Abstract
Permanent-magnet synchronous machine (PMSM) design is limited by peak magnetic flux due to material saturation or available permanent magnet remanence, RMS current due to losses and speed due to centrifugal forces. This paper describes the theoretical limit of torque density in a surface-mounted PMSM given these constraints and a means to approach it. It also explains an integrated methodology to design the high torque density motor in which each slot pair of the machine has individually controlled currents. Recent advances in device technology making power transistors faster, smaller and lighter will be the key enabler of such fine grained commutation. The integrated motor drives, apart from being compact, will eliminate separate heat sinks for inverter and motor.
Original language | English (US) |
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Title of host publication | Proceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012 |
Pages | 671-677 |
Number of pages | 7 |
DOIs | |
State | Published - 2012 |
Externally published | Yes |
Event | 2012 20th International Conference on Electrical Machines, ICEM 2012 - Marseille, France Duration: Sep 2 2012 → Sep 5 2012 |
Other
Other | 2012 20th International Conference on Electrical Machines, ICEM 2012 |
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Country/Territory | France |
City | Marseille |
Period | 9/2/12 → 9/5/12 |
Keywords
- BLDCM
- Electronic commutation
- Harmonic torque
- Machine design
- Multi phase machine
- PMSM
- Torque density
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Mechanical Engineering