|Table of Contents|

 Design of Control System for 5MW Medium Voltage 
DirectDriven Wind Power Converter
(PDF)

《哈尔滨理工大学学报》[ISSN:1007-2683/CN:23-1404/N]

Issue:
2018年06期
Page:
70-76
Research Field:
电气与电子工程
Publishing date:

Info

Title:
 Design of Control System for 5MW Medium Voltage 
DirectDriven Wind Power Converter
Author(s):
 DENG Xiaoxiang1DAI Chaofan2
 (1.School of Electrical and Control Engineering,Heilongjiang University of Science and Technology, Harbin 150022 China; 2.Suqian Power Supply Company,State Grid Jiangsu Electric Power Co., Ltd.,Suqian 223800,China)
Keywords:
 Keywords:medium voltage three level converter vector control discontinuous pulsewidth modulation
PACS:
10.15938/j.jhust.2018.06.013
DOI:
TM614
Abstract:
 Abstract:The diode threelevel neutralpointclamped (3LNPC) converter with full power is a promising multilevel topology in the application of wind power generation system. In view of the 5MW directdrive wind power generator with permanent magnet, this paper investigated the control system, main loop parameters, stator flux estimation and discontinuous pulsewidth modulation (DPWM) of the fullpower 3LNPC converter. The gridside converter emploied the grid voltage oriented control and space voltage pulse width modulation (SVPWM) strategy, while the rotor field orientated vector control and DPWM strategy were adopted in the rotorside converter. In addition, lowpassfiltercompensationintegrator (LPFCI) based rotor flux position estimation control method is proposed. The result of thermal simulation indicates that when the switching frequency of the gridside converter is 1.55kHz, the junction temperature and temperature rise of IGBT conform with design regulation. Furthermore, the 25kw experimental prototype illustrates that based on the technique and stator flux estimation as mentioned in the paper, the harmonics content is quanlified with international standards,and the system has small rotor position estimation error, excellent steadystate performance and torque dynamic response meeting with systematic control requirements.

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Last Update: 2019-03-18