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公开(公告)号：US11863067B2
公开(公告)日：2024-01-02
申请号：US17528273
申请日：2021-11-17
发明人： Guoqing Cai , Jiacai Zhuang , Xinyu Wang , Jun Xu
摘要： Provided is a bridge cascade system, which includes at least one phase unit and a driving unit for the phase unit. The phase unit includes N bridge topologies cascaded on alternating current AC sides. The driving unit includes one driving power supply circuit, multiple bootstrap power supply circuits and 2N driving circuits. In the phase unit, the driving circuits are powered by the driving power supply circuit directly or through corresponding bootstrap power supply circuits. The driving circuits are configured to provide driving signals for corresponding switch transistors in the phase unit. In this way, one driving power supply is matched with multiple bootstrap power supply circuits, realizing power supply to the driving circuits corresponding to the switch transistors of all bridge topologies, which reduces the difficulty in designing the driving power supply for the bridge cascade system and reduces cost for the system.
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公开(公告)号：US20210305905A1
公开(公告)日：2021-09-30
申请号：US17259367
申请日：2018-07-10
发明人： RAINER GRUBER , MARTIN PIESCHEL
摘要： An apparatus for supplying power to a high-capacity load includes a three-to-two phase transformer including an input side three-phase transformer terminal for connection to a three-phase supply grid and output side first and second output-side single-phase transformer terminals. A converter arrangement has a first partial converter including a first input-side, single-phase AC voltage terminal for the first output-side transformer terminal and a first single-phase output terminal. A second partial converter has a second input-side single-phase AC voltage terminal for the second output-side transformer terminal and a second single-phase output connector. The partial converters are mutually connectable by the output terminals in an output-side series and/or parallel circuit and form a single-phase load terminal for the high-capacity load. A method for supplying power to a high-capacity load is also provided.
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公开(公告)号：US09979312B2
公开(公告)日：2018-05-22
申请号：US15316162
申请日：2015-01-12
IPC分类号： H02M5/293 , H02M1/44 , H02M1/32 , H02M5/257 , H02M5/275 , H02M5/22 , G05F1/445 , G05F1/12 , G05F1/44
CPC分类号： H02M5/293 , G05F1/12 , G05F1/44 , G05F1/445 , H02J3/12 , H02J3/14 , H02J3/18 , H02J3/381 , H02J3/382 , H02J3/383 , H02J3/386 , H02J3/387 , H02M1/32 , H02M1/44 , H02M5/22 , H02M5/257 , H02M5/275 , Y02B10/14 , Y02E10/563 , Y02E10/763 , Y02E40/30 , Y10T307/352
摘要： An energy saving alternate current (AC) series voltage regulator comprises an AC high frequency (HF) series voltage buck power regulator, a bypass contactor (K1), a bidirectional AC semiconductor device (S1) connected in parallel with the bypass contactor and a control circuitry. Under the condition of an input AC mains voltage (Vin) drops below a specified and set optimum energy savings voltage or a lower selected voltage point, the control circuitry transitions both the slow bypass contactor and the fast bidirectional AC semiconductor device, then the AC high frequency (HF) series voltage buck power regulator are switched out to save the AC high frequency (HF) series voltage buck power regulator internal power electronics usage. Under this condition, the lower input AC mains voltage is directly delivered to an electrical load by the contactor bypass system, hence achieving more energy savings.
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4.发明申请公开(公告)号：US20130069605A1
公开(公告)日：2013-03-21
申请号：US13541902
申请日：2012-07-05
申请人： William C. Alexander
发明人： William C. Alexander
IPC分类号： H02M5/275
CPC分类号： H02M5/458 , H02M5/225 , H02M5/275 , H02M7/4807 , H02M7/797 , H02M2007/4815 , Y02B70/1441
摘要： The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output switches are opened, and a crowbar switch shunts the inductance which is used for energy transfer. This prevents this inductance from creating an overvoltage when it is disconnected from outside lines.
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公开(公告)号：US11621643B2
公开(公告)日：2023-04-04
申请号：US17460331
申请日：2021-08-30
摘要： A power conversion apparatus includes: matrix converter circuitry configured to perform bidirectional power conversion between a primary side and a secondary side; and control circuitry configured to: select a first control mode in response to determining that a command-primary frequency difference between a command frequency and a primary side frequency of the matrix converter circuitry is above a predetermined threshold, wherein the first control mode includes causing a secondary side frequency of the matrix converter circuitry to follow the command frequency; select a second control mode in response to determining that the command-primary frequency difference is below the threshold, wherein the second control mode includes maintaining a primary-secondary phase difference between a secondary side phase and a primary side phase of the matrix converter circuitry within a predetermined target range; and control the matrix converter circuitry in accordance with a selection of the first control mode or the second control mode.
