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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Patent•
19 Nov 2014
8 citations
28 May 2013
TL;DR: This paper makes a detailed analysis on the principle and characteristics of Model Predictive Control applied to three-phase half-bridge active rectifier and the simulation results from Matlab/Simulink illustrate the flexibility and effectiveness of MPC-SVPWM approach in harmonic suppression and unity power factor.
Abstract: This paper makes a detailed analysis on the principle and characteristics of Model Predictive Control (MPC) applied to three-phase half-bridge active 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 (SVPWM). The simulation results from Matlab/Simulink illustrate the flexibility and effectiveness of MPC-SVPWM approach in harmonic suppression and unity power factor.
8 citations
Journal Article•
TL;DR: Based on simplified mathematic model of PWM rectifier with d-q rotation frame, input current is decoupled by introducing PI regulator and power network voltage as discussed by the authors, the voltage loop and current loop voltage are built.
Abstract: Based on simplified mathematic model of PWM rectifier with d-q rotation frame, input current is decoupled by introducing PI regulator and power network voltage. The voltage loop and current loop voltage are built. The close-loop transfer functions of voltage and current are gained by simplifying the different loops. PI parameters of current and voltage loops are designed. Amplitude, phase and frequency characteristic of close-loop regulator system are analyzed. The simulation results by MATLAB and the experimental curves are also given.
8 citations
TL;DR: The coupling mechanism between the DC bus voltage ripple and the grid harmonic currents is revealed and a grid harmonic current suppression method is proposed, which has the advantages in the following three aspects.
Abstract: Under the unbalanced condition of grid voltages, the second-order harmonic voltage ripple will appear on the DC bus of the three-phase PWM rectifier due to the existence of the negative sequence voltages In addition, the total harmonic distortion (THD) of the grid currents will increase correspondingly In this paper, the coupling mechanism between the DC bus voltage ripple and the grid harmonic currents is revealed Based on the situation above, a grid harmonic current suppression method is proposed Compared with existing methods, the proposed method has the advantages in the following three aspects Firstly, the proposed method does not require either the extraction of positive/negative sequence or the positive/negative sequence current control, which can highly reduce the complexity of the system Secondly, the grid current harmonics can be reduced by an improved proportional quasi resonant (IPQR) controller Thirdly, the IPQR controller has little effect on the parameter design of the control system, which facilitates the control design Finally, the experiments show the accuracy of the theoretical analysis and the effectiveness of the proposed method
8 citations
Journal Article•
TL;DR: In this paper, a sliding-mode control algorithm based on synchronous rotating reference frame was proposed for AC/DC/AC system in which three-phase voltage source PWM rectifier (VSR) is adopted as the front-end rectifier.
Abstract: AC/DC/AC system in which three-phase voltage source PWM rectifier (VSR) is adopted as the front-end rectifier can hardly obtain good dynamic performance and robustness in four-quadrant operation due to the lag of PI regulator and the sensitiveness of its proportional and integral gains to system parameters. Considering the nonlinear characteristic of VSR, a sliding-mode control algorithm based on synchronous rotating reference frame was proposed. The whole system was modeled and simulated in MATLAB/SIMULINK to obtain comparison between sliding-mode and classical PI control. The results show that the sliding-mode control possesses preferable dynamic response compared with PI regulator.
8 citations