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公开(公告)号：US20240195339A1
公开(公告)日：2024-06-13
申请号：US18065170
申请日：2022-12-13
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Bing Li
IPC: H02P27/06 , H02P21/14 , H02P21/18 , H02P21/34 , H02P25/024 , H02P25/092
CPC classification number: H02P27/06 , H02P21/141 , H02P21/18 , H02P21/34 , H02P25/024 , H02P25/092 , H02P2201/01 , H02P2207/01
Abstract: A method for flying start control of a motor, a computer readable medium, and a power conversion system having an inverter and a controller configured by computer executable instructions in a memory to perform flying start of a rotating motor by field weakening control to control the motor responsive to the motor speed exceeding the rated speed or other non-zero threshold at startup of the power conversion system. The method includes measuring a motor speed of a motor, responsive to startup of a power conversion system, and performing a flying start operation using field weakening control to control the motor responsive to the motor speed exceeding a non-zero threshold at startup of the power conversion system.
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公开(公告)号：US08853876B1
公开(公告)日：2014-10-07
申请号：US13871309
申请日：2013-04-26
Applicant: General Electric Company
Inventor： Robert Gregory Wagoner , Cornelius Edward Holliday
CPC classification number: F03D7/0276 , F03D7/0272 , F03D7/028 , F05B2270/337 , H02J3/386 , H02P9/007 , H02P2201/01 , H02P2207/073 , Y02E10/723 , Y02E10/763
Abstract: A method for operating a power generation system that supplies power for application to a load is disclosed. The method may generally include receiving, at a power converter, an alternating current power generated by a generator operating at a speed that is substantially equal to its synchronous speed and converting, with the power converter, the alternating current power to an output power, wherein the power converter includes at least one switching element. In addition, the method may include receiving a control command to control a switching frequency of the at least one switching element and adjusting the switching frequency to an adjusted switching frequency that is substantially equal to a fundamental frequency of the load.
Abstract translation: 公开了一种用于操作向负载施加电力的发电系统的方法。 该方法通常可以包括在功率转换器处接收由发电机产生的交流电力，该发电机以基本上等于其同步速度的速度运行，并且利用功率转换器将交流电力转换为输出功率，其中 功率转换器包括至少一个开关元件。 此外，该方法可以包括接收用于控制至少一个开关元件的开关频率并将开关频率调整到基本上等于负载的基频的调节开关频率的控制命令。
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公开(公告)号：US09374033B2
公开(公告)日：2016-06-21
申请号：US14371599
申请日：2012-12-25
Inventor： Kenji Oda , Katsuhiko Fukuma
CPC classification number: H02P27/14 , H02M5/4585 , H02M7/487 , H02P2201/01
Abstract: A three-level power conversion apparatus can suppress fluctuation in a neutral point voltage even when operated as a reactive power regulator. The three-level power conversion apparatus is composed of first and second three-level converters connected to an AC power supply, positive side and negative side DC capacitors, a three-level inverter to drive an AC motor, and converter control unit for controlling the three-level converters. The converter control unit has first and second reactive current controllers for controlling so that reactive portions of input currents of each three-level converter become a prescribed reactive current reference, first and second neutral point voltage fluctuation suppressing units for controlling a PWM controller, to make a voltage difference of two DC capacitors zero, and an active current controller for supplying a prescribed circulating active current from one three-level converter to other three-level converter.
Abstract translation: 即使作为无功功率调节器动作，三电平变换装置也能够抑制中性点电压的波动。 三电平转换装置由连接于交流电源，正极和负极直流电容器的第一和第二三电平转换器，驱动交流电动机的三电平逆变器和用于控制交流电动机的转换器控制单元 三电平转换器。 转换器控制单元具有用于控制的第一和第二无功电流控制器，使得每个三电平转换器的输入电流的无功部分变为规定的无功电流基准，用于控制PWM控制器的第一和第二中性点电压波动抑制单元， 两个直流电容器的电压差为零，以及用于从一个三电平转换器向另一个三电平转换器提供规定的循环有功电流的有功电流控制器。
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4.发明申请METHOD FOR OPERATING LEAN FUEL INTAKE GAS TURBINE ENGINE, AND GAS TURBINE POWER GENERATION DEVICE 审中-公开运行燃油燃油涡轮发动机的方法和燃气轮机发电装置公开(公告)号：US20140291993A1
公开(公告)日：2014-10-02
申请号：US14307985
申请日：2014-06-18
Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
Inventor： Kazuya MATSUO , Takehiro YOSHIHARA , Tsuyoshi KOGA , Tomoyuki KOMAI , Yoshihiro YAMASAKI , Shinichi KAJITA
CPC classification number: H02P9/008 , F01D15/10 , F02C3/22 , F02C6/18 , F02C9/00 , F02C9/40 , F05D2220/75 , F05D2270/02 , F05D2270/304 , H02P9/04 , H02P2201/01 , Y02E50/11
Abstract: A method for stably operating a lean fuel intake gas turbine engine by controlling the rotation speed of the lean fuel intake gas turbine engine for which it is difficult to control the rotation speed by controlling a fuel flow rate, is provided. In a method for operating a lean fuel intake gas turbine engine (GT) configured to use, as a fuel, a combustible component contained in a low-concentration methane gas to drive a power generator, a power converter (17) is provided between an external electric power system (19) and the power generator (11), and a rotation speed of the power generator (11) is controlled by the power converter (17), to control a rotation speed of the gas turbine engine (GT).
