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1.发明申请System and method for determining harmonic contributions from non-linear loads without disconnecting any load 有权用于确定非线性负载的谐波贡献而不断开任何负载的系统和方法公开(公告)号：US20060173640A1
公开(公告)日：2006-08-03
申请号：US11337630
申请日：2006-01-23
申请人： Ronald Harley , Deepakraj Divan , Franklin Lambert , Joy Mazumdar
发明人： Ronald Harley , Deepakraj Divan , Franklin Lambert , Joy Mazumdar
IPC分类号： G01R15/00
CPC分类号： H02M1/12 , Y10S706/915
摘要： A system and method for determining non-linear load harmonics impact on the voltage distortion at the point of common coupling is disclosed. Briefly described, one embodiment is a method comprising metering voltage on an electric power system; metering current on the electric power system; determining a predicted voltage based upon the metered current; comparing the predicted voltage with the metered voltage; and determining a harmonic voltage component using a plurality of weights determined when the predicted voltage converges with the metered voltage.
摘要翻译： 公开了用于确定非线性负载谐波对公共耦合点处的电压失真的影响的系统和方法。 简要描述，一个实施例是一种方法，其包括在电力系统上计量电压; 电力系统上的计量电流; 基于计量电流确定预测电压; 将预测电压与计量电压进行比较; 以及使用当预测电压与计量电压收敛时确定的多个权重来确定谐波电压分量。
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2.发明申请System and method for determining harmonic contributions from non-linear loads 失效用于确定非线性负载的谐波贡献的系统和方法公开(公告)号：US20050057265A1
公开(公告)日：2005-03-17
申请号：US10940101
申请日：2004-09-14
申请人： Ronald Harley , Thomas Habelter , Franklin Lambert , Joy Mazumdar
发明人： Ronald Harley , Thomas Habelter , Franklin Lambert , Joy Mazumdar
IPC分类号： G01R20060101 , H02M1/12
CPC分类号： H02M1/12 , Y10S706/915
摘要： A system and method for determining harmonics caused by non-linear loads are disclosed. Briefly described, one embodiment is a method comprising metering voltage on an electric power system; metering current on the electric power system; determining a predicted current based upon the metered voltage; comparing the predicted current with the metered current; and determining a harmonic current component using a plurality of weights determined when the predicted current converges with the metered current.
摘要翻译： 公开了一种用于确定由非线性负载引起的谐波的系统和方法。 简要描述，一个实施例是一种方法，其包括在电力系统上计量电压; 电力系统上的计量电流; 基于计量电压确定预测电流; 将预测电流与计量电流进行比较; 以及使用当预测电流与计量电流收敛时确定的多个权重来确定谐波电流分量。
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3.发明授权System and method for reinjection of retard energy in a trolley-based electric mining haul truck 有权在基于手推车的电动挖掘运输车中再延迟能量的系统和方法公开(公告)号：US08550008B2
公开(公告)日：2013-10-08
申请号：US13425927
申请日：2012-03-21
申请人： Joy Mazumdar , Walter Koellner
发明人： Joy Mazumdar , Walter Koellner
IPC分类号： B60L11/00
CPC分类号： B60M3/06 , B60L7/10 , B60L11/123 , B60L2200/40 , B60L2200/44 , B60M7/00 , H02J3/38 , H02J7/28 , H02J7/34 , H02J7/345 , Y02E60/721 , Y02P90/60 , Y02T10/6217 , Y02T10/7005 , Y02T10/7022 , Y02T10/7077 , Y04S10/126
摘要： Retard energy regenerated from an electrical motor during braking action is reinjected into a power system via trolley lines. The retard energy may be transmitted to a bidirectional electric substation and returned to a utility grid. The retard energy may also be transmitted to an auxiliary energy storage system, such as an ultracapacitor system or a battery system. Installing trolley lines for mining haul trucks on a downhill slope may be used to capture and re-use substantial quantities of retard energy.
摘要翻译： 在制动动作期间从电动机再生的能量阻止通过电车线重新注入电力系统。 延迟能量可以传输到双向变电站并返回到公用电网。 延迟能量也可以传输到诸如超级电容器系统或电池系统的辅助能量存储系统。 在斜坡上安装采矿拖车的小车线可用于捕获和重复使用大量的延迟能量。
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公开(公告)号：US08536814B2
公开(公告)日：2013-09-17
申请号：US13466802
申请日：2012-05-08
IPC分类号： H02P1/00
CPC分类号： H02P5/74 , E02F9/207 , E02F9/2091
摘要： The maximum electrical power drawn from an electrical power source by a mining excavator comprising electric motors is reduced by supplying supplementary electrical power from an electrical energy storage unit. The input electrical power drawn by the mining excavator is cyclic. An upper limit is set for the electrical power drawn from the electrical power source. When the input electrical power drawn by the mining excavator exceeds the upper limit, electrical power is supplied by the electrical energy storage unit, such as an ultracapacitor bank. The ultracapacitor bank may be charged by the electrical power source during off-peak intervals. Electrical power generated by electrical motors operating in a regeneration interval may also be recaptured and stored in the electrical energy storage unit.
