DSP based active power filter with predictive current control

This paper presents an active power filter based on a digital signal processing (DSP) controller with enhanced current control performance. A novel predictive current control method is introduced to compensate the phase error of harmonic components caused by discrete sampling and finite nonnegligible execution time delay. The concept of average current control is also introduced that is adequate for digital current control. With a close coordination between the reference current prediction, PWM pattern generation, and control timing, a high performance control is achieved. Experimental results show that the developed system gives satisfactory performance in harmonic and reactive power compensation.

[1]  Hirofumi Akagi,et al.  Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components , 1984, IEEE Transactions on Industry Applications.

[2]  Current Amplitude.  An Adaptive Current Control Scheme for PWM Synchronous Motor Drives: Analysis and Simulation , 1989 .

[3]  Subhashish Bhattacharya,et al.  Flux-based active filter controller , 1995 .

[4]  L. Gyugyi,et al.  Active ac power filters , 1976 .

[5]  Alan K. Wallace,et al.  An improved PWM technique for AC choppers , 1989 .

[6]  B.S. Acharya,et al.  Active power filters using resonant pole inverters , 1989, Conference Record of the IEEE Industry Applications Society Annual Meeting,.

[7]  Seung-Gi Jeong,et al.  The analysis and compensation of dead-time effects in PWM inverters , 1991 .

[8]  Donald W. Novotny,et al.  Current Control of VSI-PWM Inverters , 1985, IEEE Transactions on Industry Applications.

[9]  Fang Zheng Peng,et al.  A Combined System of Shunt Passive and Series Active Filters , 1990 .

[10]  Thomas G. Habetler,et al.  A space vector-based rectifier regulator for AC/DC/AC converters , 1993 .

[11]  R. Wu,et al.  A PWM AC to DC converter with fixed switching frequency , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.

[12]  Yoshihiro Murai,et al.  Waveform Distortion and Correction Circuit for PWM Inverters with Switching Lag-Times , 1987, IEEE Transactions on Industry Applications.

[13]  Johann W. Kolar,et al.  Analysis of on- and off-line optimized predictive current controllers for PWM converter systems , 1991 .

[14]  Hirofumi Akagi,et al.  Control Strategy of Active Power Filters Using Multiple Voltage-Source PWM Converters , 1986, IEEE Transactions on Industry Applications.

[15]  Gyu-Ha Choe,et al.  Analysis and control of active power filter with optimized injection , 1986, 1986 17th Annual IEEE Power Electronics Specialists Conference.