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公开(公告)号：US20180287520A1
公开(公告)日：2018-10-04
申请号：US15944001
申请日：2018-04-03
申请人： WITTENSTEIN SE
发明人： Oliver Barth
摘要： The invention relates to a circuit for selectively supplying precisely one motor of a plurality of motors with energy which is provided by precisely one converter. The circuit has a plurality of multiphase motor terminals for connecting motors, with precisely one multiphase converter terminal for connecting precisely one converter, and a plurality of electrical connections, wherein each of the electrical connections respectively comprises a plurality of phase lines, wherein each of the electrical connections is connected to the converter terminal, and wherein precisely one of the electrical connections is respectively connected to precisely one of the motor terminals, wherein precisely one MOSFET for selectively switching the respective phase line is respectively arranged in each phase line of an electrical connection.
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公开(公告)号：US07881087B2
公开(公告)日：2011-02-01
申请号：US12298597
申请日：2007-04-20
申请人： Kenichi Sakakibara
发明人： Kenichi Sakakibara
摘要： An output voltage command signal for outputting a specified three-phase ac output voltage is generated by a line voltage control command signal generating section, and a signal representing a current flow ratio is generated by a current flow ratio generating section based on a specified input current command signal. The output voltage command signal is corrected by a command signal computing section based on the output voltage command signal generated by the line voltage control command signal generating section and the signal representing the current flow ratio generated by the current flow ratio generating section. A PWM conversion signal is generated by a PWM conversion signal generating section based on the corrected output voltage command signal and a carrier signal. Based on the generated PWM conversion signal, a three-phase ac input voltage is converted into a specified three-phase ac input voltage by a conversion section.
摘要翻译： 用于输出指定的三相交流输出电压的输出电压指令信号由线路电压控制指令信号产生部分产生，并且表示电流流量比的信号由电流流量比生成部分基于指定的输入电流产生 命令信号。 输出电压指令信号由指令信号运算部根据由线电压控制指令信号生成部生成的输出电压指令信号和表示由电流流量比生成部生成的电流流量比的信号进行校正。 基于校正后的输出电压指令信号和载波信号，由PWM转换信号生成部生成PWM转换信号。 基于生成的PWM转换信号，通过转换部将三相交流输入电压转换成规定的三相交流输入电压。
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8.发明授权Method for operation of a converter circuit, as well as an apparatus for carrying out the method 有权一种转换器电路的操作方法，以及用于执行该方法的装置公开(公告)号：US07518893B2
公开(公告)日：2009-04-14
申请号：US11826480
申请日：2007-07-16
申请人： Srinivas Ponnaluri , Jürgen Steinke
发明人： Srinivas Ponnaluri , Jürgen Steinke
CPC分类号： H02M7/53871 , H02J7/345 , H02M1/12 , H02M3/158
摘要： A method for operation of a converter circuit is specified, wherein the converter circuit has a converter unit with a multiplicity of drivable power semiconductor switches and an LCL filter which is connected to each phase connection of the converter unit, in which method the drivable power semiconductor switches are driven by means of a drive signal which is formed from reference voltages. The reference voltages are formed by subtraction of damping voltages from reference-phase connection voltages, with the damping voltages being formed from filter capacitance currents, weighted with a variable damping factor of the LCL filter. An apparatus for carrying out the method is also specified.
摘要翻译： 规定了转换器电路的操作方法，其中转换器电路具有多个可驱动功率半导体开关的转换器单元和连接到转换器单元的每个相位连接的LCL滤波器，其中可驱动功率半导体 开关通过由参考电压形成的驱动信号驱动。 参考电压通过从参考相位连接电压中减去阻尼电压形成，阻尼电压由滤波器电容电流形成，并用LCL滤波器的可变阻尼因子加权。 还指定了用于执行该方法的装置。
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9.发明授权AC power supplied static switching apparatus having energy recovery capability 失效具有能量回收能力的交流供电静态开关装置
公开(公告)号：US4697230A
公开(公告)日：1987-09-29
申请号：US877605
申请日：1986-06-23
申请人： Charles L. Neft
发明人： Charles L. Neft
摘要： A three-phase matrix converter including switches having snubber circuits associated thereto, is provided with a common voltage clamp capacitor for limiting the voltage applied to the snubber capacitor, and energy is accumulated in the clamp capacitor which is controllably dissipated, in particular by providing energy to auxiliary elements of the overall system.
摘要翻译： 包括具有与其相关联的缓冲电路的开关的三相矩阵转换器设置有用于限制施加到缓冲电容器的电压的公共电压钳位电容器，并且能量被累积在可控制地耗散的钳位电容器中，特别是通过提供能量 到整个系统的辅助元件。
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公开(公告)号：US11245346B2
公开(公告)日：2022-02-08
申请号：US16676357
申请日：2019-11-06
发明人： Chae Duck Chon , Jung Hwi Kim
IPC分类号： H02P5/747 , H02J7/00 , B60L15/00 , B60L50/40 , B60L50/61 , H02M5/275 , B60L50/16 , H02P101/45
摘要： A multi-input charging system and method using a motor driving system can prevent relay fusing or cutting in a motor and damage of a neutral point capacitor provided in a charging power input stage in a process of receiving external charging power through a neutral point of the motor and charging a battery.
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