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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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Proceedings ArticleDOI
26 Aug 2011
TL;DR: In this paper, a decoupling control strategy for three-level NPC PWM rectifier without line voltage sensors, combining virtual flux oriented control (VOFC) with traditional direct current control based on the decoupled d-q frame is presented.
Abstract: This paper presents a novel decoupling control strategy for three-level NPC PWM rectifier without line voltage sensors, combining virtual flux oriented control (VOFC) with traditional direct current control based on the decoupled d-q frame. A virtual flux linkage vector can be constructed similarly to the observation of AC motor flux linkage, which may serve as the oriented vector in the vector control of the PWM rectifier instead of the line voltage vector. As a result, the AC voltage sensors and phase locked circuit will be eliminated and the costs of PWM rectifier can be reduced. According to the design principle of AC motor flux observer, a modified virtual grid flux observer and the grid voltage estimation method are proposed, which solves the DC drift problem caused by a wrong initial value selecting of integer in virtual flux oriented vector control for PWM rectifier. Finally based on Matlab/Simulink, this paper constructs virtual flux oriented current decoupling control simulation model of three-level PWM rectifier without grid voltage sensor. The reliability of the observer has been proved. The good dynamic and static performances of the control scheme have been showed by simulation.

5 citations

Dissertation
01 Jan 2012
TL;DR: In this paper, the MPC controller computes the optimal space vector of input voltage to the PWM rectifier in the dq frame and then this desired space vector is modulated via space vector pulse width modulation.
Abstract: This work makes a detailed analysis on the principles and characteristics of Direct Power Control (DPC) and Model Predictive Control (MPC) applied to three-phase half-bridge PWM Rectifier. Model predictive control has merits of forecast and real-time optimization. MPC controller computes the optimal space vector of input voltage to the PWM rectifier in the dq frame and then this desired space vector is modulated via space vector pulse width modulation. The simulation results from Matlab/Simulink illustrate the flexibility and effectiveness of MPC-SVPWM approach.

5 citations

Proceedings ArticleDOI
30 May 2010
TL;DR: In this paper, a control strategy of positive and negative sequence controllers for three phase voltage source PWM rectifier based on power-equation principle is proposed aim at eliminating the harmonic of dc output voltage.
Abstract: A control strategy of positive and negative sequence controllers for three phase voltage source PWM rectifier based on power-equation principle is proposed aim at eliminating the harmonic of dc output voltage. The strategy calculates the commands of positive and negative sequence currents using the equation principle of instantaneous power, and designs positive and negative sequence controllers to regulate the positive and negative sequence currents separately. By decoupling feed-forward and PI controller, this strategy can achieve good performance. The details of the strategy are given then. The phase of the unbalanced voltage is locked using phase locked loop (PLL). The positive and negative sequence currents are separated and picked up using notch filters, and controlled by decoupling feed-forward and PI controller. The results of the simulation verify the correctness of the proposed control strategy.

5 citations

Proceedings ArticleDOI
01 Jul 2017
TL;DR: The main controlled factor can be obtained through the analysis of the principle of PWM rectifier circuit, and the target control and the simulation results show that the theoretical research and design method are reasonable and feasible.
Abstract: In both the traditional diode uncontrollable rectifier circuit and thyristor phased rectifier circuit, the shortcomings of low power factor are difficult to overcome. PWM rectifier circuit is to use full control power switch devices and adopts PWM control mode of rectifier circuit, through the adoption of appropriate control strategies and PWM modulation technology, PWM rectifier circuit can realize real-time tracking ac voltage ac current to obtain higher power factor rectifier. Firstly, the basic principle of PWM rectifier circuit is analyzed in this paper. The main controlled factor can be obtained through the analysis of the principle of PWM rectifier circuit, and the target control. At the same time, to design circuit and control strategy by using Simulink in MATLAB software simulation. The simulation results show that the theoretical research and design method in this paper are reasonable and feasible.

5 citations

Wei Jiang1
01 Jan 2012
TL;DR: In this article, the rectification mode of the AC-DC interface (PWM rectifier) is studied; sliding mode control is used in PWM rectifiers controller design; different sliding surface coordinate functions are evaluated for slidingmode control in detail based on a derived large signal converter model; finally the slidingmode controller in conjunction with a traditional PI controller are designed for current loop and voltage loop respectively.
Abstract: DC micro-grid is a novel ideal of advanced electricity delivery infrastructure which actively integrates a variety of renewable sources, energy storages, and loads within a local network; this type of lumped system organization can offer a fast, high quality and survivable solution for future residential and industrial power network. DC micro-grids can be the building block of future smart-grid, which performs proper power management for the sources, storages and customers within, and interact with the smart-grid in an optimal manner. AC-DC converter as the only grid-end interface to the utility grid can achieve bi- directional power processing with high power factor and low harmonics, which ensures sustainable and economical operation of the DC micro-grid. In this paper, the rectification mode of the AC-DC interface (PWM rectifier) is studied; sliding mode control is used in PWM rectifier controller design; different sliding surface coordinate functions are evaluated for sliding-mode control in detail based on a derived large signal converter model; finally the sliding-mode controller in conjunction with a traditional PI controller are designed for current loop and voltage loop respectively. The proposed control system is implemented in a TMS320F2812 digital signal controller and tested with a five-port interface to DC micro-grid, satisfactory results are collected.

4 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202326
202267
202145
202095
2019133
2018112