By Leonard Lee Grigsby

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2006 by Taylor & Francis Group, LLC. If the system is a 12 V DC system, a set of deep discharge batteries will need to have a capacity of 185 Ah for each day of battery back-up (day of autonomy). For 3 d of autonomy, a total of 555 Ah of storage will be needed, which equates to eight batteries rated at 70 Ah each. 4 Hybrid PV-Powered Single Family Dwelling In areas where winter sunlight is significantly less than summer sunlight, and=or where winter electrical loads are higher than summer electrical loads, if sufficient PV is deployed to meet winter needs, then the system produces excess power for many months of the year.

E. , CIS-Based Thin Film PV Technology, Phase 2 Technical Report, October 1996—October 1997, NREL, Golden, CO, May 1998. , Proc. 14th NREL PV Program Review, AIP Conf. Proceedings 394, Lakewood, CO, 1996, 83–105. , 1997. , Proc. 26th IEEE PV Spec. , 301–305, 1997. , Proc. , 563–568, 1997. , Harnessing Solar Power, Plenum Press, New York, 1990. ß 2006 by Taylor & Francis Group, LLC. II Electric Power Generation: Conventional Methods Rama Ramakumar Oklahoma State University 4 Hydroelectric Power Generation Steven R.

Induction generators are used in small hydroelectric applications (less than 5 MVA) due to their lower cost which results from elimination of the exciter, voltage regulator, and synchronizer associated with synchronous generators. The induction generator draws its excitation current from the electrical system and thus cannot be used in an isolated power system. The majority of hydroelectric installations utilize salient pole synchronous generators. Salient pole machines are used because the hydraulic turbine operates at low speeds, requiring a relatively large number of field poles to produce the rated frequency.

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