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1. 发明授权

US08766477B2 Drive system for a facility having an alternating-current isolated network 失效
标题翻译：具有交流隔离网络的设施的驱动系统
公开(公告)号：US08766477B2
公开(公告)日：2014-07-01
申请号：US13263906
申请日：2010-04-07
申请人： Bernd Hartwig , Reinhard Vogel
发明人： Bernd Hartwig , Reinhard Vogel
IPC分类号： H02J3/34 , B60L9/28 , B60L7/06 , B63H23/24 , H02P23/06 , H02P3/22 , H02M5/451 , H02M5/45
CPC分类号： H02P23/06 , B60L7/06 , B60L9/28 , B63H23/24 , H02M5/4505 , H02M5/451 , H02P3/22 , H02P2201/13 , Y10T307/664
摘要： At least one embodiment of the invention generally relates to a drive system for a facility having an alternating-current isolated network, in particular for a ship or an offshore platform, including a three-phase drive machine, which can be operated both as a motor and as a generator, and including a converter having a direct-current intermediate circuit having an intermediate circuit voltage. At least one embodiment of the invention aims to provide a way of avoiding undesired and/or impermissible voltage and/or frequency increases in the alternating-current isolated network. For this purpose, the drive system includes according to the invention an energy absorbing device arranged in the intermediate circuit, which energy absorbing device includes at least one energy absorber, which preferably includes at least one electrical resistor, for absorbing at least a part of the electrical energy that the three-phase drive machine generates in generator operation and outputs to the intermediate circuit by way of the motor-side current converter of the converter. The energy absorber can be activated by the energy absorbing device according to the polarity of the intermediate circuit voltage. The energy absorbing device is preferably variable regarding an absorption of electrical braking power of the three-phase drive machine.
摘要翻译：本发明的至少一个实施例一般涉及用于具有交流隔离网络的设施的驱动系统，特别是对于船舶或海上平台，包括三相驱动机器，其可以作为电动机并且作为发电机，并且包括具有中间电路电压的直流中间电路的转换器。本发明的至少一个实施例旨在提供一种避免交流隔离网络中不希望的和/或不允许的电压和/或频率增加的方法。为此，驱动系统包括根据本发明的布置在中间回路中的能量吸收装置，该能量吸收装置包括至少一个能量吸收器，其优选地包括至少一个电阻器，用于吸收至少一部分三相驱动电机在发电机运行时产生的电能，并通过转换器的电动机侧电流转换器输出到中间电路。能量吸收器可以根据中间回路电压的极性被能量吸收装置激活。能量吸收装置优选地关于三相驱动机械的电制动功率的吸收是可变的。

2. 发明申请

US20100133910A1 UNINTERRUPTIBLE POWER SUPPLY 有权
标题翻译：不间断电源供应
公开(公告)号：US20100133910A1
公开(公告)日：2010-06-03
申请号：US12563220
申请日：2009-09-21
申请人： Yuan-Fang Lai
发明人： Yuan-Fang Lai
IPC分类号： H02J9/06 , H02M5/451
CPC分类号： H02J9/062 , H02M1/36 , Y10T307/516 , Y10T307/625
摘要： An uninterruptible power supply includes an input switching circuit, an AC-to-DC converting circuit, a bus capacitor, an energy storage unit, a charging circuit, a DC-to-DC converting circuit, and a system control circuit. The input switching circuit receives an input AC voltage. The AC-to-DC converting circuit is used for converting the input AC voltage into a bus voltage. The energy storage unit is used for storing electric energy. The charging circuit is used for charging the energy storage unit. The DC-to-DC converting circuit is used for converting the energy storage unit connecting node voltage into a regulated DC voltage. The system control circuit is used for controlling operations of the uninterruptible power supply. When the uninterruptible power supply is initiated, the AC-to-DC converting circuit is disabled and the bus capacitor is charged by the DC-to-DC converting circuit under control of the system control circuit.
摘要翻译：不间断电源包括输入开关电路，AC-DC转换电路，总线电容器，能量存储单元，充电电路，DC-DC转换电路和系统控制电路。输入开关电路接收输入的交流电压。 AC-DC转换电路用于将输入交流电压转换成总线电压。储能单元用于储存电能。充电电路用于对能量存储单元充电。 DC-DC转换电路用于将能量存储单元连接节点电压转换为稳定的直流电压。系统控制电路用于控制不间断电源的运行。当不间断电源启动时，在系统控制电路的控制下，AC-DC转换电路被禁止，并且总线电容器被DC-DC转换电路充电。

3. 发明授权

US07102901B2 Medium frequency energy supply for rail vehicles 失效
公开(公告)号：US07102901B2
公开(公告)日：2006-09-05
申请号：US10058454
申请日：2002-01-28
申请人： Andreas Falk , Mathias Victor , Guido Bachmann
发明人： Andreas Falk , Mathias Victor , Guido Bachmann
IPC分类号： H02M5/451
CPC分类号： B60L9/24 , B60L2200/26
摘要： Disclosed is an electronic circuit for the bidirectional conversion of a high input voltage to a direct-current output voltage with indirect coupling, more specifically such a circuit for use in a power supply system for rail vehicles, that is provided with a primary converter, one single common transformer and a secondary converter. The primary converter includes at least three primary converter sections connected in series, the output lines of which are each connected to a respective one of the transformer primary windings.

