Laboratory of Energy Engineering and Computer Engineering, IBN Khaldoun University, Tiaret, Algeria.
School of Engineering and Technology, University of Hertfordshire, Hatfield, UK.
ISA Trans. 2019 Nov;94:187-199. doi: 10.1016/j.isatra.2019.04.024. Epub 2019 Apr 29.
The paper focuses on the design of position and speed observers for the rotor of a non-salient pole permanent magnet synchronous generator (NSPPMSG) coupled to a wind turbine. With the random nature of wind speed this observer is required to provide a position and speed estimates over a wide speed range. The proposed hybrid structure combines two observers and a switching algorithm to select the appropriate observer based on a modified weighting coefficients method. The first observer is a higher-order sliding mode observer (HOSMO) based on modified super twisting algorithm (STA) with correction term and operates in the medium and nominal wind speed ranges. The second observer is used in the low speed range and is based on the rotor flux estimation and the control by injecting a direct reference current different to zero. The stability of each observer has been successfully assessed using an appropriate Lyapunov function. The simulation results obtained show the effectiveness and performance of the proposed observer and control scheme.
本文专注于设计与风力涡轮机耦合的无凸极永磁同步发电机（NSPPMSG）转子的位置和速度观测器。由于风速的随机性，该观测器需要在较宽的速度范围内提供位置和速度估计。所提出的混合结构结合了两个观测器和一个切换算法，根据改进的加权系数方法选择合适的观测器。第一个观测器是基于修正超螺旋算法（STA）的高阶滑模观测器（HOSMO），具有修正项，在中速和额定风速范围内运行。第二个观测器用于低速范围，基于转子磁链估计，并通过注入不同于零的直流参考电流进行控制。使用适当的李雅普诺夫函数成功评估了每个观测器的稳定性。所获得的仿真结果表明了所提出的观测器和控制方案的有效性和性能。
