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The research of the steady-state characteristic of doubly fed induction generator (DFIG) can help us understand the working process of the generator.And in accordance with the features we can control the generator to improve the efficiency.On the basis of motor theory, the DFIG's mathematical model is established, and the relationship between the DFIG's stator active, reactive power and rotor's voltage...
Renewable energy harvesting is of prime interest in lieu of increasing demand for energy and high price of fossil fuels. Albeit the diminishing resources of petroleum and natural gas has given a renewed attention to the topic. Wind energy is by far the most accessible and efficient form of renewable energy forms given the state of technology in other renewable resources i.e., solar, fuel cells, etc...
This paper presents a novel strategy to calculate the eddy current, loss and temperature fields of the end region of a 1000 MW turbine-generator. Discretization is needed only in the radial/axial plane. The magnetic-thermal coupled field under different operating modes is calculated by an integrated computing system, which is developed by using commercial software ANSYS being nested in Visual-Fortran...
Parametric motors offer numerous attractive features not found in ordinary motors, such as overload protection, simple construction, low cost, and low noise. This paper discusses the mechanism of iron losses occurring in the cores of a parametric motor, with a view to further improving the motor's characteristics and putting it to practical use. It is shown that the greater part of the iron loss in...
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