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A new control approach to three-phase active filter for harmonics and reactive power compensation

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3 Author(s)
Singh, Bhim ; Dept. of Electr. Eng., Indian Inst. of Technol., New Delhi, India ; Al-Haddad, K. ; Chandra, A.

This paper deals with a new control scheme for a parallel 3-phase active filter to eliminate harmonics and to compensate the reactive power of the nonlinear loads. A 3-phase voltage source inverter bridge with a DC bus capacitor is used as an active filter (AF). A hysteresis based carrierless PWM current control is employed to derive the switching signals to the AF. Source reference currents are derived using load currents, DC bus voltage and source voltage. The command currents of the AF are derived using source reference and load currents. A 3-phase diode rectifier with capacitive loading is employed as the nonlinear load. The AF is found effective to meet IEEE-519 standard recommendations on the harmonics level

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Power Systems, IEEE Transactions on  (Volume:13 ,  Issue: 1 )