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双馈风力发电系统故障穿越性能改善的控制策略 被引量:6
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作者 高仕红 《可再生能源》 CAS 北大核心 2016年第6期828-836,共9页
PI控制策略限制了双馈风力发电系统的故障穿越能力。文章提出一种基于多开关控制的故障穿越策略,在机端电压跌落瞬态期间利用多态滞环电流矢量控制器快速的瞬态性能抑制转子绕组的过电流,同时实施转子绕组串联动态电阻器,进一步抑制转... PI控制策略限制了双馈风力发电系统的故障穿越能力。文章提出一种基于多开关控制的故障穿越策略,在机端电压跌落瞬态期间利用多态滞环电流矢量控制器快速的瞬态性能抑制转子绕组的过电流,同时实施转子绕组串联动态电阻器,进一步抑制转子绕组的过电压和过电流。详细介绍了多态滞环电流矢量控制器和基于多开关控制的故障穿越策略的实施过程。针对3种典型机端电压跌落类型,在Matlab/Simu1ink平台中构建了所提出的故障穿越控制策略的动态仿真模型并验证了其可行性。仿真结果表明,所提出的故障穿越控制策略改善了双馈风力发电机系统的故障穿越性能。 展开更多
关键词 双馈风力发电系统 故障穿越策略 多开关控制 多态滞环电流矢量控制 动态电阻器
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Stability Analysis for Switching of Discrete Linear Singular Systems
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作者 GUO Xiao-li LI Wei MU Xiao-wu 《Chinese Quarterly Journal of Mathematics》 CSCD 北大核心 2006年第2期283-287,共5页
In this paper, we study the stability of discrete linear singular systems by switching controller. Using some recent results on multiple-Lyapunov function technique, we obtain two sufficient conditions of linear singu... In this paper, we study the stability of discrete linear singular systems by switching controller. Using some recent results on multiple-Lyapunov function technique, we obtain two sufficient conditions of linear singular systems. 展开更多
关键词 linear singular systems switching controller multiple-Lyapunov function
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STOCHASTIC ADAPTIVE SWITCHING CONTROL BASED ON MULTIPLE MODELS 被引量:2
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作者 ZHANGYanxia GUOLei 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2002年第1期18-34,共17页
It is well known that the transient behaviors of the traditional adaptive control may be very poor in general, and that the adaptive control designed based on switching between multiple models is an intuitively appeal... It is well known that the transient behaviors of the traditional adaptive control may be very poor in general, and that the adaptive control designed based on switching between multiple models is an intuitively appealing and practically feasible approach to improve the transient performances. In this paper, we shall prove that for a typical class of linear systems disturbed by random noises, the multiple model based least-squares(LS) adaptive switching control is stable and convergent, and has the same convergence rate as that established for the standard least-squares-based self-tunning regulators. Moreover, the mixed case combining adaptive models with fixed models is also considered. 展开更多
关键词 Multiple model switching control LEAST-SQUARES adaptive control convergence rate.
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A nonlinear optical loop mirror-based linear cavity switchable multi-wavelength erbium-doped fiber laser
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作者 黄奔 蒙红云 +5 位作者 王惠壕 王庆豪 张星 余伟 谭春华 黄旭光 《Optoelectronics Letters》 EI 2015年第4期256-259,共4页
A nonlinear optical loop mirror(NOLM)-based linear cavity switchable multi-wavelength erbium-doped fiber(EDF) laser is proposed and experimentally demonstrated.Due to the characteristics of the intensity-dependent tra... A nonlinear optical loop mirror(NOLM)-based linear cavity switchable multi-wavelength erbium-doped fiber(EDF) laser is proposed and experimentally demonstrated.Due to the characteristics of the intensity-dependent transmissivity,the NOLM can effectively mitigate the mode competition of the homogenous broadening gain medium,so that the multi-wavelength lasing can be achieved at room temperature.By adjusting the states of the polarization controllers(PCs),the number of the lasing wavelengths in the proposed laser can be adjusted flexibly from 11 to 13 with a wavelength spacing of 0.4 nm around the wavelength of 1 530 nm. 展开更多
关键词 mirror lasing spacing competition adjusting adjusted fluctuation coupler Tianjin homogenous
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