Abstract
In this study, a current source analysis method considering the inverter switching frequency is proposed to improve the precision of loss analysis of a traction motor for a hybrid electric vehicle. Because the iron loss of the traction motor is sensitively influenced by input current fluctuations, the current source analysis using the actual current obtained from an inverter is the ideal method for accurate analysis. However, as the traction motor and inverter should be manufactured to obtain the real current, the traction motor is generally designed based on an ideal current source analysis. Our proposed method is an analytic technique that fits the loss of a traction motor similar to the actual loss by injecting harmonics of the same order of the inverter switching frequency into the ideal input current. Our method is compared with the analysis of the ideal current source to assess the difference in loss. In addition, a test motor was manufactured, and an efficiency test was conducted to compare the efficiency and verify the effectiveness of our method.
Highlights
Because the iron loss of the traction motor is sensitively influenced by input current fluctuations, the current source analysis using the actual current obtained from an inverter is the ideal method for accurate analysis
In this study we have proposed a numerical method for improving the accuracy of the iron loss analysis
Because the analysis of the ideal current source used in the analysis of the motor does not reflect the harmonics of the inverter switching frequency, the accuracy of analysis of iron loss affected by harmonics is low
Summary
Characteristic comparison comparison of of the the conventional conventional methods methods with with the the proposed proposed method. In this thisstudy, study,we wepropose proposea atechnique technique improve accuracy of losses obtained the andand thusthus minimize the the difference between the the analysis andand experimental revia analysis the analysis minimize difference between analysis experimental results when analyzing the tractionmotor motorusing usingFEA, FEA,based basedon onthe thecurrent currentsource sourceanalysis. To verify the effectiveness of the proposed method, the analysis results experimental models. To verify the effectiveness of the proposed method, the analysis of the ideal source source and theand proposed methodmethod were compared to the experimental results of thecurrent ideal current the proposed were compared to the experresults of the manufactured model. To verify the effectiveness of the proposed method, the analysis of the ideal source source and theand proposed methodmethod were compared to the experimental results of thecurrent ideal current the proposed were compared to the experresults of the manufactured model. model
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
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 call
