PDF Publication Title:
Text from PDF Page: 006
VI Pitch Induction generator Grid cost and the performance to the grid. Table I shows a technical comparison of the presented wind turbine systems, where issues on grid control, cost, maintenance, internal turbine performance are given. By introducing power electronics many of the wind turbine systems get a performance like a power plant. In respect to control performance they are faster but of course the produced real power depends on the available wind. The reactive power can in some solutions be delivered without having any wind producing active power. Fig. 9 is also indicating other important issues for wind turbines in order to act as a real power source for the grid. They are able to be active when a fault appears at the grid and where it is necessary to build the grid voltage up again; having the possibility to lower the power production even though more power is available in the wind and thereby act as a rolling capacity for the power system. Finally, some systems are able to work in island operation in the case of a grid collapse. The market share in 2001 (Globally and in Germany) between the dominant system topologies is shown Table II. TABLE II. WIND TURBINE TOPOLOGIES MARKET IN 2002. (Source: [4]) Gear- box AC DC AC Qref DC (a) (b) DC (c) AC DC Pref Pref VIII AC Synchronous Generator Multi-pole Pitch AC DC DC AC Pref Qref DC AC Qref Grid Grid IX Pitch Turbine Concept Fixed speed (Stall or active stall, gearbox), System I, II, III World-Market Share 28% PM-synchronous Generator Multi-pole (d) Fig. 9. Wind turbine systems with full-scale power converters. a) Induction generator with gear (System VI) b) Synchronous generator with gear (System VII) Dynamic slip control (Limited variable speed, pitch, gearbox), 5% System IV Doubly-fed generator (Variable speed operation, pitch control, gearbox), System V 47% Direct-driven (variable speed operation, pitch control), System 20% VIII 100% TOTAL As it can be seen the most sold technology in 2001 is the doubly-fed induction generator system which occupies about 50% of the whole market. More than 75% of all sold wind turbines in 2001 are controlled by power electronics. That is even more in 2003. VI. CONTROL OF WIND TURBINES Controlling a wind turbine involves both fast and slow control. Overall the power has to be controlled by means of the aerodynamic system and has to react based on a set-point given by dispatched center or locally with the goal to maximize the production based on the available wind power. c) d) Multi-pole permanent magnet synchronous generator (System IX) Multi-pole synchronous generator (System VIII) The solutions shown in Fig. 9a and Fig. 9b are characterized by having a gear. A synchronous generator solution shown in Fig. 9b needs a small power converter for field excitation. Multi-pole systems with the synchronous generator without a gear are shown in Fig. 9c and Fig. 9d. The last solution is using permanent magnets, which are still becoming cheaper and thereby more attractive. All four solutions have the same controllable characteristics since the generator is decoupled from the grid by a dc-link. The power converter to the grid enables the system to control active and reactive power very fast. However, the negative side is a more complex system with more sensitive electronic parts. Comparing the different wind turbine systems in respect to performance shows a contradiction betweenPDF Image | Power Electronics in Wind Turbine Systems
PDF Search Title:
Power Electronics in Wind Turbine SystemsOriginal File Name Searched:
Blaabjerg04078034.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |