외전형 모터 무부하 역기전력의 THD 저감을 위한 자성유체 활용 연구

국문 초록 (Abstract)

모터를 설계함에 있어서 전자기 성능과 소음·진동은 서로 대립되는 요소로서 고출력·저소음 모터를 설계 하는 것은 쉽지 않다. 본 논문은 자성을 띠는 초미립 분말이 섞인 액체인 자성유체를 외전형 모터에 적용하여 모 터의 전자기 성능과 소음·진동을 동시에 개선시킨다. 다양한 종류의 자성유체에 대해 자기적인 분석을 실시하였으 며 모터에 적용하기 적합한 자성유체를 선정하였다. 외부 인자를 최소화하기 위하여 추가적인 구조물이 필요치 않 은 외전형 모터를 선정하였다. 유한요소법을 통하여 자성유체가 적용 가능한 구조에 따른 모터의 성능 변화를 분 석하였다. 외전형 모터의 회전자에 실제로 자성유체를 도포하였으며 모터의 성능을 개선시키는 형태로 도포되는 것을 확인하였다. 다이나모 시험을 통하여 자성유체의 주입 여부에 따라 무부하 선간전압을 측정하였으며 전자기 성능의 향상을 확인하였다.

다국어 초록 (Multilingual Abstract)

In this paper, ferrofluid, which is a liquid mixed with magnetic ultrafine powder, is applied to an external motor to improve the electromagnetic performance and noise at the same time. Magnetic analysis was performed on various types of ferrofluids, and ferrofluids suitable for motor application were selected. To minimize external factors, an external motor that does not require an additional structure was selected. Through the finite element method, the performance change of the motor according to the structure to which ferrofluid is applicable was analyzed. The ferrofluid was applied to the rotor of the external motor, and it was confirmed that the ferrofluid was applied in the form of improving the performance of the motor. Through the dynamo test, the improvement of electromagnetic performance was confirmed by measuring the no-load line voltage depending on whether the ferrofluid was injected.

목차 (Table of Contents)

• 요약
• Abstract
• Ⅰ. 서론
• Ⅱ. 자성유체 및 기본 모델 선정
• 2.1 자성유체 종류에 따른 특성 분석
• 2.2 자성유체 적용 기본 모델
• Ⅲ. 자성유체 도포 형상에 따른 성능
• 3.1 무부하 역기전력 비교
• 3.2 코깅토크 비교
• Ⅳ. 시험 및 검증
• 4.1 시험 장비 및 세팅과정
• Ⅴ. 결론
• REFERENCES

참고문헌 (Reference)

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