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：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：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。