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1. 发明申请

US20230137190A1 POWER CONTROL DEVICE 有权
公开(公告)号：US20230137190A1
公开(公告)日：2023-05-04
申请号：US18091507
申请日：2022-12-30
申请人： Rohm Co., Ltd.
发明人： Kenichi OKAJIMA
IPC分类号： H02H7/12 , H02H1/00 , G05F1/595 , H02M1/088 , G05F1/575 , G05F1/571 , H02M3/158 , H02H3/20 , H02M1/36
摘要： A power control device includes: an output voltage controller configured to control an output voltage based on a feedback voltage corresponding to the output voltage; and an overvoltage protector configured to continue or stop the operation of the output voltage controller based on a first detection result of whether the output voltage has exceeded an output voltage threshold value and a second detection result of whether the feedback voltage has fallen to or below a feedback voltage threshold value.

2. 发明授权

US11616451B2 Pre-chargeable DCDC conversion circuit 有权
公开(公告)号：US11616451B2
公开(公告)日：2023-03-28
申请号：US17203894
申请日：2021-03-17
申请人： Shenzhen Vmax New Energy Co., Ltd.
发明人： Jun Liu , Yingying Feng , Shun Yao , Changsheng Zhang
IPC分类号： H02M3/337 , H02M3/335 , H02M1/36
摘要： A pre-chargeable DCDC conversion circuit includes a high-voltage side conversion module connected to a primary winding of a main transformer T1, a low-voltage side conversion module connected to a secondary winding of the main transformer, and a controller used for controlling the high-voltage side conversion module and the low-voltage side conversion module. A pre-charging module is connected in series in a direct-current bus of the low-voltage side conversion module, and the pre-charging module is used for pre-charging a capacitor of electric equipment connected to a direct-current bus of the high-voltage side conversion module when the complete machine is powered on. The pre-charging module and a forward DCDC share most of power devices and power loops, and only a small number of devices are added, such that the volume and cost are reduced compared with an independent pre-charging branch, and the control mode is simple.

3. 发明申请

US20230087677A1 EXERCISE MAT WITH YOGA TOWEL ASSEMBLY 有权
公开(公告)号：US20230087677A1
公开(公告)日：2023-03-23
申请号：US17799651
申请日：2021-02-08
申请人： Rohit Chhabra
发明人： Rohit Chhabra
IPC分类号： H02M1/36 , H02M1/08 , H02M7/5387 , H02M3/00 , H02M3/335
摘要： An assembly, in one embodiment, compromising an exercise mat having a top layer and a bottom layer, and a towel is described. The top layer of the exercise mat is configured to have a first exposed surface. The towel comprises a first surface and second surface, the first surface configured to be coupled to the first exposed surface of the top layer of the exercise mat, the surface area of the towel being less than or equal to a surface area of the top surface of the exercise mat.

4. 发明授权

US11605958B2 Electric vehicle charging method for preventing inrush current and device for the same 有权
公开(公告)号：US11605958B2
公开(公告)日：2023-03-14
申请号：US17536949
申请日：2021-11-29
申请人： SK Signet Inc.
发明人： Ho Chul Hwang , Chung Youl Lee , Ho Byung Chae , Kyung Se Moon , Jae Uk Ham
IPC分类号： H02J7/00 , H01M10/44 , H02M1/36
摘要： A method for preventing an inrush current of an electric vehicle charger may include the steps of determining whether there is a need for an increase or decrease in a charging current level while currently supplied to an electric vehicle to be charged; decreasing the charging current level at a predetermined ratio when it is determined that there is the need for the increase or decrease in the charging current level; checking whether an inrush current occurs for a first time; activating or deactivating at least one charging module to increase or decrease the charging current level according to the request of the electric vehicle to be charged, when the inrush current does not occur for the first time; checking whether the inrush current occurs for a second time; and increasing the charging current level by the charging current level requested by the electric vehicle to be charged, when the inrush current does not occur for the second time.

5. 发明申请

US20230071413A1 POWER CONVERSION DEVICE 有权
公开(公告)号：US20230071413A1
公开(公告)日：2023-03-09
申请号：US17760330
申请日：2021-02-01
申请人： TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
发明人： Mohammad BANI SHAMSEH
IPC分类号： H02M1/36 , H02M7/53
摘要： A power conversion device according to one embodiment has an inverter that converts direct-current power supplied from a direct-current power source to alternating-current power, a determination unit that determines whether or not a negative-phase sequence voltage on an alternating-current side of the inverter is a predetermined value or greater, and a stop control unit that performs control to stop the inverter in a case where the determination unit determines that the negative-phase sequence voltage is the predetermined value or greater. Further, the stop control unit may perform control to stop the inverter in a case where a positive-phase sequence voltage on the alternating-current side of the inverter is within a predetermined range.

6. 发明申请

US20230050918A1 III-V SEMICONDUCTOR DEVICE WITH INTEGRATED POWER TRANSISTOR AND START-UP CIRCUIT 有权
公开(公告)号：US20230050918A1
公开(公告)日：2023-02-16
申请号：US17977290
申请日：2022-10-31
申请人： Cambridge GaN Devices Limited
发明人： Florin UDREA , Loizos EFTHYMIOU
IPC分类号： H01L27/095 , H03K17/687 , H02M3/335 , H02M1/36 , H01L29/20 , H01L29/205 , H01L29/778 , H01L21/8252 , H01L29/66
摘要： We disclose a III-nitride semiconductor based heterojunction power device comprising: a first heterojunction transistor formed on a substrate, the first heterojunction transistor comprising: a first III-nitride semiconductor region formed over the substrate, wherein the first III-nitride semiconductor region comprises a first heterojunction comprising at least one two dimensional carrier gas; a first terminal operatively connected to the first III-nitride semiconductor region; a second terminal laterally spaced from the first terminal and operatively connected to the first III-nitride semiconductor region; a first plurality of highly doped semiconductor regions of a first polarity formed over the first III-nitride semiconductor region, the first plurality of highly doped semiconductor regions being formed between the first terminal and the second terminal; a first gate region operatively connected to the first plurality of highly doped semiconductor regions; and a second heterojunction transistor formed on the substrate. The second heterojunction transistor comprises: a second III-nitride semiconductor region formed over the substrate, wherein the second III-nitride semiconductor region comprises a second heterojunction comprising at least one two dimensional carrier gas; a third terminal operatively connected to the second III-nitride semiconductor region; a fourth terminal laterally spaced from the third terminal in the first dimension and operatively connected to the second III-nitride semiconductor region; a second gate region being formed over the second III-nitride semiconductor region, and between the third terminal and the fourth terminal. One of the first and second heterojunction transistors is an enhancement mode field effect transistor and the other of the first and second heterojunction transistors is a depletion mode field effect transistor.

7. 发明授权

US11569727B2 Drive circuit and power conversion device 有权
公开(公告)号：US11569727B2
公开(公告)日：2023-01-31
申请号：US17054786
申请日：2019-07-16
申请人： Mitsubishi Electric Corporation
发明人： Yuki Ishii
IPC分类号： H02M1/08 , H02M1/36 , H02M7/483
摘要： A current path to a gate is cut off by a normally-off first switch element until start-up of a gate drive voltage generator is sensed. Furthermore, a semiconductor switching element is maintained in an off state as a normally-on second switch element short-circuits the gate to a source. As start-up of the gate drive voltage generator is sensed, the second switch element is turned off and the first switch element is turned on. As the gate is thus driven by an output from a signal amplifier in accordance with a control signal, the semiconductor switching element is turned on and off in accordance with the control signal.

8. 发明申请

US20230023908A1 CIRCUIT ASSEMBLY FOR CONNECTING TO A CURRENT SOURCE 有权
公开(公告)号：US20230023908A1
公开(公告)日：2023-01-26
申请号：US17757369
申请日：2020-11-20
申请人： Endress+Hauser SE+Co. KG
发明人： Ralf Lobenstein , Harald Schäuble , Julian Bockstaller
IPC分类号： H02M3/158 , H02M1/36 , H02M1/00
摘要： A circuit assembly for connection to a current source, preferably a 4-20 mA current loop and/or a high-impedance voltage source, preferably a high-impedance voltage source comprising an internal resistance greater than or equal to 100 ohms, includes at least one boost converter with a coil, a diode, in particular a flyback diode, which is connected in series with the coil, an output-side storage capacitor for summing an output voltage, and a switching element for connecting the coil to ground; a circuit part for dynamically controlling the switching element of the boost converter, wherein the circuit part is at least designed to control the switching element of the boost converter in a start-up phase such that the current source directly charges the storage capacitor via the coil until a predefinable reference value is reached.

9. 发明申请

US20220373618A1 MEASUREMENT APPARATUS, CONTROL METHOD FOR MEASUREMENT APPARATUS, AND MEASUREMENT SYSTEM 有权
公开(公告)号：US20220373618A1
公开(公告)日：2022-11-24
申请号：US17738907
申请日：2022-05-06
申请人： CANON KABUSHIKI KAISHA
发明人： Yu Tanaka
IPC分类号： G01R33/00 , H02M1/36 , G05F1/46 , H02M3/156
摘要： A measurement apparatus includes a linear regulator, a switching regulator, an acquisition unit configured to acquire measurement data by sensing a signal as a measurement target, and a control unit configured to selectively drive the linear regulator or the switching regulator, wherein the control unit is configured to select and drive the linear regulator in a first period in which the measurement data is acquired by the acquisition unit, and select and drive the switching regulator in a second period that is different from the first period.

10. 发明授权

US11496053B2 Power conversion system with dc-bus pre-charge 有权
公开(公告)号：US11496053B2
公开(公告)日：2022-11-08
申请号：US17142246
申请日：2021-01-06
申请人： Delta Electronics, Inc.
发明人： Weiqiang Zhang
IPC分类号： H02M1/36 , H02M3/335 , H02M1/00 , H02M7/12
摘要： A power conversion system comprises a plurality of power modules, each including a power input end; a charging input end; a power output end; at least one power conversion unit, each including an AC/DC conversion unit and at least one DC-Bus capacitor and being connected to the power input end and the power output end; and a pre-charging unit connected to the charging input end for receiving direct current and connected to the DC-Bus capacitor. The pre-charging unit starts to charge the DC-Bus capacitor of one of the power modules when said power module breaks down or the load of the power conversion system is light so that no current flows through the AC/DC conversion unit. The power input ends of the power modules are connected in series and then connected to an AC power source, and the power output ends of the power modules are connected in parallel.

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