Study of soft magnetic composite core loss under different working conditions
Based on the ring-shaped specimen method,a magnetic property test platform was employed to optimize the design of electrical equipment and to accurately and efficiently solve the loss of core materials under different working conditions.The magnetic properties of soft magnetic composites(SMC)were measured and analyzed under different operational conditions.A three-dimensional model was established,and correction coefficient was introduced to accurately simulate the losses of the magnetic SMC core in real-world conditions.The calculated results from the 3D model were compared with experimental findings,and error analysis was performed using the relative mean error.The results indicate that mixed AC and DC conditions have minor effect on the loss of the magnetic SMC core.The performance is more stable in comparison with silicon-steel sheets.Under harmonic conditions,the loss of the magnetic cores increases with the harmonic content and order,and the effect harmonic phase is trivial.At different temperatures,the loss of the magnetic core decreases at higher temperature.The results of the model coincide with the measurement results,and the error is significantly reduced compared with the existing model.The overall error is below 6％,which satisfy the required accuracy standards.
soft magnetic compositescomplex working conditionscorrection factorfinite element simulationcore loss
万方数据
维普