摘要翻译： 通过从电能存储单元提供补充电力来减少由包括电动机的采矿挖掘机从电源引出的最大电功率。 采矿挖掘机的输入电力是循环的。 从电源抽取的电力设定上限。 当采矿挖掘机抽取的输入电力超过上限时，由诸如超级电容器组之类的电能存储单元供电。 在非高峰期间，超级电容器组可能由电源充电。 在再生间隔中工作的电动机产生的电力也可以被重新捕获并存储在电能存储单元中。
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5.发明授权公开(公告)号：US08847524B2
公开(公告)日：2014-09-30
申请号：US13248527
申请日：2011-09-29
申请人： Joy Mazumdar
发明人： Joy Mazumdar
IPC分类号： H02P3/14
CPC分类号： B60L1/02 , B60L3/003 , B60L3/0069 , B60L7/06 , B60L2200/26 , B60L2200/40 , B60L2210/30 , B60L2210/40 , B60L2240/36 , B60L2240/662 , B60L2250/12 , B60L2250/16 , B60L2270/145 , H02P3/22 , Y02T10/642 , Y02T10/7241 , Y02T10/7291 , Y02T90/16
摘要： Braking current generated by an electrical motor on mining equipment during a retard interval is switched through one or more grid resistors that are liquid cooled. Under low ambient temperatures, a heating current can be switched through the grid resistors when the electrical motor is not operating in a retard interval. An integrated cooling system can be used to cool grid resistors and power modules. Heat dissipated by the grid resistors and the power modules can be circulated through auxiliary heating loops to heat portions of the mining equipment under low ambient temperatures. Multiple liquid-cooled power modules, liquid-cooled grid resistors, auxiliary heating loops, control modules, radiators, and pumps can be coupled by a liquid distribution system with various combinations of parallel and serial branches. Temperature, pressure, and flow rate in each branch can be independently controlled. Operation of the integrated cooling system can be controlled by a computational system.
摘要翻译： 在延迟间隔期间由采矿设备上的电动机产生的制动电流通过一个或多个液体冷却的电网电阻来切换。 在低环境温度下，当电动机不在延迟时间间隔内工作时，加热电流可通过电网电阻切换。 集成冷却系统可用于冷却电网电阻和电源模块。 电网电阻和功率模块散热的热量可通过辅助加热回路循环，以在低环境温度下加热采矿设备的部分。 多个液冷电源模块，液冷栅格电阻，辅助加热回路，控制模块，散热器和泵可以通过具有并联和串行分支的各种组合的液体分配系统耦合。 每个分支中的温度，压力和流量可以独立控制。 集成冷却系统的运行可以通过计算系统进行控制。
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公开(公告)号：US08803468B2
公开(公告)日：2014-08-12
申请号：US12897163
申请日：2010-10-04
申请人： Joy Mazumdar
发明人： Joy Mazumdar
CPC分类号： H02P27/06 , H02P25/024 , H02P29/0241
摘要： High-power synchronous motors are commonly used in mining operations, for example, in gearless draglines, gearless conveyor drives, and gearless mill drives. Substantial electromagnetic energy is stored in the inductive field windings. In the event of a system fault, such as a short in the direct current power source exciting the field windings, the electromagnetic energy needs to be discharged from the field windings. This electromagnetic energy is typically dissipated as waste heat through a resistor. Disclosed is a field discharge system in which the electromagnetic energy is captured and stored as electrical energy in a capacitor. If an ultracapacitor bank is used for storage, the charged ultracapacitor bank can be used as a backup or auxiliary power source for mining operations. The discharge time is sufficiently small that high speed circuit breakers are not needed to disconnect stator windings from the alternating current power source when a fault occurs.
摘要翻译： 大功率同步电动机通常用于采矿作业中，例如无齿轮拖拉机，无齿轮输送机驱动装置和无齿轮磨机驱动装置。 电磁场绕组中存在大量电磁能。 在发生系统故障的情况下，例如直流电源短路励磁绕组，电磁能需要从励磁绕组放电。 这种电磁能量通常通过电阻器作为废热消散。 公开了一种场放电系统，其中电磁能被捕获并作为电能存储在电容器中。 如果超级电容器组用于存储，则充电的超级电容器组可用作采矿作业的备用或辅助电源。 放电时间足够小，因此当发生故障时，不需要高速断路器将定子绕组与交流电源断开。
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公开(公告)号：US20100289443A1
公开(公告)日：2010-11-18
申请号：US12466722
申请日：2009-05-15
IPC分类号： H02P7/18
CPC分类号： H02P5/74 , E02F9/207 , E02F9/2091
摘要： The maximum electrical power drawn from an electrical power source by a mining excavator comprising electric motors is reduced by supplying supplementary electrical power from an electrical energy storage unit. The input electrical power drawn by the mining excavator is cyclic. An upper limit is set for the electrical power drawn from the electrical power source. When the input electrical power drawn by the mining excavator exceeds the upper limit, electrical power is supplied by the electrical energy storage unit, such as an ultracapacitor bank. The ultracapacitor bank may be charged by the electrical power source during off-peak intervals. Electrical power generated by electrical motors operating in a regeneration interval may also be recaptured and stored in the electrical energy storage unit.
