This paper discusses the analysis and design of a very thin slotless permanent magnet （PM） brushless motor whose stator laminations are manufactured from a single strip of steel that is edge wound into a spiral （li...This paper discusses the analysis and design of a very thin slotless permanent magnet （PM） brushless motor whose stator laminations are manufactured from a single strip of steel that is edge wound into a spiral （like a ＂Slinky＂） and then fitted over the windings that are preformed on the outside surface of a non-conducting former. Analytical and finite element analysis （FEA） are used to determine the con- strained optimum dimensions of a motor used to drive a rim driven thruster in which the motor rotor is fit- ted onto the rim of the propeller and the stator is encapsulated in the thin Kort nozzle of the thruster. The paper describes the fabrication of a demonstrator motor and presents experimental results to validate the theoretical calculations. Experimental motor performance results are also reported and compared with those of a slotted motor that fits within the same active radial dimensions as the slotless motor. The slotless motor, which has longer active length and endwindings, and thicker magnets than the slotted motor, was found to be less efficient and more expensive （prototype cost） than the slotted machine.展开更多
[文献来源]MOYER A M,VOGEL J D,LAI S H,et al.Total neoadjuvant therapy in rectal cancer:multi-center comparison of induction chemotherapy and long-course chemoradiation versus short-course radiation and consolidative c...[文献来源]MOYER A M,VOGEL J D,LAI S H,et al.Total neoadjuvant therapy in rectal cancer:multi-center comparison of induction chemotherapy and long-course chemoradiation versus short-course radiation and consolidative chemotherapy[J].J Gastrointest Surg,2023.doi:10.1007/s11605-023-05601-3.背景:局部进展期直肠癌的全程新辅助治疗(total neoadju⁃vant therapy,TNT)可能包括诱导化疗+长程放化疗或短程放疗+巩固化疗。展开更多
文摘This paper discusses the analysis and design of a very thin slotless permanent magnet （PM） brushless motor whose stator laminations are manufactured from a single strip of steel that is edge wound into a spiral （like a ＂Slinky＂） and then fitted over the windings that are preformed on the outside surface of a non-conducting former. Analytical and finite element analysis （FEA） are used to determine the con- strained optimum dimensions of a motor used to drive a rim driven thruster in which the motor rotor is fit- ted onto the rim of the propeller and the stator is encapsulated in the thin Kort nozzle of the thruster. The paper describes the fabrication of a demonstrator motor and presents experimental results to validate the theoretical calculations. Experimental motor performance results are also reported and compared with those of a slotted motor that fits within the same active radial dimensions as the slotless motor. The slotless motor, which has longer active length and endwindings, and thicker magnets than the slotted motor, was found to be less efficient and more expensive （prototype cost） than the slotted machine.
文摘[文献来源]MOYER A M,VOGEL J D,LAI S H,et al.Total neoadjuvant therapy in rectal cancer:multi-center comparison of induction chemotherapy and long-course chemoradiation versus short-course radiation and consolidative chemotherapy[J].J Gastrointest Surg,2023.doi:10.1007/s11605-023-05601-3.背景:局部进展期直肠癌的全程新辅助治疗(total neoadju⁃vant therapy,TNT)可能包括诱导化疗+长程放化疗或短程放疗+巩固化疗。
