Surveying the distribution of magnetic force in the new switched reluctance motor
Abstract
The magnetic force distribution significantly affects electric devices' working characteristics, especially in switched reluctance motors. This distributed magnetic force determines the torque and efficiency of the motor. The examination of the magnetic distribution as well as the magnetic force is a necessary scientific matter. Therefore, two magnetic models, including the Ampere model and the virtual work principle are used to analyze and calculate the distributed magnetic force in the switched reluctance motor presented in this paper. Furthermore, switched reluctance motor which has new structure is also proposed to evaluate and compare the magnetic force distribution with the prototype switching reluctance motor structure. The survey results show that the magnetic force distributed in the two models is equivalent. The magnetic force distribution on the new switched reluctance motor structure is improved compared to the prototype motor structure.
Tóm tắt
Sự phân bố lực từ ảnh hưởng không nhỏ tới đặc tính làm việc của các thiết bị điện từ, nhất là trong động cơ từ trở chuyển mạch. Lực từ phân bố này quyết định đến mô men và hiệu suất của động cơ. Việc kiểm tra sự phân bố từ cũng như lực từ là vấn đề khoa học cần thiết. Do đó, hai mô hình từ gồm mô hình Ampere và mô hình dựa trên nguyên lý công ảo được dùng để phân tích, tính toán lực từ phân bố trong động cơ từ trở chuyển mạch được trình bày trong bài báo này. Hơn nữa, động cơ từ trở chuyển mạch có cấu trúc mới cũng được đưa ra để đánh giá, so sánh sự phân bố lực từ với cấu trúc động cơ từ trở chuyển mạch nguyên mẫu. Kết quả khảo sát cho thấy lực từ được phân bố theo hai mô hình là tương đương nhau và lực từ phân bố trên cấu trúc động cơ từ trở chuyển mạch mới được cải thiện hơn so với cấu trúc động cơ nguyên mẫu.
Article Details
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