The Design of Direct-Drive Wind Generation Grid Side PWM Converter Based on LCL Filter

2014 ◽  
Vol 472 ◽  
pp. 265-270
Author(s):  
Lei Sun ◽  
Yu Ning Wang ◽  
Chen Gu ◽  
Yi Man Liu
Keyword(s):  
Wind Generation ◽  
Direct Drive ◽  
Pwm Rectifier ◽  
Lcl Filter ◽  
Loop Control ◽  
Active Rectifier ◽  
Static Performance ◽  
Doubly Fed ◽  
Grid Side ◽  
Grid Side Converter

This paper gives systematically study on grid-side converter with LCL filter for doubly-fed induction generator in wind power. This paper adopts the parameters of the PI-based controller that is already used for the L-filter-based active rectifier. On the basis of model in the dq coordinate system, the paper proposes a double-closed-loop control strategy. Then the simulation model of PWM rectifier is established in the MATLAB/SIMULINK environment. According to the articles theory imitation of the real system design with good dynamic and static performance.

scholarly journals Simulation of reactive power regulation of DFIG

2021 ◽  
Vol 233 ◽  
pp. 01025
Author(s):  
Yingfeng Zhu ◽  
Xiaosu Xie ◽  
Dong Yang ◽  
Song Gao ◽  
Weichao Zhang ◽  
...  
Keyword(s):  
Wind Farm ◽  
Reactive Power ◽  
Control Method ◽  
Power Regulation ◽  
Working Principle ◽  
Power Limit ◽  
Doubly Fed ◽  
Grid Side ◽  
Grid Side Converter ◽  
And Control

Doubly fed induction generator (DFIG) wind power generation system is widely used in wind farm all over the world. Reactive power can be generated both in grid-side converter and generator-side converter of DFIG. In this paper, working principle and control method of DFIG are introduced, and the reactive power limit of DFIG is derived, finally reactive power regulation is simulated in Simulink.

scholarly journals Control for Three-Phase LCL-Filter PWM Rectifier with BESS-Oriented Application

Energies ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4093 ◽  
Author(s):  
Mora ◽  
Núñez ◽  
Visairo ◽  
Segundo ◽  
Camargo
Keyword(s):  
Storage System ◽  
Input Voltage ◽  
Voltage Regulation ◽  
Current Control ◽  
Loop Current ◽  
Pwm Rectifier ◽  
Lcl Filter ◽  
Loop Control ◽  
Practical Applications ◽  
Three Phase

This paper deals with a battery energy storage system (BESS) in only one of its multiple operating modes, that is when the BESS is charging the battery bank and with the focus on the control scheme design for the BESS input stage, which is a three-phase LCL-filter PWM rectifier. The rectifier's main requirements comprise output voltage regulation, power factor control, and low input current harmonic distortion, even in the presence of input voltage variations. Typically, these objectives are modeled by using a dq model with its corresponding two-loop controller architecture, including an outer voltage loop and a current internal loop. This paper outlines an alternative approach to tackle the problem by using not only an input–output map linearization controller, with the aim of a single-loop current control, but also by avoiding the dq modeling. In this case, the voltage is indirectly controlled by computing the current references based on the converter power balance. The mathematical model of the three-phase LCL-filter PWM rectifier is defined based on the delta connection of the filter, which accomplishes the requirements of a 100 kW BESS module. Extensive simulation results are included to confirm the performance of the proposed closed-loop control in practical applications.

Research on Strategy of Grid-Side PWM Converter Based on Doubly-Fed Induction Generator

2012 ◽  
Vol 538-541 ◽  
pp. 3125-3128
Author(s):  
Wei Zhang ◽  
Yi Ruan
Keyword(s):  
Mathematic Model ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Operating Characteristics ◽  
Generation System ◽  
Pwm Converter ◽  
Control Scheme ◽  
Doubly Fed ◽  
Grid Side ◽  
Grid Side Converter

A mathematic model of the grid-side PWM converter based on Doubly-Fed Induction Generator (DFIG) has been investigated to analyze their operating characteristics. The control scheme to the grid-side PWM converter was presented. And the simulation model of the grid-side converter (GSC) based on DFIG energy generation system was built in Matlab / simulink software. The results show the feasibility and correctness of the control strategy.

Research on Passivity-Based ADRC of Direct-Drive Wind Power System Back to Back PWM Converter

2013 ◽  
Vol 457-458 ◽  
pp. 1363-1370
Author(s):  
Xian Qin Ma ◽  
Jiu He Wang
Keyword(s):  
Power System ◽  
Wind Power ◽  
Hybrid Control ◽  
Direct Drive ◽  
Pwm Rectifier ◽  
Pwm Inverter ◽  
Dc Voltage ◽  
Load Disturbance ◽  
Wind Power System ◽  
Grid Side

In order to improve the performance of the converter for restrain the machine-side PWM rectifier load disturbance impact on the output DC voltage in direct-drive wind power system. A hybrid control strategy based on ADRC and the EL model was presented, using ESO to observe and compensate the load disturbances, achieving voltage outer control by ADRC method and comparing with PI control. However, as to grid-side PWM inverter, energy shaping method which based on PCHD model and the IDA-PBC control algorithm is adopted to design passivity-based controller, which is able to make the energy function have the minimum value when inverter is at the desired point, thus improving the stability and the load disturbance-rejection ability for the inverter. Simulation results show that the machine-side PWM rectifier can make the currents and voltages of AC side achieve synchronous, DC voltage can fast-track desired values; grid-side PWM inverter can achieve unity power factor and make the AC current sinusoidal.

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