Warsaw rectifier
The Warsaw rectifier is a pulse-width modulation (PWM) rectifier invented by Włodzimierz Koczara in 1992. == Features == The Warsaw Rectifier provides the following features: Unity power factor Three-wire input, which does not require a connection to the neutral wire Ohmic behaviour Controlled output voltage Simple control scheme Low power losses Unique features of the Warsaw Rectifier: Short circuits do not cause current to flow through switches No cross-short circuiting of switches possible Dead time is not required == Topology == The Warsaw rectifier is a unidirectional, three-phase, three-switch two-level pulse-width modulation (PWM) rectifier.