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Application of Coordinated SOFC and SMES Robust Control for Stabilizing Tie-Line Power
School of Electrical Engineering, Southeast University, Nanjing 210096, China
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Received: 10 January 2013; in revised form: 22 February 2013 / Accepted: 27 February 2013 / Published: 3 April 2013
Abstract: Wind power causes fluctuations in power systems and introduces issues concerning system stability and power quality because of the lack of controllability of its discontinuous and intermittent resources. This paper presents a coordinated control strategy for solid oxide fuel cells (SOFCs) and superconducting magnetic energy storage (SMES) to match the intermittent wind power generation and compensate for the rapid load changes. An optimal H∞ control method, where the weighting function selection is expressed as an optimization problem, is proposed to mitigate tie-line power fluctuations and the mixed-sensitivity approach is used to deal with the interference suppression. Simulation results show that the proposed method significantly improves the smoothing effect of wind power fluctuations. Compared with the conventional control method, the proposed method has better anti-interference performance in various operating situations.
Keywords: H∞ optimal control; microgrid; solid oxide fuel cell; superconducting magnetic energy storage; mixed-sensitivity problem; particle swarm optimization (PSO)
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MDPI and ACS Style
Zhang, N.; Gu, W.; Yu, H.; Liu, W. Application of Coordinated SOFC and SMES Robust Control for Stabilizing Tie-Line Power. Energies 2013, 6, 1902-1917.
Zhang N, Gu W, Yu H, Liu W. Application of Coordinated SOFC and SMES Robust Control for Stabilizing Tie-Line Power. Energies. 2013; 6(4):1902-1917.
Zhang, Ning; Gu, Wei; Yu, Haojun; Liu, Wei. 2013. "Application of Coordinated SOFC and SMES Robust Control for Stabilizing Tie-Line Power." Energies 6, no. 4: 1902-1917.