| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control method for compensating a dead time, an ON-state voltage drop and a variation of voltage of each phase in a voltage type inverter, in which a desired AC voltage is generated as an output under pulse-width modulation control. <P>SOLUTION: The voltage type inverter is composed of a power converting device 2 and a control device 30. Each three-phase compensation voltage command value for each compensation is calculated previously from each operation/control amount in the control device 30 for causing a prescribed DC current to flow from the voltage type inverter. At the time of normal operation of the voltage type inverter, each three-phase compensation command value from the control device 30 is added to each three-phase AC current voltage command value. Then, each command value is fed to the current converting device 2 so that each three-phase voltage with small distortion is generated from the voltage type inverter. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
