Warsaw rectifier

The Warsaw rectifier is a pulse-width modulation (PWM) rectifier, invented by Włodzimierz Koczara [pl] in 1992.

[1][2] The Warsaw Rectifier provides following features: Unique features of the Warsaw Rectifier: Warsaw Rectifier is a unidirectional, three-phase, three-switch two-level pulse-width modulation (PWM) rectifier.

This topology uses three insulated-gate field effect transistors (IGFET) and eighteen diodes.

The bidirectional switches (made as four diodes and one IGFET circuit) are connected in a delta topology.

The rectifier output does not require a divided DC-link circuit as in the Vienna Rectifier topology.

Fig. 1: Schematic of Warsaw Rectifier topology
Fig. 2: Patent PL167855 scan