| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a parallelization system of a power converter that suppresses a cross current between inverters, and improves operation continuity by arranging the inverters control circuits that are independent from one another in terms of control. <P>SOLUTION: In the system that parallel-connects the unit voltage-type inverters 1, and feeds AC power to a motor 3 as the parallelization system of the power converter, a reactor 2 having the large reactance of a value expressed by a per-unit system with a capacity of the unit voltage-type inverter 1 as a reference is arranged at the output side of each unit voltage-type inverter 1, by comparing this reactance with the armature-leakage reactance of the motor 3 of a value expressed by a per-unit system with a motor capacity of the motor 3 as a reference. Consequently, the cross current flowing between the unit voltage-type inverters 1 is suppressed, and the control circuits independent from the other unit voltage-type inverters 1 in terms of control are added to the parallelization system. <P>COPYRIGHT: (C)2007,JPO&INPIT |
