This paper presents a new method to overcome the degraded control performance of linear induction motors (LIM) due to end effects. The method employs a parameter-self-tuning adaptive sliding mode observer (ASMO) and m...
详细信息
This paper presents a new method to overcome the degraded control performance of linear induction motors (LIM) due to end effects. The method employs a parameter-self-tuning adaptive sliding mode observer (ASMO) and model predictive current control (MPCC),which first develops a LIM mathematical model considering end effectsand then designs the MPCC to strengthen the control. To improve the accuracy of the flux observation, the method develops the ASMO and analyzes the stability of the observer. For parameter tuning, the method utilizes an improved particleswarmoptimizationalgorithm (IPSO). Overall, the experimental findings validate the effectiveness of the proposed algorithm
In recent years, virtual reality technology has been widely applied and researched in various fields. In digital architectural design and simulation, it has gradually become an important tool. For the evacuation of co...
详细信息
In recent years, virtual reality technology has been widely applied and researched in various fields. In digital architectural design and simulation, it has gradually become an important tool. For the evacuation of commercial buildings, virtual reality technology is introduced and a digital building evacuation simulation model based on panic emotions is proposed. Meanwhile, based on this model, the behavior and distribution of pedestrians are simulated, targeted evacuation design schemes are proposed, and the spatial evacuation congestion situation of each scheme is evaluated. These results confirm that in digital commercial building simulation design, the visibility loop rate of the strip path model is as high as 71.25%, which is 8.93% and 11.35% higher than that of the circular path and radiation path, respectively. Meanwhile, the reachability loop back rate of this model is as high as 76.39%. In addition, when the horizontal spacing is 2.5 m, the time for the group to complete evacuation is the shortest, only 180 seconds. And its evacuation rate reached a maximum of 0.4. When the horizontal spacing increases to 4.5 meters, the evacuation time and efficiency are close to the barrier free situation, and obstacles have little effect on reducing congestion. The adoption of the proposed method can help designers develop reasonable evacuation strategies more efficiently and safely, providing strong technical support for the field of architectural design.
A frequency control method for distributed energy storage cluster control is proposed to address the issue of poor frequency regulation performance in the power system due to the widespread integration of new energy s...
详细信息
ISBN:
(纸本)9798350378467;9798350367676
A frequency control method for distributed energy storage cluster control is proposed to address the issue of poor frequency regulation performance in the power system due to the widespread integration of new energy sources. Firstly, build a system frequency control architecture for distributed energy storage clusters, and unify the regulation of energy storage clusters through aggregation control centers. Then, design an enhanced learning algorithm controller and use the BP neural network optimized by the improved particleswarmoptimizationalgorithm to find the optimal energy storage power increment for frequency control. Finally, use the control output of the controller to achieve system frequency control. Based on the IEEE 39 node system, experimental analysis was conducted on the proposed method, and the results showed that the system frequency did not experience overshoot, and the energy storage output power did not exceed the limit of 75MW, significantly improving the frequency control capability of the new power system.
暂无评论