to disconnect the connection in response to determining that the electric grid is abnormal based on the grid information. The secondary energy source is in communication with the power controller and is configured to generate DC power and to supply the DC power to the power controller. | 2021-12-16 |
20210391719 | HYBRID CASCADED APF TOPOLOGY AND CONTROL METHOD THEREFOR - A hybrid cascaded APF topology and control method therefor for improving the ability of a system to compensate for higher harmonics, raise the quality of electric energy of output currents, and reduce costs. The topology includes: a three-phase cascaded H-bridge including bridge arms of three phases, each bridge arm including a plurality of H-bridge cells connected in series, and the bridge arms of the three phases connected to a power system needing active filtering via inductors; and a three-phase H-bridge circuit connected at star connection points of the three-phase cascaded H-bridge, the three-phase H-bridge circuit including branches of the three phases and two capacitors connected in parallel across the branches of the three phases, and the branch of each phase including two switching transistors connected in series, where switching transistors of the H-bridge cells use Si devices, and the switching transistors of the three-phase H-bridge circuit use SiC devices. | 2021-12-16 |
20210391720 | CONTROL METHOD, LOAD AND POWER GRID SYSTEM - The present disclosure relates to a control method, a load and a power grid system. The method includes: detecting (S | 2021-12-16 |
20210391721 | POWER CONVERSION SYSTEM AND MANAGEMENT APPARATUS FOR THE SAME, AND DISTRIBUTED POWER SUPPLY APPARATUS - A management apparatus periodically transmits information for setting a first voltage range and a second voltage range smaller than the first voltage range to a distribution power supply apparatus. The distribution power supply apparatus removes, from an interconnection point voltage at an interconnection point with the distribution system, a voltage fluctuation component with a cycle shorter than a cycle in which the information is transmitted from the management apparatus to thereby generate a voltage command value of the interconnection point, and performs reactive power control for eliminating a voltage deviation of the interconnection point voltage with respect to the voltage command value. In the reactive power control, the generation of the reactive power is started when an absolute value of the voltage deviation exceeds the first voltage range, and the reactive power is adjusted until the absolute value falls below the second voltage range. | 2021-12-16 |
20210391722 | REACTIVE POWER AND VOLTAGE CONTROL METHOD - A reactive power-voltage control method for integrated transmission and distribution networks is provided. The reactive power-voltage control method includes: establishing a reactive power-voltage control model for a power system consisting of a transmission network and a plurality of distribution networks; performing a second order cone relaxation on a non-convex constraint of the plurality of distribution network constraints to obtain the convex-relaxed reactive power-voltage control model; solving the convex-relaxed reactive power-voltage control model to acquire control variables of the transmission network and control variables of each distribution network; and controlling the transmission network based on the control variables of the transmission network and controlling each distribution network based on the control variables of the distribution network, so as to realize coordinated control of the power system. | 2021-12-16 |
20210391723 | METHOD FOR MONITORING SHORT-TERM VOLTAGE STABILITY OF POWER SYSTEM - The disclosure provides a method for monitoring a short-term voltage stability of a power system. The method includes: obtaining a topology and time series of a current power system; inputting the topology and the time series of the current power system into a trained spatial-temporal graph network model, the trained spatial-temporal graph network model being obtained by classification learning on a spatial-temporal graph network model based on a simulation sample dataset; outputting a status of the short-term voltage stability of the power system; and sending an alarm signal in response to outputting an unstable status of the short-term voltage stability of the power system. | 2021-12-16 |
20210391724 | THREE-PHASE POWER SUPPLY SYSTEM AND POWER SUPPLY METHOD - A three-phase power supply system includes three phase branches forming a delta connection. Each of the phase branches includes at least one power conversion cell of at least two stages. The at least one power conversion cell of each of the phase branches is connected in parallel to the at least one power conversion cell of the respective other two phase branches. When one of the phase branches stops operating, the other two phase branches keep operating, and three phase current of the three-phase power supply system can be balanced by regulating active powers and reactive powers of the other two phase branches. Through the invention, when one of the phase branches stops operating, the other two phase branches may keep operating, and three phase current of the three-phase power supply system are balanced. | 2021-12-16 |
20210391725 | SOLAR PANEL DISCONNECT AND REACTIVATION SYSTEM - A photovoltaic system with an inverter, at least one solar panel for providing electrical power, and electrical wiring for coupling electrical power from the at least one solar panel to the inverter. Also included is a transmitter for transmitting a messaging protocol along the electrical wiring, where the protocol includes a multibit wireline signal. Also included is circuitry for selectively connecting the electrical power from the at least one solar panel along the electrical wiring to the inverter in response to the messaging protocol. | 2021-12-16 |
20210391726 | MULTIPLE PORT DC-DC CONVERTER - A device for DC-DC conversion includes a plurality of input ports to receive a set of DC voltage inputs, at least one DC voltage input being configured as a differential input, a plurality of input semiconductor switches, each input semiconductor switch being coupled to a respective input port of the plurality of input ports, an inductor coupled to each input semiconductor switch, a pair of output semiconductor switches coupled to the inductor, an output coupled to the inductor via the pair of output semiconductor switches, and a processor configured to generate input switch control signals for the plurality of input semiconductor switches to sequentially and selectively connect each DC voltage input to the inductor to charge the inductor and to generate an output switch control signal for the pair of output semiconductor switches to connect the inductor to the output to discharge the inductor via the output. | 2021-12-16 |
20210391727 | ELECTRICAL ARCHITECTURE OF AN AIRCRAFT - An electrical architecture of an aircraft includes a plurality of primary generators each associated with a propulsion engine of the aircraft, a plurality of primary electrical networks each associated with a primary generator in nominal operating mode, a single-part secondary electrical network, an electrical energy accumulation device connected directly to the secondary network, a first electrical energy converter arranged between the secondary electrical network and a first of the primary electrical networks, allowing energy to be transferred from the first of the primary electrical networks to the secondary electrical network, the first electrical energy converter being intended to supply electrical energy to the electrical energy accumulation device in nominal operating mode, a second electrical energy converter arranged between the secondary electrical network and a second of the primary electrical networks, allowing energy to be transferred from the secondary electrical network to the second of the primary electrical networks. | 2021-12-16 |
20210391728 | SINGLE-INTERFACE CHARGING-DISCHARGING SWITCHABLE CIRCUIT - A single-interface charging-discharging switchable circuit comprising a power management unit U | 2021-12-16 |
20210391729 | RECHARGEABLE BATTERY SYSTEMS AND RECHARGEABLE BATTERY SYSTEM OPERATIONAL METHODS - Rechargeable battery systems and rechargeable battery system operational methods are described. According to one aspect, a rechargeable battery system includes a plurality of rechargeable battery cells coupled between a plurality of terminals and charge shuttling circuitry configured to couple with and shuttle electrical energy between individual ones of the rechargeable battery cells, and wherein the charge shuttling circuitry is configured to receive the electrical energy from one of the rechargeable battery cells at a first voltage and to provide the electrical energy to another of the rechargeable battery cells at a second voltage greater than the first voltage. | 2021-12-16 |
