| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel controller of an induction machine which controls the control amount of an induction machine by operation of AC voltage application means for applying an AC voltage to the induction machine, on the basis of an estimated secondary magnetic flux.SOLUTION: The secondary magnetic flux &phgr;d2e, &phgr;q2e calculated by a magnetic flux observer 48 is corrected in a magnetic flux correction unit 50. The secondary magnetic flux &phgr;d2e, &phgr;q2e is integrated over a period equal to an integer times of one period of the primary phase &thetas;1, and the secondary magnetic flux &phgr;d2e, &phgr;q2e is corrected by an operation amount for bringing the integral value to zero by feedback control. |
