| 摘要 |
<p>PURPOSE:To obtain a parallel operation controller for power converter in which interphase reactor can be reduced and parallel operation control of power converters can be carried out stably. CONSTITUTION:The parallel operation controller for power converter comprises a voltage fixed interval determining circuit 17 for determining one phase among three phases for which the voltage level is fixed at a predetermined DC voltage level for a predetermined time interval based on voltage command values for respective phases of a plurality of power converters, i.e., three-arm modulation control signals, thus determining voltage fixed periods for the plurality of power converters, and two-arm modulation control signal generating circuits 9B, 11A for generating a fixed voltage command value for the phase determined by the circuit 17 and delivering three-arm modulation control signals for two remaining phases to a PWM modulating means while correcting into two-arm modulation control signals.</p> |
