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公开(公告)号：US20240280645A1
公开(公告)日：2024-08-22
申请号：US18333373
申请日：2023-06-12
Applicant: Cypress Semiconductor Corporation
Inventor： Arun KHAMESRA , Hariom Rai , Pulkit Shah
CPC classification number: G01R31/40 , H02H7/125 , H02M1/0006 , H02M1/088 , H02M3/33576
Abstract: One or more computing devices, systems, and/or methods are provided. In an example of the techniques presented herein, a method of operating a Universal Serial Bus Power Delivery (USB-PD) power converter is provided. The method includes generating a pulse width modulated (PWM) signal for controlling the power converter. An output current signal for the power converter is determined. The output current signal corresponds to an output current across an external sense resistor coupled in an output path of the USB-PD power converter. A fault condition is identified based on the PWM signal and the output current signal. Operation of the power converter is disabled responsive to identifying the fault condition.
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2.发明授权公开(公告)号：US12034292B2
公开(公告)日：2024-07-09
申请号：US18132062
申请日：2023-04-07
Applicant: Eaton Intelligent Power Limited
Inventor： Huaqiang Li , Seth O'Brien , Thomas M. Ruchti
CPC classification number: H02H7/0833 , H02H3/202 , H02H7/1216 , H02H7/125 , H02M1/08 , H02M1/32 , H02M5/4585 , H02M7/2173
Abstract: A power conversion circuit having a solid-state circuit breaker integrated therein is disclosed. With a disconnect switch between a utility source and the power conversion apparatus described for meeting UL489, the power conversion circuit includes an input connectable to an AC source, a rectifier circuit connected to the input to convert an AC power input to a DC power, and a DC link coupled to the rectifier circuit to receive the DC power therefrom. The rectifier circuit comprises a plurality of phase legs each including thereon an upper switching unit and a lower switching unit, wherein at least one of the upper and lower switching units on each phase leg comprises a bi-directional switching unit that selectively controls current and withstands voltage in both directions, so as to provide a circuit breaking capability that selectively interrupts current flow through the rectifier circuit, while maintaining original power conversion functionalities.
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公开(公告)号：US11682965B2
公开(公告)日：2023-06-20
申请号：US17402164
申请日：2021-08-13
Applicant: Chicony Power Technology Co., Ltd.
Inventor： Yung-Hung Hsiao , Chia-Hsien Yen , Cheng-Chang Hsiao , Che-Han Li , Yu-Xian Zeng
Abstract: A power supply with lightning protection includes a surge voltage suppression apparatus, an electromagnetic interference control circuit, a surge current bypass apparatus, an active bridge rectifier circuit, a power factor correction circuit, and a DC-to-DC conversion circuit. The surge voltage suppression apparatus is used to increase a tolerance of a surge voltage for the power supply. The electromagnetic interference control circuit is coupled to the surge voltage suppression apparatus. The surge current bypass apparatus is used to increase a tolerance of a surge current for the power supply. The active bridge rectifier circuit is used to rectify an input voltage. The power factor correction circuit is used to adjust the rectified input voltage to provide an adjusted input voltage on a bulk capacitor. The DC-to-DC conversion circuit is used to convert the adjusted input voltage into a DC output voltage.
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公开(公告)号：US09945359B2
公开(公告)日：2018-04-17
申请号：US14826067
申请日：2015-08-13
Applicant: ABB Schweiz AG
Inventor： Debrup Das , Jiuping Pan , Joseph A. Carr
Abstract: A wind turbine is disclosed having a generator and rectifier and structured to provide direct current power that in one form is medium voltage direct current (MVDC). The wind turbine includes a crowbar circuit arranged to protect from a condition such as an overvoltage. The crowbar can be activated based on a voltage measurement or rate of change of voltage. A resistor can be coupled to the crowbar to absorb excess power provided by the generator during the overvoltage condition. Individual wind turbines in a wind farm can each have individual crow bars that can be activated based on local measurement of a voltage condition. In some forms the crowbar can be coupled with a transformer, for example coupled with a tertiary winding of a three winding transformer.
