公开(公告)号：US20080259509A1

公开(公告)日：2008-10-23

申请号：US11737002

申请日：2007-04-18

申请人： MOHAMED A. ELDERY ,  ROBERT D. PATON

发明人： MOHAMED A. ELDERY ,  ROBERT D. PATON

IPC分类号： H02H7/06

CPC分类号： G05F1/00

摘要： A field discharge circuit may rapidly reduce the field current of a generator, thereby avoiding an overvoltage condition. The field discharge circuit of the present invention may use another storage device, such as a capacitor, to quickly transfer the field current energy thereto and then slowly dissipate the transferred energy after the event (such as removal of a load) has passed. By transferring this energy to a storage device and subsequently slowly discharging this energy through a resistor, electromagnetic interference caused by a conventional resistive discharge can be reduced.

摘要翻译： 场放电电路可以快速地减小发电机的励磁电流，从而避免过电压状态。 本发明的场放电电路可以使用诸如电容器的另一种存储装置来快速地传送场电流能量，然后在事件（例如移除负载）已经过去之后缓慢耗散所传送的能量。 通过将该能量转移到存储装置并随后通过电阻器缓慢地释放该能量，可以减少由常规电阻放电引起的电磁干扰。

公开(公告)号：US20080106829A1

公开(公告)日：2008-05-08

申请号：US11740975

申请日：2007-04-27

申请人： Katsuyuki Sumimoto ,  Junya Sasaki

发明人： Katsuyuki Sumimoto ,  Junya Sasaki

IPC分类号： H02H7/06

CPC分类号： H02P9/102 ,  H02P2101/45

摘要： A vehicle alternator control device in which, when a signal detection portion detects a determined input signal, an operating mode of an overvoltage warning portion is switched to a detection operating mode by an overvoltage warning operating mode switching portion. In the detection operating mode, the overvoltage warning portion is activated when a voltage below a determined voltage has continued for a time that is less than a determined time. Accordingly, checks related to the operation of the overvoltage warning portion can be completed in a short time at a plant or the like.

摘要翻译： 一种车辆交流发电机控制装置，其中，当信号检测部分检测到确定的输入信号时，过电压警告部分的操作模式通过过电压警告操作模式切换部分切换到检测操作模式。 在检测工作模式下，当低于确定电压的电压持续一小于确定时间的时间时，过电压警告部分被激活。 因此，能够在植物等的短时间内完成与过电压警告部的动作相关的检查。

公开(公告)号：US20080100269A1

公开(公告)日：2008-05-01

申请号：US11754060

申请日：2007-05-25

申请人： Junya Sasaki ,  Katsuyuki Sumimoto

发明人： Junya Sasaki ,  Katsuyuki Sumimoto

IPC分类号： H02H7/06 ,  H02H7/18 ,  H02K11/00

CPC分类号： H02P9/48 ,  G01R31/006 ,  G01R31/026 ,  G01R31/343 ,  H02J7/1461

摘要： A controller of a generator for a vehicle in the invention includes a battery voltage detecting circuit and an output terminal voltage detecting circuit of an AC generator. A value of a detected voltage of the output terminal voltage of the AC generator is set to be higher than a value of a detected voltage of the battery voltage. A diagnosis alarm signal is outputted when the detected voltage of the battery voltage is lower than the set value while the detected voltage of the output terminal is higher than the set value.

摘要翻译： 本发明的车辆用发电机的控制器包括电池电压检测电路和交流发电机的输出端子电压检测电路。 将AC发电机的输出端子电压的检测电压的值设定为高于电池电压的检测电压的值。 当电池电压的检测电压低于设定值时，输出端子的检测电压高于设定值时，输出诊断报警信号。

