C-Type Magnet Topology for PMBLDC Motor Based Ceiling Fan
- Resource Type
- Authors
- Bhim Singh; Sharankumar Shastri; Utkarsh Sharma
- Source
- 2021 IEEE International Electric Machines & Drives Conference (IEMDC).
- Subject
- Physics
business.product_category
Stator
Rotor (electric)
020208 electrical & electronic engineering
Magnetic flux leakage
02 engineering and technology
Topology
01 natural sciences
Flux linkage
Magnetic flux
law.invention
Quantitative Biology::Subcellular Processes
law
Magnet
0103 physical sciences
0202 electrical engineering, electronic engineering, information engineering
Torque
010306 general physics
business
Ceiling fan
- Language
This paper presents a novel C-type magnet topology - permanent magnet brushless DC (CMT-PMBLDC) motor operating at low-speed for ceiling fan application. The C-type PM rotor features additional magnets encompassing the stator stack in the axial plane. The top and bottom magnets utilize the end winding leakage flux generated in a comparatively smaller stack length motor used in a ceiling fan and generate higher torque because of efficient flux utilization. Compared with the conventional radial flux permanent magnet brushless DC (RF-PMBLDC) motor with radially magnetized PMs, this topology achieves enhanced resultant torque. Influences of axial rotor magnets' position, magnetization direction, and dimensions on the output torque and output power are investigated. A comparison between electromagnetic performances confirms the torque enhancement and improvement in the total flux linkage in this motor topology using 3D FE analysis. In this motor, a reduction in net input power compared to conventional RF-PMBLDC is achieved.