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1.发明公开公开(公告)号：US20240162830A1
公开(公告)日：2024-05-16
申请号：US17985915
申请日：2022-11-14
申请人： INVENT10 LIMITED
发明人： Kam Wah SIU
IPC分类号： H02M7/155 , H05B45/325 , H05B45/36
CPC分类号： H02M7/1552 , H05B45/325 , H05B45/36 , H05B45/48
摘要： Embodiments of the invention provide a 3-phase rectifying circuit that may produce a DC voltage with much less ripple compared to a single-phase rectifying circuit. In one aspect, the circuit or switch of embodiments of the invention may provide a filtered DC voltage to drive a LED string formed by multiple LED units.
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公开(公告)号：US11955901B2
公开(公告)日：2024-04-09
申请号：US18174447
申请日：2023-02-24
发明人： Shoichi Hara
摘要： A switching device is provided. The apparatus includes a switching circuit and a noise filter. The switching circuit is capable of switching a connection destination of a first power conversion circuit other than a second power conversion circuit among the plurality of power conversion circuits between a phase corresponding to the first power conversion circuit and a certain phase of the external power supply. The second power conversion circuit corresponds to the certain phase of the external power supply. In the noise filter, a capacitor is provided on a side of the multiple-phase AC supply of the switching circuit.
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公开(公告)号：US11616452B2
公开(公告)日：2023-03-28
申请号：US17192641
申请日：2021-03-04
发明人： Shoichi Hara
摘要： A switching device is provided. The apparatus includes a switching circuit and a noise filter. The switching circuit is capable of switching a connection destination of a first power conversion circuit other than a second power conversion circuit among the plurality of power conversion circuits between a phase corresponding to the first power conversion circuit and a certain phase of the external power supply. The second power conversion circuit corresponds to the certain phase of the external power supply. In the noise filter, a capacitor is provided on a side of the multiple-phase AC supply of the switching circuit.
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公开(公告)号：US11469609B2
公开(公告)日：2022-10-11
申请号：US17017376
申请日：2020-09-10
发明人： Chen Tian , Jialiang Zhang
摘要： Provided are a power supply circuit, a power supply device and a control method. The power supply circuit includes a primary rectifier unit, a modulation unit, a transformer, a secondary rectifier and filtering unit, a current feedback unit, and a control unit. The power supply circuit removes a liquid electrolytic capacitor at a primary side. Moreover, the control unit may determine a type of a voltage of input alternating current, and set a current limit value in the current feedback unit according to the type of the voltage of the alternating current.
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公开(公告)号：US20220166340A1
公开(公告)日：2022-05-26
申请号：US17532717
申请日：2021-11-22
发明人： Yannick HAGUE , Romain LAUNOIS
摘要： A voltage converter delivers an output voltage between a first and a second node. The voltage converter includes a capacitor series-coupled with a resistor between the first and second nodes. The resistor is coupled in parallel with a bidirectional switch receiving at its control terminal a positive bias voltage referenced to the second node.
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6.发明授权公开(公告)号：US11070050B2
公开(公告)日：2021-07-20
申请号：US16116167
申请日：2018-08-29
发明人： Karl Benesch , Wolfgang Paul
IPC分类号： H02H7/12 , G01R19/165 , H02H1/00 , H02M3/335 , H02H3/42 , H02M7/155 , H02M3/156 , H02H3/087 , H02H7/122
摘要： A method and a circuit for complying with specified maximum values for output parameters a power supply unit includes at least a non-floating switch converter, an output voltage control unit, a current limiter and a switch element, wherein actual values of the current and voltage outputs of the power supply unit are measured continuously, where an evaluation unit calculates actual output power values of the power supply unit from the actual measured values of the output current and voltages, and subsequently compares at least the respective actually measured values of the output current and the respective actually calculated output power values with specified maximum values such that if at least one of the specified maximum values is exceeded by an actually measured value of the output current and/or by an actually calculated output power value, a current flow in the power supply unit is then interrupted by the evaluation unit.
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公开(公告)号：US11063524B2
公开(公告)日：2021-07-13
申请号：US16091566
申请日：2016-04-06
发明人： Martin Kapelke , Manfred Suda
摘要： An electrical device with a semiconductor circuit that is configured for a high voltage and is arranged in a housing. The housing is formed of a plurality of housing parts which are electrically insulated from one another. Different electrical potentials can be assigned to the housing parts. There is also described an converter with the electrical device.
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公开(公告)号：US20210151834A1
公开(公告)日：2021-05-20
申请号：US17159847
申请日：2021-01-27
发明人： Ahmad ASHRAFZADEH
IPC分类号： H01M50/502 , H02J7/00 , H02M7/155 , G01R31/3835 , H03K19/17784
摘要： A resistor ladder comprising identical resistors is disposed electrically in parallel with a multicell battery to calibrate voltage-controlled oscillators or analog-to-digital convertors for voltage balancing the battery cells in the multicell battery. Switches in a first state provide the voltage across each resistor as inputs to the VCOs or ADCs. The number of oscillations of the output signal of each VCO or ADC over a predetermined time period are compared to determine an offset error. Switches in a second state provide the voltage across each battery cell as inputs to the VCOs or ADCs. The battery cells with a higher relative voltage can be discharged until they are balanced. Some aspects describe temperature-adjusted and interpolated determinations of electrical quantities in the cells such as voltage and/or current.
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公开(公告)号：US20210021210A1
公开(公告)日：2021-01-21
申请号：US17044582
申请日：2018-06-07
摘要： A control device for controlling a power source connected to an alternating-current (AC) power system includes: a frequency control unit that controls a frequency of the power source operating in a constant-voltage constant-frequency control scheme; a power calculation unit that calculates, when the frequency control unit varies a frequency of the power source, a variation of an effective power output from the power source; an arithmetic unit that calculates a frequency characteristics constant of the AC power system, based on a variation of the frequency of the power source and the variation of the effective power output from the power source; and a selection unit that selects a control scheme for the power source, based on the frequency characteristics constant of the AC power system.
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公开(公告)号：US10819211B2
公开(公告)日：2020-10-27
申请号：US16025032
申请日：2018-07-02
发明人： Xiaoyu Yang , Zhiliang Hu , Yongjiang Bai
摘要： A method of controlling a secondary-side rectifier switch of a flyback converter, can include: detecting a slope parameter of a secondary-side detection voltage along a predetermined direction, where the secondary-side detection voltage is configured to represent a voltage across a secondary winding of the flyback converter; and controlling the secondary-side rectifier switch to turn on when the slope parameter is greater than a slope parameter threshold, and a relationship between the secondary-side detection voltage and the ON threshold meets a predetermined requirement.
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