20210391730 | Charging Method and Related Device - An electronic device comprises a processor, a charging port, and memory, that stores program code. When the program code is executed by the processor, the electronic device charges a battery of the electronic device using the charging port when a charger is connected to the charging port, stops charging in response to detecting that the charging port is abnormal, and displays a first window on a display interface of the electronic device in response to detecting that the charging port is abnormal. The first window comprises a first prompt information and a second prompt information. The first prompt information is used to prompt that liquid intake exists in the charging port, and the second prompt information is used to prompt a user to exclude a liquid intake situation of the charging port. | 2021-12-16 |
20210391731 | BATTERY MANAGEMENT SYSTEM - The present disclosure relates to a reconfigurable battery system and method of operating the same. The reconfigurable battery system comprising a plurality of switchable battery modules, a battery supervisory circuit, and a battery pack controller, where the plurality of switchable battery modules electrically arranged in series to define a battery string defining an output voltage. The battery pack controller operable to connect the battery string to the external bus via a pre-charge switch to perform a pre-charge cycle. | 2021-12-16 |
20210391732 | DEVICE HAVING A FUNCTION OF SIMULTANEOUSLY CHARGING AND BACKING UP DATA - A device having a function of simultaneously charging and backing up data is provided. The device includes a transmission interface, a power supply circuit, a storage circuit, and a main control circuit. The transmission interface is connected to an electronic device. The power supply circuit is configured to supply power to the electronic device to charge the electronic device. The storage circuit is configured to access data of the electronic device, or to provide data stored in the storage circuit to the electronic device. The main control circuit is connected to the transmission interface, the power supply circuit and the storage circuit. The main control circuit is configured to control the power supply circuit to supply the power to the electronic device and the storage circuit to back up the data simultaneously. | 2021-12-16 |
20210391733 | TOOL-AGNOSTIC DEVICE - Described herein are a system and methods for implementing a tool-agnostic device. In examples, the system may determine location and state information using sensors of the tool-agnostic device. Based on this information, the system may communicate with a virtual reality system for display and user interaction with a virtual reality environment. The tool-agnostic device may be removed and re-attached to a number of different tools. The tool-agnostic device allows tracking of a number of different tools without customization or retrofitting each tool. The tool-agnostic device may serve as a safety-shutoff device in addition to tracking tool use and movement. When the system determines that a tool is operating in an unsafe manner the tool-agnostic device may interrupt the power to the tool. | 2021-12-16 |
20210391734 | VEHICLE BATTERY CHARGING APPARATUS - A battery charging apparatus for device charging in a vehicle includes a charging device compartment, a housing, a blower, a charger, and a duct. The charging device compartment is configured to retain at least one device. The housing includes a top member, a bottom member, and an accommodating space. The housing further includes an air-return port. The blower is in the housing and has an input port and an output port. The charger is in the housing and between the top member of the housing and the blower. The duct has an input port and an output port. The input port of the duct is coupled to the output port of the blower, and the output port of the duct is coupled to the air-return port of the housing. The duct forms a barrier between the accommodating space and the air-return port of the housing. | 2021-12-16 |
20210391735 | Wireless Charger for Watches, Smartphones and Watch Batteries - A charging device includes a base and a platform that extends upward from the base. The base and platform may each be configured with wireless charging surfaces to enable wireless charging of a computing device upon contact. The base includes a recess in front of where the platform extends to provide support to a computing device, such as a smartphone. The base's surface may gradually rise until reaching the recess to provide further support to the smartphone and thereby prevent the smartphone from sliding down. The charging device includes female receptacles to enable charging adapters to connect to the charging device, thereby increasing the number of accessories charged with the charging device. Charging adapters can include a laterally extending platform on which, for example, a smartwatch can rest, or a charging shaft that includes a series of electrical contacts for charging external battery devices. | 2021-12-16 |
20210391736 | CONTROL DEVICE, ENERGY CONVERSION SYSTEM, ENERGY CONVERSION METHOD AND STORAGE MEDIUM - The present disclosure provides a control device, an energy conversion system, an energy conversion method and a storage medium. The control device includes: a detection unit configured to detect a first voltage between a positive electrode of the energy storage device and a first end of an energy conversion device, a second voltage between a negative electrode of the energy storage device and a second end of the energy conversion device, and a third voltage between the positive electrode and the negative electrode of the energy storage device; a processing unit configured to calculate a resistance value corresponding to the energy conversion device according to the first voltage, the second voltage, and the third voltage; when the value of resistance is greater than a resistance threshold value, controlling the energy storage device to supply power to the electrical equipment through the energy conversion device. | 2021-12-16 |
20210391737 | POWER SUPPLY UNIT FOR AEROSOL INHALER AND CONTROL METHOD AND PROGRAM OF POWER SUPPLY UNIT FOR AEROSOL INHALER - A power supply unit for an aerosol inhaler includes: a case; a power supply that discharges power to a load for generating an aerosol from an aerosol generation source; a discharging terminal that connects the load to the power supply; a charging terminal that connects the power supply to an external power supply and is separated from the discharging terminal; a temperature measuring unit that measures temperature of the power supply; and a control device that controls an effective value of a first charging current to a value smaller than an effective value of a second charging current. The first charging current is supplied to the power supply when a measurement value of the temperature measuring unit is equal to or higher than a first threshold and the second charging current is supplied to the power supply when the measurement value is lower than the first threshold. | 2021-12-16 |
20210391738 | APPARATUS, SYSTEMS, AND METHODS FOR DISTRIBUTED CHARGING AND DISCHARGING - An apparatus may include a power rail, a subassembly, an additional subassembly, and an interface coupling the subassembly to the additional subassembly. The subassembly may include a load, an energy-storing component, a charger having an output coupled to the energy-storing component, and a reverse-current limiter having a first terminal coupled to the energy-storing component. The additional subassembly may include an additional energy-storing component, an additional charger having an output coupled to the additional energy-storing component, and an additional reverse-current limiter having a first terminal coupled to the additional energy-storing component. The power rail may cross the interface and may couple the load, an input of the charger, a second terminal of the reverse-current limiter, an input of the additional charger, and a second terminal of the additional reverse-current limiter. Various other apparatuses, systems, and methods are also disclosed. | 2021-12-16 |
20210391739 | Battery Charging Control for Electronic Devices - A method of controlling charging of an electronic device includes estimating a usage time value that corresponds to an anticipated future occurrence of usage of the electronic device; and estimating a resume time value that corresponds to a time for charging to commence to allow for completion of charging from a first predetermined state of charge value to a second predetermined state of charge value by the usage time value. The method also includes charging a battery of the electronic device using electrical power supplied by a charging device until a current state of charge of the battery reaches the first predetermined state of charge value, entering, by the electronic device, a deactivated mode after the current state of charge reaches the first predetermined state of charge value, and causing the electronic device to return to the activated mode according to the resume time value. | 2021-12-16 |
20210391740 | METHODS AND APPARATUS FOR A BATTERY SYSTEM - Various embodiments of the present technology may provide methods and apparatus for a battery system. The apparatus may provide a protection control circuit to detect undesired battery conditions and a fuel gauge circuit to confirm the detected battery condition, record the detected condition, and report the recorded conditions. | 2021-12-16 |
