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公开(公告)号：US20180366942A1
公开(公告)日：2018-12-20
申请号：US15563009
申请日：2016-03-30
发明人： Robin GUPTA , Robert WHITEHOUSE , Carl BARKER
CPC分类号： H02H7/1216 , H02H1/0007 , H02H7/1255 , H02J3/36 , H02M1/32 , H02M5/4585 , H02M7/32 , Y02E60/60
摘要： A converter apparatus and methods of operation thereof are disclosed. In an example, a converter unit of a bipole converter apparatus comprising a neutral connection having a breaker switch is disclosed. In the event of a DC fault, the fault condition may be monitored and it is determined whether a breaker switch operation condition is met. The breaker switch is opened when the breaker switch operation condition is met. In one example, the breaker switch operation condition may comprise a current level.
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公开(公告)号：US20150198655A1
公开(公告)日：2015-07-16
申请号：US14573759
申请日：2014-12-17
申请人： ROLLS-ROYCE PLC.
发明人： Vaiyapuri VISWANATHAN , Amit Kumar GUPTA , Chandana Jayampathi GAJANAYAKE , Sivakumar NADARAJAN
CPC分类号： G01R31/2632 , G01R23/02 , G01R31/343 , G01R31/40 , H02H7/1255 , H02K11/20
摘要： A method of detecting a diode fault in an AC signal rectifier circuit, the AC signal rectifier circuit including a plurality of diodes, and being arranged to supply a rectified output voltage to a load, wherein the method includes the steps of deriving an operating value indicative of the ratio of the voltage magnitudes of a first harmonic frequency and another harmonic frequency of the rectified output voltage across the load; and determining whether a fault has occurred in one or more diodes on the basis of the derived operating value. The first harmonic frequency is preferably the fundamental harmonic frequency, and/or the another harmonic frequency is preferably the 6th harmonic frequency.
摘要翻译： 一种检测交流信号整流电路中的二极管故障的方法，所述交流信号整流电路包括多个二极管，并且被布置为向负载提供经整流的输出电压，其中所述方法包括以下步骤：导出指示 的一次谐波频率的电压幅度与整个负载的整流输出电压的另一个谐波频率之比; 以及基于导出的操作值来确定在一个或多个二极管中是否发生故障。 一次谐波频率优选为基本谐波频率，和/或另一谐波频率优选为6次谐波频率。
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公开(公告)号：US09036382B2
公开(公告)日：2015-05-19
申请号：US13787291
申请日：2013-03-06
申请人： Bing Li , David Leggate , Timothy Rowan
发明人： Bing Li , David Leggate , Timothy Rowan
CPC分类号： G01R21/06 , G01R19/2513 , G01R31/42 , H02H7/1216 , H02H7/1255 , H02M1/14 , H02M1/32 , H02M5/4585
摘要： Methods and apparatus are presented for detecting phase loss and/or excessive ripple in a power converter, in which bandpass filters are used to obtain harmonic voltage amplitudes associated with the power converter DC bus, and phase loss is detected if a ratio of the second harmonic to the sixth harmonic and/or a ratio of the fourth harmonic to the sixth harmonic exceed predetermined threshold values.
摘要翻译： 提出了用于检测功率转换器中的相位损耗和/或过大纹波的方法和装置，其中使用带通滤波器来获得与功率转换器DC总线相关联的谐波电压幅度，并且如果二次谐波的比率 到第六谐波和/或第四谐波与第六谐波的比率超过预定阈值。
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公开(公告)号：US20150062973A1
公开(公告)日：2015-03-05
申请号：US14391755
申请日：2013-04-04
申请人： Eltek AS
发明人： Erik Myhre , Thomas Olsen , Jan Tore Brastad
CPC分类号： H02M3/33507 , H02H7/1255 , H02M1/32 , H02M1/36 , H02M3/33515 , H02M3/33569 , H02M3/33592 , H02M2001/0032 , H02M2001/0038 , H02M2001/0041 , Y02B70/1433 , Y02B70/1475
摘要： A DC-DC converter device and method for controlling the DC-DC converter device includes controlling gate drivers connected to the respective gate of first and second resonant circuit switches of a resonant circuit, controlling gate drivers connected to the respective gate of first and second rectifier switches of a synchronous rectifier, and detecting whether a shutdown criteria is fulfilled or not. If the shutdown criteria is fulfilled, the method is further includes the step of sending a shutdown signal to a shutdown device.
