A Comprehensive Analysis and Review on Electrical Machines in Wind Energy Conversion Systems

2020 ◽  
Vol 35 ◽  
pp. 77-93
Author(s):  
Dourodjayé Pierre Aguemon ◽  
Richard Gilles Agbokpanzo ◽  
Frédéric Dubas ◽  
Antoine Vianou ◽  
Didier Chamagne ◽  
...  

Wind energy conversion systems (WECS) have developed rapidly in recent years in terms of capacity and wind turbines design. This development led to improve power quality, to reduce the costs and increase the energy yield. WECS are expected to be reliable, effective and more cost-competitive. A comprehensive analysis and review on electrical machines in WECS (viz., wind turbine generators) has been presented in this paper. Design, (dis) advantages, and market penetration of different wind turbine generators are analyzed and discussed. Some comparisons have been made on the permanent-magnet (PM) synchronous machines, promising generator for future wind turbines, especially offshore wind turbines.

Author(s):  
Dr. R. C. Bansal ◽  
Dr. Ahmed F Zobaa ◽  
Dr. R. K. Saket

Design and successful operation of wind energy conversion systems (WECs) is a very complex task and requires the skills of many interdisciplinary skills, e.g., civil, mechanical, electrical and electronics, geography, aerospace, environmental etc. Performance of WECs depends upon subsystems like wind turbine (aerodynamic), gears (mechanical), generator (electrical); whereas the availability of wind resources are governed by the climatic conditions of the region concerned for which wind survey is extremely important to exploit wind energy. This paper presents a number of issues related to the power generation from WECs e.g. factors affecting wind power, their classification, choice of generators, main design considerations in wind turbine design, problems related with grid connections, wind-diesel autonomous hybrid power systems, reactive power control of wind system, environmental aspects of power generation, economics of wind power generation, and latest trend of wind power generation from off shore sites.


2020 ◽  
Vol 14 ◽  

To keep away from non-renewable fossil energy, clean and green wind energy is one of the sustainable sources in nature that produce the electrical power with no-fossil energy issues. The fastest growing type of renewable energy is the wind energy due to its free availability and environmental problems. Wind energy conversion systems (WECSs) assume a significant part in the new production of electric power from renewable sources. Due to the technical progress in the wind turbine manufacturing, we have many types of wind turbines in use around the world. Many kinds of generators were used in the WECS. In this paper a comparison between three types of generators exploited in WECSs will be introduced. These types are self-excited induction generators (SEIGs), doubly-fed induction generator (DFIGs) and switched reluctance generators (SRGs). The comparison between the generators includes the speed range of operation, fault sensitivity, power ratings and the suitable types of wind turbines used for the three generators, moreover the control techniques applied.


Author(s):  
Alok Pratap ◽  
Abdul Motin Howlader ◽  
Tomonobu Senjyu ◽  
Atsushi Yona ◽  
Naomitsu Urasaki ◽  
...  

Abstract This paper deals with controlling the output power smoothing of a wind energy conversion systems (WECS) by using permanent magnet synchronous generator (PMSG). It uses the inertia control of the wind turbine and DC-link voltage control. The PMSG is connected to the grid through a generator-side converter and a grid-side inverter based on AC-DC-AC methods. The generator-side converter is used to control the torque of the PMSG while the grid-side inverter is used to control DC-Link voltage and grid voltage. Fuzzy logic is implemented to determine the torque command by using inertia of wind turbine. The inputs of the fuzzy logic are given by the operating point of the rotational speed of the PMSG and the difference between the wind turbine torque and the generator torque. From the proposed method, the generator torque is smoothed and kinetic energy generated by the inertia of the wind turbine is used to smooth the power fluctuations of PMSG. Also, a stable operation of WECS is achieved during the system fault by using the chopper circuit in the DC-link circuit. The output power smoothing is achieved with stability and low cost. The effectiveness of the proposed method is verified by the numerical simulations.


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