Electrical damping of linear generators for wave energy converters A-review

被引:53
作者
Ekstrom, Rickard [1 ]
Ekergard, Boel [1 ,2 ]
Leijon, Mats [1 ,3 ]
机构
[1] Uppsala Univ, Swedish Ctr Renewable Elect Energy Convers, Dept Engn Sci, Div Elect, SE-75121 Uppsala, Sweden
[2] Seabased Ind AB, Uppsala, Sweden
[3] Univ Southampton, Southampton SO17 1BJ, Hants, England
关键词
Point-absorber; Linear generator (LG); Electrical damping circuits; THD; Power factor (PF); Efficiency; PERMANENT-MAGNET GENERATOR; POWER TAKE-OFF; CONTROL STRATEGIES; LATCHING CONTROL; CONVERSION; SYSTEMS; ABSORPTION; SIMULATION;
D O I
10.1016/j.rser.2014.10.010
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The electrical damping of point-absorber wave energy converters is crucial to optimize the power output. Many circuit topologies have been proposed, but the possible increase in power absorption must be weighed against parameters such as cost, reliability and control system complexity. In this paper, the known electrical damping circuits are categorized, described and compared. The hydrodynamic damping of the buoy is covered, and how a linear generator can be used as a power take-off unit to apply a damping force. A qualitative comparison of the circuits is presented in the end. A more complex and costly power electronics system may be viable for wave energy converters (WECs) of large-scale power rating. However, for farm operation with small-scale WECs, a simpler and passive damping may be more suitable. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:116 / 128
页数:13
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