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1. 发明授权

US11476775B2 Method for controlling a converter 有权
公开(公告)号：US11476775B2
公开(公告)日：2022-10-18
申请号：US17354485
申请日：2021-06-22
申请人： Wobben Properties GmbH
发明人： Albrecht Gensior
IPC分类号： H02M5/42 , H02M5/44 , H02M5/458 , H02M7/493 , F03D9/25 , H02M1/00 , H02J3/38 , H02M7/5387
摘要： The present disclosure relates to a method for controlling a converter, in particular power converter of a wind power installation. The converter has a plurality of, preferably parallel, converter modules. The method includes the following steps: driving a first converter module, such that the converter module generates a first electrical AC current in a first switch position, driving a second converter module, such that the converter module generates a second electrical AC current in a second switch position, superposing the first electrical AC current and the second electrical AC current to form a total current, detecting the total current of the converter, determining a virtual current depending on the first and second switch positions, and changing the first switch position of the first converter module and/or the second switch position of the second converter module depending on the total current and the virtual current.

2. 发明申请

US20220302747A1 METHOD TO DETECT BACK-FEED AND MIS-WIRING EVENTS BY A UPS SYSTEM 有权
公开(公告)号：US20220302747A1
公开(公告)日：2022-09-22
申请号：US17655474
申请日：2022-03-18
申请人： SCHNEIDER ELECTRIC IT CORPORATION
发明人： Kenneth A. Colby, JR. , Wei-Hsiang Lin , Venkatraman Chennakesavan , Eyob Demissie , Luka Petrovic , Himamshu V Prasad , Yu Zhang
IPC分类号： H02J9/06 , H02M5/42 , H01H47/00
摘要： Power supplies and methods of use thereof are provided, where a power supply includes an input configured to receive input AC power an output configured to provide output AC power to a load, at least one power converter coupled to the input and configured to convert the input AC power into the output AC power, a controller coupled the at least one power converter. The controller is configured to adjust at least one parameter of the output AC power provided by the at least one power converter, detect, in response to adjusting the at least one parameter of the output AC power, at least one of an adjusted input AC power or an adjusted output AC power, and determine that a fault has occurred based on the at least one of the adjusted input AC power or the adjusted output AC power.

3. 发明授权

US11362596B2 System and method for operating a system 有权
公开(公告)号：US11362596B2
公开(公告)日：2022-06-14
申请号：US17194764
申请日：2021-03-08
申请人： SEW-EURODRIVE GMBH & CO. KG
发明人： Josef Schmidt , Matthias Hauck , Jochen Weber
IPC分类号： H02M5/42 , H02M7/00 , H02M5/458 , H02J7/00 , H02P21/22 , H02M3/335 , H02P27/08 , H02M3/158 , H02M1/00
摘要： In a system and method for operating a system having a rectifier which is suppliable from an electric AC-voltage supply network, an inverter which feeds an electric motor, and a DC/DC converter which is connected to an energy accumulator, the DC-voltage side connection of the inverter is connected to the DC-voltage side connection of the rectifier, in particular, the electric motor is supplied from the AC-voltage side connection of the inverter, a first DC-voltage side connection of the DC/DC converter is connected to the DC-voltage side connection of the rectifier, in particular, the DC-voltage side connection of the inverter and the first DC-voltage side connection of the DC/DC converter are connected in parallel, the DC/DC converter has a housing in which a device for current acquisition is situated, which acquires either the current, in particular network phase currents, flowing into the rectifier at the AC-voltage side connection of the rectifier, or the current emerging from the rectifier at the DC-voltage side connection of the rectifier, and the acquired value is forwarded to a signal electronics situated in the housing of the DC/DC converter, which generates control signals for semiconductor switches of the DC/DC converter.

4. 发明授权

US11303149B2 Short-circuit current capacity enhancement 有权
公开(公告)号：US11303149B2
公开(公告)日：2022-04-12
申请号：US16780513
申请日：2020-02-03
申请人： SCHNEIDER ELECTRIC IT CORPORATION
发明人： Daniel Gonzalez
IPC分类号： H02J9/06 , H02M5/42
摘要： Systems, methods, and computer-readable mediums include detecting and eliminating a three-phase without neutral short-circuit in a load supplied by a power converter. After detecting the short circuit, the current at an output conductor for one of the three-phases is stopped and then resumed after a sufficient amount of current causes a downstream protection device of the faulty load to trip.

5. 发明授权

US11251722B2 Converter scheme 有权
公开(公告)号：US11251722B2
公开(公告)日：2022-02-15
申请号：US16754010
申请日：2018-10-05
申请人： GENERAL ELECTRIC TECHNOLOGY GMBH
发明人： Radnya Anant Mukhedkar , Gearoid Sean O'Heidhin , Amit Kumar
IPC分类号： H02J3/36 , H02M5/42 , H02M7/757
摘要： A converter scheme (30) comprises a plurality of poles and a plurality of converters (32), the plurality of poles (60,62,64) including at least one positive pole (60), at least one negative pole (62) and a neutral pole (64), the plurality of converters (32) including at least one first converter (32a) and at least one second converter (32b), the or each first converter (32a) connected to the neutral pole (64) and the or the respective positive pole (60), the or each first converter (32a) operable to control a converter voltage across the neutral pole (64) and the corresponding positive pole (60), the or each second converter (32b) connected to the neutral pole (64) and the or the respective negative pole (62), the or each second converter (32b) operable to control a converter voltage across the neutral pole (64) and the corresponding negative pole (62), wherein the converter scheme (30) includes a controller (36) programmed to perform a voltage control mode when there is an imbalance between power or current levels of the positive and negative poles (60,62) and when the neutral pole (64) is at a non-zero potential, the controller (36) programmed to perform the voltage control mode to operate each converter (32a,32b) to control the corresponding converter voltage so that a pole-to-ground voltage of the corresponding positive or negative pole (60,62) is equal to or lower than a voltage rating of the corresponding positive or negative pole (60,62).

