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Permanent magnet wind turbine generator

   

Added on  2021-04-21

30 Pages6367 Words78 Views
1PERMANENT MAGNET WIND TURBINE GENERATORStudent’s NameInstitutionCity, Date

2Abstract This article talks about system of control, modelling and analysing the permanent magnet generator wind turbine based attached to the grind, converting energy wind by use of Buck-Boost converter for permanent magnet synchronous generator in relation to the speed variable, wind energy conversion system has been preferred whereby it is integrated by use of the five-level diode-clamped multilevel converter with the grind. Converters that are highly efficient are important for systems of energy that can be renewed particularly, those connected with grind applications of wind. The adoption of systems of renewing energy for electric power sources generation is getting relevance so as to minimize pollution of the environment and global warming additionally, achieving the power escalating by consumer demand. Generation of power from wind generally, either uses turbines of variable speed or speed which is fixed and themajor converters and generators configurations are applied in the connected grind variable wind power system are[ CITATION And07 \l 1033 ]. The goal is to achieve a system that is highly efficient, simple, maintenance free and robust where the five-level diode-clamped multilevel thatwas proposed had in 3 stages of the system of wind energy being applied of which the outcome was several benefits that were promising. It is important to understand the systems of power, applications and machines of electronic power converters and schemes of control together put ona platform that is common.

3Contents1.Introduction.........................................................................................................................................42.Literature Review................................................................................................................................52.1.Synchronous generators run by a turbine with a fixed speed...........................................................52.2.Modelling Systems of Wind Turbine-Generators............................................................................92.3.Systems of Wind Turbine-Generator Control Strategies................................................................122.4.Topologies of Power Converters in Systems of Wind Turbine Generators....................................143.RESEARCH DESIGN.......................................................................................................................184.Result and Analysis...........................................................................................................................215.Conclusion.........................................................................................................................................25References.................................................................................................................................................27

41. Introduction The power used on a large scale is electricity as an energy source in places of work, homes and industries hence the growth of industries and population have significantly caused the increase inconsumption of power for over 3 years that have past. Resources that are natural such as coal, gas and petroleum which runs plants, vehicles and industries for many years are depleting at a rate that is fast, and this has led to countries all over the world to come up with alternative sources of energy to that conserve the natural resources which are inexhaustible. Stable advancements in technology invented over fifteen years ago have impacted wind plants and moreof this developments has been done in the components in the relation of integration of wind, converters of power, the capability to control and machines that are electrical[ CITATION And15 \l 1033 ]. Long gone are machines that simply inducted with a start that is soft because there is an enhancement of real and power reactivated machines power output limit and speed and voltage control. A lot of research has been conducted worldwide on this aspect and developments on the technology that gives a capability deal that is great thus a variety of reasons for applying wind turbine with variable speed;Much power is generated from the generator with variable speed as compared to other counterparts with speed that is constant systems.Availability of simplified control of pitch with costs that are feasible.The compensator of power that is reactive and omission of starter soft system due to the existence of electronic power devices.

5Minimized pulsation of torque improves the quality of power by power variation elimination and minimizing flickers.Reduced stresses that are mechanical by minimizing and absorbing pulsations in torque variable speed.The reduced noise that is acoustic by working in wind gusts that are at a speed that is lowerDeployment of power point systems of tracking that efficiently improve systems of variable speed.2.Literature Review2.1.Synchronous generators run by a turbine with a fixed speedUsually, a synchronous generator comprises stator carrying a set of windings that are in 3 phases which distributes the load that is external and a rotor that also produces a field source that is magnetic. The rotor is either supplied from current which is flowing directly from the field wound or permanent magnetic[ CITATION Avi17 \l 1033 ].a.Permanent Magnet Synchronous Generator run by wind turbine Several schemes configuration using a magnet that for purposes of generating power using a permanent magnet synchronous generator had been adopted whereby, a permanent magnet synchronous generator was in one of them connected to a rectifier with 3 phases then by converter being boosted, the converter boost controls the torque which is electromagnetic. The side supply converter controls DC voltage link together with the power input factor, one disadvantage of the configuration is that the diode rectifier usage which increases the amplitude

6of current also destroys the permanent magnet synchronous generator. Therefore the configuration has been preferred for a system of wind power that is small in size approximately smaller than 50KW whereas in other schemes that use a permanent magnet synchronous generator the rectifier PWM is in between the link DC and the generator placed and another PWM converter connected to the network[ CITATION Tom11 \l 1033 ].The importance of this system in relation to the usage of field-orientation control, is that the generator is allowed to operate almost to the working point that is optimal so as to lower losses in the electronic power circuit and the generator, however, performance relies on the knowledge that is good on the parameter of the generator which changes with frequency and temperature. The main disadvantage of the permanent magnet synchronous generator is that it’s cost increasesin price which also affects machine and demagnetizing of the material that is permanently magnetic which makes it difficult to control the machine’s factor of power.b.Wound field synchronous generator driven by a wind turbineThe winding stator is connected to the network by a converter of power which is a four-quadrant and consists of two sinusoidal PWM that is back to back while the converter side machine controls the torque electromagnetic and the side grid converter controls the reactive and real power the WPS delivers to the utility. Advantages of the wound field synchronous generator are high efficiency as it wholly involves the stator current for production of torque electromagnetic however the main advantage of adopting wound field synchronous generator with a pole that is salient, it enables direct regulation of the machine power factor thereby also minimizing the current stator at any operational conditions. The presence of a circuit in winding in the rotor is a setback than with a permanent magnet synchronous generator additionally, for reactive and

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