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    • 11. 发明公开
    • 전력 변환 장치와 전력 변환 방법
    • 电力变压装置和电力变压方法
    • KR1020070116271A
    • 2007-12-07
    • KR1020077024733
    • 2006-04-18
    • 가부시키가이샤 야스카와덴키
    • 야마나카가츠토시
    • H02M5/293
    • H02M5/293H02M5/297
    • A power transforming apparatus and a power transforming method wherein even in a case of a narrow PWM pulse, the distortions of the output voltage and output current can be reduced and wherein the calculating operation is simple, the cost is low and a high performance can be achieved. The power transforming apparatus, which uses bilateral switches to connect the phases of an AC power supply with the phases of an output side and which performs PWM control of the AC power supply voltages, has a single-phase-fixed switching mode and a all-phase switching mode and includes a mode switching part for switching from the all-phase switching mode to the single-phase-fixed switching mode. There are also included a vector component calculator (13) for selecting, from a hexagonal spatial vector diagram, a voltage vector, which is the same as an instantaneous voltage vector, to calculate the vector component of the instantaneous voltage vector; and a time calculator (14) for calculating the output time of the vector component.
    • 一种电力变换装置和电力变换方法,其中即使在窄脉冲PWM脉冲的情况下,可以降低输出电压和输出电流的失真,并且其中计算操作简单,成本低,并且高性能可以 实现。 使用双向开关将交流电源的相位与输出侧的相位进行交流电源电压的PWM控制的电力变换装置具有单相固定切换模式和全相位切换模式, 并且包括用于从全相切换模式切换到单相固定切换模式的模式切换部。 还包括用于从六边形空间矢量图中选择与瞬时电压矢量相同的电压矢量来计算瞬时电压矢量的矢量分量的矢量分量计算器(13) 以及用于计算矢量分量的输出时间的时间计算器(14)。