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    • 1. 发明授权
    • Inverter control apparatus
    • 变频器控制装置
    • US5532569A
    • 1996-07-02
    • US131308
    • 1993-10-04
    • Tokunosuke TanamachiKiyoshi NakamuraKiyoshi NakataYoshio TsutsuiWataru MiyakeKatsuaki Suzuki
    • Tokunosuke TanamachiKiyoshi NakamuraKiyoshi NakataYoshio TsutsuiWataru MiyakeKatsuaki Suzuki
    • H02M7/5387H02P5/34
    • H02M7/53873H02M2001/0022H02M2007/4803
    • An electric railway vehicle control system including a converter for converting a single-phase a.c. voltage to a d.c. voltage, a PWM inverter for inverting the d.c. output of the converter to a variable voltage, variable frequency a.c. voltage, and a three-phase induction motor supplied with the a.c. output voltage of the inverter to drive electric railway vehicles. The control system further includes a unit for controlling the output voltage of the inverter in a variable voltage, variable frequency mode for changing the output voltage substantially relative to a change in the output frequency thereof and in a constant voltage, variable frequency control mode for fixing the output voltage to a substantially constant value, and a unit for detecting a rectification ripple in a frequency band including a frequency double the frequency of the single-phase a.c. voltage included in the d.c. input voltage to the inverter.
    • 一种电动车辆控制系统,包括用于转换单相交流电的转换器。 电压到直流 电压,用于反相直流的PWM逆变器。 转换器输出为可变电压,可变频率a.c. 电压和三相异步电动机。 变频器的输出电压驱动电动铁路车辆。 控制系统还包括用于以可变电压,可变频率模式控制逆变器的输出电压的单元,用于基本上相对于其输出频率的变化来改变输出电压,并且以恒定电压,用于固定的可变频率控制模式 输出电压为基本恒定的值,以及用于检测包括单相交流频率的两倍频率的频带中的整流纹波的单元 电压包括在直流电压 输入电压到变频器。
    • 4. 发明授权
    • Multilevel inverter having voltage dividing capacitors distributed
across multiple arms
    • 具有分布在多个臂上的分压电容器的多电平逆变器
    • US5481448A
    • 1996-01-02
    • US329374
    • 1994-10-25
    • Kiyoshi NakataKiyoshi NakamuraTokunosuke TanamachiYoshio TsutsuiMutsuhiro Terunuma
    • Kiyoshi NakataKiyoshi NakamuraTokunosuke TanamachiYoshio TsutsuiMutsuhiro Terunuma
    • H02M7/48H02M7/483H02M7/487H02M7/5387H02M7/521
    • H02M7/487
    • The power converter of the invention relates to a small-sized highly efficient power converter for generating an a.c. voltage output of multiple levels with less harmonic content. In the power converter, a d.c. voltage source is separated into plural sections by series connected voltage dividing capacitors and multiple levels of a.c. output voltage are obtained from the divided d.c. voltage by on-off control of switching devices. The power converter has plural sets of the voltage dividing capacitors disposed separately adjacent to each switching devices, and series connection point of each set of the voltage dividing capacitors are connected to division points of the corresponding switching devices of each phase. The voltage dividing capacitors are connected with each other at their series connection points. Thereby, the arrangement makes wiring length short and equal between the switching devices and the voltage dividing capacitors for each phase and reduce a loss in the snubber circuit, resulting in an a.c. voltage output with less harmonic content.
    • 本发明的功率转换器涉及一种小型高效率功率转换器,用于产生一个直流 具有较少谐波含量的多级电压输出。 在电源转换器中, 电压源通过串联连接的分压电容器和多个等级的交流电源分成多个部分。 输出电压从分压直流 开关器件的开 - 关控制电压。 电力转换器具有与各开关元件分开设置的多组分压电容器,各组分压电容器的串联连接点与各相的开关元件的分断点连接。 分压电容器在其串联连接点处彼此连接。 因此,该布置使得各相的开关器件和分压电容器之间的布线长度短并且相等,并且减小了缓冲电路的损耗,导致了直流。 电压输出谐波含量较少。
    • 6. 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。