The Warsaw rectifier is a pulse-width modulation (PWM) rectifier invented by in 1992.Koczara W., "Controlled Rectifier", Polish Patent PL 167855, Apr. 17, 1992.Koczara W., "Unity factor three phase rectifier", Power Quality ’92 Conference Europe, Münich, October 1992, 79–88, 14–15.
Features The Warsaw Rectifier provides the following features: Unity power factor Koczara W., Bialoskorki P., "Unity power factor three phase rectifiers" Power Electronics Specialists Conference, 1993. PESC '93 Record., 24th Annual IEEE at 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. This topology uses three insulated-gate field-effect transistors (IGFET) and eighteen diodes. The bidirectional switches (composed of four diodes and one IGFET circuit) are connected in a delta topology. The rectifier output does not require a divided DC-link circuit as required in the Vienna rectifier topology.D. Carlton, W.G. Dunford, M. Edmunds, “Continuous conduction mode operation of a three-phase power-factor correction circuit with quasi tri-directional switches” Power Electronics Specialists Conference, 1999. PESC 99. 30th Annual IEEE Bałkowiec T., “Three Phase Warsaw Boost Rectifier for High Power Variable Speed Power Generation” Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej, Nr 71, 2015 at http://www.imnipe.pwr.wroc.pl
See also Vienna rectifier
References