A method optimizing the working point of three-phase three-wire system with nonlinear load

摘要

The working point of a three-phase three-wire system with a sinusoidal voltage source and a nonlinear load is optimized imposing an additional condition: we require that the active power consumed by nonlinear loads be the same before and after the optimization. This approach allows for reducing the RMS value of the source currents and for minimizing their deformations caused by nonlinear load. The solution is obtained by Lagrange's factors and by a suitable measurement experiment. The last point is to determine the parameters of the compensator in order that it may generate an active current of the voltage sources. This working point can be obtained by means of the LC, RLC or (RLC, -R) compensator.