20210391741 | BATTERY CHARGER - The present disclosure is directed to a battery charger for charging a connected battery pack. The battery charger is capable of determining an impedance characteristic value of the battery pack and adjusting a charging scheme, including an initial and/or subsequent charging rates for the battery pack based on the determined impedance characteristic value. The present disclosure is also directed to a method of charging a battery pack. The method includes determining an impedance characteristic value of the battery pack and adjusting a charging scheme, including an initial and/or subsequent charging rates for the battery pack based on the determined impedance characteristic value. | 2021-12-16 |
20210391742 | CHARGING METHOD, ELECTRONIC APPARATUS, AND STORAGE MEDIUM - A method of charging a battery, including: in an m | 2021-12-16 |
20210391743 | BATTERY CHARGER AND METHOD FOR CHARGING A BATTERY - A charger for impulsed charging of a battery includes first and second charging contacts configured to receive a battery to be charged, a DC power input having first and second terminals, and an inductor having first and second ends. The first end is selectively conductively connectable to the first terminal and the second charging contact. The second end is selectively conductively connectable to the first charging contact and the second terminal. A switch is between the second end and the second terminal such that with the switch in a first configuration, the inductor is connected across the DC power input to enable magnetic energization of the inductor, and in a second configuration, the inductor is disconnected from the DC power input and connected across the charging contacts to enable magnetic energy in the inductor to discharge to the battery. The switch is alternated between configurations during charging of the battery. | 2021-12-16 |
20210391744 | METHOD FOR PRECHARGING AN INTEGRATED-CIRCUIT SUPPLY, AND CORRESPONDING INTEGRATED CIRCUIT - An integrated circuit includes: a primary supply stage including a primary supply node, the primary supply stage being configured to deliver a primary supply voltage to the primary supply node; a secondary supply stage including a secondary supply node, the secondary supply stage being configured to deliver a secondary supply voltage to the secondary supply node; a supply-switching circuit; a pre-charging circuit controllably coupled to the secondary supply node via the supply-switching circuit; and a volatile memory circuit controllably coupled to the primary supply node and the secondary supply node via the supply-switching circuit, wherein the switching circuit is configured to connect a supply of the volatile memory circuit either to the primary supply node in a primary supply mode, or to the secondary supply node in a secondary supply mode. | 2021-12-16 |
20210391745 | UNINTERRUPTIBLE POWER SUPPLY SYSTEM AND UNINTERRUPTIBLE POWER SUPPLY - An uninterruptible power supply system includes a plurality of uninterruptible power supplies, each of which includes a rectifier and an inverter and switches between a normal operation mode for normal operation and a load simulation mode for simulating a load. | 2021-12-16 |
20210391746 | METHOD AND DEVICE FOR DETERMINING PARAMETER OF PASSIVE IMPEDANCE ADAPTER APPLICABLE TO VSC-HVDC - Method for determining parameter of a passive impedance adapter applicable to VSC-HVDC, including: S | 2021-12-16 |
20210391747 | Dynamic Computation and Control of Distributed Assets at the Edge of a Power Grid - A system enabling localized intelligent control with communication and coordination at local subsections of a power grid with information transfer to utility for supervisory control is disclosed. The disclosure extends the control and communication capability within, at the edge, and outside the edge of the power grid using intelligent and self-aware FACTS devices. Aspects of the disclosure enable control of a distribution network, energy storage systems and generation sources as an integrated system allowing optimization of power grid operation from generation to distribution. This control capability further enables a supervisory utility to implement and manage policy issues, such as standard compliance, carbon emission reduction, right-of-way management, and conformance to environmental regulations, such as EMI compliance, noise reduction, etc. This also allows the supervisory utility to optimize energy cost, network reliability, and asset utilization and life. | 2021-12-16 |
20210391748 | APPARATUS FOR TRANSFERRING ELECTRICAL POWER TO AN ELECTRICAL LOAD WITH CONVERTER - The invention describes an apparatus ( | 2021-12-16 |
20210391749 | HYBRID WIRELESS POWER TRANSFER SYSTEM FOR AN ELECTRONIC DEVICE - A respective first signal is applied to a first terminal of each of one or more litz coils and each of one or more printed circuit board (PCB) coils. A respective second signal is received from a second terminal associated with each of the one or more litz coils and the one or more PCB coils. The respective second signal is based on the respective first signal applied to the first terminal of each of one or more litz coils and each of one or more printed circuit board (PCB) coils. A coil is selected from the one or more litz coils and the one or more PCB coils where the selected coil is based on the respective second signal from the second terminal associated with each of the one or more litz coils and the one or more PCB coils. The selected coil is caused to wirelessly transfer the power to an electronic device. | 2021-12-16 |
20210391750 | NEAR-FIELD WIRELESS POWER TRANSMISSION TECHNIQUES - Disclosed is a wireless power transmitter for wirelessly delivering power to a receiver device, the wireless power transmitter including: a plurality of unit cells configured to radiate one or more radio frequency (RF) power transmission waves, each unit cell in the plurality of unit cells including: (i) a metal portion having an interior perimeter that surrounds an aperture defined by the metal portion; and (ii) an antenna that is aligned with the aperture in a first dimension, the antenna being configured to radiate one or more RF power transmission waves for wirelessly charging a receiver device. The one or more RF power transmission waves leak from the wireless power transmitter at least in part through the aperture when the receiver device is positioned within a threshold distance from the unit cell. | 2021-12-16 |
20210391751 | TUNING RADIO FREQUENCY ELEMENTS - Aspects of the present disclosure may relate to an apparatus, a method, and non-transitory computer-readable storage medium configured for tuning radio frequency elements. In some aspects, the aspects may relate to at least one radio frequency element, at least one wireless charging, one or more channels configured to run between a first portion at least substantially adjacent to the at least one wireless charging coil and a second portion at least substantially adjacent to the at least one radio frequency element, and a dielectric fluid disposed within the one or more channels. | 2021-12-16 |
20210391752 | HARDWARE AND METHOD FOR ENHANCED WIRELESS RECEIVER OUTPUT POWER - A method of wirelessly transmitting power includes: causing a power transmission circuit to transmit, to a master power reception circuit, a portion of power it is capable of transmitting; adjusting operation of a slave power reception unit until a first rectified voltage produced by the master power reception circuit and a second rectified voltage produced by the slave power reception unit are equal; causing the power transmission circuit to transmit additional power to the slave power reception unit, resulting in the first and second rectified voltages being unequal; and adjusting operation of the slave power reception unit until the first and second rectified voltages are again equal. A dummy load is connected to the slave power reception unit prior to causing the power transmission circuit to transmit the additional power, and is disconnected once the first and second rectified voltages are equal. | 2021-12-16 |
20210391753 | TERMINAL AND WIRELESS CHARGING CONTROL METHOD - A terminal, includes: a coil disposed inside the terminal; a wireless charging module that is electrically connected to the coil, and includes a wireless charging transmitting circuit and a wireless charging receiving circuit that are electrically connected to the coil; a detection module electrically connected to the wireless charging module and a wired charging port of the terminal. When detecting that electric energy input to the wired charging port, the detection module sends a first electrical signal to the wireless charging module, and the wireless charging module initiates the wireless charging transmitting circuit based on the first electrical signal; when detecting that no electric energy is input to the wired charging port, the detection module sends a second electrical signal to the wireless charging module, and the wireless charging module initiates the wireless charging receiving circuit based on the second electrical signal. | 2021-12-16 |
