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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.


Papers
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Proceedings ArticleDOI
26 Mar 2012
TL;DR: In this article, the authors describe the modeling and control of a variable speed wind turbine system for medium power based Permanent Magnet Synchronous Generator (PMSG) which feeds an AC power grid.
Abstract: This paper describes the modeling and control of a variable speed wind turbine system for medium power based Permanent Magnet Synchronous Generator (PMSG) which feeds an AC power grid. For that, two Pulse Width Modulated (PWM) voltage converters are connected back to back between the stator terminals of the PMSG and the utility grid via a common DC link, a mathematical modeling of the wind energy conversion system is developed, a distributed generation based on standalone wind energy conversion system (WECS) using a variable speed PMSG is proposed with the Hysteresis Band Current Control (HBCC), Voltage oriented control (VOC) and Flux Oriented Control (FOC). The goal in controlling system is to ameliorate the generated energy quality by regulating DC-link voltage U dc to follow reference value Udc ref . The validity of the developed unified model and the feasibility of the proposed control strategies are all confirmed by the simulated results using SIMULINK/MATLAB software programmes.

16 citations

Patent
Hui Sun, Peng Yu, Yongzheng Sui, Lei Guo, Fushou Sun 
19 Jan 2011
TL;DR: In this paper, the authors proposed an electric energy quality regulating system based on energy storing of a super capacitor, which is characterized by comprising a three-phase voltage type PWM rectifier 3, a bidirectional DC/DC converter 4 and the super capacitor 5.
Abstract: The invention relates to an electric energy quality regulating system based on energy storing of a super capacitor, which belongs to the field of electric energy quality regulation technology and is characterized by comprising a three-phase voltage type PWM (Pulse Width Modulation) rectifier 3, a bidirectional DC/DC converter 4 and the super capacitor 5; the system is connected with a power network system 1 in parallel; during normal operation, the three-phase voltage type PWM rectifier 3 is used for stabilizing DC voltage and simultaneously realizing reactive harmonic compensation; the bidirectional DC/DC converter 4 is used for controlling the charging of the super capacitor 5; when the power network system 1 has short-circuit fault, the super capacitor 5 is used for controlling the output of stable DC voltage by the bidirectional DC/DC converter 4; and the three-phase voltage type PWM rectifier 3 is used for sending out reactive power to support the voltage of the power network system 1 and improve the voltage quality. The regulating system has the capabilities of reactive harmonic compensation and low-voltage crossing and reduces equipment redundancy. The super capacitor 5 has longer service life, thereby reducing the operating cost. The system can charge the super capacitor 5, thereby saving extra charging devices.

16 citations

Patent
03 Apr 2013
TL;DR: In this article, an electric vehicle charging system with high power quality is presented, where an inverter link is added to the charging system, so that the electric vehicle can be connected with a battery pack to charge the battery pack or with an air conditioning load for electric discharge according to load change conditions.
Abstract: The invention discloses an electric vehicle charging system with high power quality. A direct-current charger of the electric vehicle charging system is an electric vehicle charger on the basis of a voltage type PWM (pulse width modulation) rectifier, and a control system of the PWM rectifier is of a double-closed-loop control structure with a traditional outer PI (proportion integration) regulating voltage loop and an inner dead-beat control current loop. Harmonic current which is injected into a power grid by the electric vehicle charging system is reduced, and the power quality of the power grid is improved. Besides, an inverter link is added to the electric vehicle charging system, so that the electric vehicle charging system can be connected with a battery pack to charge the battery pack or can be connected with an air conditioning load for electric discharge according to load change conditions (namely a peak period, a valley period and the like) of the power grid, energy can flow in positive and negative directions, the electric vehicle charging system can run in a rectification state to receive the energy from a power-grid side, can also run in an inversion state to transmit the energy to the load, and runs in an approximate unity power factor state, and the utilization efficiency of power resources is improved.

16 citations

Journal ArticleDOI
TL;DR: The new switching schedule improves the quality of line current and results in better dynamic performances as compared with the conventional switching table (ST-DPC) while the predictive direct power control (PDPC) of three-phase boost rectifier is presented.
Abstract: The switching table based direct power control (ST-DPC) of three-phase PWM rectifier is analysed in this paper. The approach for constructing switching tables used in DPC is presented and an improved switching table (IST-DPC) is proposed. The new switching schedule improves the quality of line current and results in better dynamic performances as compared with the conventional switching table (ST-DPC). In addition, the predictive direct power control (PDPC) of three-phase boost rectifier is presented, and simulation results (in MATLAB/SIMULINK environment) are compared with those generated by ST-DPC and IST-DPC approaches. Advantages and limitations of each control scheme are highlighted and conclusions regarding applications, quality of current waveforms and burden of calculations are presented.

16 citations

Journal ArticleDOI
TL;DR: PWM rectifier with PD-T2FNN DC-link voltage controller has superior performance for all operating conditions according to performance criteria when compared with other controllers.
Abstract: Diode and thyristor-based rectifier circuits have been widely used in the industry. Due to non-linear structures of these circuits, they draw non-sinusoidal current from AC network as well as cause a low power factor in the AC side. The DC-link voltage of rectifier is affected by the changes in AC network or by the load variations on the DC side. Pulse-width modulated (PWM) rectifiers can eliminate the mentioned power quality problems if they control properly. This study proposes a controller with an adaptive and robust structure based on proportional + derivative type-2 fuzzy neural network (PD-T2FNN) for DC-link voltage control of PWM rectifier. Dynamic performance of PWM rectifier using the proposed controller is evaluated via dSPACE based experimental setup under different operation conditions: set-point change, step load change in the DC side of the rectifier, set-point change under load and capacitive operation mode. The experimental results are given for traditional PD and proportional + integral and T2FNN controllers to validity performance of the proposed controller. Performances of controllers are evaluated regarding settling time, overshoot, steady-state error and total harmonic distortion. PWM rectifier with PD-T2FNN DC-link voltage controller has superior performance for all operating conditions according to performance criteria when compared with other controllers.

16 citations


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