电测与仪表
電測與儀錶
전측여의표
ELECTRICAL MEASUREMENT & INSTRUMENTATION
2015年
9期
46-50
,共5页
风电机组%PWM整流器%双闭环控制%直流稳压%单位功率因素
風電機組%PWM整流器%雙閉環控製%直流穩壓%單位功率因素
풍전궤조%PWM정류기%쌍폐배공제%직류은압%단위공솔인소
wind turbine%PWM rectifier%double-loop control%DC stabilized voltage%unity power factor
基于双馈风力发电机组在运行的过程中，随工况的变化，功率变换器应具有能量双向流动、交-直-交变换效率高、直流环节电压稳定等要求出发，以三相PWM电压型（ VSR）整流器为基础，分析了PWM整流器的基本原理，并建立了在三相静止坐标系下的变换器数学模型，应用电压矢量定向控制技术，并采用电压电流双闭环控制模式以及SVPWM调制方法构建了功率变换器系统，通过Sim Power Systems和Simulink仿真实验，确认了所采用的控制方法可行，对直流环节电压有较好的稳定作用，可实现机网侧能量双向变换控制以及具有单位功率因数等特点。
基于雙饋風力髮電機組在運行的過程中，隨工況的變化，功率變換器應具有能量雙嚮流動、交-直-交變換效率高、直流環節電壓穩定等要求齣髮，以三相PWM電壓型（ VSR）整流器為基礎，分析瞭PWM整流器的基本原理，併建立瞭在三相靜止坐標繫下的變換器數學模型，應用電壓矢量定嚮控製技術，併採用電壓電流雙閉環控製模式以及SVPWM調製方法構建瞭功率變換器繫統，通過Sim Power Systems和Simulink倣真實驗，確認瞭所採用的控製方法可行，對直流環節電壓有較好的穩定作用，可實現機網側能量雙嚮變換控製以及具有單位功率因數等特點。
기우쌍궤풍력발전궤조재운행적과정중，수공황적변화，공솔변환기응구유능량쌍향류동、교-직-교변환효솔고、직류배절전압은정등요구출발，이삼상PWM전압형（ VSR）정류기위기출，분석료PWM정류기적기본원리，병건립료재삼상정지좌표계하적변환기수학모형，응용전압시량정향공제기술，병채용전압전류쌍폐배공제모식이급SVPWM조제방법구건료공솔변환기계통，통과Sim Power Systems화Simulink방진실험，학인료소채용적공제방법가행，대직류배절전압유교호적은정작용，가실현궤망측능량쌍향변환공제이급구유단위공솔인수등특점。
Based on double-fed wind turbine during operation , with the change in working conditions , the power con-verter should base on some requirements , such as a two-way flow of energy , AC-DC-AC conversion high efficiency , the DC stabilized voltage and so on .And the power conversion should also base on the three-phase PWM voltage type ( VSR) rectifier, analyzing the principles of PWM rectifier , establishing the inverter mathematical model in three stat-ic coordinate system , applying the voltage vector oriented control technology and the method of modulation of SVPWM to build the power converter system .By doing the simulated experiments of Sim Power Systems and Simulink , we af-firm that the control method is feasible enough and has many features , such as making DC link voltage stay in stabili-ty , making two-way conversion of energy in the motor control network side machine side come true , and possessing the unity factor .
