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公开(公告)号：US20240321486A1
公开(公告)日：2024-09-26
申请号：US18577679
申请日：2022-07-08
发明人： Jungyong Chong
摘要： According to a passive-type harmonic removal device of the present invention, the intensities of all the 2nd to 50th harmonics present in an electric line are simultaneously reduced through a material part which includes N (N≥2) materials and is connected to the electric line in an electrically insulated state to receive and remove thermal energy of the electric line.
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公开(公告)号：US20240291283A1
公开(公告)日：2024-08-29
申请号：US18584765
申请日：2024-02-22
发明人： Aitang Chen , Dili Zhu
CPC分类号： H02J3/46 , H02J3/0075 , H02J3/01 , H02J2300/26
摘要： A power conversion apparatus including a first direct current conversion module, a second direct current conversion module, and a control module. The control module is configured to: in response to an output voltage of the first photovoltaic string being greater than an output voltage of the second photovoltaic string and a comparison value between the two output voltages being greater than a first threshold: control a switching transistor in the first direct current conversion module to be turned on or off to decrease the output voltage of the first photovoltaic string and control a switching transistor in the second direct current conversion module to be turned on or off to increase the output voltage of the second photovoltaic string, so that a comparison value between the output voltage of the second photovoltaic string and a bus voltage of the direct current bus is less than a second threshold.
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公开(公告)号：US12015304B2
公开(公告)日：2024-06-18
申请号：US17969194
申请日：2022-10-19
摘要： A power supply system includes a plurality of parallelly-connected uninterruptible power supplies (UPSs), where each UPS collects a first current of the UPS within a collection period in a first duration. In a current equalization period in the first duration, a direct current to alternating current conversion module is controlled to output a first compensation current, where the first compensation current includes at least one of a first compensation reactive current component or a first quantity of first compensation harmonic components.
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公开(公告)号：US20240039396A1
公开(公告)日：2024-02-01
申请号：US18161081
申请日：2023-01-29
发明人： CHIH-YUN LIN , CHIH-HSING CHEN
摘要： A surge protecting circuit is provided. A first stage filter circuit is connected to an alternating current (AC) source. A surge detection driver circuit is connected to a first stage filter circuit. A first snubber circuit is connected to the AC source. A first terminal of a first power switch is connected to the first snubber circuit. A control terminal of the first power switch is connected to the surge detection driver circuit. A first terminal of a second power switch is connected to a second snubber circuit. A second terminal of the second power switch is connected to an output terminal of the surge protecting circuit. A control terminal of the second power switch is connected to the surge detection driver circuit. A multi-stage filter circuit is connected to a second terminal of the first power switch and the second snubber circuit.
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5.发明公开公开(公告)号：US20230409796A1
公开(公告)日：2023-12-21
申请号：US18134336
申请日：2023-04-13
发明人： Jing LU , Pengfei WANG , Liuwei XU , Yanan WU , Zhiwei MAO , Huafeng MAO , Jun LI , Yunxiang TIAN
IPC分类号： G06F30/373 , H02J3/01
CPC分类号： G06F30/373 , H02J3/01 , H02J2203/20
摘要： An impedance matching method for a CLC branch of a low-frequency resonance suppression device is provided, which includes: establishing an equivalent circuit model for a power supply system with a low-frequency resonance suppression device joined in; obtaining, according to a target low-frequency harmonic frequency band and the equivalent circuit model, a constraint required by the power supply system for suppressing low-frequency harmonics; constructing an objective function based on a low-frequency harmonic suppression rate in a bus of the power supply system; obtaining a multi-constraint objective optimization function of CLC branch impedance based on the constraint and the objective function; and solving the multi-constraint objective optimization function through an improved harmony search algorithm to obtain an impedance parameter of the CLC branch. The present disclosure can ensure a low-frequency harmonic suppression effect for the power supply system.
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公开(公告)号：US20230399223A1
公开(公告)日：2023-12-14
申请号：US17806345
申请日：2022-06-10
CPC分类号： B81B3/0021 , H02J3/01 , B81B2201/0257 , B81B2203/0127 , B81B2207/01 , B81B2203/03
摘要： A microphone includes a microelectromechanical system (MEMS) device responsive to sound waves or vibrations having an output coupled to a first node; a programmable gain amplifier or source follower having an input coupled to a second node, and an output for generating an analog signal, wherein the MEMS device output and the programmable gain amplifier or source follower input comprise a first nonlinear equivalent capacitance having a first capacitance-to-voltage (CV) profile; and a nonlinear capacitance component coupled to the first node, the second node, and at least one reference voltage node, wherein the nonlinear capacitance component comprises a second nonlinear equivalent capacitance having a second CV profile.
