Fuel cell hybrid schemes for renewable flex power generation

全球对化石燃料成本不确定、能源安全和环境可持续性的担忧，将“绿色”替代能源带入了能源部门的前沿。加拿大承诺到2020年将温室气体排放量减少20%，这要求在配电系统中迅速纳入可再生能源。分布式和间歇性可再生能源，包括光伏阵列、风力涡轮机、燃料电池和海洋潮汐发电机，需要能量转换和存储技术，将未调节的原始电力转化为向独立交流负载供电和不间断向电网注入电力所需的优质电力。与成功整合可再生能源相关的主要技术挑战是间歇性、稳定性、潮流控制、电能质量、利用率和效率。当两个或多个电源组合在一个混合系统中以减轻间歇影响和提高稳定性时，它们之间的相互作用会带来进一步的技术挑战，因此需要可靠的协调运行。

Global concerns relating to the uncertain cost of fossil fuels, energy security, and environmental sustainability have brought "green" alternatives to the forefront of the energy sector. Canada's commitment to reduce green house emission by 20% by 2020 requires fast incorporation of renewable power in the electricity distribution system. Distributed and intermittent renewable energy sources including photovoltaic arrays, wind turbines, fuel cells, and ocean tidal generators require energy conversion and storage technologies to transform raw unregulated power into quality power needed to supply stand-alone AC loads and inject power into the grid uninterruptedly. The main technical challenges associated with successful integration of renewable power are intermittency, stability, power flow control, power quality, utilization, and efficiency. When two or more power sources are combined in a hybrid system to mitigate intermittency effects and improve stability, further technical challenges arise from their interactions, resulting in the need for reliable coordinated operation.