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公开(公告)号：US20230068452A1
公开(公告)日：2023-03-02
申请号：US17886305
申请日：2022-08-11
Applicant: Delta Electronics, Inc.
Inventor： Jun Chen , Tsu-Hua Ai , Changyong Wang , Yansong Lu , Jun Liu
Abstract: A power conversion system is coupled between a power grid and a load. The power conversion system includes a battery, a first converter, a second converter and a DC/DC converter. The first converter is configured to selectively convert an input power from the power grid into a first charging power when the power grid is operated normally. The second converter is configured to convert the input power from the power grid into an output power when the power grid is operated normally. The DC/DC converter is electrically connected between the battery and the second converter. The DC/DC converter is configured to convert a storage power in the battery into a backup power when the power grid is not operated normally.
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公开(公告)号：US11545836B2
公开(公告)日：2023-01-03
申请号：US17535284
申请日：2021-11-24
Applicant: Delta Electronics, Inc.
Inventor： Changyong Wang , Yangyang She , Li Chen
Abstract: A photovoltaic energy storage system includes an energy storage device, an inverter, a photovoltaic array device, a DC/DC conversion device and a controller. When an output voltage of the photovoltaic array device is greater than or equal to a predetermined threshold value, the photovoltaic energy storage system is operated in a first working mode. When the output voltage of the photovoltaic array device is lower than the predetermined threshold value, the photovoltaic energy storage system is operated in a second working mode. The DC/DC conversion device includes a bypass switch and a DC/DC converter. When the photovoltaic energy storage system is operated in the second working mode, the bypass switch is turned on and the DC/DC converter is disabled. Consequently, the electric power of the energy storage device is transmitted to the inverter through the bypass switch.
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Patent Agency Ranking
公开(公告)号：US09680306B2
公开(公告)日：2017-06-13
申请号：US14972667
申请日：2015-12-17
Applicant: DELTA ELECTRONICS,INC
Inventor： Haifen Xue , Li Chen , Fei Lu , Changyong Wang
CPC classification number: H02J3/386 , Y02E10/725 , Y02E10/763
Abstract: A wind power generation control device, coupled between a wind power generator and a power grid, includes a converter unit and a switching unit. The converter unit includes a generator-side converter, a DC bus capacitor and a grid-side converter, wherein an AC-side of the generator-side converter is coupled to a rotor-side of the wind power generator, a DC-side of the generator-side converter is coupled to the DC bus capacitor, a DC-side of the grid-side converter is coupled to the DC bus capacitor, and an AC-side of the grid-side converter is coupled to the power grid. The switching unit is configured to switch the wind power generation control device between the doubly-fed power generation operating mode and the full-power operating mode according to a wind speed. A wind power generation system uses the wind power generation control device.
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公开(公告)号：US12009695B2
公开(公告)日：2024-06-11
申请号：US17886305
申请日：2022-08-11
Applicant: Delta Electronics, Inc.
Inventor： Jun Chen , Tsu-Hua Ai , Changyong Wang , Yansong Lu , Jun Liu
CPC classification number: H02J9/062 , H02J7/0048 , H02J7/00712 , H02J7/04
Abstract: A power conversion system is coupled between a power grid and a load. The power conversion system includes a battery, a first converter, a second converter and a DC/DC converter. The first converter is configured to selectively convert an input power from the power grid into a first charging power when the power grid is operated normally. The second converter is configured to convert the input power from the power grid into an output power when the power grid is operated normally. The DC/DC converter is electrically connected between the battery and the second converter. The DC/DC converter is configured to convert a storage power in the battery into a backup power when the power grid is not operated normally.
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公开(公告)号：US20220294226A1
公开(公告)日：2022-09-15
申请号：US17535284
申请日：2021-11-24
Applicant: Delta Electronics, Inc.
Inventor： Changyong Wang , Yangyang She , Li Chen
Abstract: A photovoltaic energy storage system includes an energy storage device, an inverter, a photovoltaic array device, a DC/DC conversion device and a controller. When an output voltage of the photovoltaic array device is greater than or equal to a predetermined threshold value, the photovoltaic energy storage system is operated in a first working mode. When the output voltage of the photovoltaic array device is lower than the predetermined threshold value, the photovoltaic energy storage system is operated in a second working mode. The DC/DC conversion device includes a bypass switch and a DC/DC converter. When the photovoltaic energy storage system is operated in the second working mode, the bypass switch is turned on and the DC/DC converter is disabled. Consequently, the electric power of the energy storage device is transmitted to the inverter through the bypass switch.
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6.发明授权公开(公告)号：US09722505B2
公开(公告)日：2017-08-01
申请号：US14941122
申请日：2015-11-13
Applicant: DELTA ELECTRONICS, INC.
Inventor： Changyong Wang , Li Cai , Yansong Lu , Fei Lu
CPC classification number: H02M5/458 , H02J3/386 , H02M1/32 , H02M5/4585 , H02M7/25 , H02M7/49 , H02M2001/0032 , H02M2001/0074 , Y02B70/16 , Y02E10/763
Abstract: A wind power conversion system includes plural first converting circuits and a second converting circuit. The plural first converting circuits perform a power converting task, and include respective first generator-side terminals and respective first network-side terminals. The first generator-side terminals are electrically connected with a wind power generator. The first network-side terminals are electrically connected with corresponding secondary windings of an isolating transformer. The second converting circuit includes plural second generator-side terminals and a second network-side terminal. The second network-side terminal is electrically connected with the corresponding secondary winding of plural secondary windings of the isolating transformer. The second generator-side terminals are serially connected with the corresponding first generator-side terminals of the first converting circuits. When the second converting circuit is enabled, the power converting task of the plural first converting circuits is shared by the second converting circuit.
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公开(公告)号：US20160211763A1
公开(公告)日：2016-07-21
申请号：US14941122
申请日：2015-11-13
Applicant: DELTA ELECTRONICS, INC.
Inventor： Changyong Wang , Li Cai , Yansong Lu , Fei Lu
IPC: H02M5/458
CPC classification number: H02M5/458 , H02J3/386 , H02M1/32 , H02M5/4585 , H02M7/25 , H02M7/49 , H02M2001/0032 , H02M2001/0074 , Y02B70/16 , Y02E10/763
Abstract: A wind power conversion system includes plural first converting circuits and a second converting circuit. The plural first converting circuits perform a power converting task, and include respective first generator-side terminals and respective first network-side terminals. The first generator-side terminals are electrically connected with a wind power generator. The first network-side terminals are electrically connected with corresponding secondary windings of an isolating transformer. The second converting circuit includes plural second generator-side terminals and a second network-side terminal. The second network-side terminal is electrically connected with the corresponding secondary winding of plural secondary windings of the isolating transformer. The second generator-side terminals are serially connected with the corresponding first generator-side terminals of the first converting circuits. When the second converting circuit is enabled, the power converting task of the plural first converting circuits is shared by the second converting circuit.
Abstract translation: 风力转换系统包括多个第一转换电路和第二转换电路。 多个第一转换电路执行电力转换任务，并且包括各自的第一发电机侧端子和各个第一网络侧端子。 第一发电机侧端子与风力发电机电连接。 第一网侧端子与隔离变压器的相应次级绕组电连接。 第二转换电路包括多个第二发生器侧端子和第二网络侧端子。 第二网侧端子与隔离变压器的多个次级绕组的对应次级绕组电连接。 第二发生器侧端子与第一转换电路的对应的第一发生器侧端子串联连接。 当第二转换电路被使能时，多个第一转换电路的功率转换任务由第二转换电路共享。
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