| 摘要 |
This invention provides a power converter and a power conversion method that can reduce distortions of an output voltage and an output current, can simply a calculation processing, and is inexpensive and has a high performance even when a PWM pulse gets narrow. In a power converter for connecting each phase of an AC power supply to each phase on an output side through a bidirectional switch and converting an AC source voltage by PWM, the power converter includes a one-phase fixing switching mode and a full phase switching mode, and a mode switching section for switching from the full phase switching mode to the one-phase fixing switching mode. Moreover, the power converter includes a vector component calculator (13) for selecting a voltage vector equal to an instantaneous voltage vector from a hexagonal space vector diagram and calculating a vector component of the instantaneous voltage vector, and a time calculator (14) for calculating an output time of the vector component.
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