Research on Inverter Side Steady Operation of Direct-Drive Permanent Magnet Synchronous Wind Power System

2014 ◽  
Vol 1070-1072 ◽  
pp. 204-208
Author(s):  
Ruo Fa Cheng ◽  
Li Hu Chen ◽  
Xin Hong Yu ◽  
Yin Ping Ma
Keyword(s):  
Power System ◽  
Permanent Magnet ◽  
Wind Power ◽  
Pulse Width Modulation ◽  
Boost Converter ◽  
Direct Drive ◽  
Control Effect ◽  
Dual Channel ◽  
Wind Power System ◽  
Dc Current

Currently, back-to-back converter is widely used in rectifier and inverter of direct-drive permanent magnet synchronous wind power system. But there are two shortages in the system, not stable of control effect and higher ripple of DC voltage. The dual-channel parallel boost converter can shunt the DC current, reduce the ripple effectively, and improve the quality of inverter side DC current. The paper uses the space vector pulse width modulation control strategy to control the inverter. Simplifying and decoupling the complex control system and control the DC bus voltage to remain stable. The simulation results confirm that dual-channel parallel boost converter have a better control effect than back to back converter, it through control the inverter to make power quality reached the grid connected requirement, verified the correctness of the design of inverter.

The Variable Speed Direct Drive Permanent Magnet Synchronous Wind Power System Used on Matrix Converter

2011 ◽  
Vol 383-390 ◽  
pp. 7569-7575
Author(s):  
Bo Yang ◽  
Guang Zeng ◽  
Yan Ru Zhong
Keyword(s):  
Wind Speed ◽  
Power System ◽  
Permanent Magnet ◽  
Wind Power ◽  
Control Strategy ◽  
Matrix Converter ◽  
Variable Speed ◽  
Direct Drive ◽  
Capture Range ◽  
Wind Power System

A voltage control strategy of the converter inverter-stage is proposed for the variable speed direct drive wind power system which consists with the two stage matrix converter (TSMC) and the permanent magnet synchronous generator (PMSG). In this control strategy, the inverter-stage voltage is controlled by the adjusted of inverter-stage modulation ratio M. For two cases, which is strong wind speed and weak wind speed, the ways that is decrease M and increase M are used and obtain the wide wind speed capture range. The resulted of simulation and experiment show that this way can make the voltage stabled. The performance of the converter implement this control strategy is still as same as the dual PWM converter and the wind power system preserve the feature of the wide wind speed capture range. So this way is effective and feasible to some extent.

scholarly journals Optimization of Computer Communication Monitoring System for Wind Turbine Speed

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Zuoshan Li
Keyword(s):  
Power Generation ◽  
Power System ◽  
Wind Turbine ◽  
Permanent Magnet ◽  
Wind Power ◽  
Monitoring System ◽  
Wind Turbines ◽  
Wind Power Generation ◽  
Direct Drive ◽  
Wind Power System

This article first studies the operating principles of wind turbines, focusing on the analysis of the structure and working principles of permanent magnet direct-drive wind turbines. According to the actual needs of the wind power system, the monitoring objects of the monitoring system are determined, and the overall monitoring plan for wind power generation is proposed to realize real-time analysis of the operating characteristics of the wind power system. At the same time, it pointed out the great significance of the wind power generation simulation experiment system and focused on the wind speed modeling. In terms of hardware research and analysis, relevant sensors, high-speed data acquisition cards, etc., were selected, and relevant signal conditioning circuits were designed, and a permanent magnet direct-drive wind power generation system simulation monitoring platform was constructed. In terms of software, LabVIEW was chosen as the design language of the monitoring system, and it pointed out the advantages of using LabVIEW in this monitoring system. Finally, the system uses the laboratory permanent magnet direct-drive wind turbine as the monitoring object. The practicality and accuracy of the system are verified through experiments such as permanent magnet motor power test, motor speed test, database system test, and remote monitoring test. The experimental results show that the monitoring system has a friendly interface and perfect functions and has important practicability and reference in the field of wind power monitoring.

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