公开(公告)号：US09509222B2

公开(公告)日：2016-11-29

申请号：US13887851

申请日：2013-05-06

Applicant: Control Techniques Limited

Inventor： Simon David Hart ,  Stephen Berry ,  Richard Mark Wain ,  Dhananjay Dattatray Kapatkar ,  Dilesh Arvind Raut

IPC: H02M3/335 ,  H02J3/14

CPC classification number: H02M3/33561 ,  H02M3/33569 ,  Y10T307/406

Abstract: The present disclosure relates to a power conversion system comprising a transformer comprising first, second, and third inductive coupling elements, a first power supply arranged to provide a voltage across the first coupling element, a second power supply arranged to provide a voltage across the second coupling element, an output arranged to receive a voltage from the third coupling element. In use, the voltage across the first coupling element and the voltage across the second coupling element are arranged to induce a voltage in the third coupling element. The system also comprises a control arrangement arranged to independently control the operation of the first and second power supplies.

Abstract translation: 本公开涉及一种功率转换系统，其包括变压器，该变压器包括第一，第二和第三感应耦合元件，布置成提供跨越第一耦合元件的电压的第一电源，布置成提供跨越第二 耦合元件，被布置为从第三耦合元件接收电压的输出。 在使用中，第一耦合元件两端的电压和第二耦合元件两端的电压被布置成在第三耦合元件中感应电压。 该系统还包括控制装置，其被布置为独立地控制第一和第二电源的操作。

公开(公告)号：US20140321179A1

公开(公告)日：2014-10-30

申请号：US14264649

申请日：2014-04-29

Applicant: CONTROL TECHNIQUES LIMITED

Inventor： Simon David Hart

IPC: H02M7/5387

CPC classification number: H02M7/53871 ,  H02J3/381 ,  H02J3/40

Abstract: A method, apparatus, computer readable medium, and system for synchronising a power source with a three-phase electricity grid for the power source to supply electricity to the electricity grid is disclosed. The method comprises operating a first switching unit to disconnect a power source from an interfacing circuit. The interfacing circuit comprises a DC-to-AC converter arranged between the power source and a three-phase electricity grid for converting a DC voltage received from the power source to a three-phase AC voltage for supplying the electricity grid, an electrical storage unit connected across the DC-to-AC converter, and a resistance which is selectably connectable in parallel with the electrical storage unit across the DC-to-AC converter, operating a second switching unit to connect the electricity grid to the interfacing circuit, wherein the electrical storage unit is electrically coupled to the electricity grid through the DC-to-AC converter. The method further comprises connecting the resistance to and disconnecting the resistance from the electricity grid through the DC-to-AC converter when the second switching unit is connecting the electricity grid to the interfacing circuit. In addition, the method comprises monitoring one or more electrical characteristics of the interfacing circuit in accordance with the connection and disconnection of the resistance. Furthermore, the method comprises determining one or more electrical characteristics of the three-phase electricity grid in accordance with the monitored electrical characteristics of the interfacing circuit.

Abstract translation: 公开了一种方法，装置，计算机可读介质和系统，用于使电源与用于电源的三相电网同步以向电网供电。 该方法包括操作第一切换单元以从接口电路断开电源。 该接口电路包括一个直流到交流转换器，它布置在电源和三相电网之间，用于将从电源接收的直流电压转换成用于供电的三相交流电压;电存储单元 连接在DC-AC转换器之间，以及电阻，其可选择地与跨过DC-AC转换器的蓄电单元并联连接，操作第二开关单元以将电网连接到接口电路，其中， 电气存储单元通过DC-AC转换器电耦合到电网。 该方法还包括当第二开关单元将电网连接到接口电路时，通过DC-AC转换器将电阻连接到电网与电网断开。 此外，该方法包括根据电阻的连接和断开来监测接口电路的一个或多个电特性。 此外，该方法包括根据监控的接口电路的电特性来确定三相电网的一个或多个电特性。