4. 发明授权

US5420778A Independent real time control of output frequency and voltage of PWM inverter 失效
标题翻译： PWM逆变器输出频率和电压的独立实时控制
公开(公告)号：US5420778A
公开(公告)日：1995-05-30
申请号：US223365
申请日：1994-04-05
申请人： Hozo Yoshino
发明人： Hozo Yoshino
IPC分类号： H02M7/48 , H02P27/08 , H02M5/451 , H02P5/40
CPC分类号： H02P27/047 , H02M7/48 , H02P27/08 , Y02P80/116
摘要： An inverter for driving a motor, when a command frequency is given, the output voltage is increased as output current is increased as to optimize motor efficiency under varying load conditions. The inverter is comprised of a converter to convert an input ac voltage to a dc voltage, a current sensor to measure an output current for determining a load level of the motor, a voltage setting means to calculate a command voltage as a function of a command frequency and the measured current, an encoding means to issue on a real time basis bit patterns containing information on the command frequency and the command voltage, a decoding means to decode the bit patterns into a pulse width modulated (PWM) signal, a clock means to provide a timing signal for the encoding means and the decoding means, and an inverter to modulate the dc voltage by the PWM signal, thereby applying the motor input voltage to the motor.
摘要翻译：一种用于驱动电动机的逆变器，当给定指令频率时，输出电压随着输出电流增加而增加，以在变化的负载条件下优化电动机效率。逆变器包括将输入交流电压转换为直流电压的转换器，用于测量用于确定电动机的负载水平的输出电流的电流传感器;计算作为指令的函数的指令电压的电压设定装置频率和测量电流;编码装置，用于实时地发布包含关于命令频率和命令电压的信息的位模式;将位模式解码为脉宽调制（PWM）信号的解码装置，时钟装置提供用于编码装置和解码装置的定时信号，以及逆变器，用于通过PWM信号调制直流电压，从而将电动机输入电压施加到电动机。

5. 发明授权

US4901001A Power converter for AC load 失效
标题翻译：电源转换器用于交流负载
公开(公告)号：US4901001A
公开(公告)日：1990-02-13
申请号：US271404
申请日：1988-11-14
申请人： Suzuo Saito , Tadao Mose
发明人： Suzuo Saito , Tadao Mose
IPC分类号： H02M5/451 , H02M5/45 , H02M7/757 , H02P1/30 , H02P27/06
CPC分类号： H02P27/06 , H02M5/4505 , H02M7/757 , H02P1/30 , H02P2201/03
摘要： A power converter for starting an AC induction motor includes a frequency detector which compares the frequency of an AC output of the converter with a predetermined frequency and generates a detection signal if the AC output frequency is lower than the predetermined frequency, a current controller which controls the power converter such that an AC output current supplied to the motor is determined in accordance with a given current reference if the detection signal is generated, and a voltage controller which controls the power converter so that an AC output voltage applied to the motor is regulated in accordance with a given voltage reference if the detection signal disappears.
摘要翻译：用于启动AC感应电动机的电力转换器包括频率检测器，其将转换器的AC输出的频率与预定频率进行比较，并且如果AC输出频率低于预定频率则产生检测信号;控制器所述功率转换器使得如果产生所述检测信号，则根据给定的电流参考来确定提供给所述电动机的AC输出电流;以及电压控制器，其控制所述功率转换器，使得施加到所述电动机的AC输出电压被调节如果检测信号消失，则根据给定的参考电压。

6. 发明申请

US20210167692A1 POWER CONVERTER APPARATUS PROVIDED WITH LOW-PASS FILTER CIRCUIT FOR REDUCING SWITCHING FREQUENCY COMPONENTS 有权
公开(公告)号：US20210167692A1
公开(公告)日：2021-06-03
申请号：US17259500
申请日：2019-03-11
申请人： OMRON Corporation
发明人： Noriyuki NOSAKA , Takeo NISHIKAWA , Wataru OKADA , Satoshi IWAI , Takanori ISHII , Gun ETO
IPC分类号： H02M5/451 , H02M5/452
摘要： A power converter apparatus is provided to include a switching circuit, and a filter circuit. The switching circuit generates an AC voltage by switching a DC voltage at a predetermining switching frequency, and the filter circuit converts the AC voltage from the switching circuit into the DC voltage by low-pass filtering the AC voltage. The filter circuit induces first and second bypass capacitors, and an inductor. The first bypass capacitor bypasses noise of a first frequency component of the AC voltage from the switching circuit, and the second bypass capacitor bypasses noise of a second frequency component of the AC voltage from the switching circuit, which is lower than the first frequency component. The inductor is inserted between the first and second bypass capacitors, and the inductance thereof is set so that a resonance frequency of the filter circuit is lower than the switching frequency by insertion of the inductor.