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公开(公告)号：US09837914B1
公开(公告)日：2017-12-05
申请号：US15487468
申请日：2017-04-14
Applicant: INNO-TECH CO., LTD.
Inventor： Chih-Liang Wang , Ching-Sheng Yu , Wen-Yen Pen
CPC classification number: H02H7/125 , H02M1/4258
Abstract: Disclosed is a method of dynamical adjustment for a power supply. The method takes aim at lowering the minimum bulk capacitor voltage to the maximum extent through increasing the switching frequency or the OCP (Over-Current Protection) trip point during the holdup time so that the holdup time can get prolonged or the bulk capacitor can get downsized provided that all other parameters remain unchanged. In general, the proposed method is applicable to a wide variety of power converters.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20170244277A1
公开(公告)日：2017-08-24
申请号：US15412476
申请日：2017-01-23
Applicant: Liebert Corporation
Inventor： Charles F. BLAIR , Terry D. BUSH , Xian CHEN
IPC: H02J9/06
Abstract: A method reduces inrush currents in a transformer-less rectifier UPS system when an input circuit breaker of the UPS system is closed from an open position. The circuit breaker is coupled between an AC power input and an AC input of a rectifier of the UPS system and a DC output of the rectifier is coupled to a DC bus of the UPS system. Before the circuit breaker is closed, the DC bus is charged to a DC voltage having a level that is equal to a peak AC voltage level of a line-line AC voltage of AC input power to the UPS system. The rectifier is operated as an inverter to provide an AC output voltage at the AC input of the rectifier that is equal to an AC voltage at the AC power input and when it is equal, the circuit breaker is closed.
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公开(公告)号：US20170045035A1
公开(公告)日：2017-02-16
申请号：US14826067
申请日：2015-08-13
Applicant: ABB Technology Ltd.
Inventor： Debrup Das , Jiuping Pan , Joseph A. Carr
IPC: F03D9/00
Abstract: A wind turbine is disclosed having a generator and rectifier and structured to provide direct current power that in one form is medium voltage direct current (MVDC). The wind turbine includes a crowbar circuit arranged to protect from a condition such as an overvoltage. The crowbar can be activated based on a voltage measurement or rate of change of voltage. A resistor can be coupled to the crowbar to absorb excess power provided by the generator during the overvoltage condition. Individual wind turbines in a wind farm can each have individual crow bars that can be activated based on local measurement of a voltage condition. In some forms the crowbar can be coupled with a transformer, for example coupled with a tertiary winding of a three winding transformer.
Abstract translation: 公开了一种具有发电机和整流器并被构造成提供直流电力的风力涡轮机，其以一种形式是中等电压直流（MVDC）。 风力涡轮机包括布置成防止诸如过电压的状况的短路电路。 可以根据电压测量或电压变化率来激活撬棒。 电阻器可以耦合到撬棍以吸收在过电压状态期间由发电机提供的过多功率。 风力发电场中的各个风力涡轮机可以各自具有可以基于电压状况的局部测量来激活的单独的乌鸦棒。 在一些形式中，撬棍可以与变压器耦合，例如与三绕组变压器的三次绕组耦合。
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8.发明申请公开(公告)号：US20160380429A1
公开(公告)日：2016-12-29
申请号：US14748963
申请日：2015-06-24
Applicant: Eaton Corporation
Inventor： Slobodan Krstic
IPC: H02J1/00
CPC classification number: H02J1/00 , H02H7/125 , H02J3/36 , H02M7/219 , H02M7/25 , H02M2001/0077 , Y02E60/60
Abstract: An apparatus includes an output port configured to be coupled to a load, a plurality of current source rectifier (CSR) circuits having outputs coupled in series across the output port, and a control circuit configured to control the CSR circuits responsive to a voltage at the output port. The quantity of CSR circuits may be sufficient to provide redundancy in the event one or more of the CSR circuits fails.