公开(公告)号：US20130313905A1

公开(公告)日：2013-11-28

申请号：US13887851

申请日：2013-05-06

Applicant: Control Techniques Limited

Inventor： Simon David Hart ,  Stephen Berry ,  Richard Mark Wain ,  Dhananjay Dattatray Kapatkar ,  Dilesh Arvind Raut

IPC: H02M3/335

CPC classification number: H02M3/33561 ,  H02M3/33569 ,  Y10T307/406

Abstract: The present disclosure relates to a power conversion system comprising a transformer comprising first, second, and third inductive coupling elements, a first power supply arranged to provide a voltage across the first coupling element, a second power supply arranged to provide a voltage across the second coupling element, an output arranged to receive a voltage from the third coupling element. In use, the voltage across the first coupling element and the voltage across the second coupling element are arranged to induce a voltage in the third coupling element. The system also comprises a control arrangement arranged to independently control the operation of the first and second power supplies.

Abstract translation: 本公开涉及一种功率转换系统，其包括变压器，该变压器包括第一，第二和第三感应耦合元件，布置成提供跨越第一耦合元件的电压的第一电源，布置成提供跨越第二 耦合元件，被布置为从第三耦合元件接收电压的输出。 在使用中，第一耦合元件两端的电压和第二耦合元件两端的电压被布置成在第三耦合元件中感应电压。 该系统还包括控制装置，其被布置为独立地控制第一和第二电源的操作。

公开(公告)号：US20150061639A1

公开(公告)日：2015-03-05

申请号：US14455514

申请日：2014-08-08

Applicant: Control Techniques Limited

Inventor： Antony John Webster ,  Simon David Hart

IPC: G01R23/00

CPC classification number: G01R23/00 ,  H02M1/38 ,  H02M7/5395 ,  H02M2001/0009 ,  H02M2001/385

Abstract: A method is provided of determining a time interval between switching events for a switching device in a power converter, the switching device being for coupling a direct current (DC) source to provide an alternating current (AC) output at a particular switching frequency. The method comprises selecting an initial length of a time interval between a first switching event and a second, subsequent switching event for the switching device and obtaining a current measurement value for the switching device when the time interval between the first switching event and the second, subsequent switching event takes said initial length. The method further comprises changing the length of the time interval between the first switching event and the second, subsequent switching event and obtaining a current measurement value for the switching device when the length of the time interval is changed. The current measurement values which have been obtained are used to detect generation of a current in the switching device. It is then determined, from the change made to the length of the time interval and the current measurement values obtained, a length (tg) of the time interval at which said generation of a current in the switching device occurs.

Abstract translation: 提供了一种确定功率转换器中的开关装置的开关事件之间的时间间隔的方法，所述开关装置用于耦合直流（DC）源以在特定开关频率处提供交流（AC）输出。 所述方法包括：当所述第一切换事件与所述第二切换事件之间的时间间隔为所述切换装置时，选择所述切换装置的第一切换事件和第二切换事件之间的时间间隔的初始长度，并获得所述切换装置的当前测量值， 随后的切换事件采取所述初始长度。 所述方法还包括：当所述时间间隔的长度改变时，改变所述第一切换事件与所述第二切换事件之间的时间间隔的长度，并获得所述切换装置的当前测量值。 已经获得的当前测量值用于检测开关装置中的电流的产生。 然后，根据所获得的时间间隔长度和当前测量值的变化，确定开关装置中的电流产生的时间间隔的长度（tg）。

公开(公告)号：US20150036400A1

公开(公告)日：2015-02-05

申请号：US14446509

申请日：2014-07-30

Applicant: Control Techniques Limited

Inventor： Antony John Webster ,  Simon David Hart

IPC: H02M7/5387

CPC classification number: H02M7/53871 ,  H02M1/32 ,  H02M7/5387 ,  H02M2001/327

Abstract: There is provided a method and control system for controlling a switching device in a power converter according to a modulation scheme. The switching device couples a direct current (DC) source to provide an alternating current (AC) output at a particular switching frequency. The method comprises the step of, in each switching period, switching the switching device between active configurations providing a finite voltage at the output and inactive configurations providing a zero voltage at the output. The ratio between the total period of time in which the switching device is in an active configuration and the total period of time in which the switching device is in an inactive configuration is the same for each switching period and is determined according to the desired voltage at the AC output. However, in each switching period, there are at least two time periods in which the switching device is in an inactive configuration, and the ratio between those at least two time periods is changed in dependence on temperature associated with the switching device.