20210391754 | DISTRIBUTED CONTROL ADAPTIVE WIRELESS POWER TRANSFER SYSTEM - A wireless power transfer system includes a transmitter configured to transmit power to a receiver, for example, through coupled resonators. The transmitter receives feedback from the receiver, and uses the feedback to control the power transmission, to control a parameter at the receiver, for example, a rectified voltage output by the receiver. The feedback to the transmitter may be provided, for example, by an out-of-band radio system between the transmitter and receiver, by a reflection coefficient at the transmitter, and/or by an encoded modulation of power in the receiver, for example, in an impedance matching module. The transmitter may control the transmitted power, for example, by controlling a transmitter signal generator voltage (V | 2021-12-16 |
20210391755 | NON-CONTACT OPTICAL POWER FEEDING METHOD USING A MULTI-JUNCTION SOLAR CELL, AND LIGHT-PROJECTING DEVICE FOR OPTICAL POWER FEEDING - There are provided a method and a device for feeding electric power to a vehicle, etc. installed with a solar photovoltaic power generation panel employing a multi-junction solar cell in a non-contact manner by irradiating light to the solar photovoltaic power generation panel. In the method, light containing a wavelength component absorbed by each of all solar cell layers laminated in a multi-junction solar cell of the vehicle, etc. is projected from a light-projecting device to the light receiving surface of the multi-junction solar cell; and electric power generated by the irradiation of light from the multi-junction solar cell is taken out. The device includes structures for emitting light containing a wavelength component absorbed by each solar cell layer laminated in the multi-junction solar cell, and for irradiating the light to a light receiving surface of the multi-junction solar cell. | 2021-12-16 |
20210391756 | RECEIVERS AND TRANSMITTERS FOR WIRELESS CHARGING OF DEVICES IN MOTION - An example receiver device to be wirelessly charged in motion includes a power receiver to receive a power beam to charge a power supply and a modulating reflector. The modulating reflector is to reflect a portion of the power beam as a reflected signal, modulate the reflected signal, and vary a direction of the reflected signal to scan an area for an example power beam transmitter device. The power beam transmitter device is to track motion of the receiver device based on modulation of the reflected signal and to cooperate with other power beam transmitter devices to prioritize distribution of power among a plurality of receiver devices. An example system for wireless charging of devices in motion includes a plurality of power beam transmitter devices to coordinate transmission of power beams to a receiver device based on the motion of the receiver device. | 2021-12-16 |
20210391757 | DYNAMIC WIRELESS POWER TRANSFER SYSTEM - A dynamic wireless power transfer system performs, through a plurality of primary coils installed along a traveling direction of a road and a secondary coil mounted in a vehicle, power transfer to the vehicle while the vehicle is traveling. The secondary coil is an M-phase coil including M coils, M denoting an integer which is two or higher. The M coils each include a coil end extending along a front-rear direction of the vehicle and a main coil portion extending along a width direction of the vehicle, the M coils each being configured such that a magnetic resistance of a magnetic path where a magnetic flux of the coil end passes is higher than a magnetic resistance of a magnetic path where a magnetic flux of the main coil portion passes. | 2021-12-16 |
20210391758 | FOREIGN OBJECT DETECTION IN WIRELESS POWER TRANSFER - A system for wireless power transfer includes a plurality of transfer elements, each transfer element of the plurality of transfer elements being configured as a transmitter for the wireless power transfer or a receiver for the wireless power transfer, a plurality of sensors, each sensor of the plurality of sensors being positioned relative to the plurality of transfer elements and configured to generate sensor data indicative of a field implementing the wireless power transfer, and a processor coupled to the plurality of sensors and configured to determine an estimate of a terminal variable level in a respective transfer element of the plurality of transfer elements based on the sensor data, and to determine whether a foreign object is affecting the wireless power transfer based on whether the estimated terminal variable level is different from another assessment of the terminal variable level by more than a threshold. | 2021-12-16 |
20210391759 | POSITION DETECTION SYSTEM AND WIRELESS POWER TRANSMISSION SYSTEM - Provided is a position detection system capable of detecting a position with high accuracy when position detection is performed using an antenna on a transmission side and an antenna on a reception side. In the position detection system, at least one of a transmission antenna and a reception antenna is a multi-axis antenna including a first winding portion formed by winding a first conducting wire and a second winding portion formed by winding a second conducting wire. An axial direction of a first winding axis of the first winding portion and an axial direction of a second winding axis of the second winding portion are two directions different from each other. The first winding portion and the second winding portion are electrically connected to each other. | 2021-12-16 |
20210391760 | SPLIT ELECTRIC MACHINE FOR RETROFIT HYBRID PROPULSION SYSTEMS - A device includes a first rotor segment and a second rotor segment, wherein the first rotor segment and the second rotor segment are configured to be directly coupled together about a shaft to form at least a portion of a unitary rotor. The device also includes a first stator segment and a second stator segment, wherein the first stator segment and the second stator segment are configured to be directly coupled together to form at least a portion of a unitary stator. | 2021-12-16 |
20210391761 | ROTATING ELECTRIC MACHINE - A rotating electric machine includes a field element and an armature. The field element includes a magnet portion that includes a plurality of magnets arranged in an array in a circumferential direction. In the magnet, an easy axis of magnetization is oriented in a circular arc shape such that, on a d-axis side closer to a d-axis that is a magnetic pole center, the orientation of the easy axis of magnetization is parallel to the d-axis compared to a q-axis side closer to a q-axis that is a magnetic pole boundary, and a circular-arc-shaped magnet magnetic path is formed along the easy axis of magnetization. The magnet is formed into a circular arc shape when viewed from an axial direction of the rotor, and is provided with a first reference surface that is a planar surface and a second reference surface that is parallel to the first reference surface. | 2021-12-16 |
20210391762 | ROTOR OF MOTOR AND AUTOMOBILE - This application provides a rotor of a motor, including: a rotating shaft, provided with at least one first liquid outlet; a first end plate, disposed on an outer wall of the rotating shaft and perpendicular to the rotating shaft, where an inlet of at least one third passageway is provided on the first end plate; a second end plate, disposed on the outer wall of the rotating shaft and perpendicular to the rotating shaft, where an outlet of the at least one third passageway is provided on the second end plate; and a plurality of lamination sheets, disposed between the first end plate ( | 2021-12-16 |
20210391763 | ARMATURE - In the armature, a first connecting part and a second connecting part that are disposed so as to be adjacent to a connecting part of a different phase have a higher insulatable voltage value than a first leg part and a second leg part that are disposed so as to be adjacent to a leg part of the same phase. | 2021-12-16 |
20210391764 | ROTATING ELECTRICAL MACHINE - A rotating electrical machine is equipped with a stator including a stator winding and a stator core with slots. The stator winding includes phase coils each of which is wound in the slots and connected at an end to a phase terminal and at the other end to a neutral point. The phase coils are each made up of unit coils connected in series between a corresponding one of the phase terminals and the neutral point and connected together using connecting conductors. Each of the phase coils includes two or more reversing connecting conductors each of which orients a direction in which the connecting conductor extends from the (i+1) | 2021-12-16 |
