Search for dissertations about: "Small Hydropower"

Showing result 1 - 5 of 33 swedish dissertations containing the words Small Hydropower.

2. 1. Time-accurate Turbulence Modeling of Swirling Flow for Hydropower Application

   Author : Ardalan Javadi; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hybrid RANS-LES; Swirling Flow; DES; Vortex Breakdown; Turbulence Modeling; Hydropower; LES;

   Abstract : Hydraulic turbomachines have played a prominent role in the procurement of renewableenergy for more than a century. Embedded in the context of general technological progress,their design for efficiency and reliability has reached an outstanding level of quality. READ MORE

4. 2. Internal Design of a Class of Self-Excited Synchronous Generators

   Author : Mohamed Wadi; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Soft Magnetic Composites; Hydropower Plants; Brushless Excitation; Self-Excited Generators; Renewable Energy; Reluctance Generators; Synchronous Generators; Small Hydropower;

   Abstract : INTERNAL DESIGN OF A CLASS OF SELF-EXCITEDABSTRACTWith the increasing trend of distributed generation and the need for alternative and renewable energy sources, self-excited induction and synchronous reluctance generators have attracted more attention for wind, tidal and hydropower applications. This thesis is concerned with the development of a class of self-excited synchronous reluctance generators (SRG). READ MORE

5. 3. Taming exotic beauties : Swedish hydropower constructions in Tanzania in the era of development assistance, 1960s-1990s

   Author : May-Britt Öhman; Arne Kaijser; Kjell Havnevik; KTH; []
   Keywords : HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; History of science and technology; Hydropower; Electrification; Postcolonial Theory; Feminist Theory; Science and Technology Studies; Colonialism; Development assistance; Africa; Tanzania; Southern Highlands; Great Ruaha River; Vetenskapshistoria; Teknikhistori; Vattenkraftsutbyggnad – Tanzania; Kolonialism – Tanzania; Utvecklingsbistånd – Tanzania; History of technology and industry; Teknik- och industrihistoria; Historia;

   Abstract : This study analyses the history of a large hydroelectric scheme – the Great Ruaha power project in Tanzania. The objective is to establish why and how this specific scheme came about, and as part of this to identify the key actors involved in the decision-making process, including the ideological contexts within which they acted. READ MORE

6. 4. Environmental-flow assessments for current and future run-off in a large river system regulated for hydropower production

   Author : Åsa Widén; Roland Jansson; Birgitta Malm-Renöfält; Michael McClain; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Environmental flows; eco-hydrology; hydropower; river ecosystem; environmental benefits; climate change; collaboration; resource management; Ekologisk reglering; vattenkraft; produktionsoptimering; hydrologi; hydraulik; akvatiskt ekosystem; miljönytta; klimatförändringar; samverkan; vattenresurs management;

   Abstract : In 2019, Sweden implemented legislative changes to renegotiate hydropower permits to both consider environmental rehabilitation and to ensure national supply of hydropower. This means that efforts for environmental rehabilitation of the 2,000 hydropower plants in Sweden need to be considered. READ MORE

7. 5. Hydropower plants and power systems : Dynamic processes and control for stable and efficient operation

   Author : Weijia Yang; Per Norrlund; Urban Lundin; Christophe Nicolet; Uppsala universitet; []
   Keywords : ;

   Abstract : As the largest global renewable source, hydropower shoulders a large portion of the regulation duty in many power systems. New challenges are emerging from variable renewable energy (VRE) sources, the increasing scale and complexity of hydropower plants (HPPs) and power grid. READ MORE