公开(公告)号：US20100231159A1

公开(公告)日：2010-09-16

申请号：US12376464

申请日：2006-10-19

申请人： Hideo Obi ,  Takahiro Kikuchi ,  Takeshi Tanaka ,  Daisuke Ito ,  Keita Hatanaka

发明人： Hideo Obi ,  Takahiro Kikuchi ,  Takeshi Tanaka ,  Daisuke Ito ,  Keita Hatanaka

IPC分类号： H02P27/04

CPC分类号： H02P27/06

摘要： A power conversion device includes a converter that converts AC power to DC power, a converter controller that controls an output voltage of the converter, an inverter that converts the DC power to AC power at a variable frequency, an inverter controller that controls an output frequency of the inverter, and a current detector that detects an AC current on an input side of the converter. It is configured in such a manner that the inverter controller adjusts a slip frequency of the induction motor in response to a fluctuation of the AC current on the input side of the converter detected by the current detector. It thus becomes possible to suppress a beat current in an output current of the inverter at the occurrence of a load fluctuation as well as a power supply voltage fluctuation.

摘要翻译： 电力转换装置包括将交流电转换为直流电的转换器，控制转换器的输出电压的转换器控制器，以可变频率将直流电转换为交流电的逆变器，控制输出频率的逆变器控制器 以及检测转换器的输入侧的交流电流的电流检测器。 以使逆变器控制器响应于由电流检测器检测的转换器的输入侧的交流电流的波动来调整感应电动机的转差频率的方式构成。 因此，在发生负载变动以及电源电压变动的情况下，可以抑制逆变器的输出电流中的节拍电流。

公开(公告)号：US08044632B2

公开(公告)日：2011-10-25

申请号：US12376464

申请日：2006-10-19

申请人： Hideo Obi ,  Takahiro Kikuchi ,  Takeshi Tanaka ,  Daisuke Ito ,  Keita Hatanaka

发明人： Hideo Obi ,  Takahiro Kikuchi ,  Takeshi Tanaka ,  Daisuke Ito ,  Keita Hatanaka

IPC分类号： H02P27/04

CPC分类号： H02P27/06

摘要： A power conversion device includes a converter that converts AC power to DC power, a converter controller that controls an output voltage of the converter, an inverter that converts the DC power to AC power at a variable frequency, an inverter controller that controls an output frequency of the inverter, and a current detector that detects an AC current on an input side of the converter. It is configured in such a manner that the inverter controller adjusts a slip frequency of the induction motor in response to a fluctuation of the AC current on the input side of the converter detected by the current detector. It thus becomes possible to suppress a beat current in an output current of the inverter at the occurrence of a load fluctuation as well as a power supply voltage fluctuation.

摘要翻译： 电力转换装置包括将交流电转换为直流电的转换器，控制转换器的输出电压的转换器控制器，以可变频率将直流电转换为交流电的逆变器，控制输出频率的逆变器控制器 以及检测转换器的输入侧的交流电流的电流检测器。 以使逆变器控制器响应于由电流检测器检测的转换器的输入侧的交流电流的波动来调整感应电动机的转差频率的方式构成。 因此，在发生负载变动以及电源电压变动的情况下，可以抑制逆变器的输出电流中的节拍电流。

公开(公告)号：US4686434A

公开(公告)日：1987-08-11

申请号：US837240

申请日：1986-03-07

申请人： Shigeru Kojima ,  Hideo Obi

发明人： Shigeru Kojima ,  Hideo Obi

IPC分类号： B60L9/16 ,  B61C15/08

CPC分类号： B60L9/16 ,  B60L2200/26 ,  B60L2220/12

摘要： An electric vehicle monitoring system in which one induction motor has a rotational speed detector but another motor does not have such a detector. Separate current detectors monitor the current delivered to each of the motors. A calculations circuit uses the rotation of the one motor and a comparison of the two currents to monitor the performance of both motors.

摘要翻译： 一种电动车辆监视系统，其中一个感应电动机具有转速检测器，但另一个电动机不具有这样的检测器。 独立的电流检测器监测传递给每个电机的电流。 计算电路使用一个电机的旋转和两个电流的比较来监测两个电机的性能。

公开(公告)号：US4894745A

公开(公告)日：1990-01-16

申请号：US852486

申请日：1986-04-16

申请人： Eiji Akagawa ,  Hideo Obi ,  Yumiko Asano

发明人： Eiji Akagawa ,  Hideo Obi ,  Yumiko Asano

IPC分类号： B60L3/04 ,  B60L3/00 ,  H02H11/00

CPC分类号： H02H11/005 ,  B60L3/0069 ,  B60L3/0084 ,  B60L3/04 ,  B60L9/22 ,  B60L2200/26

摘要： A protection circuit for preventing an over-current condition if the semiconductor power controller in an electric train power control circuit is defective. The power controller is connected in series through first and second switches to a D.C. power source. A capacitor is also connected to the power source through the two switches and through a charging resistor connected in parallel with the second switch. When the first switch is closed, the capacitor is charged through the first switch and the resistor. After the capacitor voltage reaches a set reference voltage during a predetermined time interval, the second switch is closed to permit the power control equipment subsequently to apply power to the driving motor of the train. If the capacitor voltage does not reach the reference voltage during the predetermined time interval, then the second switch remains open and the first switch is re-opened to completely disconnect the power control equipment from the D.C. power source.