20210391765 | ROTATING ELECTRIC MACHINE - A rotating electric machine includes a stator and a rotor. The stator includes a stator core that has a plurality of slots that are arranged in a circumferential direction and a stator winding that has a plurality of phase coils that are wound in the slots. The rotor is arranged so as to oppose the stator in a radial direction and has a plurality of magnetic poles in the circumferential direction. In the rotating electric machine, each of the phase coils has a plurality of series-connection coil groups that each includes n unit coils that are arranged to be wound in the circumferential direction. In each of the series-connection coil groups, a first end thereof is connected to a phase terminal for a respective phase and a second end is connected to a neutral point, and the series-connection coil groups are connected in parallel. | 2021-12-16 |
20210391766 | MOTOR - A motor according to an embodiment includes a shaft as a rotation axis, a rotor, a bearing, and a spring member. The rotor is fixed to the shaft. The bearing is disposed opposite to the rotor in the rotation axis direction and rotatably supports the shaft. The spring member is disposed between the rotor and the bearing and includes a first end portion fixed to the rotor. | 2021-12-16 |
20210391767 | ACTUATOR - An actuator includes: a first motor including a first stator and a first rotor; a second motor and including a second stator and a second rotor; a shaft member penetrating through the first rotor and the second rotor, and including a first part protruding from the first rotor toward an opposite side to the second rotor and including a spline groove, and a second part protruding from the second rotor toward an opposite side to the first rotor and including a male screw portion; a spline outer cylinder engaging with the spline groove to guide the shaft member and configured to rotate together with the first rotor to enable the shaft member to rotate; and a nut member provided with a female screw portion engaging with the male screw portion of the shaft member, and configured to rotate together with the second rotor to enable the shaft member to move. | 2021-12-16 |
20210391768 | FAN MOTOR - The fan motor according to the present invention comprises a fan ( | 2021-12-16 |
20210391769 | Compressed Air Accumulation System For Power Generation - A compressed air generation system that provides compressed air for a variety of applications including generation of electricity. The a system for accumulating and storing compressed air that is later used for a variety of applications including energy generation. The system uses mechanical air pumps that are activated when vehicles, including cars and buses, pass over air pumps imbedded in the road surface. Alternative embodiments use air compression pumps to store compressed air when the moving vehicles, such as trains, pass over railroad ties. The compressed air is fed into air accumulators that are used to produce clean electrical energy. | 2021-12-16 |
20210391770 | Motor, Apparatus, and Method of Manufacturing Motor - A motor comprises a rotor; a stator arranged outside the rotor about a central axis of the rotor; a tubular enclosure arranged outside the stator about the central axis and contacting the stator, the tubular enclosure comprising a fluid channel and circumferential rabbets, the fluid channel extending between a first end and a second end of the tubular enclosure, the circumferential rabbets being arranged at the ends of the tubular enclosure and comprising respective corners; sealing rings arranged at the respective corners of the circumferential rabbets; and a pair of covers coupled to the respective ends of the tubular enclosure by mating with the circumferential rabbets, the pair of covers pressing the respective sealing rings and closing the fluid channel at the ends of the tubular enclosure. | 2021-12-16 |
20210391771 | ELECTRICAL CONTROL ASSEMBLY AND ELECTRICAL DEVICE - Disclosed are an electric control assembly and an electrical device. The electric control assembly includes an electric control board and a metal plate arranged on one side of the electric control board in parallel. The electric control board includes a first filter circuit and a power supply line. The power supply line includes a power input terminal, a rectifier circuit, an intelligent power module and a power output terminal. The power input terminal, the rectifier circuit, the intelligent power module and the power output terminal are connected in sequence. A first end of the first filter circuit is connected with the power supply line. The metal plate and the electric control board are arranged at an interval. The metal plate is electrically connected with a shell of the electrical load. A second end of the first filter circuit is electrically connected with the metal plate. | 2021-12-16 |
20210391772 | MOTOR STATOR ANTI-INTERFERENCES STRUCTURE - A motor stator anti-interference structure includes: a silicon steel sheet assembly, the silicon steel sheet assembly including multiple silicon steel sheets held between an insulation support assembly; a winding assembly wound on the silicon steel sheet assembly and the insulation support assembly; and a connection member inlaid in the silicon steel sheet assembly to contact all the silicon steel sheets. All the silicon steel sheets are connected to a grounding end of a circuit board through the connection member so as to increase contact area between the connection member and the silicon steel sheet assembly. The electromagnetic interference is conducted through the connection member to the grounding end of the circuit board. | 2021-12-16 |
20210391773 | ELECTRIC MACHINE WITH MORE PRECISE MEASUREMENT - The invention relates to an electric machine comprising a rotor and a stator. The rotor ( | 2021-12-16 |
20210391774 | Sensor Assembly for an Electric Machine - A sensor assembly for an electric machine includes a position sensor mounted to the stator. The sensor assembly further includes a target configured to be inductively coupled to a transmit coil of the position sensor and a plurality of receive coils of the position sensor when the target passes the position sensor during a revolution of the rotor relative to the stator. The sensor assembly includes a circuit mounted to the rotor. The sensor assembly further includes a power generation element on the rotor. The power generation element generates electrical power needed for powering electronic components of the circuit based on an inductive coupling with the transmit coil when the power generation element passes the position sensor during the revolution of the rotor. The electronic components can include a sensor configured to obtain data that can be communicated to the position sensor mounted to the stator. | 2021-12-16 |
20210391775 | Method for Producing Lamination Stacks and Facility for Performing the Method - In a method for producing stacks of laminations, in which at least one adhesive is applied onto annular laminations with at least one application head and laminations are stacked into a stack of laminations, the lamination is rotated about its axis in the application area of the application head and/or the application head is moved about the axis of the lamination in order to apply the adhesive onto the lamination. A system for carrying out the method features at least one punching tool, with which laminations are punched out of a sheet metal material, wherein at least one station for cleaning and/or for activating and/or for applying an adhesive onto the laminations is arranged downstream of the punching tool. | 2021-12-16 |
20210391776 | ROTOR MANUFACTURING METHOD AND ROTOR MANUFACTURING DEVICE - A method of manufacturing a rotor is disclosed. A magnet is inserted into a magnet hole of a rotor core. The method comprises inserting an insertion member into the magnet hole having a first opening and a second opening. The method comprises fixing the magnet to the insertion member extending out from the second opening. The method comprises inserting the magnet, which is fixed to the insertion member, into the magnet hole from the second opening by pulling the insertion member extending out from the first opening in a direction separating away from the rotor core. The method comprises cutting the insertion member extending out from the first opening. | 2021-12-16 |
20210391777 | A PERMANENT MAGNET GENERATOR - A generator arranged to be driven by an aircraft engine, the generator comprising a stator and a rotor. The stator comprises a stator core and a plurality of slots longitudinally extending in a direction of a longitudinal axis of the stator, for receiving conductors to form windings of the stator, and a plurality of power channels. Each power channel comprises a set of windings having at least a first phase winding including a first set of coils comprising a plurality of conductors wound in a lap winding configuration, the first set of coils having a split phase belt such that the first set of coils comprises at least a first coil and a second coil, the first coil being mechanically shifted with respect to the second coil by a predetermined number of slots of the stator. The rotor comprises a permanent magnet adapted to reduce eddy-current losses. | 2021-12-16 |
