Three-phase inverter instantaneous value analysis device, three-phase inverter instantaneous value analysis method and program

摘要

PROBLEM TO BE SOLVED: To suppress a calculation error even when calculation time intervals are set to be large.;SOLUTION: A three-phase inverter instantaneous value analysis device uses an analytic model, an AC terminal-side part of which comprises a first current source on wiring between first and second AC terminals and a second current source on wiring between second and third AC terminals, and a DC terminal-side part of which comprises a third current source on wiring between first and second DC terminals. An AC current command value calculation part calculates first and second command values based upon the total value of an AC voltage phase generated as a DC voltage is input between the first and second DC terminals, and a phase correction quantity. A DC current calculation part calculates a current such that the sum of the product of the first command value and a first voltage between the first and second AC terminals and the product of the second command value and a second voltage between the second and third AC terminals equals to the product of a DC current that the third current source supplies and the voltage between the first and second DC terminals. The first and second current sources supply AC currents based upon the first and second command values, and the third current source supplies a DC current.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2019,JPO&INPIT