Abstract translation: 提供了一种用于根据调制方案来控制功率转换器中的开关装置的方法和控制系统。 开关器件耦合直流（DC）源，以在特定的开关频率提供交流（AC）输出。 该方法包括以下步骤：在每个开关周期中，在输出端提供有限电压的有源配置和在输出端提供零电压的非活动配置之间切换开关装置。 开关器件处于有效配置的总时间段与开关器件处于非激活配置的总时间之间的比率对于每个开关周期是相同的，并且根据期望的电压被确定 交流输出。 然而，在每个切换周期中，存在至少两个时间段，其中开关装置处于非活动配置，并且至少两个时间段之间的比率根据与切换装置相关联的温度而改变。

公开(公告)号：US20140293665A1

公开(公告)日：2014-10-02

申请号：US14228953

申请日：2014-03-28

Applicant: Control Techniques Limited

Inventor： Simon David Hart ,  Antony John Webster ,  Kondala Rao Gandu

IPC: H02M1/36

CPC classification number: H02M1/36 ,  H02M1/32 ,  H02M7/062

Abstract: A damage limitation approach comprising determining that a voltage produced by a rectifier circuit is indicative of a fault and consequently controlling a switch operable to bypass a resistive element of a circuit via which the rectifier circuit is supplied.

Abstract translation: 一种损伤限制方法，包括确定由整流器电路产生的电压指示故障，并因此控制可操作以绕过提供整流器电路的电路的电阻元件的开关。

公开(公告)号：US20140117905A1

公开(公告)日：2014-05-01

申请号：US14063532

申请日：2013-10-25

Applicant: Control Techniques Limited

Inventor： Simon David Hart

IPC: H02P25/02

CPC classification number: H02P25/022 ,  H02P23/20 ,  H02P23/26 ,  H02P25/024

Abstract: A method arranged to control a motor for driving a load is disclosed. The motor and load form at least a part of a system and the motor comprises a stator arranged to produce a varying magnetic field responsive to an applied AC voltage and a rotor arranged to rotate responsive to the varying magnetic field produced by the stator, the rotor rotating at a speed synchronised to a frequency of the applied AC voltage. The method comprises receiving a target rotor speed, determining a voltage level for the applied AC voltage for producing a magnetic field having magnetic flux of sufficient magnitude to maintain the rotor in synchronisation with the frequency of the applied AC voltage when rotating at the target speed of rotation. The voltage level is determined in accordance with the target rotor speed and a model of the system. The model comprising a plurality of model elements, wherein one or more of the model elements is indicative of an effect of one or more parts of the system on rotation of the rotor when the speed of the rotor is constant and one or more of the model elements are indicative of an effect of one or more parts of the system on rotation of the rotor when the speed of the rotor is dynamic. The method further comprising applying the applied AC voltage to the stator at the determined voltage level and at a frequency required to provide the target rotor speed.

Abstract translation: 公开了一种布置成控制用于驱动负载的电动机的方法。 电动机和负载形成系统的至少一部分，并且电动机包括定子，其布置成响应于所施加的AC电压产生变化的磁场，以及转子，其布置成响应于由定子产生的变化的磁场而旋转，转子 以与所施加的AC电压的频率同步的速度旋转。 该方法包括接收目标转子速度，确定所施加的AC电压的电压电平，以产生具有足够大的磁通量的磁场，以在以目标速度转动时转子与施加的交流电压的频率同步 回转。 电压电平根据目标转子速度和系统的型号确定。 该模型包括多个模型元件，其中当转子的速度恒定时，模型元件中的一个或多个指示系统的一个或多个部分对转子旋转的影响，并且模型中的一个或多个 元件表示当转子的速度是动态时系统的一个或多个部分对转子的旋转的影响。 该方法还包括将所施加的交流电压施加到所确定的电压电平和以提供目标转子速度所需的频率的定子。