20210391778 | FLYWHEEL SYSTEM WITH STATIONARY SHAFT - A flywheel system includes a rotor and a fixture. The rotor forms an aperture. The fixture includes a bottom support, a top support, and a shaft connecting the bottom support to the top support. The shaft passes through the aperture. The bottom support and the top support are outside opposite ends of the aperture. The rotor is configured to rotate about the shaft. A method for operating a flywheel system includes converting between rotational energy of a rotor and electrical energy in windings of a generator stator that is implemented in a stationary shaft passing through an aperture of the rotor, while the rotor is rotating about the shaft. | 2021-12-16 |
20210391779 | CRYOGENIC COOLING IN ELECTRICAL MACHINES - The invention describes a rotor ( | 2021-12-16 |
20210391780 | DETECTION OF POWER SUPPLY CIRCUIT IRREGULARITIES - Embodiments of the present disclosure describe frequency detection techniques for detecting power irregularities. These irregularities may include variations or abnormalities in switched-mode power supply circuit switching behavior, power spikes, and/or output oscillations. The frequency detection techniques may compare different frequency components of the power signal to detect irregularities. | 2021-12-16 |
20210391781 | SWITCHING CONTROL CIRCUIT AND POWER SUPPLY CIRCUIT - A switching control circuit for controlling a power supply circuit that generates an output voltage from an alternating current (AC) voltage inputted thereto. The power supply circuit includes an inductor receiving a rectified voltage corresponding to the AC voltage, and a transistor controlling an inductor current flowing through the inductor. The switching control circuit controls switching of the transistor, and includes a first arithmetic circuit that calculates a first time period, from when the transistor is turned off to when the inductor current reaches a predetermined value, based on a first voltage corresponding to the rectified voltage, a second voltage corresponding to the output voltage, and the inductor current upon turning on of the transistor; and a drive circuit that causes the transistor to be on in a second time period corresponding to the second voltage, and causes the transistor to be off in the first time period. | 2021-12-16 |
20210391782 | ACTIVE DAMPING OF SOFT SWITCHING RESONANT CONVERTERS - A soft switching resonant converter is disclosed. The converter includes a power switch operable to connect and disconnect a DC link rail node and an output node. A resonant capacitor is coupled with the power switch. An auxiliary leg is coupled with a DC link midpoint node and the output node. An active damper is coupled in series with the resonant capacitor and the output node and is controllable to provide a first resistance of the active damper in a first state and a second resistance of the active damper in a second state, the first resistance having a lower magnitude than the second resistance. A driver controls the damper switch to provide a first resistance during the soft switching operation of the power switch and a second resistance after the soft switching operation of the power switch. | 2021-12-16 |
20210391783 | METHOD AND APPARATUS FOR RAPID SHUTDOWN OF ISLANDABLE INVERTERS USING OPEN CIRCUIT DETECTION - A method and apparatus for autonomous rapid shut-down of a power conditioner. In one embodiment, the method comprises determining an amount of active and reactive current generated by a power conditioner; determining whether the amount of active and reactive current satisfies an open circuit threshold; and initiating, when the amount of active and reactive current satisfies the open circuit threshold, deactivation of the power conditioner. | 2021-12-16 |
20210391784 | HALF-BRIDGE WITH VARIABLE DEAD BAND CONTROL AND ZERO-VOLTAGE SWITCHING - An improved method for zero-voltage switching (ZVS) of a voltage-fed half-bridge using a variable dead band is provided. The duration of the dead band is determined dynamically and is precisely long enough to ensure the absence of shoot-through events while also minimizing or eliminating switching losses and reverse conduction losses. The method generally includes: (a) calculating the equivalent capacitance as seen by the current source charging the midpoint of the half-bridge; (b) calculating the ZVS charge requirement based on the link voltage and the equivalent capacitance; (c) calculating the charge delivered by the current source over time during a dead band vector, equating the result to the ZVS charge requirement, and solving for the ZVS time requirement at each commutation point over the switching cycle; and (d) updating the dead bands for each commutation of each half-bridge in the switched-mode power converter. | 2021-12-16 |
20210391785 | ELECTROMAGNETIC EMISSION REJECTION FILTER IN HYBRID/ELECTRIC VEHICLES - The disclosure describes techniques to filter unwanted noise from feedback signals of an electrical machine. An electrical machine may receive AC power from an inverter and circuitry in the inverter may cause noise on the AC power signals to the electrical machine. The noise may couple to sensors for the electrical machine and cause noise in the sensor output signals. The sensor output signals may provide feedback for a closed loop control system for the electrical machine and noise may impact the closed loop operation. Also, the noise in the feedback signals may cause electromagnetic compatibility (EMC) issues, either by direct radiated emissions or by coupling to other circuits in the vehicle wiring harness as the feedback signals travel from the electrical machine. The techniques of this disclosure may include filter circuitry located near or inside the electrical machine that filters out the unwanted noise in the feedback signals. | 2021-12-16 |
20210391786 | Power Converter - A power converter includes a first flying capacitor, an inductor, and a driver. A network of switches has a first switch to couple the first flying capacitor to a first port, and a second switch to couple the inductor to ground. The driver is adapted to drive the network of switches with a sequence of states that includes a first state and a second state. In the first state the ground port is coupled to a second port via a first path comprising the first flying capacitor and the inductor, and the first port is decoupled from the second port. In the second state the ground port is coupled to second port via a second path comprising the second switch and the inductor, and the first port is coupled to the second port via a third path comprising the first flying capacitor while bypassing the inductor. | 2021-12-16 |
20210391787 | Power Converter - A power converter includes a network of switches having a first capacitor switch coupled to a first flying-capacitor, a first switch to couple a second flying-capacitor to a first port, an inductor coupled to a ground switch. A driver drives the network of switches in two states. In the first state the ground port is coupled to a second port via a first path comprising the first flying-capacitor and the inductor, and the first port is coupled to the second port via a second path comprising the first switch, the second flying-capacitor and the inductor. In the second state the ground is coupled to the second port via a third path comprising the ground switch and the inductor, and one of the first port and the ground port is coupled to the second port via a fourth path comprising the first flying-capacitor while bypassing the inductor. | 2021-12-16 |
20210391788 | POWER SUPPLY CONTROL DEVICE, POWER SUPPLY CONTROL METHOD, AND COMPUTER PROGRAM - A power supply control device controls power supply to a load through a power supply switch. A driving circuit switches on or off the power supply switch. When the driving circuit switches the power supply switch from off to on, a waveform value regarding the current waveform of a current that flows through the load is output by a waveform value detection unit to a microcomputer. The microcomputer determines power supply control conditions regarding control of power supply to the load based on the waveform value that is input from the waveform detection unit. | 2021-12-16 |
20210391789 | Driving Device - A driving device comprises a first transistor (B | 2021-12-16 |
20210391790 | MULTIPLE DITHERING PROFILE SIGNAL GENERATION - At least some aspects of the present disclosure provide for a system. In some examples, the system includes a pulse width modulation (PWM) generator configured to generate a PWM signal. The PWM generator generates the PWM signal by generating a first signal having a first dithering profile and a first frequency bandwidth, generating a second signal having a second dithering profile and a second frequency bandwidth greater than the first frequency bandwidth, modulating the second signal with the first signal to generate a dual random spread spectrum signal, and generating the pulse width modulation signal according to the dual random spread spectrum signal. | 2021-12-16 |
