Written in English
|The Physical Object|
|Number of Pages||63|
Analysis and Reduction of Cogging Torque of Line-Start Permanent Magnet Motors Libing Jing*, Jun Gong, and Ying Lin Abstract—Compared with a standard permanent magnet synchronous motor, a line-start permanent magnet synchronous motor (LSPMSM) has additional features that include two-sided slots on its stator and Size: KB. Cogging torque and torque ripple analysis of permanent magnet ﬂux-switching their single-stator counterparts; this characteristic is noted and justiﬁed in [19, 20] and , respectively. Moreover, the investigated machine has a good fault-tolerant feature owing to the. J. Si et al.: The Characteristics Analysis and Cogging Torque Optimization of a Surface-Interior Permanent Magnet Synchronous Motor 43 g gg D Sl (8) Where Rsm0 is the magnetic resistance of one SPM, Rim0 is the magnetic resistance of one IPM, Rr1 is the magnetic resistance of rotor core in No.1 path, Rr2 is theFile Size: 3MB. Request PDF | Cogging Torque Analysis of Flux-Switching Permanent Magnet Motor | A novel doubly salient permanent magnet motor named flux switch permanent magnet motor .
Request PDF | Tooth-slot cogging torque and noise analysis of permanent magnet motors | Cogging torque is one of the sources which cause noise in a permanent magnet (PM) motor . Abstract. Cogging torque exists between rotor mounted permanent magnets and stator teeth due to magnetic attraction and this is an undesired phenomenon which produces output ripple, vibration and noise in machines. The purpose of this paper is to study the existence and effects of cogging torque, and to present a novel, rapid, half magnet pole pair technique for forecasting and evaluating cogging by: Cogging torque is a pulsating, parasitic and undesired torque ripple intrinsic of the design of a permanent magnet synchronous generator (PMSG), which should be minimized due to its adverse. ZHU AND HOWE: INFLUENCE OF DESIGN PARAMETERS ON COGGING TORQUE IN PERMANENT MAGNET MACHINES Fig. 5. Variation of peak cogging torque with slot number in 2-pole motor. TABLE II FACTOR C FOR TYPICAL 2-POLE BRUSHED PM MOTORS with overlapping windings all edges of magnets would face slot openings. Fig. 5 shows the variation of the peak cogging.
Cogging Torque Measurement, Moment of Inertia Determination and Sensitivity Analysis of an Axial Flux Permanent Magnet AC motor DCT Traineeship report Traineeship performed at the Charles Darwin University, Darwin, Australia Coach(es): dr. ir. F. de Boer G. Heins Supervisor: M. Steinbuch Technische Universiteit Eindhoven. We study two methods to reduce cogging torque, both based on the analysis of the rotational symmetry in a brushless permanent-magnet motor. The first one seeks to lower the symmetry in the flux of. To examine the cause of the cogging force, the flux density distribution at the position (timing) circled in blue in fig. 1 is shown in fig. 2. Fig. 2 shows that the flux density at the end of the mover is not evenly distributed. This imbalance of the magnetic circuit is the key factor that causes large cogging ripples. An improved pole arc combination method to minimize the cogging torque in the interior permanent magnet brushless dc motor with flux-concentration type rotor is presented.