Torque control of a spherical machine with variable pole pitch
Piscataway, NJ / IEEE Service Center (2002) [Contribution to a conference proceedings]
Conference proceedings / PESC '02, 2002 IEEE 33rd Annual Power Electronics Specialists Conference : Cairns, Queensland, Australia, June 23 - 27, 2002 / PELS. - Vol. 1
de Doncker, Rik W.