-
公开(公告)号：US20140145531A1
公开(公告)日：2014-05-29
申请号：US14091704
申请日：2013-11-27
Applicant: Control Techniques Limited
Inventor： Arnaud Robelin , Jean-Marc Maurice Petillon , Antony John Webster
IPC: H02K11/02
CPC classification number: H02K11/02 , H02K11/024 , H02K11/028 , H02K11/04 , H02M1/12 , H02M1/44 , H02M5/44 , H02M2001/327
Abstract: Conducting emission suppression in a power circuit for an electric motor comprises a negative temperature co-efficient resistor and capacitor connecting one of the power lines to ground. The NTC resistor is self-stabilising so that changes in the load current are automatically compensated for.
Abstract translation: 用于电动机的电力电路中的发射抑制包括负温度系数电阻器和将电力线之一连接到地的电容器。 NTC电阻是自稳定的，从而自动补偿负载电流的变化。
-
公开(公告)号：US09614459B2
公开(公告)日：2017-04-04
申请号：US14446509
申请日：2014-07-30
Applicant: Control Techniques Limited
Inventor： Antony John Webster , Simon David Hart
IPC: H02M3/24 , H02M7/5387 , H02M1/32
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.
-
公开(公告)号：US09531244B2
公开(公告)日：2016-12-27
申请号：US14091704
申请日：2013-11-27
Applicant: Control Techniques Limited
Inventor： Arnaud Robelin , Jean-Marc Maurice Petillon , Antony John Webster
CPC classification number: H02K11/02 , H02K11/024 , H02K11/028 , H02K11/04 , H02M1/12 , H02M1/44 , H02M5/44 , H02M2001/327
Abstract: Conducting emission suppression in a power circuit for an electric motor comprises a negative temperature co-efficient resistor and capacitor connecting one of the power lines to ground. The NTC resistor is self-stabilizing so that changes in the load current are automatically compensated for.
Abstract translation: 用于电动机的电力电路中的发射抑制包括负温度系数电阻器和将电力线之一连接到地的电容器。 NTC电阻是自稳定的，从而自动补偿负载电流的变化。
-
Patent Agency Ranking
公开(公告)号：US20140125262A1
公开(公告)日：2014-05-08
申请号：US14068464
申请日：2013-10-31
Applicant: Control Techniques Limited
Inventor： Simon David Hart , Antony John Webster , Kondala Rao Gandu
IPC: H02P6/00
CPC classification number: H02P6/182 , G01R31/343
Abstract: A circuit for monitoring the operation of an electric motor comprises means for deriving a motor signal indicative of a relatively low frequency characteristic of the motor commutation current (for example the back EMF ripple) by rejecting the high frequency components which are mainly the result of the commutation events. The circuit also includes means for producing a pulse from the low frequency characteristic which has a duration related to the motor speed.
Abstract translation: 用于监视电动机的操作的电路包括用于通过拒绝主要是由于电动机的转换结果的高频分量而导出表示电动机换向电流（例如，反电动势纹波）的较低频率特性的电动机信号的装置 换向事件 该电路还包括用于从具有与电动机速度相关的持续时间的低频特性产生脉冲的装置。
-
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
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。
-
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
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。
-
-
-
-
-
-
-
Search Results
8
records
(took 0.028 seconds)
