Direct Torque Control for Permanent-Magnet Synchronous Machines Based on Duty Ratio Modulation

作者：Niu, Feng^*; Li, Kui; Wang, Yao

来源：IEEE Transactions on Industrial Electronics, 2015, 62(10): 6160-6170.

DOI：10.1109/TIE.2015.2426678

• Direct torque control (DTC)
• duty ratio modulation (DRM)
• permanent-magnet synchronous machine (PMSM)
• stator flux ripple
• torque ripple

This paper proposes a novel duty ratio modulated direct torque control (DDTC) to concurrently reduce torque ripple and stator flux ripple that are typically associated with conventional direct torque control (DTC). Three different methods of duty ratio determination are presented to achieve various control objectives, namely DDTC-final, DDTC-mean and DDTC-rms. Additionally, adjustable error weight coefficients are introduced to balance the torque ripple reduction and stator flux ripple reduction. Experimental results are presented to validate the effectiveness of proposed DDTC. Furthermore, the comparative evaluation of proposed DDTC, conventional DDTC and DTC is conducted on the basis of several criteria to verify the superiority of proposed DDTC.

• 出版日期2015-10
• 单位河北工业大学