Abstract
Soft magnetic composite (SMC) is composed of ferromagnetic particles surrounded by an electrical insulation layer. The unique structure of SMC makes it difficult to calculate the eddy current loss of SMC. In addition, the temperature rise in the working condition affects the magnetic properties of the material, which makes it necessary to consider the temperature effect in the process of core loss prediction. In this paper, a magnetic property test platform that considers the influence of temperature is established. The core losses of the SMC ring sample were measured at 20–100 °C, and the experimental results show that core loss decreases as the temperature increases. Then, based on the method of using the SMC model to calculate the core loss, the effect of temperature increase on hysteresis loss and eddy current loss was analyzed, and the existing model was improved to consider the effect of temperature on the core loss. Finally, the measured core losses at different temperatures were compared with the calculated ones, and it is shown that the improved model considering the influence of temperature agreed well with the experimental results, which improves the accuracy and convenience of core loss calculation for the electromagnetic device with SMC cores.
Highlights
Soft magnetic composite (SMC) is a relatively new soft magnetic material, which is composed of ferromagnetic particles surrounded by an electrical insulation layer [1]
To calculate the core loss considering temperature effect quickly and accurately in the determined electromagnetic device, this paper proposes a method to improve the existing model so that it can calculate the SMC core loss under different temperature effects
Relative mean error of the improved model is below 8% from 20 to 100 °C
Summary
Soft magnetic composite (SMC) is a relatively new soft magnetic material, which is composed of ferromagnetic particles surrounded by an electrical insulation layer [1]. The low-frequency iron loss experimental data is needed to calculate the iron loss at different magnetic densities and frequencies This method greatly reduces the calculation cost and can be used in calculation of core loss for actual electromagnetic devices. To calculate the core loss considering temperature effect quickly and accurately in the determined electromagnetic device, this paper proposes a method to improve the existing model so that it can calculate the SMC core loss under different temperature effects. Based on the method of using the SMC model to calculate the core loss, the effect of temperature increase on hysteresis loss and eddy current loss is analyzed, and the existing model is improved to consider the effect of temperature on the core loss. The measured core losses at different temperatures are compared with the calculated ones to verify the proposed model
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
