Electrical machines and power electronic drives for wind turbine applications

Milivojevic, Nikola; Stamenkovic, I.; Schofield, N.; Emadi, Ali

doi:10.1109/iecon.2008.4758320

Cited by 18 publications

(4 citation statements)

References 17 publications

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“…If a photovoltaic system is utilized, the MPPT control loop can stabilize the given voltage, regardless of the radiation factor, by adjusting the electronic chopper duty cycle. This is also true for wind energy systems, where the MPPT approach can improve the output voltage regardless of wind speed by regulating the propeller pitch angle [14]. On the other hand, when a battery pack is put for storing or solving energy, the connection between this energy storage device and all of these energy sources must be carefully evaluated to ensure that the overall system is protected from overload and battery pastime [15].…”

Section: Literat Ure State Of the Artmentioning

confidence: 99%

“…According to the law of Betz, this coefficient can reach a maximum value of 59% in theory but practically it can reach 40% for the most efficient wind turbines [25]. The mechanical angular speed of the turbine is calculated using the relationship between the electrical torque and the mechanical torque, which includes the mass of the generator and the turbine as in Equation (14).…”

Section: Mechanical Subsystemmentioning

confidence: 99%

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Decreasing the Battery Recharge Time if Using a Fuzzy Based Power Management Loop for an Isolated Micro-Grid Farm

et al. 2022

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An isolated micro-grid has different requirements from the traditional power grids. Several energy sources may be linked for the purpose of sharing load demand without being linked to the grid. The isolated micro-grid is made up of at least one energy generator, an energy storage system, and a load portion. Because there are several energy sources and a range of models, the power flow must be managed to ensure the safety of all hardware. Monitoring the flow of power from multiple energy sources necessitates adherence to many parameters and other requirements. As a result, the goal of this work is to identify a worthwhile solution for providing the appropriate portions with the necessary power while also obtaining the necessary energy from other sources. The approach is based on the fuzzy logic controller, which is an intelligent technology. This regulator is used in an efficient process that tries to control all of the equipment in the isolated micro-grid under investigation. The MATLAB/Simulink platform is employed for simulating this proposed system, and then, the depicted results were discussed and compared. Showing the traditional relay control, the standard PI regulator, and a neural control combination process, the achieved results prove that it is possible to reduce the battery recharge time to half; if the proposed fuzzy controller is used. Then, the established controller specifications have been used for evaluating the energy performances of the hybrid energy system under a real case situation in a specific location in the world. Consequently, the obtained results prove that this proposal power management system will be largely beneficial for such energy storage applications and an energy yield can be assured during all climatic conditions and specifications.

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Section: Literat Ure State Of the Artmentioning

confidence: 99%

Section: Mechanical Subsystemmentioning

confidence: 99%

Decreasing the Battery Recharge Time if Using a Fuzzy Based Power Management Loop for an Isolated Micro-Grid Farm

et al. 2022

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“…In addition, implementation brings certain complexity. On the other hand, brushless direct current (BLDC) control offers good results with much simpler feedback demands [27]. Fig.…”

Section: Proposed Linear Electric Drivementioning

confidence: 99%

Three phase linear permanent magnet energy scavenger based on foot horizontal motion

Stamenkovic

Milivojevic

Zheng

et al. 2010

2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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Energy scavenging from human body motion is gaining more attention. Most of research in energy harvesting from foot motion has focused on heel strike and foot vertical motion. This paper presents a linear electric machine topology and power electronic converter for energy harvesting from horizontal foot movement. Micro level aspect of the whole system makes generator topology unconventional. Therefore, design methodology comprises numerical and analytical modelling. Numerical analysis is based on comprehensive three dimensional finite element analysis (FEA), which provides possibilities for inclusive optimizations presented in this paper. Final results demonstrate that the proposed generator topology is a promising candidate for energy scavenging applications from human foot motion.Index terms -Renewable energy, energy scavenging, linear electrical machines, machine design, 3D finite element analysis.

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“…The majority of commercial small wind systems are directdrives, designs without a gearbox, providing a more efficient and cost effective solution [21].…”

Section: Analysis Of the Electrical Generator Of A Small Wind Turmentioning

confidence: 99%

Power and energy analysis of commercial small wind turbine systems

Milivojevic¹,

Stamenkovic²,

Schofield³

2010

2010 IEEE International Conference on Industrial Technology

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Small wind turbines harvest wind energy to provide carbon free energy for residential and small commercial applications. Current technology consists of a diode-bridge rectifier and an off-the-shelf generator. Such a simplified system does not utilize the full capacity of the turbine because the generator drive system is not designed specifically for wind turbine applications. This paper presents the technology that is commonly used in small wind turbines today. The relationship of the wind turbine's mechanical characteristics and the generator power characteristics are explained and some basic design considerations for small wind systems are discussed. The tests utilize a permanent magnet (PM) generator which is connected to the grid via an industrial inverter, and run for different speeds to examine the output power characteristics. Standard operation as well as the control of such a system is covered in detail.

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Electrical machines and power electronic drives for wind turbine applications

Cited by 18 publications

References 17 publications

Decreasing the Battery Recharge Time if Using a Fuzzy Based Power Management Loop for an Isolated Micro-Grid Farm

Decreasing the Battery Recharge Time if Using a Fuzzy Based Power Management Loop for an Isolated Micro-Grid Farm

Three phase linear permanent magnet energy scavenger based on foot horizontal motion

Power and energy analysis of commercial small wind turbine systems

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