摘要翻译： 用于控制DC-DC转换器装置的DC-DC转换器装置和方法包括控制连接到谐振电路的第一和第二谐振电路开关的各个栅极的栅极驱动器，控制连接到第一和第二整流器的相应栅极的栅极驱动器 同步整流器的开关，以及是否满足关机标准。 如果满足关机标准，该方法还包括向停机装置发送关机信号的步骤。
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公开(公告)号：US20140240873A1
公开(公告)日：2014-08-28
申请号：US14348981
申请日：2012-08-28
申请人： Takashi Saka
发明人： Takashi Saka
IPC分类号： H02H7/125
CPC分类号： H02H7/1255 , H02H7/1213 , H02M1/32 , H02M3/33523
摘要： A switching power supply circuit includes a transformer having primary, secondary and tertiary windings; a primary-side rectifying-and-smoothing circuit that converts AC power to DC power then smoothes it; a secondary-side rectifying-and-smoothing circuit that smoothes secondary-side power; a tertiary-side rectifying-and-smoothing circuit that smoothes power from the tertiary winding; a switching circuit that switches the primary winding; a pulse width control circuit that controls the switching of the switching circuit; an output-error detecting circuit that detects a deviation of a secondary-side DC output voltage from a reference voltage; and a ripple-voltage detecting-and-controlling circuit that detects a ripple-voltage of the secondary-side DC output voltage and stop-controls the output-error detecting circuit, wherein a stop-control signal from the ripple-voltage detecting-and-controlling circuit causes the output-error detecting circuit to stop outputting, then a drive signal to the switching circuit is stopped, thus the operation of the switching power supply circuit is stopped.
摘要翻译： 开关电源电路包括具有初级，次级和三级绕组的变压器; 将AC电力转换为DC电力的初级侧整流平滑电路，然后使其平滑化; 次级侧整流平滑电路，其平滑二次侧功率; 三次侧整流平滑电路，其使来自三次绕组的功率平滑化; 切换初级绕组的开关电路; 脉冲宽度控制电路，其控制所述开关电路的切换; 输出误差检测电路，检测次级侧直流输出电压与基准电压的偏差; 以及纹波电压检测和控制电路，其检测次级侧DC输出电压的纹波电压并停止控制输出错误检测电路，其中来自纹波电压检测的停止控制信号和 控制电路使输出错误检测电路停止输出，然后停止对开关电路的驱动信号，停止开关电源电路的动作。
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公开(公告)号：US06791852B2
公开(公告)日：2004-09-14
申请号：US09683437
申请日：2001-12-28
IPC分类号： H02H700
CPC分类号： H02H7/1255
摘要： A method is provided for determining a shorted thyristor cell in a bridge that supplies a load from a source, the bridge including a plurality of the thyristor cells. The method includes the step of sequentially gating each of the cells to a conducting state, so that only one cell is gated at one time; providing at least one current transformer in the bridge; generating a current flow that passes through the bridge including the one cell that is gated; observing current in the at least one current transformer to determine a short in one of the cells the that is not gated; and determining a shorted cell based on the step of observing current in the at least one current transformer.
摘要翻译： 提供了一种用于确定从源提供负载的桥中的短路晶闸管单元的方法，所述桥包括多个晶闸管单元。 该方法包括以下步骤：将每个单元顺序地选通到导通状态，使得一次仅门控一个单元; 在桥中提供至少一个电流互感器; 产生通过所述桥的电流，所述电桥包括门控的所述一个电池; 观察所述至少一个电流互感器中的电流以确定不被门控的所述单元之一的短路; 以及基于观察所述至少一个电流互感器中的电流的步骤来确定短路单元。
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公开(公告)号：US20030123267A1
公开(公告)日：2003-07-03
申请号：US09683437
申请日：2001-12-28
IPC分类号： H02H007/122
CPC分类号： H02H7/1255
摘要： A method is provided for determining a shorted thyristor cell in a bridge that supplies a load from a source, the bridge including a plurality of the thyristor cells. The method includes the step of sequentially gating each of the cells to a conducting state, so that only one cell is gated at one time; providing at least one current transformer in the bridge; generating a current flow that passes through the bridge including the one cell that is gated; observing current in the at least one current transformer to determine a short in one of the cells the that is not gated; and determining a shorted cell based on the step of observing current in the at least one current transformer.
