Single-phase active rectifiers in a cascade frequency converter

Abstract

A breadboard model of the store of kinetic energy with an asynchronized electric machine and a cascade frequency converter in a rotor circuit is created. The converter is executed on the basis of a single-phase blocks connected to the network through transformers and connected from the rotor consistently in each phase. Transformation blocks contain single-phase active rectifiers and voltage inverters. They provide a bilateral exchange of energy between the network and the rotor. A control algorithm is developed and experimentally checked up by the single-phase active rectifiers, allowing to minimize an exchange of signals between blocks.