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    • 41. 发明授权
    • Power conversion apparatus
    • 电力转换装置
    • US5742493A
    • 1998-04-21
    • US705655
    • 1996-08-30
    • Satoru ItoSatoru InaridaKiyoshi Nakamura
    • Satoru ItoSatoru InaridaKiyoshi Nakamura
    • H02M7/219B60L3/00B60L9/28H02M5/458H02M7/12H02M7/48H02M7/483H02P27/06H02P27/08H02M5/45
    • H02M7/487B60L3/0023B60L9/28H02M1/4233H02M5/4585B60L2200/26B60L2220/12
    • A power conversion apparatus has a PWM power converter coupled to an A.C. power supply on one side and to a D.C. load on the other side, a voltage controller for adjusting the D.C. output voltage from the converter, a power factor controller for adjusting the power factor on the A.C. side of the converter, a command generator for generating a PWM modulation factor and a phase signal in response to the voltage and an output from the power factor controller, and a PWM modulation unit for controlling the converter in response to these command signals. The power factor controller is controlled to reduce its power factor when a control parameter relating to the modulation factor of the converter approaches its limit value, and the power of the D.C. load is limited when a control parameter relating to the input power of the converter approaches its limit value, such that the power factor of the power converter is allowed to be reduced and the power of the D.C. load is limited respectively in each designated region, thereby preventing any overcurrent even if the power supply voltage fluctuates. As a result, continuous operation is maintained, making it possible to reduce the capacity of the converter required for generating the same output power over the conventional converter.
    • 功率转换装置具有一个PWM功率转换器,其耦合到一侧的AC电源和另一侧的DC负载,用于调整来自转换器的DC输出电压的电压控制器,用于调节功率因数的功率因数控制器 在转换器的AC侧,用于响应于电压和来自功率因数控制器的输出而产生PWM调制因子和相位信号的命令发生器,以及用于响应于这些命令信号控制转换器的PWM调制单元 。 当与转换器的调制因子相关的控制参数接近其限制值时,功率因数控制器被控制以降低其功率因数,并且当与转换器的输入功率相关的控制参数接近时,直流负载的功率受到限制 其限制值,使得功率转换器的功率因数被允许减小,并且在每个指定区域中分别限制DC负载的功率,从而即使电源电压波动也可以防止任何过电流。 结果,维持连续运行,使得有可能降低与常规转换器相同的输出功率所需的转换器的容量。
    • 42. 发明授权
    • Control apparatus for electric vehicles
    • 电动车控制装置
    • US5677610A
    • 1997-10-14
    • US519397
    • 1995-08-25
    • Tokunosuke TanamachiKiyoshi NakamuraMasanori Kobayashi
    • Tokunosuke TanamachiKiyoshi NakamuraMasanori Kobayashi
    • B60L3/10B60L9/18H02P27/06H02P5/34
    • B60L3/10B60L2200/26B60L2220/12
    • A control apparatus for controlling an electric vehicle, electric car, rolling stock and electric locomotives, which ensures that an inverter output frequency command for its inverter will not depend on the rotor frequency of the induction motor, but controls the inverter output current using a constant current control system, thus preventing an overcurrent, and is capable of accelerating or decelerating the vehicle at a torque precisely corresponding to a current command. The inverter output frequency command is incremented or decremented in accordance with a frequency-to-time rate-of-change command which has been updated by the current control system. Since the inverter output frequency command is adapted basically not to depend on the rotor frequency of the induction motor, and since the output current of the inverter is controlled by the constant current control system, there are such advantages according to the invention that an overcurrent is not likely to occur, and the vehicle can be accelerated or decelerated at a torque precisely corresponding to the current command.