20210391791 | POWER SUPPLY SYSTEM, CONTROL DEVICE, AND METHOD FOR MEASURING REACTOR CURRENT - A controller of a power supply system includes a memory configured to store a self-inductance and a mutual inductance of two reactors included in a boost converter; and a processor configured to determine a present operating state of the boost converter, based on a ratio of an input voltage into the boost converter to an output voltage therefrom, a duty ratio applied to switching elements of the boost converter, the self-inductance, and the mutual inductance, the present operating state being one of operating states among which the waveform of a reactor current differs; and measure an average of the reactor current in a predetermined switching period of the switching elements, based on the input voltage, the output voltage, and the duty ratio, in accordance with the waveform of the reactor current corresponding to the present operating state of the boost converter. | 2021-12-16 |
20210391792 | CURRENT-CONTROLLED, SINGLE-INDUCTOR, MULTIPLE-OUTPUT, DC-DC CONVERTER WITH CONTINUOUS CONDUCTION AND DISCONTINUOUS CONDUCTION MODES - A controller for a SIMO DC-DC converter operable in CCM and DCM receives a signal representative of an inductor current, and signals representative of a first and a second DC-DC converter output. The controller has a first and second output adapted to control electronic switches coupled to a first and second output filter, and a third and fourth output adapted to control current in an inductor. The controller controls the outputs based upon the inputs by determining a desired PWL inductor current and current waveform, and determines pulsewidths of the outputs, to match the inductor current to the desired PWL. A timer controls pulsewidths of the outputs and the controller dynamically selects DCM or CCM to maintain the first and second DC-DC converter outputs at predetermined levels. In embodiments, the desired PWL inductor current is one or both of a desired valley current and a desired peak current. | 2021-12-16 |
20210391793 | SYSTEM AND METHOD FOR ZERO VOLTAGE SWITCHING AND SWITCH CAPACITOR MODULATION - A driver circuit for driving a single conductor line that is coupled to a series of individually controlled circuit units each including a capacitor includes a power supply circuit for supplying a constant current to the single conductor line and a line driver supply circuit configured to modulate a digital information signal onto the constant current on the single conductor tine. The line driver further includes a signaling transistor structured to operate in a zero voltage switched mode at least part of the time, and a signaling inductor coupled between the single conductor line and the signaling transistor. | 2021-12-16 |
20210391794 | DUAL OUTPUT CONFIGURABLE POLARITY UNIVERSAL BUCK-BOOST TOPOLOGY AND SWITCHING SEQUENCE - A single input dual output buck-boost power conversion system includes a voltage source input for connecting a voltage source for power conversion. A plurality of switches electrically connect to the voltage source input, wherein each switch is connected to a controller configured for pulse width modulation (PWM) control of the switches. A first voltage output is configured to connect to a first load to power the first load with converted power from the voltage source input. A second voltage output is configured to connect to a second load to power the second load with converted power from the voltage source input, wherein the controller is configured to provide positive voltage or negative voltage to each of the first and second voltage outputs, as needed for any of four combinations of polarity among the first and second voltage outputs including positive-positive, positive-negative, negative-positive, and negative-negative. | 2021-12-16 |
20210391795 | POWER FIELD EFFECT TRANSISTOR TOPOLOGY AND BOOTSTRAP CIRCUIT FOR INVERTING BUCK-BOOST DC-DC CONVERTER - For a buck-boost DC-DC converter with n-type high-side field effect transistor (HSFET), a supply is derived from input and output rails, and this supply maintains a constant differential voltage independent of input supply voltage. The derived supply is used as the high supply (HS) of an HSFET Driver. As such, the HSFET resistance becomes independent of supply variation. A wide range ultra-low IQ (Quiescent current), edge triggered level-shifter provides support to a bootstrapped power stage of the inverting buck-boost DC-DC converter. When p-type HSFET is used, a supply is derived from the input and output supply rails, and this derived supply maintains a constant differential voltage independent to the input supply voltage. The derived supply is used as the low supply (LS) or ‘ground’ of the HSFET Driver. As such, the p-type HSFET resistance becomes independent of supply variation. | 2021-12-16 |
20210391796 | Battery Path Impedance Compensation - A power system for a battery powered device can include a first stage power converter, a charge injector, and a bypass switch. The first stage power converter can be configured to have an input coupled to a battery and operable to convert a battery voltage to a level higher than a main voltage bus of the battery powered device. The charge injector can include an input coupled to the output of the power converter and an output configured to be coupled to the main voltage bus. The bypass can include one or more bypass switches operable to selectively couple an output of the power converter to the main voltage bus, bypassing the charge injector. The charge injector may be selectively operable as a current source configured to draw power from an output of the power converter and the battery to reduce voltage dips of the main voltage bus. | 2021-12-16 |
20210391797 | UNIVERSAL BUCK-BOOST TOPOLOGY AND SWITCHING SEQUENCE - A buck-boost power converting system includes a voltage source input for connecting a voltage source for power conversion. A plurality of switches are connected electrically to the voltage source input, wherein each switch is connected to a controller configured for control of the switches. A voltage output is configured to connect to a load to power the load with converted power from the voltage source input, wherein the controller is configured to provide positive voltage or negative voltage at a desired level to the voltage output, as needed. | 2021-12-16 |
20210391798 | SIMPLE STABILIZATION OF HALF-BRIDGE CONVERTER OVER ITS OPERATING TEMPERATURES - A half bridge DC-DC converter device includes a primary circuit and a secondary circuit, which include separate windings that are disposed around a magnetic core. The first circuit includes two switches and a drive circuit to turn the two switches on and off in an alternating fashion. The primary circuit further includes two thermal regulating components to regulate the current at the base of the two switches over a range of operating temperatures. The regulation of base current over a range of different operating temperatures results in the half bridge converter device being efficient and maintaining a stable switching frequency over the operational temperature range. | 2021-12-16 |
20210391799 | High Performance Two Stage Power Converter With Enhanced Light Load Management - A two-stage power converter can incorporate a buck pre-regulator and a resonant bus converter. Such a converter may be operated to achieve unconditional soft switching operation (zero voltage switching a/k/a ZVS) over a wide input and output range, while delivering excellent power conversion efficiency at lower power levels and in a no load condition. | 2021-12-16 |
20210391800 | RESONANT CONVERTER CIRCUIT WITH SWITCHING FREQUENCY CONTROL BASED ON INPUT VOLTAGE - A control method for regulating the switching frequency of a resonant converter having an input terminal to receive an input voltage and an output terminal to output an output voltage. The control method is sensing the input voltage and adjusting the switching frequency based on the comparison of the input voltage with a reference threshold voltage. When the input voltage is less than the reference threshold voltage, the switching frequency is adjusted to decrease, and when the input voltage is higher than the reference threshold voltage, the switching frequency is adjusted to increase. | 2021-12-16 |
20210391801 | RESONANT POWER CONVERTER - A power converter having a parallel resonant circuit, includes an inverter, a resonant circuit, a transformer comprising a primary circuit and a secondary circuit, control means for the inverter, the inverter being connected to the resonant circuit, which is intended to be connected to an output load via the transformer, the power converter wherein the inverter comprises a first half-bridge and a second half-bridge in parallel with the first half-bridge, a first inductor between the first half-bridge and the resonant circuit, a second inductor between the second half-bridge and the resonant circuit, and in that the first and second inductors have the same inductance and are coupled in the opposite direction to one another. | 2021-12-16 |
20210391802 | DC-DC CONVERTER - It is an object to provide a technique capable of achieving a multi-output DC-DC converter mounted at low cost or high density. A DC-DC converter includes a transformer, a first circuit, and at least one second circuit. The second circuit includes an individual control device selectively accumulating and taking out an electrical power in a secondary winding corresponding to the second circuit based on an electrical power taken out from the secondary winding, and converts an AC voltage of the secondary winding into a DC voltage. | 2021-12-16 |