Abstract translation: 提供了一种通过控制难以通过控制燃料流量来控制转速的贫燃料进气燃气涡轮发动机的转速来稳定地操作贫燃料进气燃气涡轮发动机的方法。 在一种用于操作贫燃料进气燃气涡轮发动机（GT）的方法中，配置为使用包含在低浓度甲烷气体中的可燃组分作为燃料来驱动发电机，功率转换器（17）设置在 外部电力系统（19）和发电机（11），并且由功率转换器（17）控制发电机（11）的转速，以控制燃气轮机（GT）的转速。
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公开(公告)号：US20240186930A1
公开(公告)日：2024-06-06
申请号：US18062173
申请日：2022-12-06
Applicant: Trane International Inc.
Inventor： Benjamin J. Sykora
CPC classification number: H02P23/04 , H02P25/184 , H02P27/06 , H02P2201/01
Abstract: According to an embodiment of the present disclosure, an apparatus includes a transformer having a set of input terminals, a first set of output terminals, and a second set of output terminals. First and second rectifiers are coupled to the first and second sets of output terminals, respectively. The transformer is configured to transform three phase alternating current (AC) provided to the set of input terminals into first and second three phase AC outputs at the first and second sets of output terminals, respectively. The first three phase AC output is phase shifted from the second three phase AC output.
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Patent Agency Ranking
公开(公告)号：US11984814B2
公开(公告)日：2024-05-14
申请号：US17033442
申请日：2020-09-25
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Lixiang Wei , Peizhong Yi , Robert W. Reese , Brian P. Brown , Jatinkumar Patel
CPC classification number: H02M7/2173 , H02M1/083 , H02P27/06 , H02M1/0058 , H02P2201/01
Abstract: For open loop phase pre-charge, an apparatus includes a Switching Mode Power Supply (SMPS) charging diode and a charge generator. The SMPS charging diode pre-charges an SMPS to a regulation set point from at least one phase of an Alternating Current (AC) voltage. The charge generator is powered by the pre-charged SMPS. In response to detecting the regulation set point iteratively, the charge generator detects a specified phase angle of the AC voltage. In response to the specified phase angle, the charge generator iteratively generates a charging voltage during positive voltage interval that charges a Direct Current (DC) bus capacitor to a target DC bus voltage within a charging time interval. At least a portion of the charge generator comprises one or more of hardware and executable code, the executable code stored on one or more computer readable storage media.
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公开(公告)号：US20150002066A1
公开(公告)日：2015-01-01
申请号：US14371599
申请日：2012-12-25
Inventor： Kenji Oda , Katsuhiko Fukuma
IPC: H02P27/14
CPC classification number: H02P27/14 , H02M5/4585 , H02M7/487 , H02P2201/01
Abstract: To provide a three-level power conversion apparatus which can suppress fluctuation in a neutral point voltage even when operated as a reactive power regulator. The three-level power conversion apparatus is composed of first and second three-level converters 2A, 2B connected to an AC power supply system, positive side and negative side DC capacitors 3P, 3N, a three-level inverter 4 to drive an AC motor 5, and converter control means 10 for controlling the three-level converters 2A, 2B. The converter control means 10 has first and second reactive current control means 15A, 15B for controlling so that reactive portions of input currents of the three-level converters 2A, 2B become a prescribed reactive current reference, respectively, first and second neutral point voltage fluctuation suppressing means for controlling PWM control means 17A, 17B, respectively, so as to make a difference between voltages applied to DC capacitors 3P, 3N to be zero, and active current control means for supplying a prescribed circulating active current from the three-level converter 2A to the three-level converter 2B.