    • 一种用于控制电动车辆,电动汽车,机车车辆和电力机车的控制装置,其确保逆变器的逆变器输出频率指令不依赖于感应电动机的转子频率,而是使用常数控制逆变器输出电流 电流控制系统,从而防止过电流,并且能够以与电流指令精确对应的转矩加速或减速车辆。 逆变器输出频率指令根据由当前控制系统更新的频率 - 时间变化率指令递增或递减。 由于逆变器输出频率指令基本上不依赖于感应电动机的转子频率,并且由于逆变器的输出电流由恒流控制系统控制,所以根据本发明,过电流是 不可能发生,并且车辆可以以与当前指令精确对应的扭矩加速或减速。
    • 44. 发明授权
    • Electric power converter arrangement and electric rolling stock control
device using the same
    • 电力转换装置及电动车辆控制装置采用该装置
    • US5375050A
    • 1994-12-20
    • US978371
    • 1992-11-18
    • Kiyoshi NakataTokunosuke TanamachiKiyoshi NakamuraMutsuhiro TerunumaMasato SuzukiYoshio TsutsuiEiichi Toyota
    • Kiyoshi NakataTokunosuke TanamachiKiyoshi NakamuraMutsuhiro TerunumaMasato SuzukiYoshio TsutsuiEiichi Toyota
    • B60L9/18B60L9/22H02M7/48H02P27/08H02M7/505
    • H02M7/487B60L9/22B60L2200/26
    • An electrical power converter having a phase converter constituted by positive side semiconductor switching elements connected in series and negative side semiconductor switching elements connected in series which converts a DC voltage to an AC output phase voltage having at least three potential levels, resulting in three possible modulation modes: dipolar, partial dipolar and unipolar. Dipolar modulation is realized by alternating positive and negative output pulses. Unipolar modulation is realized by output pulses having only the same polarity as the corresponding fundamental modulation wave. Transition is accomplished via partial dipolar modulation which is realized by alternating positive and negative output pulses in a first period of a half cycle by outputting alternating positive and negative pulses and in a second period by outputting pulses having only the same polarity as the corresponding fundamental modulation wave. A control unit for the converter turns the semiconductor switching elements on and off depending on an input voltage amplitude command for a fundamental modulation wave. The intervals of the first and second periods in the half cycle of the AC output phase voltage varies dependent upon the voltage amplitude command.
    • 一种具有由串联连接的正侧半导体开关元件和串联连接的负侧半导体开关元件构成的相位转换器的电力转换器,其将DC电压转换为具有至少三个电位电平的AC输出相电压,导致三种可能的调制 模式:偶极,部分偶极和单极。 通过交替的正和负输出脉冲来实现双极调制。 单极调制由具有相同基极调制波的极性相同的输出脉冲实现。 通过部分双极性调制实现转换,其通过在半周期的第一周期内交替输出正交和负脉冲的交替正脉冲和负脉冲来实现,并且在第二周期中通过输出具有与相应基本调制相同极性的脉冲 波。 用于转换器的控制单元根据用于基本调制波的输入电压幅度指令使半导体开关元件导通和截止。 AC输出相电压的半周期中的第一和第二周期的间隔根据电压幅度指令而变化。
    • 49. 发明授权
    • Power supply system for a linear motor
    • 线性电机的电源系统
    • US4454457A
    • 1984-06-12
    • US388220
    • 1982-06-14
    • Kiyoshi NakamuraMasayoshi IsakaShigeyoshi Koike
    • Kiyoshi NakamuraMasayoshi IsakaShigeyoshi Koike
    • B60L13/03B60L15/00B60M3/00H02P25/06H02K41/02
    • B60L15/005B60L2200/26Y02T10/645
    • In a linear motor composed of a propelling coil laid on continuously along a track and a field system mounted on a vehicle for driving it, the propelling coil of an enormous length is sectioned into a number of propelling coil units which are connected alternately to two sets of feeders by means of switches, the feeder sets being supplied with polyphase currents from different power converters, respectively. The propelling coil units are connected in series to one another without any interposed insulation and sectioned by a number of lead conductors so that every pair of the adjacent propelling coil units has a common coil portion shared by them and having a length not smaller than that of the vehicle. A pair of the polyphase lead conductors connected to each of the propelling coil units are connected, respectively, to going feeders and return feeders constituting the set of feeders through switches. Change-over of power supply between the adjacent propelling coil units is performed during a period in which the vehicle is running along the common coil section by closing and opening the associated switches and controlling power converters.
    • 在由沿着轨道连续铺设的推进线圈和安装在车辆上用于驱动它的现场系统组成的线性电动机中,将大量长度的推进线圈分成许多推进线圈单元,其交替地连接到两组 的馈线通过开关分别供给来自不同功率转换器的多相电流。 推进线圈单元彼此串联连接,没有任何插入的绝缘并由多个引线导体分段,使得每对相邻的推进线圈单元具有共同的共用线圈部分,并且具有不小于 机动车。 连接到每个推进线圈单元的一对多相引线导体分别通过开关连接到构成该馈线组的进给器和返回馈线。 在相邻的推进线圈单元之间的电源的切换在通过关闭和打开相关联的开关并控制功率转换器的同时沿着公共线圈部分行驶的时段期间执行。