In view of the fragmentation of the functions, forms and basic software and hardware of the existing IoT terminals, we propose an IoT intelligent sensing terminal system architecture, in which the intelligent sensing ...
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This paper researches the consensus problem of high-order multi-agent systems. A new dynamic neighbor-based protocol is proposed which contains two parts, one is the local feedback and the other is the distributed fee...
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A neural based PID feedback control method for networked process controlsystems is presented. As there are some uncertain factors such as external disturbance, randomly delayed measurements or control demands in real...
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A neural based PID feedback control method for networked process controlsystems is presented. As there are some uncertain factors such as external disturbance, randomly delayed measurements or control demands in real networked process controlsystems, the proposed PID controller is implemented by backpropagation neural networks whose weights are updated via minimizing tracking error entropy of closed loop systems. To demonstrate the potential applications of the proposed strategy, an example of a simulated batch reactor is provided. The proposed design method is shown to be useful and effective in dealing with network process controlsystems.
Virtual synchronous generator (VSG) is featured in solving problems caused by low inertia and weak damping of renewable energy-based power system. However, during active power or frequency disturbance, VSGs usually fa...
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ISBN:
(数字)9798350352658
ISBN:
(纸本)9798350352665
Virtual synchronous generator (VSG) is featured in solving problems caused by low inertia and weak damping of renewable energy-based power system. However, during active power or frequency disturbance, VSGs usually face challenges like output active power transient oscillation and frequency overshoot. This paper proposes a three-level VSG feedforward control strategy based on transient damping enhancement to solve above problems. Firstly, the closed-loop small-signal model of the active control loop for VSG grid-connected system is established, and the relationship between the moment of inertia and the damping coefficient of the traditional VSG is analysed. Then, the feedforward control strategy to enhance the transient damping is given, and the influence of the control strategy on the VSG grid-connected fluctuation is revealed based on the root trajectory of the system characteristic root. Finally, the working conditions of increasing the active command and decreasing the grid frequency are set respectively to verify the effectiveness of the proposed control strategy. The results indicate that the three-level VSG feedforward control strategy based on transient damping enhancement can effectively suppress the active power oscillation and alleviate frequency overshoot phenomenon.
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