1P. Vas.Parameter Estimation Condition Monitoring, and Diagno- sis of Electrical Machines[]..1993
2J.Kaukonen.Salient pole syn- chronous machine modeling in an in- dustrial direct torque controlled drive application[]..1999
3Blaschke F.The principle of field orientation as ap-plied to the new transvector closed loop control sys-tem for rotating-field machines[].SIAM Review.1972