Abstract translation: 提供即使作为无功功率调节器动作也能够抑制中性点电压的波动的三电平变换装置。 三电平电力转换装置由连接于交流电源系统，正极侧和负极侧直流电容器3P，3N的第一和第二三电平转换器2A，2B，驱动交流电动机的三电平逆变器4 以及用于控制三电平转换器2A，2B的转换器控制装置10。 转换器控制装置10具有第一和第二无功电流控制装置15A，15B，用于控制使得三电平转换器2A，2B的输入电流的无功部分分别变为规定的无功电流基准，第一和第二中性点电压波动 用于分别控制PWM控制装置17A，17B以使施加到DC电容器3P，3N的电压之间的差为零的抑制装置;以及用于从三电平转换器提供规定的循环有功电流的有功电流控制装置 2A到三电平转换器2B。
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公开(公告)号：US11728742B2
公开(公告)日：2023-08-15
申请号：US17243797
申请日：2021-04-29
Inventor： Shunsuke Tobayashi , Hiromitsu Suzuki
CPC classification number: H02M5/4585 , H02M7/483 , H02M7/487 , H02M7/4833 , H02P27/08 , H02P27/14 , H02P2201/01
Abstract: A power conversion apparatus capable of supplying a required reactive power while dynamically changing a dead band near 0 reactive current and maintaining a balance of DC voltage is provided. The power conversion apparatus including a three-level converter, a PWM controller for the three-level converter, an input current detector of the three-level converter, a coordinate converter that converts the current into a d-axis and q-axis current feedback, the reactive power control unit that controls a reactive power and outputs an reactive current reference, a d-axis current control unit having a dead band part for setting the d-axis current reference with hysteresis characteristics in the q-axis current feedback, and outputs the d-axis voltage reference, a q-axis current control unit that outputs a q-axis voltage reference based on the q-axis current reference, an inverse coordinate converter that outputs a three-phase AC voltage command based on the d-axis and q-axis voltage reference.
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公开(公告)号：US11652421B2
公开(公告)日：2023-05-16
申请号：US17701543
申请日：2022-03-22
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Gary L. Skibinski , Zhijun Liu
CPC classification number: H02M5/458 , H02P23/00 , H03H7/06 , H02P2201/01
Abstract: A line interface filter apparatus to couple a drive or group of drives to a shared multiphase AC bus, including individual phase circuits having an inductor coupled between a respective bus and drive phase lines, a tapped resistor coupled to the respective drive phase line, and a capacitor coupled between the resistor and a common connection of the capacitors of the individual phase circuits, where the capacitance of the capacitors is 5 to 15 times a per-phase equivalent capacitance of the drive or group of drives, and the resistance of the resistors is two times a damping ratio times a square root of a ratio of the filter inductance to the filter capacitance, where the damping ratio ζ is greater than or equal to 1.0 and less than or equal to 2.0.
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公开(公告)号：US08970158B1
公开(公告)日：2015-03-03
申请号：US13432773
申请日：2012-03-28
Applicant: Louis David Chowning
Inventor： Louis David Chowning
CPC classification number: H02P23/14 , F25B9/14 , F25B2309/1428 , H02P23/0004 , H02P27/16 , H02P2201/01
Abstract: In one embodiment, a cryocooler drive circuit for a cryocooler motor is provided that includes: a first switching power converter configured to track a first sinusoidal input voltage signal to provide a first sinusoidal output voltage signal at a first output node; and a second switching power converter configured to track a second sinusoidal input voltage signal to provide a second sinusoidal output voltage signal at a second output node, wherein the second sinusoidal input voltage signal is an inverted version of the first sinusoidal input voltage signal such that the cryocooler motor is driven by an alternating current flowing between the first and second output nodes.
Abstract translation: 在一个实施例中，提供了一种用于低温冷却器电动机的低温冷却器驱动电路，其包括：第一开关功率转换器，被配置为跟踪第一正弦输入电压信号以在第一输出节点处提供第一正弦输出电压信号; 以及第二开关功率转换器，被配置为跟踪第二正弦输入电压信号以在第二输出节点处提供第二正弦输出电压信号，其中所述第二正弦输入电压信号是所述第一正弦输入电压信号的反相形式， 低温冷却电机由在第一和第二输出节点之间流动的交流电驱动。
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