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冷热两供的节能分析
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作者 韦节廷 《长春工程学院学报(自然科学版)》 2006年第4期46-47,共2页
把家用空调器和电热水器结合起来,形成一个设备,就可以利用空调器消耗的电能同时达到淋浴和夏季空调降温的目的。
关键词 空调热水器 热泵 电能利用系数 电能利用
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The Double Excitation: A Solution to Improve Energetic Performances of High Power Synchronous Machines
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作者 Aymen Ammar Frederic Gillon Pascal Brochet 《Journal of Energy and Power Engineering》 2012年第5期719-724,共6页
DFSM (doubly fed synchronous machine) presents several advantages such as efficiency improvement, weight reduction and increase of the utilization factor (kW/kg). In this paper the authors focus on impact of the D... DFSM (doubly fed synchronous machine) presents several advantages such as efficiency improvement, weight reduction and increase of the utilization factor (kW/kg). In this paper the authors focus on impact of the DFSM on the efficiency and machine weight in comparison to conventional synchronous generator with wound rotor. Different topologies of DFSM are briefly described and the different methods and models for performances prediction are presented. 展开更多
关键词 Double excitation LOSSES no load characteristic permanent magnet reluctances network vector diagram.
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