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公开(公告)号：US20230378795A1
公开(公告)日：2023-11-23
申请号：US17663977
申请日：2022-05-18
CPC分类号： H02J7/007182 , H02M3/04 , H02M7/68 , H02M1/4208 , H02M1/0085 , B60L53/16
摘要： A system for a direct current (DC) to DC converter, the system comprising one or more transformers, a bridge driver connected to a primary side of the one or more transformers, a first bridge rectifier connected to a secondary side of the one or more transformers, a second bridge rectifier connected to a secondary side of the one or more transformers, and one or more secondary configuration switches operable to configure the first bridge rectifier and the second bridge rectifier into each of a single rectifier configuration, a parallel rectifier configuration, and a series rectifier configuration.
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公开(公告)号：US11801764B2
公开(公告)日：2023-10-31
申请号：US17635620
申请日：2020-08-13
申请人： BYD COMPANY LIMITED
发明人： Yubo Lian , Heping Ling , Jicheng Li , Hua Pan , Feiyue Xie
摘要： The present invention relates to the technical field of vehicles, and provides an energy conversion device and a vehicle. The energy conversion device includes a reversible pulse-width modulation (PWM) rectifier, a motor coil connected with the reversible PWM rectifier, a one-way conduction module, and a capacitor. A DC charging circuit or a DC discharging circuit is formed by an external DC port with an external battery by using the energy conversion device, and a driving circuit is formed by the external battery with the reversible PWM rectifier and the motor coil in the energy conversion device. The one-way conduction module is connected between a first end of the capacitor and a second end of the external DC port, or the one-way conduction module is connected between a second end of the capacitor and a first end of the external DC port.
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公开(公告)号：US11031807B2
公开(公告)日：2021-06-08
申请号：US16313698
申请日：2017-06-07
发明人： Tetsuo Akita , Naoki Ayai
IPC分类号： H04Q9/08 , H02J3/14 , H02J9/06 , H02J3/38 , H02J7/35 , H01M10/48 , H01M10/42 , H01M10/44 , H02J7/02 , H02M7/68
摘要： This power supply device includes: a power interconnection path connecting a power interconnection port to a power conversion unit via a first switch; a stand-alone power supply path leading from an auxiliary input port via a second switch to an output port to which a load is connected; a storage-battery-side power supply path leading from a storage battery via the power conversion unit to the output port; and a control unit, the control unit causing the power conversion unit to charge/discharge the storage battery when interconnected with a commercial power grid, the control unit supplying power to the load via one of the stand-alone power supply path and the storage-battery-side power supply path when disconnected from the commercial power grid, the control unit switching the power supply path from the one to the other within an extremely short time period such as not to influence the load.
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公开(公告)号：US10348087B2
公开(公告)日：2019-07-09
申请号：US15306476
申请日：2015-04-24
申请人： KYOCERA CORPORATION
发明人： Issei Suzuki
摘要： The control method, for a storage battery 100 provided in a consumer site receiving electric power supply from a system 104, includes: a first monitoring step of monitoring a first electric energy supplied from the system 104 per unit time period, where the unit time period is shorter than a predetermined time limit; a second monitoring step of monitoring a second electric energy supplied from the system 104 per predetermined time limit; a calculation step of obtaining a change over time in the first electric energy; and an instruction step of instructing the storage battery to discharge electric power to supply a load 108 located in the consumer site in accordance with the change over time in the first electric energy and with a peak value in the past pertaining to the second electric energy.
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公开(公告)号：US20180241213A1
公开(公告)日：2018-08-23
申请号：US15753708
申请日：2016-08-18
CPC分类号： H02J3/36 , H02H3/021 , H02H3/087 , H02H7/22 , H02H7/268 , H02J3/18 , H02J3/1857 , H02M1/32 , H02M7/68 , H02M2007/4835 , Y02E40/26 , Y02E60/60
摘要： There is provided an electrical assembly for use in a power transmission network. The electrical assembly includes a converter including terminals for connection to an electrical network, where the first terminal is a DC terminal. The assembly also includes a DC power transmission medium connected to the DC terminal, and a circuit interruption device including switching element(s) and an energy absorption element, each switching element being switchable to divert a flow of current in the DC power transmission medium through the energy absorption element in order to reduce the flow of current in the DC power transmission medium; The assembly also includes a converter control unit programmed to operate the converter to control a DC voltage at the DC terminal in a leakage current reduction mode to control a voltage across the energy absorption element.
