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1. 发明授权

US06590757B2 Method and apparatus for detecting and suppressing a parallel arc fault 有权
标题翻译：用于检测和抑制并联电弧故障的方法和装置
公开(公告)号：US06590757B2
公开(公告)日：2003-07-08
申请号：US09967116
申请日：2001-09-28
申请人： Birger Pahl , Ronald R. Jahn , William E. Berkopec , Slobodan Krstic , Joseph C. Zuercher , Jerome K. Hastings
发明人： Birger Pahl , Ronald R. Jahn , William E. Berkopec , Slobodan Krstic , Joseph C. Zuercher , Jerome K. Hastings
IPC分类号： H02N308
CPC分类号： H02H3/0935 , H02H1/0015
摘要： Electrical equipment (14) is safeguarded from damage due to parallel arc faults by a circuit that provides several levels of protection. A semiconductor switch (18) and a current sensor (24) are placed in series with the electrical equipment (14). When the current to the equipment exceeds a first threshold for a predefined period of time, the semiconductor switch (18) is rendered non-conductive until the circuit is specifically reset. When the current to the equipment exceeds a greater second threshold, a pulsed signal alternately places the semiconductor switch (18) in conductive and non-conductive states so that the average current applied to the equipment (14) is within an acceptable level. The pulses are measured to determine whether a parallel arc fault has occurred. When the measured pulses (74) are within a predetermined range, a parallel arc fault is declared and the semiconductor switch (18) is rendered non-conductive. Should the current exceed an even greater third threshold, the semiconductor switch (18) is immediately rendered non-conductive until the circuit is manually reset.
摘要翻译：电气设备（14）通过提供多级保护的电路可以避免由于并联电弧故障造成的损坏。半导体开关（18）和电流传感器（24）与电气设备（14）串联放置。当到设备的电流超过预定时间段的第一阈值时，半导体开关（18）变为不导通，直到电路被特别复位。当到设备的电流超过更大的第二阈值时，脉冲信号交替地将半导体开关（18）置于导电和非导通状态，使得施加到设备（14）的平均电流在可接受的水平内。测量脉冲以确定是否发生并联电弧故障。当测量的脉冲（74）在预定范围内时，声明并联电弧故障，并使半导体开关（18）变为不导通。如果电流超过了更大的第三阈值，则半导体开关（18）立即变为不导通，直到电路被手动复位。

2. 发明授权

US4549122A Method and circuit for DC motor field regulation with speed feedback 失效
标题翻译：直流电机现场调节与速度反馈的方法和电路
公开(公告)号：US4549122A
公开(公告)日：1985-10-22
申请号：US532067
申请日：1983-09-14
申请人： William E. Berkopec , James A. Burns
发明人： William E. Berkopec , James A. Burns
IPC分类号： H02P7/298 , H02P5/06
CPC分类号： H02P7/2985 , Y10S388/902 , Y10S388/917
摘要： A method and a circuit for motor field regulation in the constant horsepower speed range, wherein the weakening of field current allows operation of the motor at speeds higher than the base speed while maintaining rated armature voltage. The field current is weakened in response to speed feedback signals to provide a rapid response in controlling field current. The motor field is also regulated in response to a counter-EMF and IR compensation circuit to further weaken the field current, where the counter-EMF developed in the DC motor would cause excessive voltage across the armature.
摘要翻译：一种用于恒功率转速范围内的电动机场调节的方法和电路，其中励磁电流的弱化允许电动机以高于基本速度的速度运行，同时保持额定的电枢电压。响应于速度反馈信号，励磁电流被削弱以在控制励磁电流中提供快速响应。电动机场也响应于反电动势和IR补偿电路进行调节，以进一步削弱励磁电流，其中在直流电动机中产生的反电动势将在电枢两端产生过大的电压。

3. 发明授权

US06188552B1 High resistance grounding systems for oil well electrical systems 有权
标题翻译：油井电气系统的高电阻接地系统
公开(公告)号：US06188552B1
公开(公告)日：2001-02-13
申请号：US09130568
申请日：1998-08-07
申请人： James R. Jaeschke , William E. Berkopec , David D. Shipp , Martin Baier
发明人： James R. Jaeschke , William E. Berkopec , David D. Shipp , Martin Baier
IPC分类号： H02H316
CPC分类号： H02H9/08 , E21B43/128 , E21B47/122
摘要： A normally ungrounded power system for a oil well is provided which includes a power transformer above ground and a pump motor below ground. There is provided a signal system which includes a below ground sensor system and an above ground signal conditioning and monitoring unit where the sensor system utilizes the main power lines for carrying the sensor signals. A connectable high resistance grounding scheme is provided to the aforementioned floating system, so that in the event of a arcing ground fault or similar occurrence the system may be immediately grounded, thus compensating for the effects of the arcing ground fault and providing personnel safety and electrical equipment protection. When the high resistance grounding system is not utilized the aforementioned signals from the sensors are easily carried by the power conductors.
摘要翻译：提供一个用于油井的通常不接地的电力系统，其包括地面上的电力变压器和地下的泵电动机。提供了一种信号系统，其包括地下传感器系统和地面信号调理和监测单元，其中传感器系统利用主电力线传送传感器信号。对上述浮动系统提供可连接的高电阻接地方案，使得在发生电弧接地故障或类似发生的情况下，系统可以立即接地，从而补偿电弧接地故障的影响并提供人员安全和电气设备保护。当不使用高电阻接地系统时，来自传感器的上述信号容易被电力导体承载。

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