摘要翻译： 如果电力系统功率控制电路中的半导体功率控制器有缺陷，则用于防止过电流状态的保护电路。 功率控制器通过第一和第二开关串联连接到直流电源。 电容器还通过两个开关和通过与第二开关并联连接的充电电阻器连接到电源。 当第一开关闭合时，电容器通过第一开关和电阻器充电。 在预定时间间隔期间电容器电压达到设定的参考电压之后，第二开关闭合，以允许电力控制设备随后向列车的驱动电机施加电力。 如果电容器电压在预定的时间间隔内未达到参考电压，则第二开关保持断开，并且第一开关被重新打开，从而将电力控制设备与直流电源完全断开。

公开(公告)号：US4607321A

公开(公告)日：1986-08-19

申请号：US787716

申请日：1985-10-17

申请人： Hideo Obi

发明人： Hideo Obi

IPC分类号： B60L9/18 ,  H02M7/48 ,  H02M7/527 ,  H02P27/04 ,  H02M1/12

CPC分类号： H02M7/527 ,  H02M7/48 ,  H02P27/08

摘要： An inverter for use with a vehicular induction motor employs a modulation system in which the waveform of the carrier wave is adjusted so that the modulation wave is made into a constant DC signal.

摘要翻译： 用于车载感应电动机的逆变器采用其中调整载波波形的调制方式，使调制波变成恒定的直流信号。

公开(公告)号：US5113126A

公开(公告)日：1992-05-12

申请号：US566319

申请日：1990-08-13

申请人： Tatsusuke Nanzan ,  Hideo Obi ,  Masahiko Nakamoto ,  Noriaki Nakamoto ,  Mikio Ohta

发明人： Tatsusuke Nanzan ,  Hideo Obi ,  Masahiko Nakamoto ,  Noriaki Nakamoto ,  Mikio Ohta

IPC分类号： B60L3/00 ,  B60L9/00 ,  B60L9/22 ,  H02M1/12

CPC分类号： B60L9/005 ,  B60L9/22 ,  H02M1/12 ,  B60L2200/26

摘要： A control device for an electric vehicle having a reverse L type first filter circuit composed of a first filter reactor and a first filter capacitor between a current collector and control means for controlling electric motor of the electric vehicle. A second filter circuit composed of a series connected second filter reactor and a second filter capacitor is connected in parallel to the first filter capacitor. The second filter circuit has circuit constants selected such that a composite impedance of the second filter circuit and the first filter capacitor when viewed from the control means becomes small at a specific frequency.

公开(公告)号：US5061883A

公开(公告)日：1991-10-29

申请号：US379213

申请日：1989-07-13

申请人： Yumiko Asano ,  Hideo Obi ,  Shigeya Ohhama

发明人： Yumiko Asano ,  Hideo Obi ,  Shigeya Ohhama

IPC分类号： B60L7/14 ,  B60L7/24

CPC分类号： B60L7/24 ,  B60L2200/26

摘要： A braking system for an electric railcar having an a.c. motor with a variable voltage variable frequency inverter. The inverter controls the voltage and frequency supplied to the a.c. motor in response to the railcar speed, commands from the cab, load conditions, etc. The braking system also includes a pneumatic brake which operates at low speeds. A control circuit operates the inverter to supply electric braking down to a slow speed and then simultaneously applies electric braking and pneumatic braking, smoothly increasing the pneumatic braking force until the railcar stops. During the transistion from electric braking to pneumatic braking the control circuit maintains an output frequency from the inverter to the a.c. motor in the vicinity of 0 Hz, keeping the voltages in the positive phase range.

摘要翻译： 一种具有直流电动机的电车的制动系统。 电机带有可变电压变频器。 变频器控制提供给交流电源的电压和频率。 电机响应于轨道车速度，来自驾驶室的命令，负载条件等。制动系统还包括以低速操作的气动制动器。 控制电路操作逆变器，将电动制动降低到低速，然后同时施加电动制动和气动制动，平稳地增加气动制动力，直到轨道车辆停止。 在从电制动到气动制动的过程中，控制电路保持从逆变器到直流的输出频率。 电机在0 Hz附近，将电压保持在正相位范围内。