Control of Single-Phase-to-Three-Phase AC/DC/AC PWM Converters for Induction Motor Drives

This paper proposes a novel control scheme of single-phase-to-three-phase pulsewidth-modulation (PWM) converters for low-power three-phase induction motor drives, where a single-phase half-bridge PWM rectifier and a two-leg inverter are used. With this converter topology, the number of switching devices is reduced to six from ten in the case of full-bridge rectifier and three-leg inverter systems. In addition, the source voltage sensor is eliminated with a state observer, which controls the deviation between the model current and the system current to be zero. A simple scalar voltage modulation method is used for a two-leg inverter, and a new technique to eliminate the effect of the dc-link voltage ripple on the inverter output current is proposed. Although the converter topology itself is of lower cost than the conventional one, it retains the same functions such as sinusoidal input current, unity power factor, dc-link voltage control, bidirectional power flow, and variable-voltage and variable-frequency output voltage. The experimental results for the V/f control of 3-hp induction motor drives controlled by a digital signal processor TMS320C31 chip have verified the effectiveness of the proposed scheme

[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]  P. Enjeti,et al.  A new single phase to three phase converter with active input current shaping for low cost AC motor drives , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[3]  B. R. Lin,et al.  Single-phase half-bridge rectifier with power factor correction , 2004 .

[4]  A.M.N. Lima,et al.  Induction motor drive system for low power applications , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[5]  A. W. Green,et al.  Current-forced single-phase reversible rectifier , 1989 .

[6]  Kevin Barraclough,et al.  I and i , 2001, BMJ : British Medical Journal.

[7]  Ned Mohan,et al.  Sinusoidal line current rectification with a 100kHZ B-SIT step-up converter , 1984, 1984 IEEE Power Electronics Specialists Conference.

[8]  Isao Takahashi,et al.  Simple Sensorless Control of a Sinusoidal Input Current PWM Converter , 1998 .

[9]  Lin Lin,et al.  3-D track initiation in clutter using 2-D radar measurements , 2002 .

[10]  C.B. Jacobina,et al.  Vector and scalar control of a four switch three phase inverter , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[11]  Edison Roberto Cabral da Silva,et al.  Control of the single-phase three-leg AC/AC converter , 2006, IEEE Transactions on Industrial Electronics.

[12]  Herbert N. Hickok.  Adjustable Speed---A Tool for Saving Energy Losses in Pumps, Fans, Blowers, and Compressors , 1985, IEEE Transactions on Industry Applications.

[13]  Ramesh Oruganti,et al.  A unity power factor converter using half-bridge boost topology , 1998 .

[14]  Bor-Ren Lin,et al.  Half-bridge neutral point diode clamped rectifier for power factor correction , 2002 .

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

[16]  Tian-Hua Liu.  A maximum torque control with a controlled capacitor for a single-phase induction motor , 1995, IEEE Trans. Ind. Electron..

[17]  J. Pou,et al.  Modulation techniques for a low-cost single-phase to three-phase converter , 2004, 2004 IEEE International Symposium on Industrial Electronics.

[18]  Seung-Ki Sul,et al.  Inverter output voltage synthesis using novel dead time compensation , 1996 .

[19]  Nobuyuki Matsui,et al.  Stability and Initial Estimation of Power Source Voltage Sensorless Single-Phase PWM AC/DC Converter , 1996 .

[20]  Toshihiko Noguchi,et al.  Direct power control of PWM converter without power source voltage sensors , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.