Bianchi, Mikael Andreas and Furlan, Ivan and Balemi, Silvano (2012) Nearly motionless initial angle estimation for non-salient permanent magnet synchronous motors. In: 12th EUSPEN International Conference 12th EUSPEN International Conference, 04.06.2012-08.06.2012, Stockholm, Sweden.
Full text not available from this repository. (Request a copy)Abstract
Permanent magnet synchronous motors (PMSM) are the optimal choice for applications where precise positioning, high dynamics and high efficiency are required. PMSMs need complex control schemes to deliver optimal performance, such as Vector Control (VC) of the stator currents. The aim of VC technique is to maximize the mechanical torque while generating stator currents that produce a rotative magnetic field perpendicular to the magnetic field of the rotor permanent magnets. As a consequence VC needs to know the mechanical angle, i.e. the relative angle between the stator magnetic fields produced by the currents and the rotor magnet field. If absolute encoders are used, the angular position of the magnetic field generated by the rotor permanent magnet can be easily determined and then, consequently, also the mechanical angle. However in order to reduce product costs, relative incremental encoders are often used instead, with the disadvantage that the mechanical angle at start-up is unknown and has to be identified. Two typical solutions are generally used. The first concept uses information about the position-dependent inductance variations caused by inherent saliency or saturation induced saliency. The second concept uses information about rotor movements in function of the stator current [1].
| Item Type: | Article in conference proceedings or Presentation at a conference (Paper) |
|---|---|
| Subjects: | Engineering > Electronic & electrical engineering > Electrical engineering Engineering > Electronic & electrical engineering > Control systems |
| Department/unit: | Dipartimento tecnologie innovative > Istituto sistemi e elettronica applicata > Laboratorio sistemi meccatronici |
| Depositing User: | Mikael Andreas Bianchi |
| Date Deposited: | 26 Sep 2014 05:54 |
| Last Modified: | 14 Sep 2023 17:00 |
| URI: | http://repository.supsi.ch/id/eprint/5425 |
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