Improved torque and efficiency of a four switch three phase inverter fed induction motor drive

In this paper, an improved flux weakening control scheme for Four Switch Three Phase Inverter (FSTPI) to produce maximum torque and achieve high motor efficiency in the high-speed region is proposed. In the proposed scheme, a method to generate the optimal flux reference for an FSTPI to enable maximum torque production in the high-speed region is explained in detail. The slip frequency reference is also improved by proposing a method to calculate the optimal rotor time constant. The feasibility of the proposed method is verified by simulation and validated by experimental results which show that the maximum attainable torque and motor efficiency increased in the high-speed region.

[1]  Thomas A. Lipo,et al.  VSI-PWM rectifier/inverter system with a reduced switch count , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[2]  Mamiko Inamori,et al.  Instantaneous vector control of four switch three phase inverter fed induction motor drive , 2016, 2016 19th International Conference on Electrical Machines and Systems (ICEMS).

[3]  Frede Blaabjerg,et al.  Adaptive SVM to compensate DC-link voltage ripple for four-switch three-phase voltage-source inverters , 1999 .

[4]  Jacobus Daniel van Wyk,et al.  A Comparative Investigation of a Three-Phase Induction Machine Drive with a Component Minimized Voltage-Fed Inverter under Different Control Options , 1984 .

[5]  Mamiko Inamori,et al.  Field oriented control of two phase inverter to drive a three phase induction motor , 2015, 2015 18th International Conference on Electrical Machines and Systems (ICEMS).

[7]  Yang Kong-liang.  Maximum Torque Control of an Induction Machine in the Field Weakening Region , 2012 .

[8]  Wen Shi,et al.  Hybrid Space Vector Modulation Strategy for Torque Ripple Minimization in Three-Phase Four-Switch Inverter-Fed PMSM Drives , 2017, IEEE Transactions on Industrial Electronics.

[9]  Jaehong Kim,et al.  A Current Distortion Compensation Scheme for Four-Switch Inverters , 2009, IEEE Transactions on Power Electronics.

[10]  A.M.S. Mendes,et al.  Thermal Performance of a Three-Phase Induction Motor Under Fault Tolerant Operating Strategies , 2008, IEEE Transactions on Power Electronics.

[11]  X. Xu,et al.  Selecting the flux reference for induction machine drives in the field weakening region , 1991, Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting.

[12]  Antonio J. Marques Cardoso,et al.  Performance analysis of three-phase induction motor drives under inverter fault conditions , 2003, 4th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, 2003. SDEMPED 2003..

[13]  A.M.N. Lima,et al.  An induction motor drive system with improved fault tolerance , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).