公开(公告)号：US20140049999A1

公开(公告)日：2014-02-20

申请号：US13969992

申请日：2013-08-19

Applicant: Control Techniques Limited

Inventor： Simon David Hart

IPC: H02M7/539

CPC classification number: H02M7/539 ,  H02M7/53875 ,  H02M2007/53876

Abstract: There is provided a method and control system for reducing noise in a power converter by controlling a switching device in the power converter according to a modulation scheme. The switching device couples a direct current (DC) source to provide an alternating current (AC) output at a particular switching frequency. The method comprises the step of, in each switching period, switching the switching device between active configurations providing a finite voltage at the output and inactive configurations providing a zero voltage at the output. The ratio between the total period of time in which the switching device is in an active configuration and the total period of time in which the switching device is in an inactive configuration is the same for each switching period and is determined according to the desired voltage at the AC output.

Abstract translation: 提供了一种通过根据调制方式控制功率转换器中的开关装置来降低功率转换器中的噪声的方法和控制系统。 开关器件耦合直流（DC）源，以在特定的开关频率提供交流（AC）输出。 该方法包括以下步骤：在每个开关周期中，在输出端提供有限电压的有源配置和在输出端提供零电压的非活动配置之间切换开关装置。 开关器件处于有效配置的总时间段与开关器件处于非激活配置的总时间之间的比率对于每个开关周期是相同的，并且根据期望的电压 交流输出。

公开(公告)号：US20140285179A1

公开(公告)日：2014-09-25

申请号：US14206824

申请日：2014-03-12

Applicant: Control Techniques Limited

Inventor： Simon David Hart

IPC: G01R19/10

CPC classification number: G01R19/0092 ,  G01R19/25 ,  H02M7/5387 ,  H02M2001/0009

Abstract: A method and a control system for a multiphase-phase inverter system, the control system comprising an electric current detection circuit and a processor, wherein each phase of an electrical cycle is separated into a plurality of sections, inputs from the electric current detection circuit are received, each input indicating a measured phase current, and a phase current is calculated in each section, wherein the phase current calculation in at least one of the sections is determined from a changing ratio of the value of the phase current calculated from the measured values of the other phase currents in the multiphase system and the measured value of the phase.

Abstract translation: 一种用于多相逆变器系统的方法和控制系统，所述控制系统包括电流检测电路和处理器，其中电周期的每个相分成多个部分，来自电流检测电路的输入 接收，每个输入指示测量的相电流，并且在每个部分中计算相电流，其中至少一个部分中的相电流计算根据从测量值计算的相电流的值的变化比确定 的多相系统中的其他相电流和相的测量值。

公开(公告)号：US20140153140A1

公开(公告)日：2014-06-05

申请号：US14093670

申请日：2013-12-02

Applicant: Control Techniques Limited

Inventor： Simon David Hart ,  Antony John Webster ,  Kondala Rao Gandu

IPC: H02H3/20

CPC classification number: H02H3/202 ,  H02H9/001

Abstract: A power supply arranged to charge a smoothing capacitance via a resistive element for soft-starting in the event that one or more conditions for normal operation are not complied with is arranged to detect that a voltage across at least part of the smoothing capacitance exceeds an excess voltage threshold and, responsive to the detecting, interrupt charging of the smoothing capacitance via the resistive element for soft-starting.

Abstract translation: 布置成在不符合正常操作的一个或多个条件的情况下通过用于软启动的电阻元件对平滑电容进行充电的电源被布置成检测到平滑电容的至少一部分上的电压超过过量 电压阈值，并且响应于检测，通过用于软启动的电阻元件中断平滑电容的中断充电。