Title :
A simple and low-cost control strategy for active power filters connected in cascade
Author :
Moran, Luis A. ; Fernandez, Luis ; Dixon, J.W. ; Wallace, R.
Author_Institution :
Dept. of Electr. Eng., Univ. de Conception, Chile
Abstract :
A simple and low-cost control strategy for active power filters implemented with pulsewidth modulation voltage-source inverters (PWM-VSIs) connected in cascade is presented and analyzed in this paper. The principal component of the control circuit is an INTEL 8031 AH microcontroller, which generates the current reference waveforms and respective switching patterns for each inverter. The switching pattern is obtained by using a vector control technique. The proposed active power filter consists of two PWM-VSIs, connected in cascade, each operating at a different switching frequency. This paper presents the proposed control strategy in terms of principles of operation, circuit design and implementation. Finally, predicted results are verified experimentally on a 10 kVA breadboard model.
Keywords :
DC-AC power convertors; PWM invertors; active filters; bipolar transistor switches; insulated gate bipolar transistors; power bipolar transistors; power filters; power semiconductor switches; switching circuits; 10 kVA; 8 bit; INTEL 8031 AH microcontroller; PWM VSI; active power filters; breadboard model; cascade connection; current reference waveforms; power IGBT switches; switching frequency; switching patterns; vector control technique; Active filters; Circuit synthesis; Microcontrollers; Predictive models; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Switching circuits; Switching frequency; Voltage control;
Journal_Title :
Industrial Electronics, IEEE Transactions on
