Topic
PWM rectifier
About: PWM rectifier is a research topic. Over the lifetime, 2254 publications have been published within this topic receiving 25614 citations.
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Papers
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28 Sep 2005TL;DR: In this article, a rectifier is coupled between positive and negative buses and a plurality of input voltage sources, each pair is associated with one of the inputs voltage sources and the controller is further operable to estimate a line inductance seen by the rectifier based on the control signals and generate an inductance compensation gain factor for applying to the control loops.
Abstract: A rectifier includes a switching circuit and a controller. The switching circuit is coupled between positive and negative buses and a plurality of input voltage sources. The switching circuit includes a plurality of pairs of switching devices. Each pair is associated with one of the input voltage sources. The controller includes first and second control loops operable to generate control signals for operating the pairs of switching devices to generate a potential across the positive and negative buses. The controller is further operable to estimate a line inductance seen by the rectifier based on at least one of the control signals and generate an inductance compensation gain factor for applying to the control loops based on the estimated line inductance.
35 citations
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23 Feb 1997TL;DR: In this article, the topology of a new three-phase three-switch three-level PWM rectifier system is derived based on the basic structure of a DC-to-DC SEPIC power converter.
Abstract: In this paper, the topology of a new three-phase three-switch three-level PWM rectifier system is derived based on the basic structure of a DC-to-DC SEPIC power converter. The system is characterized by full controllability of the power flow (independent of the level of the output voltage) and by a sinusoidal mains current shape in phase with the mains voltage. The operating principle of the power converter is explained based on the conduction states of a bridge leg within a pulse period. The stationary operating behavior is analyzed by digital simulation based on the control of the mains phase currents by independent ramp-comparison controllers. Furthermore, a mathematical description of the operating behavior of the three-phase system including the coupling of the phase current controllers (given due to the floating mains star point) is discussed. Finally, results of an experimental investigation of a laboratory model of the power converter are presented.
34 citations
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01 Nov 2004
TL;DR: In this article, simple simulation methods to calculate power semiconductor loss and instantaneous junction -case temperature difference in a power module of a matrix converter are proposed, and the validity of the proposed simulation method for loss calculation is confirmed through experiment using a 22 kW test set up of the matrix converter.
Abstract: In this paper, simple simulation methods to calculate power semiconductor loss and instantaneous junction - case temperature difference in a power module of a matrix converter are proposed. The validity of the proposed simulation method for loss calculation is confirmed through experiment using a 22 kW test set-up of the matrix converter. By using the simulation method for temperature calculating, the influence of the output frequency on the junction - case temperature difference is investigated. Moreover, the effect of using a novel IGBT (RB-IGBT) that has reverse blocking capability is discussed. It is shown that the efficiency of a matrix converter using the RB-IGBT is higher by 1.3 points than that of a conventional PWM rectifier and inverter system.
34 citations
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15 Jun 2003TL;DR: In this article, an advanced modulation scheme is proposed which does prevent the input current distortion and does allow to maintain the optimum performance of conventional modulation schemes for three-phase three-switch buck-type PWM rectifiers where the switching state of one bridge leg is clamped within a /spl Pi/3 wide interval of the mains period.
Abstract: Modulation schemes for three-phase three-switch buck-type PWM rectifiers where the switching state of one bridge leg is clamped within a /spl Pi//3-wide interval of the mains period do guarantee minimum switching losses as well as minimum input filter capacitor voltage ripple and minimum DC current ripple. However, as shown in this paper by a detailed analysis of the time behavior of the input filter capacitor voltages within a pulse period such modulation schemes are characterized by the occurrence of sliding intersections of the filter capacitor voltages which do cause input current distortion. An advanced modulation scheme is proposed which does prevent the input current distortion and does allow to maintain the optimum performance of conventional modulation schemes.
34 citations
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17 Sep 1993TL;DR: In this article, a switching rectifier circuit that combines the conventional three-phase, 6-stepped PWM rectifier/inverter circuit with a simple, low-power switch commutation circuit to provide zero-voltage turn-on for the switches, and soft turn-off for the diodes.
Abstract: A novel switching rectifier circuit that combines the conventional three-phase, 6-stepped PWM rectifier/inverter circuit with a simple, low-power switch commutation circuit to provide zero-voltage turn-on for the switches, and soft turn-off for the diodes. The main features of the new circuit include elimination of switching losses on the power switches and reverse recovery problems on the diodes, elimination of the need for any snubbers in the three-phase bridge, possibility of use of slower diodes in the power bridge, constant frequency operation, and no increase in component current and voltage stresses over the conventional PWM rectifier.
34 citations