Control Method Suitable for Direct-Torque-Control-Based Motor Drive System Satisfying Voltage and Current Limitations

This paper proposes a control method suitable for limited armature voltage and current in a permanent-magnet synchronous motor drive system based on direct torque control (DTC). First, this paper proposes torque-limiting and flux-weakening controls that are suitable for a DTC-based motor drive system. The proposed method utilizes a mathematical model in a rotating reference frame synchronized to the stator flux linkage. Second, this paper proposes an antiwindup scheme for the torque controller of the DTC system. Windup of the controller degrades the performances of torque-limiting (current-limiting) control and of torque control. Applying the antiwindup results improves the performance of the proposed torque-limiting method in the transient state. This paper presents a DTC-based drive system combined with a speed controller. The proposed system can achieve stable control, and its effectiveness is confirmed experimentally.

[1]  Shigeo Morimoto,et al.  Wide-speed operation of interior permanent magnet synchronous motors with high-performance current regulator , 1994 .

[2]  Lixin Tang,et al.  A novel direct torque controlled interior permanent magnet synchronous machine drive with low ripple in flux and torque and fixed switching frequency , 2004, IEEE Transactions on Power Electronics.

[3]  Marian P. Kazmierkowski,et al.  Direct torque control of PWM inverter-fed AC motors - a survey , 2004, IEEE Transactions on Industrial Electronics.

[4]  Shigeo Morimoto,et al.  Control method for direct torque controlled PMSG in wind power generation system , 2009, 2009 IEEE International Electric Machines and Drives Conference.

[5]  Longya Xu,et al.  A sensorless direct torque control technique for permanent magnet synchronous motors , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[6]  Lixin Tang,et al.  A novel direct torque control for interior permanent magnet synchronous machine drive system with low ripple in torque and flux-a speed sensorless approach , 2002 .

[7]  M.F. Rahman,et al.  A novel direct torque control for interior permanent magnet synchronous machine drive system with low ripple in torque and flux-a speed sensorless approach , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[8]  Shigeo Morimoto,et al.  Examination and Linearization of Torque Control System for Direct Torque Controlled IPMSM , 2008, 2008 IEEE Industry Applications Society Annual Meeting.

[9]  Jawad Faiz,et al.  A novel technique for estimation and control of stator flux of a salient-pole PMSM in DTC method based on MTPF , 2003, IEEE Trans. Ind. Electron..

[10]  Takayoshi Nakano,et al.  A High-Performance Cycloconverter-Fed Synchronous Machine Drive System , 1984, IEEE Transactions on Industry Applications.

[11]  Shigeo Morimoto,et al.  A Novel Method Of Maximum-power operation for IPMSMs in DTC system , 2009, 2009 13th European Conference on Power Electronics and Applications.

[12]  Toshihiko Noguchi,et al.  A New Quick-Response and High-Efficiency Control Strategy of an Induction Motor , 1986, IEEE Transactions on Industry Applications.

[13]  Shigeo Morimoto,et al.  Examination and Linearization of Torque Control System for Direct Torque Controlled IPMSM , 2010 .

[14]  G. Pellegrino,et al.  Optimal exploitation of the Constant Power Region of IPM Drives Based on Field Oriented Control , 2007, 2007 IEEE Industry Applications Annual Meeting.

[15]  M. F. Rahman,et al.  A direct torque controlled interior permanent magnet synchronous motor drive incorporating field weakening , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.