公开(公告)号：US20080074810A1

公开(公告)日：2008-03-27

申请号：US11534587

申请日：2006-09-22

申请人： Armando Guzman-Casillas ,  Hector J. Altuve-Ferrer

发明人： Armando Guzman-Casillas ,  Hector J. Altuve-Ferrer

IPC分类号： H02H7/06

CPC分类号： H02H7/065 ,  H02P9/006

摘要： An apparatus and method provide protection for a synchronous generator in a power system. The method includes deriving a plurality of generator safe operating boundary data expressions from power system data and/or user-defined inputs. The power system data may include a plurality of generator data supplied by a manufacturer of the generator and/or power system parameters such as power system equivalent impedance. Each generator safe operating boundary data expression may relate to a generator capability curve, a steady-state stability limit curve, a minimum excitation limiter curve, an over excitation limiter curve, or an user-defined curve. The method also includes calculating an active power value sum and a reactive power value sum based on generator three-phase currents and voltages, comparing these sums to at least one of the plurality of generator safe operating boundary data expressions, and to provide protection and/or alarming functions for the generator based on this comparison.

摘要翻译： 一种装置和方法为电力系统中的同步发电机提供保护。 该方法包括从电力系统数据和/或用户定义的输入中导出多个发电机安全操作边界数据表达式。 电力系统数据可以包括由发电机的制造商提供的多个发电机数据和/或诸如电力系统等效阻抗的电力系统参数。 每个发电机的安全运行边界数据表达式可能与发电机能力曲线，稳态稳定极限曲线，最小励磁限制曲线，过励磁限制器曲线或用户定义曲线有关。 该方法还包括基于发电机三相电流和电压来计算有功功率值和无功功率和，将这些和与多个发电机安全操作边界数据表达式中的至少一个进行比较，并提供保护和/ 或基于该比较的发电机的报警功能。

公开(公告)号：US20080054858A1

公开(公告)日：2008-03-06

申请号：US11892663

申请日：2007-08-24

申请人： Makoto Uchimi ,  Yoshio Tanaka

发明人： Makoto Uchimi ,  Yoshio Tanaka

IPC分类号： H02H7/06

CPC分类号： F02B63/04 ,  F02B63/047

摘要： An engine-driven work machine system includes an engine; a work machine driven by the engine; a frame supporting the engine and the work machine; and a sound-insulating housing provided on the frame. The sound-insulating housing includes a bottom plate; a pair of opposing sidewall plates extending from the bottom plate with the engine and the work machine therebetween; and a fuel tank connecting upper ends of the sidewall plates. A mounting flange formed around an outer periphery of the fuel tank is superposed on a flat tank-supporting portion formed at the upper ends of the sidewall plates. A downward-facing collar is formed at an outer end of the mounting flange. An upward-facing collar is formed in the tank-supporting portion and arranged inwardly of the downward-facing collar with respect to the sound-insulating housing. A seal member is provided outwardly of the upward-facing collar and between the mounting flange and tank-supporting portion.

摘要翻译： 发动机驱动的作业机系统包括发动机; 由发动机驱动的作业机械; 支撑发动机和作业机器的框架; 以及设置在框架上的隔音壳体。 隔音壳体包括底板; 一对相对的侧壁板，其从底板与发动机和工作机器在其间延伸; 以及连接侧壁板的上端的燃料箱。 在燃料箱的外周形成的安装凸缘叠置在形成在侧壁板的上端的平坦的罐支撑部上。 在安装凸缘的外端形成向下的轴环。 一个向上的衣领形成在罐支撑部分中并相对于隔音壳体布置在向下的衣领的内部。 密封构件设置在向上朝向的轴环的外侧以及安装凸缘和油箱支撑部分之间。

公开(公告)号：US20080043383A1

公开(公告)日：2008-02-21

申请号：US11505739

申请日：2006-08-17

申请人： Mahesh J. Shah ,  Chai-Nam Ng ,  George Seffernick

发明人： Mahesh J. Shah ,  Chai-Nam Ng ,  George Seffernick

IPC分类号： H02H7/06

CPC分类号： H02H7/06 ,  H02P9/102 ,  H02P9/107 ,  H02P29/60

摘要： A fault protection system provides fault protection to a permanent magnet (PM) generator. The fault protection system includes one or more overload and short-circuit protection circuits, an unbalanced protection circuit and a thermal protection circuit. The overload and short-circuit protection circuit detects both overload and short-circuit conditions by monitoring current and voltage generated at a single phase by the PM generator. The unbalanced protection circuit monitors and compares current and voltage generated associated with at least two individual phases to determine unbalanced conditions between the phases. The thermal protection circuit detects a thermal overload condition by monitoring the temperature of the PM generator. If the overload and short circuit protection circuit, the unbalanced protection circuit, or the thermal protection circuit detects a fault signal, a control circuit causes a control device to reduce or prevent mechanical power from being supplied to the PM generator, preventing the PM generator from generating power and protecting it from damage.

