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Precision rectifier

About: Precision rectifier is a research topic. Over the lifetime, 4952 publications have been published within this topic receiving 63668 citations. The topic is also known as: super diode.


Papers
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Journal ArticleDOI
TL;DR: In this article, a rectifier topology consisting of two three-phase diode bridges and three thyristors is proposed for variable-speed high-power permanent-magnet synchronous generator (PMSG) wind energy conversion systems (WECSs).
Abstract: A novel rectifier topology consisting of two three-phase diode bridges and three thyristors is proposed in the paper for variable-speed high-power permanent-magnet synchronous generator (PMSG) wind energy conversion systems (WECSs). The proposed rectifier has several prominent features such as low cost, low power loss, and simple control. Its ability to cascade the input voltages allows it to properly regulate generator speed even when the wind velocity drops to half of the rated value. Consequently, maximum power-point-tracking algorithms can be applied to optimize power capture in a wide range of wind velocities. The operating principle of the rectifier is elaborated. Its use and control in the WECS is presented. The converter and control are verified by simulation and experimental results.

90 citations

Patent
24 Aug 1964
TL;DR: In this paper, the authors describe an A.C. switch with two pairs of contacts which are operated sequentially to apply the voltage of the source to the anode-cathode circuit of a rectifier in series with the load before applying it to the gate of the rectifier and to remove the voltage from the gate before its removal from the load circuit.
Abstract: 1,058,526. Arcing preventing in switches. SINGER CO. July 29, 1965, No. 32389/65. Heading H2B. [Also in Division G3] To prevent arcing at the contacts of a switch controlling a load, e.g. a portable electric tool, supplied from an A.C. source through the anodecathode circuit of a controlled rectifier, the switch has two pairs of contacts which are operated sequentially to apply the voltage of the source to the anode-cathode circuit of the rectifier in series with the load before applying it to the gate of the rectifier and to remove the voltage from the gate before its removal from the load circuit. The switch has an inherent delay time between the operation of the two pairs of contacts of at least one half-cycle of the A.C. supply so that the load current is always interrupted by the controlled rectifier becoming non-conducting and not by the opening of the switch contacts. Several embodiments are described including one in which the load is a motor having its speed controlled by a centrifugal switch driven by the motor and with its contacts in series with the gate of the rectifier.

89 citations

Patent
17 Sep 2004
TL;DR: In this paper, a method and apparatus for performing far-field power extraction is presented, which includes receiving an electromagnetic radiation signal, rectifying the signal to produce a direct current voltage and providing the D.C. voltage to a circuit.
Abstract: A method and apparatus for performing far-field power extraction are presented. The method includes receiving an electromagnetic radiation signal, rectifying the signal to produce a direct current (D.C.) voltage and providing the D.C. voltage to a circuit. A far-field power extraction circuit includes an antenna for receiving an electromagnetic radiation signal, a rectifier for rectifying the electromagnetic radiation signal. The circuit may further include a charge pump for amplifying the rectified voltage, an impedance matching network for coupling the antenna to the rectifier and a feedback tuning circuit for optimizing performance of the extraction circuit.

89 citations

Journal ArticleDOI
TL;DR: A new single-phase high power factor rectifier, which features regulation by conventional PWM, soft commutation and instantaneous average line current control is proposed, which uses a single converter instead of the conventional configuration composed of a four-diode front-end rectifier followed by a boost converter.
Abstract: This paper proposes a new single-phase high-power-factor rectifier, which features regulation by conventional pulsewidth modulation (PWM), soft commutation, and instantaneous average line current control. A new zero-voltage-switching PWM (ZVS-PWM) auxiliary circuit is configured in the presented ZVS-PWM rectifier to perform ZVS in the main switches and the passive switches, and zero-current switching in the auxiliary switch. Furthermore, soft commutation of the main switch is achieved without additional current stress by the presented ZVS-PWM auxiliary circuit. A significant reduction in the conduction losses is achieved, since the circulating current for the soft switching flows only through the auxiliary circuit and a minimum number of switching devices are involved in the circulating current path, and the proposed rectifier uses a single converter instead of the conventional configuration composed of a four-diode front-end rectifier followed by a boost converter. Nine transition states for describing the behavior of the ZVS-PWM rectifier in one switching period are described. A prototype rated at 1 kW, operating 80 kHz, with an input ac voltage of 220 V/sub rms/ and an output voltage of 400 V/sub dc/ has been implemented in the laboratory. An efficiency of 96.7% and power factor over 0.99 has been measured. Analysis, design, and the control circuitry are also presented in this paper.

89 citations

Proceedings ArticleDOI
27 May 2007
TL;DR: This paper presents a novel architecture for a highly efficient rectifier circuit that can be fully integrated using a standard CMOS process without special process options.
Abstract: This paper presents a novel architecture for a highly efficient rectifier circuit. The rectifier can be fully integrated using a standard CMOS process without special process options. The needed dynamic bulk regulation transistors are inherent in the first stage. A full wave rectifier with only one threshold voltage drop and an efficiency of approximately 50% is realized. In combination with a low-power active diode the proposed rectifier shows nearly no voltage drop and the efficiency rises up to 90%.

88 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202345
202299
20217
202017
201910
201833