Experimental results of a single-phase shunt active filter prototype with diffe...

• Author(s): Neves, Pedro ; Pinto, J. G. ; Pregitzer, Ricardo G. ; Monteiro, Luís F. C. ; Afonso, João L. ; Sepúlveda, João
• Date: 2007
• Persistent ID: http://hdl.handle.net/1822/7657
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Harmonics compensation; Instantaneous reactive power theory; Power factor correction; Power quality; Single-phase shunt active power filter; p-q theory
• Document Type: Conference Object
• Language: English

Description

This paper presents experimental results obtained with a developed single-phase shunt active power filter laboratory prototype operating with different switching techniques. This active filter can compensate harmonic currents and power factor in single-phase electric installations. Its power circuit is based on a two-leg IGBT inverter, with a single capacitor in the dc side, and an inductor in the ac side. Its control system is based on a simple stratagem that enables the use of the traditional Theory of Instantaneous Reactive Power (p-q Theory), originally developed to three-phase power systems, in single-phase systems. The experimental results are obtained for the active filter operating with two different switching techniques: Periodic Sampling (with variable switching frequency) and Pulse Width Modulation (with constant switching frequency) for two different frequencies (8 kHz and 16 kHz). Three different types of loads are used: linear RL load, rectifier with RL load, and rectifier with RC load.