Abstract
To study the impact of air-gap magnetic motive force (MMF) on motor performance and control strategies, the mathematical expressions of winding MMF was derived by adopting Fourier analysis and winding function method, when the five-phase permanent magnet synchronous motor (PMSM) was supplied with pulse current. In the meantime, the distribution regularity of harmonic MMF on amplitude _frequency and speed was revealed. The mathematical model for five-phase PMSM with third harmonic winding was established in the rotating coordinate system. The injection ratio of third harmonic current was calculated. Calculation results prove that by injecting third harmonic current, not only is the motor output torque enhanced, but also the magnetic saturation of stator core is reduced.
| Original language | English |
|---|---|
| Pages (from-to) | 1-6 |
| Number of pages | 6 |
| Journal | Dianji yu Kongzhi Xuebao/Electric Machines and Control |
| Volume | 17 |
| Issue number | 10 |
| State | Published - 2013 |
| Externally published | Yes |
Keywords
- Air-gap magnetic motive force
- Five-phase permanent magnet synchronous motors
- Harmonic analysis
- Mathematical model
- Torque density
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