• Engineering
  • Published 2007

Control Strategy of Fourth Leg in Four-leg Inverter

  title={Control Strategy of Fourth Leg in Four-leg Inverter},
  author={Liu Xiu-chong},
Four-leg inverters are used to supply three-phase balanced voltages under an unbalanced/nonlinear load condition. As the fourth leg exists in the inverters, the control of the inverter is coupled and very complex. In many papers the decoupling transformation matrix is given and a decoupled control method is proposed, but the essence of the control law for four-leg inverters is not discovered. In this paper, based on analyzing the function of the fourth leg and studying the control law for four… CONTINUE READING