Abstract translation: 一种装置包括被配置为耦合到负载的输出端口，具有串联耦合在输出端口上的输出的多个电流源整流器（CSR）电路，以及控制电路，被配置为响应于在 输出端口 CSR电路的数量可能足以在一个或多个CSR电路出现故障的情况下提供冗余。
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9.发明申请System and Method Providing Reliable Over Current Protection for Power Converter 有权系统和方法为电源转换器提供可靠的过流保护公开(公告)号：US20160226239A1
公开(公告)日：2016-08-04
申请号：US14639607
申请日：2015-03-05
Applicant: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.
Inventor： Dongze Yang , Xiaomin Huang , Xiaozhi Kang , Yuan Lin , Huawei Lyu , Lieyi Fang
CPC classification number: H02H7/125 , H02H7/12 , H02H9/025 , H02M1/08 , H02M1/32 , H02M1/44 , H02M3/33507 , H02M3/33523 , H02M2001/0009
Abstract: System controller and method for protecting a power converter. The system controller includes a first controller terminal configured to output a drive signal to a switch to affect a first current flowing through a primary winding of a power converter. The power converter further includes a secondary winding coupled to the primary winding, and the drive signal is associated with one or more switching periods. Additionally, the system controller includes a second controller terminal configured to receive a sensing voltage from a sensing resistor. The sensing voltage represents a magnitude of the first current flowing through the primary winding of the power converter. The system controller is configured to process information associated with the sensing voltage and a reference voltage, and determine whether an average output current of the power converter is larger than a current threshold.
Abstract translation: 用于保护电源转换器的系统控制器和方法。 系统控制器包括第一控制器端子，其被配置为将驱动信号输出到开关以影响流过功率转换器的初级绕组的第一电流。 功率转换器还包括耦合到初级绕组的次级绕组，并且驱动信号与一个或多个开关周期相关联。 此外，系统控制器包括被配置为从感测电阻器接收感测电压的第二控制器端子。 感测电压表示流过功率转换器的初级绕组的第一电流的大小。 系统控制器被配置为处理与感测电压和参考电压相关联的信息，并且确定功率转换器的平均输出电流是否大于电流阈值。
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公开(公告)号：US09379538B2
公开(公告)日：2016-06-28
申请号：US14357724
申请日：2012-11-09
Applicant: CSMC TECHNOLOGIES FAB2 CO., LTD.
Inventor： Guoding Dai , Xiaohui Ma , ChaoYao Xue , Jian Ou , Jing Lu
Abstract: An output over-voltage protection circuit for power factor correction, which includes a chip external compensation network, a chip external resistor divider network, a static over-voltage detection circuit, a dynamic over-voltage detection circuit and a compare circuit; The chip external compensation network is connected between the chip external resistor divider network and the dynamic over-voltage detection circuit, the chip external compensation network converts the dynamic over-voltage signal conversion to the dynamic current signal and conveys it to the dynamic over-voltage detection circuit, the dynamic over-voltage detection circuit detects the dynamic current signal and ultimately produces the dynamic over-voltage signal (DYOVP); The dynamic over-voltage signal (DYOVP) is inputted into the compare circuit, which converts the dynamic over-voltage signal (DYOVP) into a voltage compared with a reference voltage and outputs a over-voltage control signal (OVP), so as to achieve a dynamic over-voltage protection function.
Abstract translation: 一种用于功率因数校正的输出过压保护电路，包括芯片外部补偿网络，芯片外部电阻分压网络，静态过电压检测电路，动态过电压检测电路和比较电路; 芯片外部补偿网络连接在芯片外部电阻分压网络和动态过压检测电路之间，芯片外部补偿网络将动态过电压信号转换转换为动态电流信号，并将其传送到动态过电压 检测电路，动态过电压检测电路检测动态电流信号，最终产生动态过电压信号（DYOVP）; 动态过电压信号（DYOVP）被输入到比较电路中，其将动态过电压信号（DYOVP）转换为与参考电压相比的电压，并输出过压控制信号（OVP），以便 实现动态过压保护功能。
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