control system
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2022 ◽  
Vol 8 ◽  
pp. 710-717
Jicheng Fang ◽  
Qingshan Xu ◽  
Yuanxing Xia ◽  
Lele Fang

2022 ◽  
Vol 167 ◽  
pp. 108552
Cheng-Yuan Chang ◽  
Chia-Tseng Chuang ◽  
Sen M. Kuo ◽  
Chia-Hao Lin

Juan Pablo Villegas Ceballos ◽  
Carlos Andres Ramos-Paja ◽  
Elkin Edilberto Henao-Bravo

This paper proposes a battery charger solution based on the Zeta DC/DC converter to provide a general interface between batteries and microgrid direct current (DC) buses. This solution enables to interface batteries and DC buses with voltage conversion ratios lower, equal, and higher than one using the same components and without redesigning the control system, thus ensuring global stability. The converter controller is designed to require only the measurement of a single inductor current, instead of both inductors currents, without reducing the system flexibility and stability. The controller stability is demonstrated using the sliding-mode theory, and a design procedure for the parameters is developed to ensure a desired bus performance. Finally, simulations and experiments validate the performance of the proposed solution under realistic operation conditions.

Nurlan Batayev ◽  
Batyrbek Suleimenov ◽  
Sagira Batayeva

<span>From the middle of XX century, natural gas is an important mineral, widely used in the energy sector. Transportation of natural gas is carried out via gas pipeline networks and compression stations. One of the key features which need to be implemented for any centrifugal gas compressor is a surge protection. This article describes the method and develops software application intended for simulation and study of surge protection system of a centrifugal compressor used in modern gas compression stations. Within the article research method, modelling environment’s block diagram, proposed algorithms and results are described. For surge cases control and prediction, Anti-surge control block implemented which based on practical experience and centrifugal compressor theory. To avoid complicated energy balancing differential equations the volumetric flow calculation algorithm proposed which is used in combination with Redlich-Kwong equation of state. Developed software’s adequacy test performed through modeling of one-stage gas compression scheme at rated speed with comparison of parameters with reference commercial software and verification of the anti-surge control system.</span>

2022 ◽  
Vol 166 ◽  
pp. 108812
Vinay Kumar ◽  
Kailash Chandra Mishra ◽  
Pooja Singh ◽  
Aditya Narayan Hati ◽  
Mohan Rao Mamdikar ◽  

2022 ◽  
Vol 189 ◽  
pp. 108598
Chen Gong ◽  
Ming Wu ◽  
Jianfeng Guo ◽  
Yin Cao ◽  
Zeqiang Zhang ◽  

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