The Dynamic Voltage Restorer (DVR) is a commercially available, popular device to eliminate voltage sags and swells in the distribution lines. Its basic function is to inject the voltage difference (difference between the pre-sag and sag voltage) to the power line and maintains the pre-sag voltage condition in the load side. The efficiency of the DVR depends on the performance of the efficiency control technique involved in switching the inverters. Z-source inverters are recent topological options proposed for buck–boost energy conversion with a number of possible voltage- and current-type circuitries. Common feature noted is their inclusion of an LC impedance network, placed between the dc input source and inverter bridge. This impedance network allows the output end of a voltage-type Z-source inverter to be shorted for voltage boosting without causing a large current flow and the terminal current of a current-type inverter to be interrupted for current boosting without introducing overvoltage oscillations to the system. Therefore, Z-source inverters are, in effect, safer and less complex and can be implemented using only passive elements with no additional active semiconductor needed. This paper presents a selective harmonic elimination using flying capacitor connection in Z-source inverter. Close loop control for a simple system is modeled and simulated using MATLAB software. The simulation results are presented to demonstrate the effectiveness of the proposed DVR system.
somasundaram, D., & S, R. (2013). Harmonic Reduction Technique Using Flying Capacitor Based Z Source Inverter for a DVR. International Journal of Engineering, 26(3), 309-314.
MLA
deepa somasundaram; rajapandian S. "Harmonic Reduction Technique Using Flying Capacitor Based Z Source Inverter for a DVR". International Journal of Engineering, 26, 3, 2013, 309-314.
HARVARD
somasundaram, D., S, R. (2013). 'Harmonic Reduction Technique Using Flying Capacitor Based Z Source Inverter for a DVR', International Journal of Engineering, 26(3), pp. 309-314.
VANCOUVER
somasundaram, D., S, R. Harmonic Reduction Technique Using Flying Capacitor Based Z Source Inverter for a DVR. International Journal of Engineering, 2013; 26(3): 309-314.