电力系统自动化
電力繫統自動化
전력계통자동화
AUTOMATION OF ELECTRIC POWER SYSTEMS
2014年
16期
115-120,126
,共7页
永磁同步电机%磁链观测器%电磁转矩控制%风力发电%转矩闭环
永磁同步電機%磁鏈觀測器%電磁轉矩控製%風力髮電%轉矩閉環
영자동보전궤%자련관측기%전자전구공제%풍력발전%전구폐배
permanent magnet synchronous motor (PMSM)%flux observer%electromagnetic torque control%wind power generation%torque closed-loop
在风力发电系统中，风力发电机需要根据主控系统的转矩指令进行精确的转矩控制。传统的控制方法直接根据转矩指令计算对应的电流指令，并进行电流闭环控制。然而，根据转矩指令计算电流指令时，由于电机参数的影响，导致转矩控制精度降低。因此，文中基于全阶滑模观测器，提出了一种永磁同步电机定子磁链和电磁转矩观测器。与传统的电压模型磁链观测器相比，所提磁链观测器克服了积分初始值和积分漂移的问题。与传统电流模型磁链观测器相比，所提磁链观测器克服了电机电感参数和永磁体磁链参数的影响。基于观测得到的定子磁链，可实现电磁转矩的精确观测。通过设计转矩闭环控制，大大提高了转矩控制精度。仿真和实验结果验证了该方法的有效性。
在風力髮電繫統中，風力髮電機需要根據主控繫統的轉矩指令進行精確的轉矩控製。傳統的控製方法直接根據轉矩指令計算對應的電流指令，併進行電流閉環控製。然而，根據轉矩指令計算電流指令時，由于電機參數的影響，導緻轉矩控製精度降低。因此，文中基于全階滑模觀測器，提齣瞭一種永磁同步電機定子磁鏈和電磁轉矩觀測器。與傳統的電壓模型磁鏈觀測器相比，所提磁鏈觀測器剋服瞭積分初始值和積分漂移的問題。與傳統電流模型磁鏈觀測器相比，所提磁鏈觀測器剋服瞭電機電感參數和永磁體磁鏈參數的影響。基于觀測得到的定子磁鏈，可實現電磁轉矩的精確觀測。通過設計轉矩閉環控製，大大提高瞭轉矩控製精度。倣真和實驗結果驗證瞭該方法的有效性。
재풍력발전계통중，풍력발전궤수요근거주공계통적전구지령진행정학적전구공제。전통적공제방법직접근거전구지령계산대응적전류지령，병진행전류폐배공제。연이，근거전구지령계산전류지령시，유우전궤삼수적영향，도치전구공제정도강저。인차，문중기우전계활모관측기，제출료일충영자동보전궤정자자련화전자전구관측기。여전통적전압모형자련관측기상비，소제자련관측기극복료적분초시치화적분표이적문제。여전통전류모형자련관측기상비，소제자련관측기극복료전궤전감삼수화영자체자련삼수적영향。기우관측득도적정자자련，가실현전자전구적정학관측。통과설계전구폐배공제，대대제고료전구공제정도。방진화실험결과험증료해방법적유효성。
In the wind power generation system,wind power generators need to accurately control the torque according to the torque command from the master control system.In the traditional control system,the current command is directly calculated according to the torque command and then it is controlled by the current closed-loop.However,because of the influence of the parameters,the torque control accuracy is lowered as a result.For this reason,this paper proposes a stator flux and electromagnetic torque observer for the permanent magnet synchronous motor (PMSM) based on a full order sliding mode observer.Compared with the traditional voltage model based flux observer,the proposed observer has overcome the problems of integral initial value and integral drift.Compared with the traditional current model based flux observer,the proposed observer is independent of the parameters of the inductance and permanent magnet flux linkage.Based on the observed stator flux,the electromagnetic torque can be accurately observed.In addition,the torque control accuracy can be greatly improved by the torque closed-loop.Simulation and experimental results have verified the effectiveness of the proposed algorithm. This work is supported by National Natural Science Foundation of China(No.5 1377040).
