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    • 5. 发明授权
    • Controller for AC electric train
    • 交流电动车控制器
    • US08803356B2
    • 2014-08-12
    • US12667709
    • 2007-08-22
    • Ryo Yokozutsumi
    • Ryo Yokozutsumi
    • B60L1/00B60L9/28B60L3/00B60L9/00
    • B60L9/28B60L3/00B60L9/005B60L2200/26
    • In a controller for an AC electric train capable of power running and regenerative running, and capable of detecting a power failure in an AC overhead wire for supplying AC electric power, a power failure in the AC overhead wire is swiftly and reliably detected. A power failure detector provided in an electric-train control unit includes a specific-frequency-signal calculating unit that extracts a current component corresponding to a specific-frequency set value from a main-transformer output-current detection signal and outputs an extracted signal as a specific-frequency current signal, a subtracter that subtracts the main-transformer output-current detection signal from the specific-frequency current signal and outputs a result of the subtraction as a current deviation, and a power-failure detecting unit that compares the current deviation with a predetermined power-failure-detection set value, and outputs a power-failure detection signal when the current deviation is greater than the power-failure-detection set value.
    • 在能够进行动力运行和再生运行的交流电力系统的控制器中,能够检测用于提供交流电力的交流架空线路中的电力故障,能够迅速且可靠地检测交流架空线路中的电力故障。 设置在电力系统控制单元中的电力故障检测器包括特定频率信号计算单元,其从主变压器输出电流检测信号中提取与特定频率设定值相对应的电流分量,并将提取的信号作为 特定频率电流信号,从特定频率电流信号中减去主变压器输出电流检测信号并输出​​减法结果作为电流偏差的减法器;以及电流失效检测单元,其将电流 并且当电流偏差大于电源故障检测设定值时,输出电源故障检测信号。
    • 6. 发明授权
    • Power conversion control device, power conversion control method, electric motor, and vehicle driving system
    • 电力转换控制装置,电力转换控制方法,电动马达和车辆驱动系统
    • US09385630B2
    • 2016-07-05
    • US14347658
    • 2011-09-30
    • Ryo YokozutsumiYuruki OkadaHisanori YamasakiSho Kato
    • Ryo YokozutsumiYuruki OkadaHisanori YamasakiSho Kato
    • G05B11/28H02M7/5387H02P27/08
    • H02M7/5387H02P27/08H02P27/085
    • A power conversion control device includes a modulation-wave generating unit generating a modulation wave based on output voltage phase angle command and modulation factor, a carrier-wave generating unit that, in a case of non-overmodulation state, generates a triangular wave or saw-tooth wave as the carrier wave, and, in a case of overmodulation state, generates, as the carrier wave, a signal fixed to −1 in a first section that is a predetermined range centering on timing corresponding to a peak position of the modulation wave, generates, as the carrier wave, a signal fixed to +1 in a second section obtained by shifting the first section by a half cycle of the modulation wave, and generates, as the carrier wave, a triangular wave or saw-tooth wave in remaining third section, and a comparing unit that compares the carrier wave and the modulation wave and generates a switching signal.
    • 电力转换控制装置包括调制波生成单元,其基于输出电压相位角指令和调制度生成调制波;载波生成单元,在非过调制状态的情况下,生成三角波或锯 作为载波的情况下,在过调制状态的情况下,以对应于调制的峰值位置的定时为中心的预定范围的第一部分中,生成固定为-1的信号作为载波 产生作为载波的信号,在通过将第一部分移位调制波的半个周期而获得的第二部分中固定为+1的信号,并且生成作为载波的三角波或锯齿波 在剩余的第三部分中,以及比较单元,其比较载波和调制波,并产生开关信号。
    • 8. 发明申请
    • CONTROLLER FOR AC ELECTRIC TRAIN
    • 交流电动机控制器
    • US20100176655A1
    • 2010-07-15
    • US12667709
    • 2007-08-22
    • Ryo Yokozutsumi
    • Ryo Yokozutsumi
    • B60L1/00
    • B60L9/28B60L3/00B60L9/005B60L2200/26
    • In a controller for an AC electric train capable of power running and regenerative running, and capable of detecting a power failure in an AC overhead wire for supplying AC electric power, a power failure in the AC overhead wire is swiftly and reliably detected. A power failure detector provided in an electric-train control unit includes a specific-frequency-signal calculating unit that extracts a current component corresponding to a specific-frequency set value from a main-transformer output-current detection signal and outputs an extracted signal as a specific-frequency current signal, a subtracter that subtracts the main-transformer output-current detection signal from the specific-frequency current signal and outputs a result of the subtraction as a current deviation, and a power-failure detecting unit that compares the current deviation with a predetermined power-failure-detection set value, and outputs a power-failure detection signal when the current deviation is greater than the power-failure-detection set value.
    • 在能够进行动力运行和再生运行的交流电力系统的控制器中,能够检测用于提供交流电力的交流架空线路的电力故障,能够迅速且可靠地检测交流架空线路中的电力故障。 设置在电力系统控制单元中的电力故障检测器包括特定频率信号计算单元,其从主变压器输出电流检测信号中提取与特定频率设定值相对应的电流分量,并将提取的信号作为 特定频率电流信号,从特定频率电流信号中减去主变压器输出电流检测信号并输出​​减法结果作为电流偏差的减法器;以及电流失效检测单元,其将电流 并且当电流偏差大于电源故障检测设定值时,输出电源故障检测信号。