| Yazarlar |
Doç. Dr. Mikail KOÇ
Türkiye |
|
Tianfu Sun
|
|
Jiabin Wang
|
| Özet |
| Flux observers in direct torque controlled (DTC) motor drives are of paramount importance as the drives rely on estimated variables for feedback control. It is well-known that current-based (CB) estimations are advantageous at low speeds, whereas voltage-based (VB) estimations are more accurate at high speeds. Hence, a large number of state-of-the-art DTC drives utilise closed-loop flux observers in which the CB and VB estimations become dominant at low and high speeds, respectively. However, it has been discovered that the performance and current waveforms with the closed-loop observers significantly deteriorate at low speeds since the residual error of the VB estimation causes current distortions. In addition, these observers have non-linear flux transition trajectory resulting in reduced accuracy during transitions. To improve the low speed performance and achieve the linear transition, an alternative combination of the two estimations is proposed. Experimental results on a 10 kW interior mounted permanent magnet machine drive designed for electric vehicle traction applications validate significant improvements on the drive performance. |
| Anahtar Kelimeler |
| torque control | observers | permanent magnet motors | motor drives | feedback | closed loop systems | machine control | direct torque controlled interior mounted permanent magnet machine drives | voltage-based flux observers | current-based flux observers | DTC motor drives | feedback control | current-based estimations | voltage-based estimations | closed-loop flux observers | VB estimations | CB estimations | current waveforms | current distortions | nonlinear flux transition trajectory | electric vehicl |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
| Dergi Adı | IET POWER ELECTRONICS |
| Dergi ISSN | 1755-4535 |
| Dergi Tarandığı Indeksler | SCI-Expanded |
| Dergi Grubu | Q1 |
| Makale Dili | İngilizce |
| Basım Tarihi | 08-2016 |
| Cilt No | 9 |
| Sayı | 10 |
| Sayfalar | 2052 / 2059 |
| Doi Numarası | 10.1049/iet-pel.2015.0891 |
| Makale Linki | http://digital-library.theiet.org/content/journals/10.1049/iet-pel.2015.0891 |
| Atıf Sayıları | |
| WoS | 15 |
