Title :
Losses calculation in transformer tie plate using the finite element method
Author :
Lin, Li ; Xiang, Cui ; Yuanlu, Zhang ; Zhiguang, Cheng ; Guoqiang, Zhang ; Yinhan, Zhao
Author_Institution :
North China Electr. Power Univ., Hebei, China
fDate :
9/1/1998 12:00:00 AM
Abstract :
The 3D leakage magnetic field in a transformer is calculated by using the surface impedance method based on two scalar magnetic potentials. The leakage magnetic flux density and the highest temperature rise of the tie plate calculated are compared with the measured values, and the results are satisfied for engineering design. The nonlinear eddy current field inside the tie plate is calculated by using H as the state variable directly. The eddy current and hysteresis losses of the tie plate are calculated respectively. The influences are analyzed of the width and the slot number of the tie plate and the transformer load current
Keywords :
eddy current losses; finite element analysis; magnetic fields; magnetic flux; magnetic hysteresis; magnetic leakage; power transformers; 3D leakage magnetic field; eddy current loss; engineering design; finite element method; hysteresis loss; leakage magnetic flux density; magnetic losses calculation; nonlinear eddy current field; power transformer tie plate; scalar magnetic potentials; slot number; surface impedance method; temperature rise; tie plate width; transformer load current; Coils; Eddy currents; Finite element methods; Impedance measurement; Magnetic fields; Magnetic flux; Power transformer insulation; Power transformers; Surface treatment; Transformer cores;
Journal_Title :
Magnetics, IEEE Transactions on
