Grid-Connected Topology of PMSG Wind Power System Based on VSC-HVDC
As the wind power generation technique is improved greatly,permanent magnet synchronous generator (PMSG) is paid more and more attention because of its multiple advantages.Nevertheless,conventional directly-drive PMSG wind generation system is connected to the grid by AC transmission.This paper introduces the DC connection structure of wind farm based on PMSG.According to VSC-HVDC (Voltage Source Converter based HVDC) transmission,the topology of series-parallel DC generation units is proposed.Regarding to the control strategy of the power generation and transmission system mentioned above,the DC voltage is controlled on generator-side for achieving the purpose of seriesparallel,and on grid-side active and reactive power decoupling method is applied to track maximum wind power by controlling the d-axis and q-axis current of the grid.The models of singlegenerator,series connection and parallel connection system are established on the PSCAD/EMTDC platform.Simulation results prove the validity of the topology scheme and the corresponding control strategy.
PMSG:VSC-HVDC:wind farm:series parallel connection:topology
Kun Zhao Gengyin Li Bozhong Wang Ming Zhou
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China
国际会议
威海
英文
297-302
2011-07-06（万方平台首次上网日期，不代表论文的发表时间）