会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 93. 发明授权
    • Method for regulating the excitation current in a motor vehicle
alternator by digital processing, and a regulating device for carrying
out the method
    • 用于通过数字处理调节机动车辆交流发电机中的励磁电流的方法,以及用于执行该方法的调节装置
    • US06081103A
    • 2000-06-27
    • US837969
    • 1997-04-15
    • Jean-Marie Pierret
    • Jean-Marie Pierret
    • H02J7/24H02P9/30
    • H02P9/30H02J7/245Y02T10/92
    • The excitation current in the rotor winding of a motor vehicle alternator is regulated by this method. The alternator produces a rectified output voltage to be regulated, this output voltage being a periodic voltage having a period T consisting of a first phase T.sub.1 in which the battery voltage is applied to the rotor winding, and a second phase T.sub.2 in which the battery voltage is not applied to the rotor winding. The method includes: measuring the rectified voltage by sampling during each period T; comparing the measured value with a calculated reference value; and deducing from this comparison three numerical values. The first of these corresponds to the difference between the measured value of the rectified voltage and the reference value. The second of these numerical values is a closed loop excitation value calculated in each period T by adding the corresponding value measured in the preceding period to the first numerical value, to which a first correcting factor is applied. The third numerical value is an open loop excitation value calculated, in each period T, by adding together the closed loop excitation value already calculated in the same period and the first numerical value, to which a second correcting factor is applied. The duration of the first phase of the rectified voltage is determined by the value of the open loop excitation.
    • 机动车辆交流发电机的转子绕组中的励磁电流由该方法调节。 交流发电机产生要调节的整流输出电压,该输出电压是具有周期T的周期性电压,周期T由电池电压施加到转子绕组的第一相T1和第二相T2,其中电池电压 不适用于转子绕组。 该方法包括:在每个周期T期间通过采样测量整流电压; 将测量值与计算的参考值进行比较; 并从此比较推导出三个数值。 其中的第一个对应于整流电压的测量值与参考值之间的差值。 这些数值中的第二个是通过将在前一周期中测量的相应值加到应用了第一校正系数的第一数值的每个周期T中计算的闭环激励值。 第三数值是在每个周期T中通过将已经在同一周期中已经计算的闭环激励值和应用了第二校正因子的第一数值相加而计算的开环激励值。 整流电压的第一相的持续时间由开环励磁的值决定。
    • 99. 发明授权
    • Hydraulically driven low reactance, large air gap permanent magnet
generator and voltage regulation system for use therewith
    • 液压驱动的低电抗,大气隙永磁发电机和电压调节系统
    • US5977648A
    • 1999-11-02
    • US734645
    • 1996-10-21
    • George H. SeffernickMahesh J. ShahBarry L. Maltby
    • George H. SeffernickMahesh J. ShahBarry L. Maltby
    • H02K7/18H02K21/00H02P9/30F03B13/00F03B13/10
    • H02P9/305H02K7/1823H02P2101/30
    • An electric power generating system comprises a low reactance, large airgap permanent magnet generator driven by a hydraulic motor to generate a poly-phase AC output voltage. Because the permanent magnet generator is a low reluctance, large airgap machine, the output voltage regulation is low over the desired loading range of the system. The output voltage is controlled within acceptable limits by trimming the output speed of the hydraulic motor through the use of a servovalve. The control for the servovalve senses a parameter of output power and generates a speed control signal to compensate for deviations in the generator output. The system includes protection circuitry which monitors at least one parameter of the output power. This protection circuitry generates an output protection signal in response to a deviation in the monitored parameter which exceeds predetermined limits. In response to this signal, an on/off solenoid, which is coupled between the hydraulic motor and the external source of hydraulic power, terminates the flow of hydraulic power to the hydraulic motor. This results in a termination of the power generation by the permanent magnet generator. In one embodiment of the instant invention, the permanent magnet generator includes a second stator winding which is used to generate a second output voltage. A rectification circuit is coupled to this second output to transform the voltage produced thereon to a dc voltage to power dc loads.
    • 一种发电系统包括由液压马达驱动的低电抗大气隙永磁发电机,以产生多相交流输出电压。 由于永磁发电机是磁阻较小的气隙机,输出电压调节低于系统所需的负载范围。 通过使用伺服阀调节液压马达的输出速度,将输出电压控制在可接受的限度内。 伺服阀的控制检测输出功率的参数,并产生速度控制信号,以补偿发电机输出的偏差。 该系统包括监视输出功率的至少一个参数的保护电路。 该保护电路响应于超过预定极限的监视参数的偏差而产生输出保护信号。 响应于该信号,联接在液压马达和外部液压动力源之间的开/关螺线管终止液压马达的液压动力的流动。 这导致永磁发电机的发电终止。 在本发明的一个实施例中,永磁发电机包括用于产生第二输出电压的第二定子绕组。 整流电路耦合到该第二输出以将其上产生的电压变换为直流电压以对直流负载供电。