| Author(s) | Maamar Taleb |
| Affiliation | Department of Electrical and Electronics Engineering, University of Bahrain, P.O. Box 32038, Isa Town, Bahrain Email: maamar@eng.uob.bh |
| Title | An Active Voltage Conditioner for Power Distribution Systems |
| Source | Journal of King Saud University. Engineering Sciences. Volume 18, No 2. (2006/1426) |
| Abstract | This paper presents a model for an active voltage conditioner. This voltage conditioner is useful for power distribution systems in which power quality issue is of primary concern. The voltage conditioner consists a static var compensator (SVC ) and a series active voltage conditioner (AVC). The SVC type is a thyristor-controlled reactor (TCR). When using the SVC configuration individually, it is found that the rms value of load voltage is kept close to a desired/pre-set rms value, but unfortunately a considerate amount of harmonics is noted in the load voltage waveform. Computer simulations show that a 14.5% total harmonic distortion factor (THD) can be found in the load voltage waveform. Thus, an AVC is introduced in series with the SVC to take care of harmonics cancellation. The AVC is made of a single phase full wave bridge rectifier, a bridge inverter, and a series transformer. The bridge inverter is controlled by a simple hysterisis control circuit. When using the AVC in conjunction with the SVC, it showed the load voltage is kept near the desired rms value and no more than 0.98% total harmonic distortion factor (THD) is found its waveform. The performance of the SVC as well as the one of the AVC are obtained from MATLAB/SIMULINK computer simulation program. Keywords: Static voltage compensators, Active voltage conditioners, Power system harmonics, Power quality, MATLAB simulation, Electrical engineering education |