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公开(公告)号：US20230369862A1
公开(公告)日：2023-11-16
申请号：US18358822
申请日：2023-07-25
申请人： E2 IP HOLDING LLC
发明人： James Richmond , Scott Gall , Timothy Richmond
CPC分类号： H02J3/32 , H02J3/0012 , H02J3/01
摘要： A method for conditioning and maintaining power transmitted to a customer load from a primary or secondary power supply is disclosed. The method includes receiving a first input from the power supply, converting the first input using a converter, and continuously adjusting at least one converter power parameter to satisfy at least one inverter power parameter. The method determines whether the first output transmitted from the converter to an inverter satisfies the at least one inverter power parameter. If the output satisfies the inverter power parameter, then power is supplied to the customer load without charging or discharging a high discharge battery stack. The method also includes monitoring primary power supply parameters and switching to the secondary power supply if the primary power supply parameter fails to satisfy the respective primary power supply parameter threshold.
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公开(公告)号：US20230361566A1
公开(公告)日：2023-11-09
申请号：US18352008
申请日：2023-07-13
摘要： Systems and methods are described for active harmonics cancellation. A wireless charging apparatus includes a wireless-power transfer circuit comprising a wireless-power transfer coil configured to generate or couple to a magnetic field to transfer or receive power and a plurality of tuning capacitors electrically coupled to the wireless-power transfer coil. The apparatus also includes a power converter circuit electrically coupled to the wireless-power transfer circuit. Additionally, the apparatus includes a signal generation circuit different from the power converter circuit and electrically coupled to one or more nodes between capacitors of the plurality of tuning capacitors. The signal generation circuit is configured to generate and inject a signal into the wireless-power transfer circuit at the nodes between the capacitors. The signal generation circuit includes a rejection filter tuned to an operating frequency of the wireless-power transfer coil.
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公开(公告)号：US20230358455A1
公开(公告)日：2023-11-09
申请号：US18026184
申请日：2021-09-21
发明人： Masaki KOUNO , Reiji KAWASHIMA , Toshiyuki MAEDA , Keisuke OHTA
CPC分类号： F25B49/02 , H02J3/22 , H02J3/01 , H02J3/16 , H02J13/00007 , F25B2600/024 , F25B2700/21 , F25B2700/02
摘要： [Object] On the basis of a limit of an operation of a control unit that is connected to a power-receiving path of a converting unit, is electrically parallel with the converting unit, and controls apparent power in the power-receiving path of the converting unit, the operation of the control unit is controlled.
[Solution] A power control system includes: an acquisition section that acquires control unit information related to a limit of an operation by a control unit provided for a heat pump system that regulates temperature and/or humidity; and a control section that controls an operation of the control unit on the basis of the control unit information. The control unit is connected to a power-receiving path of a converting unit that converts received power and supplies the converted power to a load used for the regulating. The control unit is electrically parallel with the converting unit. The control unit controls apparent power in the power-receiving path.-
公开(公告)号：US20230291230A1
公开(公告)日：2023-09-14
申请号：US18197550
申请日：2023-05-15
申请人： Gridbridge, Inc
IPC分类号： H02J13/00 , G06Q50/06 , H02J3/14 , H02J3/38 , H02J3/01 , H02J3/18 , H02M1/42 , H02J3/02 , G05B15/02
CPC分类号： H02J13/00017 , G05B15/02 , G06Q50/06 , H02J3/01 , H02J3/02 , H02J3/14 , H02J3/18 , H02J3/38 , H02J3/381 , H02J13/00004 , H02J13/00007 , H02J13/00028 , H02J13/00034 , H02M1/42 , H02J3/44 , H02J2300/20 , H02J2310/14 , H02J2310/64 , Y02B70/30 , Y02B70/3225 , Y02E40/70 , Y04S10/123 , Y04S20/221 , Y04S20/222 , Y04S20/242
摘要： An electrical distribution grid energy management and router device, or GER device, may be installed in a distribution grid, and route power from power supply to one or more power consumers. The GER devices described herein may provide platforms to add one or more features to a distribution transformer, provide additional features and benefits to both the utility company and end consumer, and may serve as a platform for providing other features, such as multi-layer protection systems for detecting, among other things, one or more fault conditions, and responding to such conditions when detected. A GER device may include sensors to measure electrical properties of incoming and outgoing power, and may include an electrical circuit layer having a central DC power stage.
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