In this paper, a minimally switched control algorithm for a three-phase four-leg voltage source inverter topology is proposed for compensation of unbalanced and nonlinear loads. An optimized control technique is necessary for the three-phase four-leg topology, otherwise it requires higher switching operations of the switches in the voltage source inverter for tracking three-phase and neutral currents through conventional hysteresis band control. In the paper, a control technique has been formulated and its effect of reducing the switching frequency over a period of time has been studied and verified. A simulation study of three-phase, four-wire compensated system is carried out using Matlab/Simulink to validate the proposed method. Detailed experimental results presented further confirm the efficacy of the proposed control.
No takes yet. Share an insight, caveat, or question.
Lohia et al. (2008) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: