| Title |
Drive Characteristics of SRM According to Excitation Strategy |
| Authors |
김태영(Kim, Tae-Hvoung) ; 안진우(Ahn, Tin-Woo) |
| Keywords |
Switched Reluctance Motor (SRM) ; 1-phase Excitation ; 2-phase Excitation ; Hybrid Excitation ; Low Vibration ; Low Acoustic Noise |
| Abstract |
A simple construction and low cost, fault tolerant power electronic drive has made the switched reluctance drive a strong contender for many applications. But, switched reluctance drive does exhibit higher levels of vibration and acoustic noise than that of most competing drives. The main source of vibration in the switched reluctance drive is generated by rapid change of radial magnetic force when phase current is extinguished during commutation action. In this paper,2 excitation method is proposed and compared to reduce vibration and acoustic noise of the switched reluctance drive. The excitation strategies considered this research are 1-phase, 2-phase and hybrid excitation method. 1-phase method is a conventional and 2-phase method is excited 2 phases simultaneously. The hybrid excitation has 2-phase excitation by long dwell angle as well as conventional 1-phase excitation. The vibration and acoustic noise are compared and tested. Suggested 2-phase and hybrid strategies reduce acoustic noise because the scheme reduces abrupt change of excitation level by distributed and balanced excitation. |