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.

A novel buck-boost Z-source rectifier

Abstract: This paper presents a novel buck/boost Z-Source rectifier, in which an impedance network is employed to couple the rectifier main circuit to the load, thus it provides unique features that cannot be obtained in a traditional full-bridge rectifier. The Z-Source rectifier can access buck or boost function without using two-stage power conversion, so it overcomes the limitations of the traditional cascaded buck rectifier. The simulation and experiment had been presented to verify the proposed theories.

Electronically actuated electric switch

Abstract: A bi-directional silicon controlled rectifier forms an electric switch arranged to be connected in an alternating current supply circuit in series with an electric load to be controlled. The gate electrode of the silicon controlled rectifier is connected across the alternating current supply through the input of a full wave rectifier the output of which is connected across a unidirectional silicon controlled rectifier and the gate electrode of which is connected to the output of an oscillator which is controlled by the positive output pulses of a bistable multivibrator. The multivibrator is activated to each of its states by an electric trigger pulse which is generated when a person touches an electrically conductive proximity member connected to one plate of a capacitor, the other plate of which is connected through pulse shaping circuitry to the multivibrator. The output of the rectifier also supplies direct current for operation of the oscillator, multivibrator, proximity plate and shaper circuitry.

A simplified algorithm for space vector modulation of three-phase voltage source PWM rectifier

Abstract: A simplified algorithm is proposed in this paper for space-vector modulation (SVM) of three-phase voltage source PWM rectifier. The transfer function and control loop design of the rectifier are detail described. For three-phase voltage source PWM rectifier, the space-vector modulation scheme has excellent features such as increased utilized voltage, easy implementation via microprocessor etc. In this paper the duty cycles of space voltage vectors are calculated directly to track the reference voltage vector in each sector of the space vector plane. It avoids the look-up tables of sine and/or arctangent and complex calculations needed in the conventional methods. Based on experimental platform for Power Electronics "PE-PRO / VC33", the experimental results demonstrated that the proposed system also has the advantages including unity input power factor and greatly reduced input line current harmonic distortion due to nearly sinusoidal input line current attainable with controlled rectifiers.

Schottky diode rectifier for power harvesting application

Abstract: This paper presents a study of rectifier prototype and diode modelization. The rectifying circuit with single Schottky diode HSMS-2860 at 2.45 GHz is proposed for energy harvesting applications. In such applications, the input power is very low, mainly about −20 dBm. Based on an analysis of matching circuit, the rectifiers with single stub matching circuit, with radial stubs low pass filter, or with compact structure were designed by using circuit simulation and co-simulation in ADS. The output DC voltages of 36.2 mV and the conversion efficiency of 1.3% were measured over a load resistance of 10 kΩ for −20 dBm microwave incident power.

Series compensated open-winding PM generator wind generation system

Abstract: This paper presents a new wind power generation system utilizing an open-winding permanent magnet synchronous generator (PMSG). A diode rectifier is used for the major portion of power conversion process. In addition, the proposed system controls the generated power by using an auxiliary voltage source inverter located at the neutral of the generator. The VA rating of the auxiliary inverter is only a fraction of the system rated power. Compared to wind power systems utilizing a PWM rectifier or diode rectifier having a DC/DC boost converter, the converter cost can be considerably reduced. In addition, the generator underutilization issue in a conventional diode rectifier fed wind power system can also be solved.