CAJ | 학술논문

为提高双馈感应风力发电机的控制性能,提出了一种基于反推算法的直接功率控制(BS-DPC)策略。讨论了在平衡电网条件下 BS-DPC 的基本原理,以及不平衡电网条件对 BS-DPC 的影响,并提出了针对不平衡电网条件的 BS-DPC 新的控制目标和改进控制策略。在平衡电网条件下,对双馈感应风力发电机基于传统查询开关表的直接功率控制(LUT-DPC)、矢量控制(VC)和 BS-DPC 进行了仿真和实验研究,结果证明,BS-DPC 在继承了 LUT-DPC 优异动态性能的同时,可获得恒定开关频率,并减小电流谐波和功率波动,具有良好的稳态性能；不平衡电网条件的仿真和实验研究同样证明了改进 BS-DPC 策略的正确性和有效性。
위제고쌍궤감응풍력발전궤적공제성능,제출료일충기우반추산법적직접공솔공제(BS-DPC)책략。토론료재평형전망조건하 BS-DPC 적기본원리,이급불평형전망조건대 BS-DPC 적영향,병제출료침대불평형전망조건적 BS-DPC 신적공제목표화개진공제책략。재평형전망조건하,대쌍궤감응풍력발전궤기우전통사순개관표적직접공솔공제(LUT-DPC)、시량공제(VC)화 BS-DPC 진행료방진화실험연구,결과증명,BS-DPC 재계승료 LUT-DPC 우이동태성능적동시,가획득항정개관빈솔,병감소전류해파화공솔파동,구유량호적은태성능；불평형전망조건적방진화실험연구동양증명료개진 BS-DPC 책략적정학성화유효성。
In order to improve the operating performance of doubly-fed induction wind turbines,this paper proposes a direct power control (DPC) based on backstepping algorithm (BS-DPC).Firstly,a brief introduction of backstepping control is presented and the basic principle of BS-DPC is discussed in detail,then the comparative research and analysis on simulation and experimental results of look-up table DPC(LUT-DPC),vector control(VC)and BS-DPC under balanced power grid situation are proposed.The BS-DPC not only inherits excellent dynamic performance from traditional DPC,but also has excellent steady performance and decreases harmonic current and power pulsation with constant switching frequency.Secondly,the influence of unbalanced power grid on the BS-DPC is discussed,and then new control objectives and an improved control strategy based on BS-DPC are proposed.Simulation and experimental results verify the effectiveness of improved BS-DPC under unbalanced power grid condition as well. This work is supported by National Natural Science Foundation of China(No.5 1377141)and Zhejiang Provincial Natural Science Foundation of China(No.LY13E070001).