摘要翻译： 通过从电能存储单元提供补充电力来减少由包括电动机的采矿挖掘机从电源引出的最大电功率。 采矿挖掘机的输入电力是循环的。 从电源抽取的电力设定上限。 当采矿挖掘机抽取的输入电力超过上限时，由诸如超级电容器组之类的电能存储单元供电。 在非高峰期间，超级电容器组可能由电源充电。 在再生间隔中工作的电动机产生的电力也可以被重新捕获并存储在电能存储单元中。
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8.发明授权公开(公告)号：US08550007B2
公开(公告)日：2013-10-08
申请号：US12604571
申请日：2009-10-23
申请人： Joy Mazumdar , Walter Köllner
发明人： Joy Mazumdar , Walter Köllner
IPC分类号： B60L11/00
CPC分类号： B60M3/06 , B60L7/10 , B60L11/123 , B60L2200/40 , B60L2200/44 , B60M7/00 , H02J3/38 , H02J7/28 , H02J7/34 , H02J7/345 , Y02E60/721 , Y02P90/60 , Y02T10/6217 , Y02T10/7005 , Y02T10/7022 , Y02T10/7077 , Y04S10/126
摘要： Retard energy regenerated from an electrical motor during braking action is reinjected into a power system via trolley lines. The retard energy may be transmitted to a bidirectional electric substation and returned to a utility grid. The retard energy may also be transmitted to an auxiliary energy storage system, such as an ultracapacitor system or a battery system. Installing trolley lines for mining haul trucks on a downhill slope may be used to capture and re-use substantial quantities of retard energy.
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公开(公告)号：US08466636B2
公开(公告)日：2013-06-18
申请号：US12897115
申请日：2010-10-04
申请人： Joy Mazumdar
发明人： Joy Mazumdar
IPC分类号： H02P1/54
CPC分类号： B60L11/1803 , B60L3/0061 , B60L3/0092 , B60L2200/40 , E02F9/207 , Y02T10/646 , Y02T10/7005
摘要： An excavator drive system wherein one of a pair of propulsion motors shares one of a pair of inverter power sources with another of a pair of motors dedicated to crowd and hoist motions. A pair of non-volatile bi-state switches, triggered under control of a controller, allow sharing of inverters between hoist and propel 1 motors. Another pair of switches allows inverter sharing between propel 2 and crowd motors. Each pair of switches enables change over and power transfer from one of the paired motors to the other motor. The bi-state switches enable quicker transfer of power between motors than transfer switches employing external motor-powered mechanical transfer linkages. Bi-state transfer switches also maintain transfer coupling status in the event of power failure to the switch actuators, allowing an excavator operator to continue the drive function in operation prior to the switch power failure.
摘要翻译： 一种挖掘机驱动系统，其中一对推进电机中的一个与一对专用于人群和起重机运动的电动机中的另一个共享一对逆变器电源中的一个。 在控制器控制下触发的一对非易失性双态开关允许在起重机和推进1个电动机之间共享逆变器。 另一对开关允许在推进2和人群电机之间进行变频器共用。 每对开关使得能够从成对的电机之一转换到另一个电动机。 双态开关可以实现电机之间的电力传输，而不需要使用外部电动机械传动连接的转换开关。 双态转换开关还在开关执行器断电的情况下保持传输耦合状态，允许挖掘机操作员在开关电源故障之前继续运行驱动功能。
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公开(公告)号：US20120257424A1
公开(公告)日：2012-10-11
申请号：US13466802
申请日：2012-05-08
IPC分类号： H02M5/40
CPC分类号： H02P5/74 , E02F9/207 , E02F9/2091
摘要： The maximum electrical power drawn from an electrical power source by a mining excavator comprising electric motors is reduced by supplying supplementary electrical power from an electrical energy storage unit. The input electrical power drawn by the mining excavator is cyclic. An upper limit is set for the electrical power drawn from the electrical power source. When the input electrical power drawn by the mining excavator exceeds the upper limit, electrical power is supplied by the electrical energy storage unit, such as an ultracapacitor bank. The ultracapacitor bank may be charged by the electrical power source during off-peak intervals. Electrical power generated by electrical motors operating in a regeneration interval may also be recaptured and stored in the electrical energy storage unit.
摘要翻译： 通过从电能存储单元提供补充电力来减少由包括电动机的采矿挖掘机从电源引出的最大电功率。 采矿挖掘机的输入电力是循环的。 从电源抽取的电力设定上限。 当采矿挖掘机抽取的输入电力超过上限时，由诸如超级电容器组之类的电能存储单元供电。 在非高峰期间，超级电容器组可能由电源充电。 在再生间隔中工作的电动机产生的电力也可以被重新捕获并存储在电能存储单元中。
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