Controllability of the simple three phase rectifier operating with unity power factor

The simple 3 transistor 18 diode system DC voltage supply operates as a three phase controlled rectifier (TPCR). The rectifier AC input current is nearly sinusoidal and its displacement angle is equal to O. As the system is symmetrical the analysis of current control is described only for an angle π/3 i.e. O<wt<π/3. The method of comparison per unit reference and available space vector current derivatives gives information about the ability to control: the sinusoidal amplitude of AC current supply displacement angle and output DC voltage as a function of AC side inductance and per unit load current. The unity power factor is a main state of the rectifier, however, leading and lagging operation is also possible. The analysis results, simulation study and laboratory tests of the TPCR rectifier system are presented