The investigation explores the mechanical stress and electromagnetic performance for a wind-driven synchronous reluctance generator(SRG).The change in the mechanical stress due to the presence of centripetal force,win...The investigation explores the mechanical stress and electromagnetic performance for a wind-driven synchronous reluctance generator(SRG).The change in the mechanical stress due to the presence of centripetal force,wind speed,and rotor speed are evaluated for different thickness of tangential and radial ribs.Moreover,the variation in the electromagnetic feature such as the q−and d−axes flux,reactance ratio,inductance,torque and torque ripple are discussed for different thickness of tangential and radial ribs.Increasing both tangential and radial ribs thickness has an effect on the electromagnetic performance,but it is observed that effect is significantly more with the variation of tangential rib thickness.Similarly,the mechanical stress analysis for rotor design has been explored in this paper.It is observed that high concentration of peak stress on the rotor ribs,which limits the range of rotor speed.展开更多
The present paper analyses the effect of placing the ferrite magnet into the rotor air barrier of synchronous reluctance generators(SRG)on its electromagnetic performance.The paper uses a difference of average electro...The present paper analyses the effect of placing the ferrite magnet into the rotor air barrier of synchronous reluctance generators(SRG)on its electromagnetic performance.The paper uses a difference of average electromagnetic torque and ripple torque as a measure of the performance index.Here,in the analysis,a magnetic material is placed in the middle of each air barrier,and its size is symmetrically increased on both sides to increase the percentage of the volume of the magnetic material.The effect of an increase in the volume of the magnetic material on its performance is presented.Moreover,the variation in electromagnetic features such as the d−and q-axes inductance and flux linkage are also explored and compared for different volumes and ferrite material.In the present work,finite element analysis is used to get the electromagnetic performance.The paper also includes hardware validation on the fabricated prototype of SRG(without ferrite magnet),but SRG with a ferrite magnet only includes the results with FEA simulation.展开更多
基金This work was sponsored by a Defense University from the National Defense of Ethiopia.
文摘The investigation explores the mechanical stress and electromagnetic performance for a wind-driven synchronous reluctance generator(SRG).The change in the mechanical stress due to the presence of centripetal force,wind speed,and rotor speed are evaluated for different thickness of tangential and radial ribs.Moreover,the variation in the electromagnetic feature such as the q−and d−axes flux,reactance ratio,inductance,torque and torque ripple are discussed for different thickness of tangential and radial ribs.Increasing both tangential and radial ribs thickness has an effect on the electromagnetic performance,but it is observed that effect is significantly more with the variation of tangential rib thickness.Similarly,the mechanical stress analysis for rotor design has been explored in this paper.It is observed that high concentration of peak stress on the rotor ribs,which limits the range of rotor speed.
文摘The present paper analyses the effect of placing the ferrite magnet into the rotor air barrier of synchronous reluctance generators(SRG)on its electromagnetic performance.The paper uses a difference of average electromagnetic torque and ripple torque as a measure of the performance index.Here,in the analysis,a magnetic material is placed in the middle of each air barrier,and its size is symmetrically increased on both sides to increase the percentage of the volume of the magnetic material.The effect of an increase in the volume of the magnetic material on its performance is presented.Moreover,the variation in electromagnetic features such as the d−and q-axes inductance and flux linkage are also explored and compared for different volumes and ferrite material.In the present work,finite element analysis is used to get the electromagnetic performance.The paper also includes hardware validation on the fabricated prototype of SRG(without ferrite magnet),but SRG with a ferrite magnet only includes the results with FEA simulation.