6. 发明申请

US20210391724A1 THREE-PHASE POWER SUPPLY SYSTEM AND POWER SUPPLY METHOD 有权
公开(公告)号：US20210391724A1
公开(公告)日：2021-12-16
申请号：US17334830
申请日：2021-05-31
申请人： Delta Electronics (Shanghai) Co., Ltd.
发明人： Tao XIA , Hong LIU , Cheng LU , SHENG-HUA LI
IPC分类号： H02J3/26 , H02J3/18 , H02M5/42 , H02J13/00 , H02M1/42 , H02J3/38
摘要： 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.

7. 发明授权

US11038368B2 Method of controlling power supply of caravan and power control device of caravan 有权
公开(公告)号：US11038368B2
公开(公告)日：2021-06-15
申请号：US16726766
申请日：2019-12-24
申请人： Shenzhen Hello Tech Energy Co., LTD.
发明人： Zhongwei Sun , Shiji Wu , Zhiyuan Zhong , Xuhe Liu
IPC分类号： H02J1/00 , H02M5/42 , H02M7/04 , H02J7/35 , B60R16/033 , H02J4/00 , H02J7/00
摘要： A method of controlling power supply of a caravan including a photovoltaic plate includes: receiving a first power parameter of an input interface element; determining whether there is a mains supply to be input into the input interface element according to the first power parameter; turning on a first switch to make the input interface element be electrically connected to the output interface element if the mains supply is input into the input interface element; receiving a power parameter of a battery pack if the mains supply is not input into the input interface element; determining whether a remaining power of the battery pack exceeds a power threshold according to the power parameter of the battery pack; and making the battery pack be electrically connected to an output interface element if the remaining power of the battery pack exceeds the power threshold.

8. 发明授权

US10959359B2 Power conversion device 有权
公开(公告)号：US10959359B2
公开(公告)日：2021-03-23
申请号：US16624004
申请日：2017-06-30
申请人： TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
发明人： Shigeyuki Nakabayashi , Hitoshi Sadakuni , Shotaro Murakami , Ikuto Udagawa
IPC分类号： H05K5/00 , H05K9/00 , H01B17/56 , H02M5/42 , H05K7/02
摘要： A power conversion device includes a first stage, a second stage, a first electric field relaxation shield unit, a second electric field relaxation shield unit, and a plurality of stage posts. The first electric field relaxation shield unit is arranged to surround outer periphery of the first stage. The second electric field relaxation shield unit is arranged to surround outer periphery of the second stage. The plurality of stage posts connect the first stage and the second stage. The plurality of stage posts have outer peripheral surfaces formed of insulating bodies. Power conversion units loaded on the first stage are arranged inside a columnar region which includes at least some of the plurality of stage posts as sides.

9. 发明申请

US20210046825A1 AC ELECTRIC ROLLING STOCK CONTROLLER 有权
公开(公告)号：US20210046825A1
公开(公告)日：2021-02-18
申请号：US16966912
申请日：2018-02-08
申请人： Mitsubishi Electric Corporation
发明人： Jungo Rikitake , Katsuya Nishikawa
IPC分类号： B60L9/16 , H03K5/24 , H02M5/42
摘要： An AC electric rolling stock controller includes a comparator that compares an intermediate link voltage VEFC generated at a smoothing capacitor with a setting value A, a comparator that compares the intermediate link voltage VEFC with a setting value B less than the setting value A, and a delayer that delays an output of the comparator in a case in which the output of the comparator is significant. It is determined that the initial charging of the smoothing capacitor is complete in a case in which at least one of an output of the comparator and an output of the delayer is significant.

10. 发明授权

US10742035B2 Electrical power distribution network and process 有权
公开(公告)号：US10742035B2
公开(公告)日：2020-08-11
申请号：US16309405
申请日：2017-09-14
申请人： THIRD EQUATION LTD
发明人： Matthew Williams , Andrew Scobie
IPC分类号： H02J3/01 , H02J3/28 , H01F29/14 , H02J3/18 , H02M5/10 , H02M5/27 , G05F1/335 , H02J1/14 , H02M5/16 , H02M5/04 , G05F1/325 , G05F1/33 , H01F38/04 , H02M5/451 , H02M5/297 , H02M5/42
摘要： An electrical power distribution network is disclosed, the network can include: a plurality of electrical power control apparatuses, each of the electrical power control apparatuses including: one or more signal conversion components receiving electrical power in the form of a corresponding first signal having a corresponding first fundamental frequency and a corresponding first characteristic voltage, and generating a corresponding second signal having a corresponding second fundamental frequency and a corresponding second characteristic voltage; and a controller that controls operation of the signal conversion components to determine an output voltage and an output frequency of an output signal of the electrical power control apparatus; electrical power generation components acting as sources of electrical power to at least some of the electrical power control apparatuses; and electrical power consumption components acting as sinks of electrical power from at least some of the electrical power control apparatuses.

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