The
Warsaw rectifier is a
PWM rectifierinvented 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 [1]]
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Three-wire input, which does not require a connection to the neutral wire
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Ohmic contact behaviour
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Controlled output voltage
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Simple control scheme
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Low power losses
Unique features of the Warsaw Rectifier:
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Short circuits do not cause current to flow through switches
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No cross-short circuiting of switches possible
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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
Transistor (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 [2]][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