摘要翻译： 故障保护系统为永磁（PM）发生器提供故障保护。 故障保护系统包括一个或多个过载和短路保护电路，不平衡保护电路和热保护电路。 过载和短路保护电路通过监测PM发电机在单相中产生的电流和电压来检测过载和短路情况。 不平衡保护电路监测和比较与至少两个单独相位相关的电流和电压，以确定相之间的不平衡条件。 热保护电路通过监测PM发生器的温度来检测热过载状态。 如果过载和短路保护电路，不平衡保护电路或热保护电路检测到故障信号，控制电路使控制装置减少或防止机械电源供给PM发电机，防止PM发电机 发电，防止损坏。

公开(公告)号：US20080042683A1

公开(公告)日：2008-02-21

申请号：US11831366

申请日：2007-07-31

申请人： Bogdan Kasztenny ,  Dale Finney ,  Michael McClure

发明人： Bogdan Kasztenny ,  Dale Finney ,  Michael McClure

IPC分类号： G01R31/34 ,  H02H7/06

CPC分类号： H02H7/06 ,  H02H1/0092

摘要： A method for detecting stator ground faults in a generator is described. The method includes receiving a neutral voltage signal from a neutral point of a stator, receiving a plurality of terminal voltage and current signals from the stator, deriving a magnitude of a harmonic component from the neutral voltage signal, deriving a total complex power from the terminal voltage and current signals, calculating an expected value of a harmonic based on the complex power at a first time and a plurality of values of the complex power, where the values of the complex power are measured at times before the first time, and comparing the expected value and a measured value of the harmonic.

摘要翻译： 描述了一种用于检测发电机中定子接地故障的方法。 该方法包括从定子的中性点接收中性电压信号，从定子接收多个端子电压和电流信号，从中性电压信号导出谐波分量的幅度，从终端导出总复合功率 电压和电流信号，基于第一时间的复数功率计算谐波的期望值，以及复数功率的多个值，其中复数功率的值在第一时间之前被测量，并将 预期值和谐波的测量值。

公开(公告)号：US07330015B2

公开(公告)日：2008-02-12

申请号：US11373123

申请日：2006-03-13

申请人： Yasuhiro Takase ,  Tadatoshi Asada ,  Koji Tanaka

发明人： Yasuhiro Takase ,  Tadatoshi Asada ,  Koji Tanaka

IPC分类号： H02H7/06 ,  H02P9/00 ,  H02P11/00

CPC分类号： H02P9/006 ,  H02J7/166 ,  H02P9/305

摘要： The power generation controller, which is for regulating an output voltage of a vehicle generator or a battery voltage of a vehicle battery charged by the vehicle generator by controlling an excitation current flowing into an excitation winding of the vehicle generator, includes a switching element connected in series between an output terminal of the vehicle generator and the excitation winding, a voltage control circuit on/off controlling the switching element such that one of the output voltage of the vehicle generator and the battery voltage is kept at a target voltage, and a contact abnormality detector circuit detecting a voltage of the output terminal as the output voltage of the vehicle generator, and detecting abnormality in a contact state between the power generation controller and the output terminal on the basis of the detected output voltage of the vehicle generator.

