H. Wertz et al., “Computer aided commissioning of speed and position control for electrical drives with identification of mechanical load,”10.1109/ias.1999.799174__1999, doi:10.1109/ias.1999.799174 .

N. Fröhleke, R. Pieper, H. Mundinger, and H. Grotstollen, “Computer aided investigation of the auxiliary resonant commutated pole converter for wide range applications such as welding power supplies,”10.1109/iecon.1999.816530__1999, doi:10.1109/iecon.1999.816530 .

A. Bünte, Selbsteinstellender Antrieb mit drehmomentoptimal betriebenem Asynchronmotor. 1999.

T. Schulte and N. Fröhleke, “Parameter identification of ultrasonic motors,”10.1109/aim.1999.803149__1999, doi:10.1109/aim.1999.803149 .

F. Schutte, S. Beineke, and H. Grotstollen, “Knowledge based controller selection for electrical drives with imperfect mechanic,”10.1109/iecon.1998.722864__1998, doi:10.1109/iecon.1998.722864 .

J. Maas, Modellierungund Regelung stromrichtergespeister Ultraschall-Wanderwellenmotoren. 1998.

S. Beinke, H. Wertz, F. Schutte, H. Grotstollen, and N. Fröhleke, “Identification of nonlinear two-mass systems for self-commissioning speed control of electrical drives,”10.1109/iecon.1998.724071__1998, doi:10.1109/iecon.1998.724071 .

P. Wallmeier, J. Richter, N. Fröhleke, H. Grotstollen, L. Langemeyer, and B. Margaritis, “A high efficiency single-phase power factor corrected switched mode rectifier,”10.1109/iecon.1998.724175__1998, doi:10.1109/iecon.1998.724175 .

P. Wallmeier, N. Fröhleke, and H. Grotstollen, “Improved analytical modeling of conductive losses in gapped high-frequency inductors,”10.1109/ias.1998.730254__1998, doi:10.1109/ias.1998.730254 .

P. Wallmeier, N. Fröhleke, and H. Grotstollen, “Automated optimization of high frequency inductors,”10.1109/iecon.1998.724147__1998, doi:10.1109/iecon.1998.724147 .

P. Ide, N. Froehleke, and H. Grotstollen, “Investigation of low cost control schemes for a selected 3-level switched mode rectifier,”10.1109/intlec.1997.645920__1997, doi:10.1109/intlec.1997.645920 .

P. Ide, N. Froehleke, and H. Grotstollen, “Comparison of selected 3-phase switched mode rectifiers,”10.1109/intlec.1997.646061__1997, doi:10.1109/intlec.1997.646061 .

J. Sun and H. Grotstollen, “Fast time-domain simulation by waveform relaxation methods,”10.1109/pesc.1996.548800__1997, doi:10.1109/pesc.1996.548800 .

S. Beineke, F. Schutte, and H. Grotstollen, “Online identification of nonlinear mechanics using extended Kalman filters with basis function networks,”10.1109/iecon.1997.671069__1997, doi:10.1109/iecon.1997.671069 .

S. Beineke, F. Schutte, H. Wertz, and H. Grotstollen, “Comparison of parameter identification schemes for self-commissioning drive control of nonlinear two-mass systems,”10.1109/ias.1997.643068__1997, doi:10.1109/ias.1997.643068 .

J. Maas and H. Grotstollen, “Averaged model of inverter-fed ultrasonic motors,”10.1109/pesc.1997.616802__1997, doi:10.1109/pesc.1997.616802 .

F. Schutte, S. Beineke, A. Rolfsmeier, and H. Grotstollen, “Online identification of mechanical parameters using extended Kalman filters,”10.1109/ias.1997.643069__1997, doi:10.1109/ias.1997.643069 .

J. Maas, T. Schulte, and H. Grotstollen, “Optimized drive control for inverter-fed ultrasonic motors,”10.1109/ias.1997.643144__1997, doi:10.1109/ias.1997.643144 .

P. Wallmeier and H. Grotstollen, “Magnetic shielding applied to high-frequency inductors,”10.1109/ias.1997.629003__1997, doi:10.1109/ias.1997.629003 .

A. Fiedler and H. Grotstollen, “Simulation of power electronic circuits with principles used in wave digital filters,”10.1109/ias.1995.530613__1997, doi:10.1109/ias.1995.530613 .