Topic
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 published on a yearly basis
Papers
More filters
TL;DR: An ac-dc rectifier, which draws sinusoidal current waveforms from the utility, can supply either a ripple-free current or voltage to the dc load by using a dc filter as discussed by the authors.
Abstract: This paper describes an ac-dc rectifier, which draws sinusoidal current waveforms from the utility. Also, it can supply either a ripple-free current or voltage to the dc load by using a dc filter. The technology involves an accurate shaping of the dc current by using two forced-commutated switches (IGBTs). The shaping of the dc current is reflected back into the shaping of the input currents, which become pure sine waves. The resulting system is reliable and able to handle rapid load variations with a simple and robust control system. It also operates under rectification and inversion. Detailed analysis and a complete set of experimental results from a 380-V 20-kVA rectifier system are provided.
58 citations
Patent•
02 Sep 1983TL;DR: In this article, a two-terminal rectifier circuit, useful for converting an input a.c. voltage into an output d.c., is formed by a power MOSFET which is provided with an electrical feedback comparator network designed to turn on the MOS FET once during each a.C. cycle.
Abstract: A two-terminal rectifier circuit, useful for converting an input a.c. voltage into an output d.c. voltage, is formed by a power MOSFET which is provided with an electrical feedback comparator network designed to turn on the MOSFET once during each a.c. cycle when the input a.c. voltage is nearly equal to its peak positive value.
57 citations
25 Oct 1992
TL;DR: A novel, threshold-free circuit has been designed that combines both the moving average and peak detection functions and provides a timing signal with an uncertainty of one sampling period.
Abstract: A digital pulse processor with improved differential linearity and reduced dead time has been designed. The circuit uses an 8-b flash ADC (analog-to-digital converter) running at 36 MHz and continually sampling the signal from the preamplifier or shaping amplifier. The digitized signal is then processed by a digital moving averager. A digital peak detector is used for measuring the amplitude of the shaped pulses. A novel, threshold-free circuit has been designed that combines both the moving average and peak detection functions. The circuit also provides a timing signal with an uncertainty of one sampling period. The number of the averaged samples (equivalent to the shaping time constant) is digitally controlled. The resolution of the processor is limited by the finite ADC resolution and the finite sampling frequency. Increasing the sampling frequency should improve the resolution in pulse height analysis and the timing precision. >
57 citations
TL;DR: A novel method is outlined to profile the rectifier output current to be triangular which results in low ac-side harmonics and lower VA rating of the dc filter, simple integration of dc energy storage, and effective ac harmonic control even when the initial rectifier current is discontinuous.
Abstract: The 12-pulse rectifier is often used to supply high-power industrial loads. Its ability to effectively and cheaply mitigate the harmonics on the ac side has ensured its dominance in the industry even as active front ends become cheaper and more reliable. Despite its many benefits, the 12-pulse rectifier is not able to reduce the ac-side harmonics to a level acceptable by the pertinent IEEE standards without additional filtering. In this paper, we outline a novel method to profile the rectifier output current to be triangular which results in low ac-side harmonics. The novelty in the proposed approach is that we exploit the dc-side filter design to minimize the volt-amperes (VA) rating of the current source used to profile the dc-side rectifier current. Additional benefits of the proposed method include lower VA rating of the dc filter, simple integration of dc energy storage, and effective ac harmonic control even when the initial rectifier current is discontinuous.
57 citations
TL;DR: In this paper, a class-E resonant low dv/dt rectifier is analyzed and experimentally tested for high-frequency applications such as resonant DC-to-DC converters.
Abstract: A class-E resonant low dv/dt rectifier is analyzed and experimentally tested. All major parasitic reactive components are included in the rectifier topology. The diode capacitance and the leakage inductance of the isolation transformer and lead inductances are absorbed into the resonant inductance. Therefore, the rectifier is suitable for high-frequency applications such as resonant DC-to-DC converters. The rectifier is driven by a sinusoidal voltage source. Equations governing the circuit operation are derived using Fourier techniques. Experimental results are obtained at 1 MHz and an output voltage of 5 V. The design equations show good agreement with the measured circuit performance. >
57 citations