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Three-phase currents of STATCOM with conventional control strategy will be unbalanced and distorted when the STATCOM operates at the condition of non-ideal grid voltages. Special attention was paid to the influence of grid voltage quality on STATCOM current and a new control strategy was presented to counteract the influence in this paper. The unbalance and non-sine distortion of grid voltage causes...
The transient performance of 3-phase 4-wire self-excited induction generator (SEIG) feeding various types of linear and non-linear loads is analyzed in detail. The reactive power of SEIG and the load are being controlled by a 3-phase 4-wire configuration of static compensator (STATCOM). The STATCOM is an insulated gate bipolar transistor (IGBT) based, pulse width modulation (PWM) operated, four-leg...
This paper is concerned with the design and simulation of a pulse width modulation (PWM) rectifier for three-phase Permanent Magnetic motor drive. Based on the mathematical model of PWM rectifier, the dual-close-loop engineering design with decoupled feed-forward control is applied in the 3-phase voltage source rectifier. The objective to be reached is to realize unity power factor at the input ac...
In view of STATCOM operation analysis, special attention must be paid to the operation with unbalanced network voltages. In this paper a control algorithm that enables STATCOM operation with unbalanced voltages is presented. The algorithm is based on the compensator mathematical model in the d-q coordinate system. In case of an unbalanced voltage sag the compensator unbalances the generated voltages...
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