摘要翻译： 提供了一种用于确定从源提供负载的桥中的短路晶闸管单元的方法，所述桥包括多个晶闸管单元。 该方法包括以下步骤：将每个单元顺序地选通到导通状态，使得一次仅门控一个单元; 在桥中提供至少一个电流互感器; 产生通过所述桥的电流，所述电桥包括门控的所述一个电池; 观察所述至少一个电流互感器中的电流以确定不被门控的所述单元之一的短路; 以及基于观察所述至少一个电流互感器中的电流的步骤来确定短路单元。
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8.发明授权
公开(公告)号：US5617013A
公开(公告)日：1997-04-01
申请号：US409187
申请日：1995-03-23
申请人： Daniele Cozzi
发明人： Daniele Cozzi
CPC分类号： H02M1/4225 , H02H7/1255 , H02M1/32 , Y02B70/126
摘要： In a power supply with a boost pre-regulator and power factor correction devices the voltage induced in an auxiliary winding magnetically coupled to the inductor of the pre-regulator and rectified by a diode bridge charges an integrating capacitor, shunted by a discharging resistor, to a voltage which compared with predetermined reference voltages allows to detect and to signal anomalous operative conditions, such as overload or unoperativeness of the power factor correction devices for the execution of suitable intervention procedures.
摘要翻译： 在具有升压预调节器和功率因数校正装置的电源中，在磁耦合到预调节器的电感器并由二极管桥整流的辅助绕组中感应的电压将由放电电阻分流的积分电容器充电到 与预定的参考电压相比较的电压允许检测和发出异常的操作条件，例如用于执行适当的干预程序的功率因数校正装置的过载或不可操作性。
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公开(公告)号：US4713652A
公开(公告)日：1987-12-15
申请号：US799643
申请日：1985-11-19
申请人： Steven J. French , David L. Neasham
发明人： Steven J. French , David L. Neasham
CPC分类号： H02H7/1255 , G01R31/026
摘要： An electrical apparatus for monitoring electrical continuity includes a number of input circuits each associated with a respective arm of a multi-phase rectifier circuit the continuity of which is to be monitored. Each input circuit includes a comparator which generates a train of pulses P while an input current persists in the arm. If a discontinuity arises in an arm for a first preset interval of time a monostable in that arm generates a first trigger signal. If the discontinuity persists for a further preset interval of time another monostable, common to all the arms, triggers an alarm via a bistable circuit.
摘要翻译： 用于监测电气连续性的电气设备包括多个输入电路，每个输入电路与多相整流电路的相应臂相关联，其连续性将被监控。 每个输入电路包括在输入电流持续在臂中时产生一串脉冲P的比较器。 如果在第一预设间隔时间内在臂中出现不连续，则该臂中的单稳态产生第一触发信号。 如果不连续性持续进一步预设的时间间隔，则所有臂共同的另一个单稳态触发器通过双稳态电路触发报警。
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公开(公告)号：US3968418A
公开(公告)日：1976-07-06
申请号：US532210
申请日：1974-12-12
申请人： Per Kain , Kjeld Thorborg
发明人： Per Kain , Kjeld Thorborg
CPC分类号： H02H7/1255 , H02H3/13
摘要： A convertor connection for connection to a DC circuit includes current sensing members for forming a quantity corresponding to the direct current of the convertor connection. An indicating arrangement is provided for indicating asymmetrical operating conditions, which includes a first band pass filter connecting to the current sensing members which let through frequencies in a frequency band located between zero and the fundamental frequency of the AC component during undisturbed operation. When the output signal of the first filter exceeds a predetermined value, through a second filter an asymmetry indicating signal is emitted. The release of an output signal is prevented by a delay arrangement if the duration of the asymmetrical operating condition is less than a predetermined time.
摘要翻译： 用于连接到DC电路的转换器连接包括用于形成与转换器连接的直流相对应的量的电流感测部件。 提供了用于指示不对称操作条件的指示装置，其包括连接到电流感测构件的第一带通滤波器，其在不受干扰的操作期间使位于零频率和频率的频率之间的频率与AC分量的基频之间。 当第一滤波器的输出信号超过预定值时，通过第二滤波器发出不对称指示信号。 如果不对称操作条件的持续时间小于预定时间，则通过延迟布置来防止输出信号的释放。
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