Title :
Time delay related ineffectivity in dynamic compensation of nonactive power
Author :
le Roux, W. ; van Wyk, J.D.
Author_Institution :
Ind. Electron. Technol. Res. Group, Rand Afrikaans Univ., Johannesburg, South Africa
Abstract :
The effect of the delay time on the reference signal for compensation due to the data acquisition and digital signal processing is examined. The time delay will cause incorrect compensation and unwanted remaining nonactive power after compensation. A theoretical evaluation is done on the negative effect on compensation due to a single frequency distortion. This evaluation is expanded to handle multiple harmonic distortion to calculate the total theoretical ineffectivity of compensation for a specific load due to a specific time delay. Finally, the theoretical evaluations are validated by means of experimental results
Keywords :
PWM invertors; compensation; data acquisition; digital signal processing chips; harmonic distortion; power system harmonics; reactive power; PWM inverter; compensation; data acquisition; digital signal processing; dynamic compensation; incorrect compensation; multiple harmonic distortion; nonactive power; reference signal; single frequency distortion; time delay related ineffectivity; unwanted remaining nonactive power; Africa; Computer errors; Delay effects; Frequency; Industrial electronics; Power harmonic filters; Power system harmonics; Signal processing; Time measurement; Voltage;
Conference_Titel :
Harmonics and Quality of Power Proceedings, 1998. Proceedings. 8th International Conference On
Conference_Location :
Athens
Print_ISBN :
0-7803-5105-3
DOI :
10.1109/ICHQP.1998.759967