7. 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.

8. 发明授权

US09899917B2 Method for producing an output voltage and assembly for performing the method 有权
公开(公告)号：US09899917B2
公开(公告)日：2018-02-20
申请号：US14008946
申请日：2012-03-30
申请人： Hans Baernklau , Steffen Bernet , Albrecht Gensior , Jens Weber
发明人： Hans Baernklau , Steffen Bernet , Albrecht Gensior , Jens Weber
IPC分类号： H02M5/451 , H02M3/158 , H02M7/483 , H02P27/14 , H02M1/00
CPC分类号： H02M3/158 , H02M5/451 , H02M7/483 , H02M2001/0003 , H02M2007/4835 , H02P27/14
摘要： In a method for generating with a modular multilevel power converter (M2C) having a plurality of sub-modules a frequency-variable output voltage, the sub-modules are switched on and off to generate from an input voltage discrete voltage steps approximating an approximately sinusoidal alternating output voltage having a first angular frequency located between a zero frequency and a second angular frequency, and the input voltage is controlled or regulated as a function of the first angular frequency so as to be located between a lower angular frequency, which is equal to or greater than the zero frequency, and a third angular frequency, such that the input voltage increases with increasing first angular frequency, thereby reducing capacitor complexity in the power converter.

9. 发明授权

US09054589B2 Method and apparatus for detecting power converter capacitor degradation using negative sequence currents 有权
标题翻译：使用负序电流检测功率转换器电容器劣化的方法和装置
公开(公告)号：US09054589B2
公开(公告)日：2015-06-09
申请号：US13650891
申请日：2012-10-12
申请人： Rockwell Automation Technologies, Inc.
发明人： Zhongyuan Cheng , Yuan Xiao , Ghodratollah Esmaeili Rineh , Manish Pande , Navid Zargari
IPC分类号： H02H3/00 , H02M1/32 , H02M5/451 , H02M5/458 , H02M7/525 , H02M7/539 , G01R31/02 , G01R31/42
CPC分类号： H02M1/32 , G01R31/028 , G01R31/42 , H02M1/126 , H02M5/4505 , H02M5/451 , H02M5/458 , H02M5/4585 , H02M7/525 , H02M7/539
摘要： Power converters and control techniques are presented in which capacitor degradation is detected according to negative sequence current by computing an uncompensated negative sequence current and a negative sequence voltage, compensating the negative sequence current based on the negative sequence voltage, comparing the compensated or uncompensated negative sequence current with an automatically calculated threshold and selectively identifying suspected degradation of one or more capacitors if the compensated negative sequence current exceeds the threshold value. The method can be used for power converters, control devices or protection relays for shunt capacitors or filters used in power systems.
摘要翻译：提出了功率转换器和控制技术，其中通过计算未补偿的负序电流和负序电压根据负序电流检测电容器劣化，基于负序电压补偿负序电流，比较补偿或未补偿的负序电流具有自动计算的阈值，并且如果补偿的负序电流超过阈值，则选择性地识别一个或多个电容器的可疑劣化。该方法可用于电力系统中使用的电源转换器，控制装置或分流电容器或滤波器的保护继电器。

10. 发明授权

US08780591B2 Frequency converter assembly 有权
标题翻译：变频器总成
公开(公告)号：US08780591B2
公开(公告)日：2014-07-15
申请号：US13253396
申请日：2011-10-05
申请人： Osmo Pasuri , Jukka Ylppö
发明人： Osmo Pasuri , Jukka Ylppö
IPC分类号： H02M5/451
CPC分类号： H02M5/458 , H01G11/20 , H02M5/4505 , H02M2001/0032 , Y02B70/16 , Y02E60/13
摘要： A frequency converter assembly including an input for supplying electric power having an input frequency into the frequency converter assembly from a supply network, a direct voltage intermediate circuit having capacitor component, and at least one controllable switch. The switch being electrically positioned between the input and the direct voltage intermediate circuit. The assembly also includes an output for supplying electric power having an output frequency from the frequency converter assembly, and control component arranged to control the at least one controllable switch. The control component provides a recovery function to recover the capacitor component by supplying restricted recovery current from the supply network to the capacitor component through the at least one controllable switch, the control means also prevents supply of electric power from the direct voltage intermediate circuit towards the output during the recovery function.
摘要翻译：一种变频器组件，包括用于从供电网络向频率转换器组件提供具有输入频率的电力的输入，具有电容器部件的直流电压中间电路和至少一个可控开关。该开关电气定位在输入和直流电压中间电路之间。组件还包括用于提供具有来自变频器组件的输出频率的电力的输出和被布置成控制至少一个可控开关的控制部件。控制部件通过至少一个可控开关向供电网络提供限制的恢复电流至电容器部件，提供恢复功能以恢复电容器部件，该控制装置还防止从直流电压中间电路朝向在恢复功能期间输出。

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