PMSM Control using the 3DSVPWM to Decrease Motor Torque Ripple and Motor Current THD with a New Model

Abstract

In this paper, a new model for a PMSM (permanent magnet synchronous motor) driver is proposed. The proposed model is envisioned as a better modulating drive current waveform. In the proposed system the modulating drive motor current waveform is more similar to ideal sinusoidal waveform. Advanced IGBTs and snubber circuits can be employed in the design of the driver to obtain high performance with a simultaneous reduction in THD (total harmonic distortion) and torque ripple of the motor. The proposed concept offers a significant decreasing for driver harmonics compared to classical SVPWM used. The inverter can be operated in 3-phase and 20 kHz switching frequency. A PMSM motor is operated at 3kW and 48V with the proposed model is evaluated via simulation with a corresponding SVPWM (space vector pulse width modulation) method. Results of torque ripple and THD of the motor currents on the model are discussed.

Keywords

• Motor Torque Ripple,PMSM,SVPWM,THD

PMSM Control using the 3DSVPWM to Decrease Motor Torque Ripple and Motor Current THD with a New Model

Öz

Bu çalışmada, bir SMSM (sabit mıknatıslı senkron motor) sürücüsü için yeni bir model önerilmiştir. Önerilen model, daha iyi modüle edici bir tahrik akımı dalga biçimi olarak öngörülmüştür. Önerilen sistemde, modülasyonlu tahrik motor akımı dalga formu ideal sinüzoidal dalga formuna daha benzerdir. THB (toplam harmonik bozulma) ve tork dalgalanmasında azalma ile yüksek performans elde etmek maksadıyla sürücünün tasarımında gelişmiş IGBT'ler ve sönümleme devreleri kullanılabilir. Önerilen konsept, kullanılan klasik SVPWM'ye kıyasla sürücü harmonikleri için önemli bir düşüş sunuyor. Evirici, 3 faz ve 20 kHz anahtarlama frekansında çalıştırılabilir. Bir PMSM motoru, önerilen model ile 3kW ve 48V'da çalıştırılır ve bir UVDGM (uzay vektörü darbe genişliği modülasyonu) metodu ile simülasyon yoluyla değerlendirilir. Modeldeki motor akımlarının tork dalgalanması ve THB sonuçları tartışılmıştır.

Anahtar Kelimeler

• Motor Torkunda Dalgalanmalar,SMSM,UVDGM,THB

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