摘要翻译： 用于通过控制流入车辆发电机的励磁绕组的励磁电流来调节车辆发电机的输出电压或由车辆发电机充电的车辆电池的电池电压的发电控制器包括： 串联在车辆发电机的输出端子和励磁绕组之间，电压控制电路对开关元件进行开/关控制，使得车辆发电机的输出电压和电池电压之一保持在目标电压，并且接点 检测作为车辆发电机的输出电压的输出端子的电压的异常检测电路，根据检测到的车辆发电机的输出电压，检测发电控制器与输出端子的接触状态的异常。

公开(公告)号：US20080007121A1

公开(公告)日：2008-01-10

申请号：US11729399

申请日：2007-03-27

申请人： William Erdman ,  Kevin Cousineau ,  Amir Mikhail

发明人： William Erdman ,  Kevin Cousineau ,  Amir Mikhail

IPC分类号： H02J3/18 ,  F03D9/00 ,  G05D17/02 ,  H02J3/30 ,  H02H7/06

CPC分类号： F03D7/0284 ,  F03D7/0224 ,  F03D7/0272 ,  F03D7/048 ,  F03D9/25 ,  F03D9/255 ,  F03D9/257 ,  F05B2210/16 ,  F05B2270/1032 ,  F05B2270/337 ,  H02J3/382 ,  H02J3/386 ,  H02J3/387 ,  H02J2003/001 ,  H02P9/02 ,  H02P9/04 ,  H02P9/10 ,  H02P9/102 ,  H02P9/105 ,  H02P9/107 ,  H02P2101/10 ,  H02P2101/15 ,  Y02E10/723 ,  Y02E10/725 ,  Y02E10/763 ,  Y02E20/16 ,  Y10T307/522 ,  Y10T307/62 ,  Y10T307/625 ,  Y10T307/631 ,  Y10T307/636 ,  Y10T307/718

摘要： A wind powered turbine with low voltage ride-through capability. An inverter is connected to the output of a turbine generator. The generator output is conditioned by the inverter resulting in an output voltage and current at a frequency and phase angle appropriate for transmission to a three-phase utility grid. A frequency and phase angle sensor is connected to the utility grid operative during a fault on the grid. A control system is connected to the sensor and to the inverter. The control system output is a current command signal enabling the inverter to put out a current waveform, which is of the same phase and frequency as detected by the sensor. The control system synthesizes current waveform templates for all three-phases based on a sensed voltage on one phase and transmits currents to all three-phases of the electrical system based on the synthesized current waveforms.

摘要翻译： 具有低电压穿越能力的风力涡轮机。 逆变器连接到涡轮发电机的输出端。 发电机输出由逆变器调节，导致输出电压和电流在适于传输到三相公用电网的频率和相位角。 在电网故障期间，频率和相位角传感器连接到公用电网运行。 控制系统连接到传感器和逆变器。 控制系统输出是电流指令信号，使得逆变器能够输出与传感器检测到的相位和频率相同的电流波形。 控制系统根据一相感应电压对所有三相电流波形模板进行合成，并根据合成电流波形将电流传输到电气系统的所有三相。

公开(公告)号：US20070279012A1

公开(公告)日：2007-12-06

申请号：US11381900

申请日：2006-05-05

申请人： Christof Sihler

发明人： Christof Sihler

IPC分类号： H02H7/06 ,  H02P9/00 ,  H02P11/00

CPC分类号： H02P23/04

摘要： A resistive torsional mode damping system for a shaft of a machine includes: a sensor configured for sensing a signal representative of torque on the shaft; a controller configured for using the sensed signal for detecting a presence of a torsional vibration on the shaft corresponding to a natural frequency of the shaft and for generating control signals for damping the torsional vibration; and a damper including a damping converter and resistor coupled to a DC output of the damping converter, the damping converter being coupled to the machine through a power bus and having a power rating on the order of less than or equal to about five percent of a nominal power of the machine.

摘要翻译： 一种用于机器轴的电阻扭转模式阻尼系统包括：传感器，被配置为感测代表轴上扭矩的信号; 控制器，被配置为使用所述感测信号来检测对应于所述轴的固有频率的所述轴上的扭转振动的存在，并且用于产生用于阻尼扭转振动的控制信号; 以及阻尼器，其包括耦合到所述阻尼转换器的DC输出的阻尼转换器和电阻器，所述阻尼转换器通过电力总线耦合到所述机器，并且具有小于或等于大约百分之五的功率额定值 机器的额定功率。