20210391803 | MODULAR IN-WALL AC-DC POWER SUPPLY - Various embodiments of the present technology relate to power supplies and interchangeable modules coupled with power supplies used to control a load. In operation, a switch assembly includes two components: a power supply module and a removable module, which function to convert AC to DC to provide input modularity and enhanced control of the input and load. The power supply module comprises AC circuitry configured to convert an AC signal to DC. The power supply module also comprises an interface coupled with the removable module and logic circuitry configured to control an aspect of a load based on an indication from input devices of the removable module. The removable module comprises a communication interface configured to provide the indication from the input devices to the logic circuit via the interface. Also, the removable module comprises DC circuitry to provide power to the removable module. | 2021-12-16 |
20210391804 | SELF BIASED RECTIFIER CIRCUIT - A self-biased rectifier circuit includes first and second input terminals and first and second output terminals. The self-biased rectifier circuit also includes a rectifier having first, second, third, and fourth transistors, each having a source, gate, and drain. The sources of the first and second transistors and the gates of the third and fourth transistors are coupled to the first input terminal. The sources of the third and fourth transistors and the gates of the first and second transistors are coupled to the second input terminal. The drains of the first and third transistors are coupled to the second output terminal. The drains of the second and fourth transistors are coupled to the first output terminal. A feedback circuit includes a plurality of transistors configured as at least one rectifier. The feedback circuit is coupled to the gates of the first and third transistors and the plurality of transistors are configured to provide a first biasing voltage or a second biasing voltage to the gates of the first and third transistors depending upon a magnitude of power or voltage applied to the first and second input terminals. Additionally, or alternatively, the feedback circuit is coupled to the gates of the second and fourth transistors and the plurality of transistors are configured to provide a first biasing voltage or a second biasing voltage to the gates of the second and fourth transistors depending upon a magnitude of power or voltage applied to the first and second input terminals. | 2021-12-16 |
20210391805 | RECTIFIER CIRCUIT AND WIRELESS POWER TRANSMISSION APPARATUS - A rectifier circuit includes a switch circuit including at least one bidirectional switch and configured to rectify an alternating-current voltage of an alternating-current voltage line, and a surge suppression circuit connected to the alternating-current voltage line and configured to suppress a surge voltage of the switch circuit, where a dead time when the bidirectional switch is turned off is present. | 2021-12-16 |
20210391806 | THREE-PHASE SYSTEM AND DISTRIBUTED CONTROL METHOD THEREOF - Disclosed are three-phase system and distributed control method. The three-phase system comprises three-phase circuits, of which each phase circuit including at least one power conversion cell; and at least three phase controllers for controlling each phase circuit, respectively, each phase controller including a communication interface through which the at least three phase controllers are in communications connection with each other; wherein the phase controllers of each phase circuit is configured for regulating bridge arm voltages of the at least one power conversion cell in the phase circuit by receiving signals sent from the phase controllers of other two phase circuits through the communication interface. The three-phase system and the distributed control method of the invention solve problems of balance of three-phase current and stabilization of three-phase DC voltages by coordination among the three phases. Thanks to the invention, the three phases can be independently controlled to improve control flexibility. | 2021-12-16 |
20210391807 | POWER CONVERSION DEVICE - In a power conversion device in which cell converters are connected in series, each cell converter includes: main circuit conductors connecting switching elements and a capacitor to each other; a bypass portion disposed between two external terminals connected to other cell converters; external output conductors connecting the external terminals and the main circuit conductors to each other; and bypass connection conductors connecting the external output conductors and the bypass portion to each other. The bypass connection conductors or the external output conductors are disposed so as to oppose each other at a high-potential side and a low-potential side thereof. The conductors are bent so as to have portions at which currents in parts of the conductors have the same direction. Thus, mutual inductances and self-inductances are increased, whereby short-circuit current flowing to the bypass portion at the time of double failures is suppressed. | 2021-12-16 |
20210391808 | Power Control System and Controller for Power Control System - A power converter includes first and second arms, each having switching elements, and performs power conversion between a DC system and an AC system. An AC circuit breaker and a current control circuit are connected in series between the AC system and the power converter. The current control circuit includes a current-limiting resistor and a disconnector connected in parallel. A controller instructs a disconnector to close after an initial charge of the power converter and opens the AC circuit breaker when an impedance of a line between a first node located on a first end side of the current control circuit and a second node located on a second end side of the current control circuit is not less than a first threshold and an accumulated value of a current flowing through the current control circuit within a certain period of time is not less than a second threshold. | 2021-12-16 |
20210391809 | ELECTROSTATIC MACHINE SYSTEM AND METHOD OF OPERATION - An electrostatic machine includes a drive electrode and a stator electrode. The drive electrode and the stator electrode are separated by a gap and form a capacitor. The drive electrode is configured to move with respect to the stator electrode. The electrostatic machine further includes a housing configured to enclose the drive electrode and the stator electrode. The stator electrode is fixed to the housing. The electrostatic machine also includes a dielectric fluid that fills a void defined by the housing, the drive electrode, and the stator electrode. The dielectric fluid includes an ester. | 2021-12-16 |
20210391810 | ELECTROSTATIC MACHINE SYSTEM AND METHOD OF OPERATION - An electrostatic machine includes a drive electrode and a stator electrode. The drive electrode and the stator electrode are separated by a gap and form a capacitor. The drive electrode is configured to move with respect to the stator electrode. The electrostatic machine further includes a housing configured to enclose the drive electrode and the stator electrode. The stator electrode is fixed to the housing. The electrostatic machine also includes a dielectric fluid that fills a void defined by the housing, the drive electrode, and the stator electrode. The dielectric fluid includes a ketone, malonate, or an oxalate. | 2021-12-16 |
20210391811 | VOLTAGE-BASED BRAKING METHODOLOGY FOR A POWER TOOL - Braking a power tool motor based on a phase voltage of the motor. The power tool includes a motor and a power source providing operating power to the motor. A power switching network is between the power source and the motor to drive the motor. An actuator is operable to provide an input. An electronic controller is connected to the actuator and the power switching network. The electronic controller is configured to receive an indication related to initiating braking of the motor, control the power switching network to allow the motor to coast, monitor a phase voltage of the motor, determine whether the phase voltage of the motor is equal to or less than a phase voltage threshold, and control, in response to the phase voltage of the motor being equal to or less than the phase voltage threshold, the power switching network to brake the motor. | 2021-12-16 |
20210391812 | POSITION SENSOR OFFSET ERROR DIAGNOSIS AND CALIBRATION IN PERMANENT MAGNET SYNCHRONOUS MACHINE - A method of detecting angular position sensor offset mar (PSOE) in a permanent magnet synchronous machine operated from a closed-loop field oriented control and controller adapted to detect PSOE in a permanent magnet synchronous machine, includes sensing an electrical parameter of a machine drive current with a sensor from a location on the closed-loop field oriented control and comparing the electrical parameter with machine commands provided to the closed-loop field oriented control. It is determined that a PSOE has occurred from the comparing. | 2021-12-16 |