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公开(公告)号：US10003253B2
公开(公告)日：2018-06-19
申请号：US15570378
申请日：2015-07-21
发明人： Guiping Du , Zhifei Liu , Tiansheng Zhu
CPC分类号： H02M1/4216 , H02M7/219 , H02M2001/4283 , Y02B70/126 , Y02P80/112
摘要： The present invention discloses a hybrid transformation system based on three-phase voltage type PWM rectifier and multi-unit uncontrolled rectifier. The hybrid transformation system mainly consists of a three-phase reactor (L), a three-phase voltage type PWM rectifier module, an N-unit three-phase uncontrolled rectifier bridge module group, capacitors (C0-CN) and a DSP control circuit. An input end of the three-phase voltage type PWM rectifier module is in parallel connection with an input end of each three-phase uncontrolled rectifier bridge module. The three-phase voltage type PWM rectifier module may work in to situations, with load or without load, and the three-phase voltage type PWM rectifier module just does reactive power compensation when working without load. All modules of the three-phase uncontrolled rectifier bridge module group may work in to situations, with loads independently or all the outputs are in parallel connection and with a same load. The hybrid rectifier system has advantages such as unity input power factor, grid side current low harmonic, high power output, low cost, easy control, and etc.
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公开(公告)号：US09917473B2
公开(公告)日：2018-03-13
申请号：US14771259
申请日：2014-02-28
申请人： NEC Corporation
发明人： Toshiya Okabe
摘要： A power system 10 is provided with a power conversion device 110 connected to an input power supply 200, a battery 120 and a load 130 connected in parallel with each other to the output side of the power conversion device 110, and a control device 140 controlling charging/discharging of the battery 120, wherein the control device 140 receives output power of the power conversion device 110, determines, based on the received output power, charge or discharge power of the battery 120 such that the output power becomes close to a first value, and charges or discharges the battery 120 based on the determined charge or discharge power.
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公开(公告)号：US09887547B2
公开(公告)日：2018-02-06
申请号：US15360983
申请日：2016-11-23
发明人： Jinjun Liu , Baojin Liu , Zeng Liu , Teng Wu , Shike Wang
CPC分类号： H02J3/18 , H02M7/42 , H02M7/537 , H02M2001/0093 , Y02E40/30
摘要： A method and an apparatus for decoupling output power of an inverter are provided. The method comprises: obtaining voltage amplitude instruction E* and voltage phase instruction θ* according to an output voltage and an output current of the inverter; obtaining an amplitude feedforward amount Eff and a phase feedforward amount δff according to an amplitude U of a grid voltage of the power grid, an amplitude E of the output voltage of the inverter, and a phase difference δ between the output voltage of the inverter[0] and the grid voltage; obtaining a reference voltage amplitude Eref according to the voltage amplitude instruction E* and the amplitude feedforward amount Eff, and obtaining a reference voltage phase θref according to the voltage phase instruction θ* and the phase feedforward amount δff; and regulating the output power of the inverter using the reference voltage amplitude Eref and the reference voltage phase θref.
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公开(公告)号：US09853455B1
公开(公告)日：2017-12-26
申请号：US14986236
申请日：2015-12-31
申请人： X Development LLC
发明人： Leo Francis Casey , Geoff Dolan
摘要： A power distribution system includes a bidirectional power converter, a battery, and a controller. The bidirectional power converter is operable to (i) convert AC power received at AC terminals to DC power at DC terminals and (ii) convert DC power received at the DC terminals to AC power at the AC terminals. The bidirectional power converter is disposed within a converter stack formed by a plurality of power converters having DC terminals that are coupled to each other in series. The battery is arranged to be selectively couplable to the DC terminals of the bidirectional power converter. The controller is configured to (i) determine that the DC voltage across the DC terminals of the bidirectional power converter is below a threshold voltage and (ii) couple the battery to the DC terminals of the bidirectional power converter based on the determination that the DC voltage is below the threshold voltage.
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公开(公告)号：US09847648B2
公开(公告)日：2017-12-19
申请号：US15394400
申请日：2016-12-29
申请人： The AES Corporation
发明人： John Christopher Shelton , Jay Craig Geinzer , Brett Lance Galura , Steven Christianne Gerard Meersman
IPC分类号： G05D3/12 , G05D5/00 , G05D9/00 , G05D11/00 , G05D17/00 , H02J1/00 , H02J3/00 , H02J7/00 , H02J7/14 , H01M10/44 , H01M10/46 , H02J3/38 , H02M7/68 , H02M7/04 , H02M7/44
CPC分类号： H02J3/383 , H02J3/381 , H02J3/382 , H02J3/386 , H02J7/0068 , H02J7/34 , H02M7/04 , H02M7/44 , H02M7/68 , Y02E10/563 , Y02E10/763 , Y10T307/718
摘要： Approaches for controlling power supplied to an electric grid are disclosed. In embodiments, methods and systems control power supplied to an electric grid using an energy storage device. In an embodiment, a method receives an indication of power to be supplied to the electric grid, generates power from a power generator and adjusts, using the generated power, an energy level of the energy storage device to control power supplied to the grid in accordance with the received indication. In another embodiment, a system comprises a grid indication receiver for receiving an indication of power to be supplied to the electric grid; a power generator connected to the grid; an energy storage device coupled to the power generator; and a controller for adjusting, using the generated power from the generator, an energy level of the energy storage device to control power supplied to the grid in accordance with the received indication.
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