Three effective vectors-based current control scheme for four-switch three-phase trapezoidal brushless DC motor

This study presents a novel three effective vectors (TEV) current control scheme for four-switch three-phase inverter in cost-effective brushless DC motor drive with improved performance. This scheme overcomes the possible distortion of three-phase currents caused by phase C back-EMF, and quasi-square current waveforms are attained by inserting two adjusting vectors in each control period based on the conventional switching modulation scheme. The duty cycles of the two adjusting vectors are further calculated using a simple P controller. Integral variable structure control principle with advantages of high bandwidth and strong robustness against external disturbance is used to control the tracing of reference current by actual currents. The stability of the proposed TEV current control scheme is demonstrated by selecting a candidate Lyapunov function, based on which the range of duty cycles of adjusting vectors are also determined. Experimental results verify that the proposed scheme is simple and can provide small current ripple, with good performance in speed.

[1]  Hyun-Soo Kim,et al.  A new instantaneous torque control of PM synchronous motor for high performance direct drive applications , 1997 .

[2]  H.A. Toliyat,et al.  Direct Torque Control of Four-Switch Brushless DC Motor With Non-Sinusoidal Back EMF , 2010, IEEE Transactions on Power Electronics.

[3]  A. Emadi,et al.  Theory and Implementation of a Simple Digital Control Strategy for Brushless DC Generators , 2011, IEEE Transactions on Power Electronics.

[4]  C.B. Jacobina,et al.  A General PWM Strategy for Four-Switch Three-Phase Inverters , 2006, IEEE Transactions on Power Electronics.

[5]  Khoa Dang Hoang,et al.  Influence and Compensation of Inverter Voltage Drop in Direct Torque-Controlled Four-Switch Three-Phase PM Brushless AC Drives , 2011, IEEE Transactions on Power Electronics.

[6]  Ali Emadi,et al.  Stability Analysis of FPGA-Based Control of Brushless DC Motors and Generators Using Digital PWM Technique , 2012, IEEE Transactions on Industrial Electronics.

[7]  H. Moghbelli,et al.  A Novel Position Sensorless Control of a Four-Switch, Brushless DC Motor Drive Without Phase Shifter , 2008, IEEE Transactions on Power Electronics.

[8]  Sangshin Kwak,et al.  Light Fuel-Cell Hybrid Electric Vehicles Based on Predictive Controllers , 2011, IEEE Transactions on Vehicular Technology.

[9]  Chris Gerada,et al.  A Single Sided Matrix Converter Drive for a Brushless DC Motor in Aerospace Applications , 2012, IEEE Transactions on Industrial Electronics.

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

[11]  Frede Blaabjerg,et al.  A new optimized space-vector modulation strategy for a component-minimized voltage source inverter , 1997 .

[12]  Changliang Xia,et al.  A New Approach of Minimizing Commutation Torque Ripple for Brushless DC Motor Based on DC–DC Converter , 2010, IEEE Transactions on Industrial Electronics.

[13]  Mehrdad Ehsani,et al.  On the feasibility of four-switch three-phase BLDC motor drives for low cost commercial applications: topology and control , 2003 .

[14]  Jin Zhao,et al.  A Comprehensive Investigation of Four-Switch Three-Phase Voltage Source Inverter Based on Double Fourier Integral Analysis , 2011, IEEE Transactions on Power Electronics.

[15]  Kwang-Woon Lee,et al.  Commutation torque ripple reduction in a position sensorless brushless DC motor drive , 2006, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[16]  Chung-Wen Hung,et al.  Position Sensorless Control for Four-Switch Three-Phase Brushless DC Motor Drives , 2008 .

[17]  Yasser Abdel-Rady I. Mohamed,et al.  A Newly Designed Instantaneous-Torque Control of Direct-Drive PMSM Servo Actuator With Improved Torque Estimation and Control Characteristics , 2007, IEEE Transactions on Industrial Electronics.

[18]  M.N. Uddin,et al.  Fuzzy-logic-controller-based cost-effective four-switch three-phase inverter-fed IPM synchronous motor drive system , 2006, IEEE Transactions on Industry Applications.